[GIT pull] perf updates for 4.16

From: Thomas Gleixner
Date: Sun Feb 18 2018 - 12:37:15 EST

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Linus,

please pull the latest perf-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-for-linus

Perf and kprobes updates:

- perf_mmap overwrite mode fixes/overhaul, prep work to get 'perf top'
using it, making it bearable to use it in large core count systems such
as Knights Landing/Mill Intel systems (Kan Liang)

- s/390 now uses syscall.tbl, just like x86-64 to generate the syscall
table id -> string tables used by 'perf trace' (Hendrik Brueckner)

- Use strtoull() instead of home grown function (Andy Shevchenko)

- Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar)

- Document missing 'perf data --force' option (Sangwon Hong)

- Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William Cohen)

- Improve error handling and error propagation of ftrace based kprobes so
failures when installing kprobes are not silently ignored and create
disfunctional tracepoints.

Thanks,

tglx

------------------>
Andy Shevchenko (1):
perf tools: Substitute yet another strtoull()

Arnaldo Carvalho de Melo (1):
perf evsel: Expose the perf_missing_features struct

Hendrik Brueckner (3):
perf s390: Grab a copy of arch/s390/kernel/syscall/syscall.tbl
perf s390: Rework system call table creation by using syscall.tbl
Revert "tools include s390: Grab a copy of arch/s390/include/uapi/asm/unistd.h"

Ingo Molnar (1):
tools/headers: Synchronize kernel ABI headers, v4.16-rc1

Jessica Yu (2):
kprobes: Propagate error from arm_kprobe_ftrace()
kprobes: Propagate error from disarm_kprobe_ftrace()

Kan Liang (16):
perf evlist: Remove stale mmap read for backward
perf mmap: Recalculate size for overwrite mode
perf mmap: Cleanup perf_mmap__push()
perf mmap: Introduce perf_mmap__read_init()
perf mmap: Add new return value logic for perf_mmap__read_init()
perf mmap: Discard 'prev' in perf_mmap__read()
perf mmap: Introduce perf_mmap__read_done()
perf mmap: Introduce perf_mmap__read_event()
perf test: Update mmap read functions for backward-ring-buffer test
perf mmap: Discard legacy interface for mmap read
perf top: Check per-event overwrite term
perf top: Add overwrite fall back
perf hists browser: Add parameter to disable lost event warning
perf top: Remove lost events checking
perf top: Switch default mode to overwrite mode
perf top: Check the latency of perf_top__mmap_read()

Sangwon Hong (1):
perf data: Document missing --force option

Thomas Richter (1):
perf test: Fix test trace+probe_libc_inet_pton.sh for s390x

William Cohen (1):
perf vendor events aarch64: Add JSON metrics for ARM Cortex-A53 Processor

kernel/kprobes.c | 178 ++++++---
tools/arch/powerpc/include/uapi/asm/kvm.h | 2 +
tools/arch/s390/include/uapi/asm/unistd.h | 412 ---------------------
tools/arch/x86/include/asm/cpufeatures.h | 1 +
tools/include/uapi/drm/i915_drm.h | 77 ++++
tools/include/uapi/linux/if_link.h | 1 +
tools/include/uapi/linux/kvm.h | 90 +++++
tools/perf/Documentation/perf-data.txt | 4 +
tools/perf/arch/s390/Makefile | 10 +-
tools/perf/arch/s390/entry/syscalls/mksyscalltbl | 18 +-
tools/perf/arch/s390/entry/syscalls/syscall.tbl | 390 +++++++++++++++++++
tools/perf/builtin-c2c.c | 4 +-
tools/perf/builtin-report.c | 3 +-
tools/perf/builtin-top.c | 150 +++++++-
tools/perf/check-headers.sh | 1 -
.../pmu-events/arch/arm64/cortex-a53/branch.json | 27 ++
.../perf/pmu-events/arch/arm64/cortex-a53/bus.json | 22 ++
.../pmu-events/arch/arm64/cortex-a53/cache.json | 27 ++
.../pmu-events/arch/arm64/cortex-a53/memory.json | 22 ++
.../pmu-events/arch/arm64/cortex-a53/other.json | 32 ++
.../pmu-events/arch/arm64/cortex-a53/pipeline.json | 52 +++
tools/perf/pmu-events/arch/arm64/mapfile.csv | 1 +
tools/perf/tests/backward-ring-buffer.c | 7 +-
.../perf/tests/shell/trace+probe_libc_inet_pton.sh | 23 +-
tools/perf/ui/browsers/hists.c | 38 +-
tools/perf/ui/browsers/hists.h | 3 +-
tools/perf/util/evlist.c | 17 -
tools/perf/util/evlist.h | 4 -
tools/perf/util/evsel.c | 12 +-
tools/perf/util/evsel.h | 14 +
tools/perf/util/hist.h | 6 +-
tools/perf/util/mmap.c | 141 ++++---
tools/perf/util/mmap.h | 10 +-
tools/perf/util/util.c | 24 +-
34 files changed, 1195 insertions(+), 628 deletions(-)
delete mode 100644 tools/arch/s390/include/uapi/asm/unistd.h
create mode 100644 tools/perf/arch/s390/entry/syscalls/syscall.tbl
create mode 100644 tools/perf/pmu-events/arch/arm64/cortex-a53/branch.json
create mode 100644 tools/perf/pmu-events/arch/arm64/cortex-a53/bus.json
create mode 100644 tools/perf/pmu-events/arch/arm64/cortex-a53/cache.json
create mode 100644 tools/perf/pmu-events/arch/arm64/cortex-a53/memory.json
create mode 100644 tools/perf/pmu-events/arch/arm64/cortex-a53/other.json
create mode 100644 tools/perf/pmu-events/arch/arm64/cortex-a53/pipeline.json

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index da2ccf142358..102160ff5c66 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -978,67 +978,90 @@ static int prepare_kprobe(struct kprobe *p)
}

/* Caller must lock kprobe_mutex */
-static void arm_kprobe_ftrace(struct kprobe *p)
+static int arm_kprobe_ftrace(struct kprobe *p)
{
- int ret;
+ int ret = 0;

ret = ftrace_set_filter_ip(&kprobe_ftrace_ops,
(unsigned long)p->addr, 0, 0);
- WARN(ret < 0, "Failed to arm kprobe-ftrace at %p (%d)\n", p->addr, ret);
- kprobe_ftrace_enabled++;
- if (kprobe_ftrace_enabled == 1) {
+ if (ret) {
+ pr_debug("Failed to arm kprobe-ftrace at %p (%d)\n", p->addr, ret);
+ return ret;
+ }
+
+ if (kprobe_ftrace_enabled == 0) {
ret = register_ftrace_function(&kprobe_ftrace_ops);
- WARN(ret < 0, "Failed to init kprobe-ftrace (%d)\n", ret);
+ if (ret) {
+ pr_debug("Failed to init kprobe-ftrace (%d)\n", ret);
+ goto err_ftrace;
+ }
}
+
+ kprobe_ftrace_enabled++;
+ return ret;
+
+err_ftrace:
+ /*
+ * Note: Since kprobe_ftrace_ops has IPMODIFY set, and ftrace requires a
+ * non-empty filter_hash for IPMODIFY ops, we're safe from an accidental
+ * empty filter_hash which would undesirably trace all functions.
+ */
+ ftrace_set_filter_ip(&kprobe_ftrace_ops, (unsigned long)p->addr, 1, 0);
+ return ret;
}

/* Caller must lock kprobe_mutex */
-static void disarm_kprobe_ftrace(struct kprobe *p)
+static int disarm_kprobe_ftrace(struct kprobe *p)
{
- int ret;
+ int ret = 0;

- kprobe_ftrace_enabled--;
- if (kprobe_ftrace_enabled == 0) {
+ if (kprobe_ftrace_enabled == 1) {
ret = unregister_ftrace_function(&kprobe_ftrace_ops);
- WARN(ret < 0, "Failed to init kprobe-ftrace (%d)\n", ret);
+ if (WARN(ret < 0, "Failed to unregister kprobe-ftrace (%d)\n", ret))
+ return ret;
}
+
+ kprobe_ftrace_enabled--;
+
ret = ftrace_set_filter_ip(&kprobe_ftrace_ops,
(unsigned long)p->addr, 1, 0);
WARN(ret < 0, "Failed to disarm kprobe-ftrace at %p (%d)\n", p->addr, ret);
+ return ret;
}
#else /* !CONFIG_KPROBES_ON_FTRACE */
#define prepare_kprobe(p) arch_prepare_kprobe(p)
-#define arm_kprobe_ftrace(p) do {} while (0)
-#define disarm_kprobe_ftrace(p) do {} while (0)
+#define arm_kprobe_ftrace(p) (-ENODEV)
+#define disarm_kprobe_ftrace(p) (-ENODEV)
#endif

/* Arm a kprobe with text_mutex */
-static void arm_kprobe(struct kprobe *kp)
+static int arm_kprobe(struct kprobe *kp)
{
- if (unlikely(kprobe_ftrace(kp))) {
- arm_kprobe_ftrace(kp);
- return;
- }
+ if (unlikely(kprobe_ftrace(kp)))
+ return arm_kprobe_ftrace(kp);
+
cpus_read_lock();
mutex_lock(&text_mutex);
__arm_kprobe(kp);
mutex_unlock(&text_mutex);
cpus_read_unlock();
+
+ return 0;
}

/* Disarm a kprobe with text_mutex */
-static void disarm_kprobe(struct kprobe *kp, bool reopt)
+static int disarm_kprobe(struct kprobe *kp, bool reopt)
{
- if (unlikely(kprobe_ftrace(kp))) {
- disarm_kprobe_ftrace(kp);
- return;
- }
+ if (unlikely(kprobe_ftrace(kp)))
+ return disarm_kprobe_ftrace(kp);

cpus_read_lock();
mutex_lock(&text_mutex);
__disarm_kprobe(kp, reopt);
mutex_unlock(&text_mutex);
cpus_read_unlock();
+
+ return 0;
}

/*
@@ -1362,9 +1385,15 @@ static int register_aggr_kprobe(struct kprobe *orig_p, struct kprobe *p)

if (ret == 0 && kprobe_disabled(ap) && !kprobe_disabled(p)) {
ap->flags &= ~KPROBE_FLAG_DISABLED;
- if (!kprobes_all_disarmed)
+ if (!kprobes_all_disarmed) {
/* Arm the breakpoint again. */
- arm_kprobe(ap);
+ ret = arm_kprobe(ap);
+ if (ret) {
+ ap->flags |= KPROBE_FLAG_DISABLED;
+ list_del_rcu(&p->list);
+ synchronize_sched();
+ }
+ }
}
return ret;
}
@@ -1573,8 +1602,14 @@ int register_kprobe(struct kprobe *p)
hlist_add_head_rcu(&p->hlist,
&kprobe_table[hash_ptr(p->addr, KPROBE_HASH_BITS)]);

- if (!kprobes_all_disarmed && !kprobe_disabled(p))
- arm_kprobe(p);
+ if (!kprobes_all_disarmed && !kprobe_disabled(p)) {
+ ret = arm_kprobe(p);
+ if (ret) {
+ hlist_del_rcu(&p->hlist);
+ synchronize_sched();
+ goto out;
+ }
+ }

/* Try to optimize kprobe */
try_to_optimize_kprobe(p);
@@ -1608,11 +1643,12 @@ static int aggr_kprobe_disabled(struct kprobe *ap)
static struct kprobe *__disable_kprobe(struct kprobe *p)
{
struct kprobe *orig_p;
+ int ret;

/* Get an original kprobe for return */
orig_p = __get_valid_kprobe(p);
if (unlikely(orig_p == NULL))
- return NULL;
+ return ERR_PTR(-EINVAL);

if (!kprobe_disabled(p)) {
/* Disable probe if it is a child probe */
@@ -1626,8 +1662,13 @@ static struct kprobe *__disable_kprobe(struct kprobe *p)
* should have already been disarmed, so
* skip unneed disarming process.
*/
- if (!kprobes_all_disarmed)
- disarm_kprobe(orig_p, true);
+ if (!kprobes_all_disarmed) {
+ ret = disarm_kprobe(orig_p, true);
+ if (ret) {
+ p->flags &= ~KPROBE_FLAG_DISABLED;
+ return ERR_PTR(ret);
+ }
+ }
orig_p->flags |= KPROBE_FLAG_DISABLED;
}
}
@@ -1644,8 +1685,8 @@ static int __unregister_kprobe_top(struct kprobe *p)

/* Disable kprobe. This will disarm it if needed. */
ap = __disable_kprobe(p);
- if (ap == NULL)
- return -EINVAL;
+ if (IS_ERR(ap))
+ return PTR_ERR(ap);

if (ap == p)
/*
@@ -2078,12 +2119,14 @@ static void kill_kprobe(struct kprobe *p)
int disable_kprobe(struct kprobe *kp)
{
int ret = 0;
+ struct kprobe *p;

mutex_lock(&kprobe_mutex);

/* Disable this kprobe */
- if (__disable_kprobe(kp) == NULL)
- ret = -EINVAL;
+ p = __disable_kprobe(kp);
+ if (IS_ERR(p))
+ ret = PTR_ERR(p);

mutex_unlock(&kprobe_mutex);
return ret;
@@ -2116,7 +2159,9 @@ int enable_kprobe(struct kprobe *kp)

if (!kprobes_all_disarmed && kprobe_disabled(p)) {
p->flags &= ~KPROBE_FLAG_DISABLED;
- arm_kprobe(p);
+ ret = arm_kprobe(p);
+ if (ret)
+ p->flags |= KPROBE_FLAG_DISABLED;
}
out:
mutex_unlock(&kprobe_mutex);
@@ -2407,11 +2452,12 @@ static const struct file_operations debugfs_kprobe_blacklist_ops = {
.release = seq_release,
};

-static void arm_all_kprobes(void)
+static int arm_all_kprobes(void)
{
struct hlist_head *head;
struct kprobe *p;
- unsigned int i;
+ unsigned int i, total = 0, errors = 0;
+ int err, ret = 0;

mutex_lock(&kprobe_mutex);

@@ -2428,46 +2474,74 @@ static void arm_all_kprobes(void)
/* Arming kprobes doesn't optimize kprobe itself */
for (i = 0; i < KPROBE_TABLE_SIZE; i++) {
head = &kprobe_table[i];
- hlist_for_each_entry_rcu(p, head, hlist)
- if (!kprobe_disabled(p))
- arm_kprobe(p);
+ /* Arm all kprobes on a best-effort basis */
+ hlist_for_each_entry_rcu(p, head, hlist) {
+ if (!kprobe_disabled(p)) {
+ err = arm_kprobe(p);
+ if (err) {
+ errors++;
+ ret = err;
+ }
+ total++;
+ }
+ }
}

- printk(KERN_INFO "Kprobes globally enabled\n");
+ if (errors)
+ pr_warn("Kprobes globally enabled, but failed to arm %d out of %d probes\n",
+ errors, total);
+ else
+ pr_info("Kprobes globally enabled\n");

already_enabled:
mutex_unlock(&kprobe_mutex);
- return;
+ return ret;
}

-static void disarm_all_kprobes(void)
+static int disarm_all_kprobes(void)
{
struct hlist_head *head;
struct kprobe *p;
- unsigned int i;
+ unsigned int i, total = 0, errors = 0;
+ int err, ret = 0;

mutex_lock(&kprobe_mutex);

/* If kprobes are already disarmed, just return */
if (kprobes_all_disarmed) {
mutex_unlock(&kprobe_mutex);
- return;
+ return 0;
}

kprobes_all_disarmed = true;
- printk(KERN_INFO "Kprobes globally disabled\n");

for (i = 0; i < KPROBE_TABLE_SIZE; i++) {
head = &kprobe_table[i];
+ /* Disarm all kprobes on a best-effort basis */
hlist_for_each_entry_rcu(p, head, hlist) {
- if (!arch_trampoline_kprobe(p) && !kprobe_disabled(p))
- disarm_kprobe(p, false);
+ if (!arch_trampoline_kprobe(p) && !kprobe_disabled(p)) {
+ err = disarm_kprobe(p, false);
+ if (err) {
+ errors++;
+ ret = err;
+ }
+ total++;
+ }
}
}
+
+ if (errors)
+ pr_warn("Kprobes globally disabled, but failed to disarm %d out of %d probes\n",
+ errors, total);
+ else
+ pr_info("Kprobes globally disabled\n");
+
mutex_unlock(&kprobe_mutex);

/* Wait for disarming all kprobes by optimizer */
wait_for_kprobe_optimizer();
+
+ return ret;
}

/*
@@ -2494,6 +2568,7 @@ static ssize_t write_enabled_file_bool(struct file *file,
{
char buf[32];
size_t buf_size;
+ int ret = 0;

buf_size = min(count, (sizeof(buf)-1));
if (copy_from_user(buf, user_buf, buf_size))
@@ -2504,17 +2579,20 @@ static ssize_t write_enabled_file_bool(struct file *file,
case 'y':
case 'Y':
case '1':
- arm_all_kprobes();
+ ret = arm_all_kprobes();
break;
case 'n':
case 'N':
case '0':
- disarm_all_kprobes();
+ ret = disarm_all_kprobes();
break;
default:
return -EINVAL;
}

+ if (ret)
+ return ret;
+
return count;
}

diff --git a/tools/arch/powerpc/include/uapi/asm/kvm.h b/tools/arch/powerpc/include/uapi/asm/kvm.h
index 637b7263cb86..833ed9a16adf 100644
--- a/tools/arch/powerpc/include/uapi/asm/kvm.h
+++ b/tools/arch/powerpc/include/uapi/asm/kvm.h
@@ -632,6 +632,8 @@ struct kvm_ppc_cpu_char {
#define KVM_REG_PPC_TIDR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xbc)
#define KVM_REG_PPC_PSSCR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xbd)

+#define KVM_REG_PPC_DEC_EXPIRY (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xbe)
+
/* Transactional Memory checkpointed state:
* This is all GPRs, all VSX regs and a subset of SPRs
*/
diff --git a/tools/arch/s390/include/uapi/asm/unistd.h b/tools/arch/s390/include/uapi/asm/unistd.h
deleted file mode 100644
index 725120939051..000000000000
--- a/tools/arch/s390/include/uapi/asm/unistd.h
+++ /dev/null
@@ -1,412 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * S390 version
- *
- * Derived from "include/asm-i386/unistd.h"
- */
-
-#ifndef _UAPI_ASM_S390_UNISTD_H_
-#define _UAPI_ASM_S390_UNISTD_H_
-
-/*
- * This file contains the system call numbers.
- */
-
-#define __NR_exit 1
-#define __NR_fork 2
-#define __NR_read 3
-#define __NR_write 4
-#define __NR_open 5
-#define __NR_close 6
-#define __NR_restart_syscall 7
-#define __NR_creat 8
-#define __NR_link 9
-#define __NR_unlink 10
-#define __NR_execve 11
-#define __NR_chdir 12
-#define __NR_mknod 14
-#define __NR_chmod 15
-#define __NR_lseek 19
-#define __NR_getpid 20
-#define __NR_mount 21
-#define __NR_umount 22
-#define __NR_ptrace 26
-#define __NR_alarm 27
-#define __NR_pause 29
-#define __NR_utime 30
-#define __NR_access 33
-#define __NR_nice 34
-#define __NR_sync 36
-#define __NR_kill 37
-#define __NR_rename 38
-#define __NR_mkdir 39
-#define __NR_rmdir 40
-#define __NR_dup 41
-#define __NR_pipe 42
-#define __NR_times 43
-#define __NR_brk 45
-#define __NR_signal 48
-#define __NR_acct 51
-#define __NR_umount2 52
-#define __NR_ioctl 54
-#define __NR_fcntl 55
-#define __NR_setpgid 57
-#define __NR_umask 60
-#define __NR_chroot 61
-#define __NR_ustat 62
-#define __NR_dup2 63
-#define __NR_getppid 64
-#define __NR_getpgrp 65
-#define __NR_setsid 66
-#define __NR_sigaction 67
-#define __NR_sigsuspend 72
-#define __NR_sigpending 73
-#define __NR_sethostname 74
-#define __NR_setrlimit 75
-#define __NR_getrusage 77
-#define __NR_gettimeofday 78
-#define __NR_settimeofday 79
-#define __NR_symlink 83
-#define __NR_readlink 85
-#define __NR_uselib 86
-#define __NR_swapon 87
-#define __NR_reboot 88
-#define __NR_readdir 89
-#define __NR_mmap 90
-#define __NR_munmap 91
-#define __NR_truncate 92
-#define __NR_ftruncate 93
-#define __NR_fchmod 94
-#define __NR_getpriority 96
-#define __NR_setpriority 97
-#define __NR_statfs 99
-#define __NR_fstatfs 100
-#define __NR_socketcall 102
-#define __NR_syslog 103
-#define __NR_setitimer 104
-#define __NR_getitimer 105
-#define __NR_stat 106
-#define __NR_lstat 107
-#define __NR_fstat 108
-#define __NR_lookup_dcookie 110
-#define __NR_vhangup 111
-#define __NR_idle 112
-#define __NR_wait4 114
-#define __NR_swapoff 115
-#define __NR_sysinfo 116
-#define __NR_ipc 117
-#define __NR_fsync 118
-#define __NR_sigreturn 119
-#define __NR_clone 120
-#define __NR_setdomainname 121
-#define __NR_uname 122
-#define __NR_adjtimex 124
-#define __NR_mprotect 125
-#define __NR_sigprocmask 126
-#define __NR_create_module 127
-#define __NR_init_module 128
-#define __NR_delete_module 129
-#define __NR_get_kernel_syms 130
-#define __NR_quotactl 131
-#define __NR_getpgid 132
-#define __NR_fchdir 133
-#define __NR_bdflush 134
-#define __NR_sysfs 135
-#define __NR_personality 136
-#define __NR_afs_syscall 137 /* Syscall for Andrew File System */
-#define __NR_getdents 141
-#define __NR_flock 143
-#define __NR_msync 144
-#define __NR_readv 145
-#define __NR_writev 146
-#define __NR_getsid 147
-#define __NR_fdatasync 148
-#define __NR__sysctl 149
-#define __NR_mlock 150
-#define __NR_munlock 151
-#define __NR_mlockall 152
-#define __NR_munlockall 153
-#define __NR_sched_setparam 154
-#define __NR_sched_getparam 155
-#define __NR_sched_setscheduler 156
-#define __NR_sched_getscheduler 157
-#define __NR_sched_yield 158
-#define __NR_sched_get_priority_max 159
-#define __NR_sched_get_priority_min 160
-#define __NR_sched_rr_get_interval 161
-#define __NR_nanosleep 162
-#define __NR_mremap 163
-#define __NR_query_module 167
-#define __NR_poll 168
-#define __NR_nfsservctl 169
-#define __NR_prctl 172
-#define __NR_rt_sigreturn 173
-#define __NR_rt_sigaction 174
-#define __NR_rt_sigprocmask 175
-#define __NR_rt_sigpending 176
-#define __NR_rt_sigtimedwait 177
-#define __NR_rt_sigqueueinfo 178
-#define __NR_rt_sigsuspend 179
-#define __NR_pread64 180
-#define __NR_pwrite64 181
-#define __NR_getcwd 183
-#define __NR_capget 184
-#define __NR_capset 185
-#define __NR_sigaltstack 186
-#define __NR_sendfile 187
-#define __NR_getpmsg 188
-#define __NR_putpmsg 189
-#define __NR_vfork 190
-#define __NR_pivot_root 217
-#define __NR_mincore 218
-#define __NR_madvise 219
-#define __NR_getdents64 220
-#define __NR_readahead 222
-#define __NR_setxattr 224
-#define __NR_lsetxattr 225
-#define __NR_fsetxattr 226
-#define __NR_getxattr 227
-#define __NR_lgetxattr 228
-#define __NR_fgetxattr 229
-#define __NR_listxattr 230
-#define __NR_llistxattr 231
-#define __NR_flistxattr 232
-#define __NR_removexattr 233
-#define __NR_lremovexattr 234
-#define __NR_fremovexattr 235
-#define __NR_gettid 236
-#define __NR_tkill 237
-#define __NR_futex 238
-#define __NR_sched_setaffinity 239
-#define __NR_sched_getaffinity 240
-#define __NR_tgkill 241
-/* Number 242 is reserved for tux */
-#define __NR_io_setup 243
-#define __NR_io_destroy 244
-#define __NR_io_getevents 245
-#define __NR_io_submit 246
-#define __NR_io_cancel 247
-#define __NR_exit_group 248
-#define __NR_epoll_create 249
-#define __NR_epoll_ctl 250
-#define __NR_epoll_wait 251
-#define __NR_set_tid_address 252
-#define __NR_fadvise64 253
-#define __NR_timer_create 254
-#define __NR_timer_settime 255
-#define __NR_timer_gettime 256
-#define __NR_timer_getoverrun 257
-#define __NR_timer_delete 258
-#define __NR_clock_settime 259
-#define __NR_clock_gettime 260
-#define __NR_clock_getres 261
-#define __NR_clock_nanosleep 262
-/* Number 263 is reserved for vserver */
-#define __NR_statfs64 265
-#define __NR_fstatfs64 266
-#define __NR_remap_file_pages 267
-#define __NR_mbind 268
-#define __NR_get_mempolicy 269
-#define __NR_set_mempolicy 270
-#define __NR_mq_open 271
-#define __NR_mq_unlink 272
-#define __NR_mq_timedsend 273
-#define __NR_mq_timedreceive 274
-#define __NR_mq_notify 275
-#define __NR_mq_getsetattr 276
-#define __NR_kexec_load 277
-#define __NR_add_key 278
-#define __NR_request_key 279
-#define __NR_keyctl 280
-#define __NR_waitid 281
-#define __NR_ioprio_set 282
-#define __NR_ioprio_get 283
-#define __NR_inotify_init 284
-#define __NR_inotify_add_watch 285
-#define __NR_inotify_rm_watch 286
-#define __NR_migrate_pages 287
-#define __NR_openat 288
-#define __NR_mkdirat 289
-#define __NR_mknodat 290
-#define __NR_fchownat 291
-#define __NR_futimesat 292
-#define __NR_unlinkat 294
-#define __NR_renameat 295
-#define __NR_linkat 296
-#define __NR_symlinkat 297
-#define __NR_readlinkat 298
-#define __NR_fchmodat 299
-#define __NR_faccessat 300
-#define __NR_pselect6 301
-#define __NR_ppoll 302
-#define __NR_unshare 303
-#define __NR_set_robust_list 304
-#define __NR_get_robust_list 305
-#define __NR_splice 306
-#define __NR_sync_file_range 307
-#define __NR_tee 308
-#define __NR_vmsplice 309
-#define __NR_move_pages 310
-#define __NR_getcpu 311
-#define __NR_epoll_pwait 312
-#define __NR_utimes 313
-#define __NR_fallocate 314
-#define __NR_utimensat 315
-#define __NR_signalfd 316
-#define __NR_timerfd 317
-#define __NR_eventfd 318
-#define __NR_timerfd_create 319
-#define __NR_timerfd_settime 320
-#define __NR_timerfd_gettime 321
-#define __NR_signalfd4 322
-#define __NR_eventfd2 323
-#define __NR_inotify_init1 324
-#define __NR_pipe2 325
-#define __NR_dup3 326
-#define __NR_epoll_create1 327
-#define __NR_preadv 328
-#define __NR_pwritev 329
-#define __NR_rt_tgsigqueueinfo 330
-#define __NR_perf_event_open 331
-#define __NR_fanotify_init 332
-#define __NR_fanotify_mark 333
-#define __NR_prlimit64 334
-#define __NR_name_to_handle_at 335
-#define __NR_open_by_handle_at 336
-#define __NR_clock_adjtime 337
-#define __NR_syncfs 338
-#define __NR_setns 339
-#define __NR_process_vm_readv 340
-#define __NR_process_vm_writev 341
-#define __NR_s390_runtime_instr 342
-#define __NR_kcmp 343
-#define __NR_finit_module 344
-#define __NR_sched_setattr 345
-#define __NR_sched_getattr 346
-#define __NR_renameat2 347
-#define __NR_seccomp 348
-#define __NR_getrandom 349
-#define __NR_memfd_create 350
-#define __NR_bpf 351
-#define __NR_s390_pci_mmio_write 352
-#define __NR_s390_pci_mmio_read 353
-#define __NR_execveat 354
-#define __NR_userfaultfd 355
-#define __NR_membarrier 356
-#define __NR_recvmmsg 357
-#define __NR_sendmmsg 358
-#define __NR_socket 359
-#define __NR_socketpair 360
-#define __NR_bind 361
-#define __NR_connect 362
-#define __NR_listen 363
-#define __NR_accept4 364
-#define __NR_getsockopt 365
-#define __NR_setsockopt 366
-#define __NR_getsockname 367
-#define __NR_getpeername 368
-#define __NR_sendto 369
-#define __NR_sendmsg 370
-#define __NR_recvfrom 371
-#define __NR_recvmsg 372
-#define __NR_shutdown 373
-#define __NR_mlock2 374
-#define __NR_copy_file_range 375
-#define __NR_preadv2 376
-#define __NR_pwritev2 377
-#define __NR_s390_guarded_storage 378
-#define __NR_statx 379
-#define __NR_s390_sthyi 380
-#define NR_syscalls 381
-
-/*
- * There are some system calls that are not present on 64 bit, some
- * have a different name although they do the same (e.g. __NR_chown32
- * is __NR_chown on 64 bit).
- */
-#ifndef __s390x__
-
-#define __NR_time 13
-#define __NR_lchown 16
-#define __NR_setuid 23
-#define __NR_getuid 24
-#define __NR_stime 25
-#define __NR_setgid 46
-#define __NR_getgid 47
-#define __NR_geteuid 49
-#define __NR_getegid 50
-#define __NR_setreuid 70
-#define __NR_setregid 71
-#define __NR_getrlimit 76
-#define __NR_getgroups 80
-#define __NR_setgroups 81
-#define __NR_fchown 95
-#define __NR_ioperm 101
-#define __NR_setfsuid 138
-#define __NR_setfsgid 139
-#define __NR__llseek 140
-#define __NR__newselect 142
-#define __NR_setresuid 164
-#define __NR_getresuid 165
-#define __NR_setresgid 170
-#define __NR_getresgid 171
-#define __NR_chown 182
-#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */
-#define __NR_mmap2 192
-#define __NR_truncate64 193
-#define __NR_ftruncate64 194
-#define __NR_stat64 195
-#define __NR_lstat64 196
-#define __NR_fstat64 197
-#define __NR_lchown32 198
-#define __NR_getuid32 199
-#define __NR_getgid32 200
-#define __NR_geteuid32 201
-#define __NR_getegid32 202
-#define __NR_setreuid32 203
-#define __NR_setregid32 204
-#define __NR_getgroups32 205
-#define __NR_setgroups32 206
-#define __NR_fchown32 207
-#define __NR_setresuid32 208
-#define __NR_getresuid32 209
-#define __NR_setresgid32 210
-#define __NR_getresgid32 211
-#define __NR_chown32 212
-#define __NR_setuid32 213
-#define __NR_setgid32 214
-#define __NR_setfsuid32 215
-#define __NR_setfsgid32 216
-#define __NR_fcntl64 221
-#define __NR_sendfile64 223
-#define __NR_fadvise64_64 264
-#define __NR_fstatat64 293
-
-#else
-
-#define __NR_select 142
-#define __NR_getrlimit 191 /* SuS compliant getrlimit */
-#define __NR_lchown 198
-#define __NR_getuid 199
-#define __NR_getgid 200
-#define __NR_geteuid 201
-#define __NR_getegid 202
-#define __NR_setreuid 203
-#define __NR_setregid 204
-#define __NR_getgroups 205
-#define __NR_setgroups 206
-#define __NR_fchown 207
-#define __NR_setresuid 208
-#define __NR_getresuid 209
-#define __NR_setresgid 210
-#define __NR_getresgid 211
-#define __NR_chown 212
-#define __NR_setuid 213
-#define __NR_setgid 214
-#define __NR_setfsuid 215
-#define __NR_setfsgid 216
-#define __NR_newfstatat 293
-
-#endif
-
-#endif /* _UAPI_ASM_S390_UNISTD_H_ */
diff --git a/tools/arch/x86/include/asm/cpufeatures.h b/tools/arch/x86/include/asm/cpufeatures.h
index 1d9199e1c2ad..0dfe4d3f74e2 100644
--- a/tools/arch/x86/include/asm/cpufeatures.h
+++ b/tools/arch/x86/include/asm/cpufeatures.h
@@ -210,6 +210,7 @@

#define X86_FEATURE_MBA ( 7*32+18) /* Memory Bandwidth Allocation */
#define X86_FEATURE_RSB_CTXSW ( 7*32+19) /* "" Fill RSB on context switches */
+#define X86_FEATURE_SEV ( 7*32+20) /* AMD Secure Encrypted Virtualization */

#define X86_FEATURE_USE_IBPB ( 7*32+21) /* "" Indirect Branch Prediction Barrier enabled */

diff --git a/tools/include/uapi/drm/i915_drm.h b/tools/include/uapi/drm/i915_drm.h
index ac3c6503ca27..536ee4febd74 100644
--- a/tools/include/uapi/drm/i915_drm.h
+++ b/tools/include/uapi/drm/i915_drm.h
@@ -86,6 +86,62 @@ enum i915_mocs_table_index {
I915_MOCS_CACHED,
};

+/*
+ * Different engines serve different roles, and there may be more than one
+ * engine serving each role. enum drm_i915_gem_engine_class provides a
+ * classification of the role of the engine, which may be used when requesting
+ * operations to be performed on a certain subset of engines, or for providing
+ * information about that group.
+ */
+enum drm_i915_gem_engine_class {
+ I915_ENGINE_CLASS_RENDER = 0,
+ I915_ENGINE_CLASS_COPY = 1,
+ I915_ENGINE_CLASS_VIDEO = 2,
+ I915_ENGINE_CLASS_VIDEO_ENHANCE = 3,
+
+ I915_ENGINE_CLASS_INVALID = -1
+};
+
+/**
+ * DOC: perf_events exposed by i915 through /sys/bus/event_sources/drivers/i915
+ *
+ */
+
+enum drm_i915_pmu_engine_sample {
+ I915_SAMPLE_BUSY = 0,
+ I915_SAMPLE_WAIT = 1,
+ I915_SAMPLE_SEMA = 2
+};
+
+#define I915_PMU_SAMPLE_BITS (4)
+#define I915_PMU_SAMPLE_MASK (0xf)
+#define I915_PMU_SAMPLE_INSTANCE_BITS (8)
+#define I915_PMU_CLASS_SHIFT \
+ (I915_PMU_SAMPLE_BITS + I915_PMU_SAMPLE_INSTANCE_BITS)
+
+#define __I915_PMU_ENGINE(class, instance, sample) \
+ ((class) << I915_PMU_CLASS_SHIFT | \
+ (instance) << I915_PMU_SAMPLE_BITS | \
+ (sample))
+
+#define I915_PMU_ENGINE_BUSY(class, instance) \
+ __I915_PMU_ENGINE(class, instance, I915_SAMPLE_BUSY)
+
+#define I915_PMU_ENGINE_WAIT(class, instance) \
+ __I915_PMU_ENGINE(class, instance, I915_SAMPLE_WAIT)
+
+#define I915_PMU_ENGINE_SEMA(class, instance) \
+ __I915_PMU_ENGINE(class, instance, I915_SAMPLE_SEMA)
+
+#define __I915_PMU_OTHER(x) (__I915_PMU_ENGINE(0xff, 0xff, 0xf) + 1 + (x))
+
+#define I915_PMU_ACTUAL_FREQUENCY __I915_PMU_OTHER(0)
+#define I915_PMU_REQUESTED_FREQUENCY __I915_PMU_OTHER(1)
+#define I915_PMU_INTERRUPTS __I915_PMU_OTHER(2)
+#define I915_PMU_RC6_RESIDENCY __I915_PMU_OTHER(3)
+
+#define I915_PMU_LAST I915_PMU_RC6_RESIDENCY
+
/* Each region is a minimum of 16k, and there are at most 255 of them.
*/
#define I915_NR_TEX_REGIONS 255 /* table size 2k - maximum due to use
@@ -450,6 +506,27 @@ typedef struct drm_i915_irq_wait {
*/
#define I915_PARAM_HAS_EXEC_FENCE_ARRAY 49

+/*
+ * Query whether every context (both per-file default and user created) is
+ * isolated (insofar as HW supports). If this parameter is not true, then
+ * freshly created contexts may inherit values from an existing context,
+ * rather than default HW values. If true, it also ensures (insofar as HW
+ * supports) that all state set by this context will not leak to any other
+ * context.
+ *
+ * As not every engine across every gen support contexts, the returned
+ * value reports the support of context isolation for individual engines by
+ * returning a bitmask of each engine class set to true if that class supports
+ * isolation.
+ */
+#define I915_PARAM_HAS_CONTEXT_ISOLATION 50
+
+/* Frequency of the command streamer timestamps given by the *_TIMESTAMP
+ * registers. This used to be fixed per platform but from CNL onwards, this
+ * might vary depending on the parts.
+ */
+#define I915_PARAM_CS_TIMESTAMP_FREQUENCY 51
+
typedef struct drm_i915_getparam {
__s32 param;
/*
diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h
index 8616131e2c61..6d9447700e18 100644
--- a/tools/include/uapi/linux/if_link.h
+++ b/tools/include/uapi/linux/if_link.h
@@ -163,6 +163,7 @@ enum {
IFLA_IF_NETNSID,
IFLA_CARRIER_UP_COUNT,
IFLA_CARRIER_DOWN_COUNT,
+ IFLA_NEW_IFINDEX,
__IFLA_MAX
};

diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h
index 8fb90a0819c3..0fb5ef939732 100644
--- a/tools/include/uapi/linux/kvm.h
+++ b/tools/include/uapi/linux/kvm.h
@@ -1362,6 +1362,96 @@ struct kvm_s390_ucas_mapping {
/* Available with KVM_CAP_S390_CMMA_MIGRATION */
#define KVM_S390_GET_CMMA_BITS _IOWR(KVMIO, 0xb8, struct kvm_s390_cmma_log)
#define KVM_S390_SET_CMMA_BITS _IOW(KVMIO, 0xb9, struct kvm_s390_cmma_log)
+/* Memory Encryption Commands */
+#define KVM_MEMORY_ENCRYPT_OP _IOWR(KVMIO, 0xba, unsigned long)
+
+struct kvm_enc_region {
+ __u64 addr;
+ __u64 size;
+};
+
+#define KVM_MEMORY_ENCRYPT_REG_REGION _IOR(KVMIO, 0xbb, struct kvm_enc_region)
+#define KVM_MEMORY_ENCRYPT_UNREG_REGION _IOR(KVMIO, 0xbc, struct kvm_enc_region)
+
+/* Secure Encrypted Virtualization command */
+enum sev_cmd_id {
+ /* Guest initialization commands */
+ KVM_SEV_INIT = 0,
+ KVM_SEV_ES_INIT,
+ /* Guest launch commands */
+ KVM_SEV_LAUNCH_START,
+ KVM_SEV_LAUNCH_UPDATE_DATA,
+ KVM_SEV_LAUNCH_UPDATE_VMSA,
+ KVM_SEV_LAUNCH_SECRET,
+ KVM_SEV_LAUNCH_MEASURE,
+ KVM_SEV_LAUNCH_FINISH,
+ /* Guest migration commands (outgoing) */
+ KVM_SEV_SEND_START,
+ KVM_SEV_SEND_UPDATE_DATA,
+ KVM_SEV_SEND_UPDATE_VMSA,
+ KVM_SEV_SEND_FINISH,
+ /* Guest migration commands (incoming) */
+ KVM_SEV_RECEIVE_START,
+ KVM_SEV_RECEIVE_UPDATE_DATA,
+ KVM_SEV_RECEIVE_UPDATE_VMSA,
+ KVM_SEV_RECEIVE_FINISH,
+ /* Guest status and debug commands */
+ KVM_SEV_GUEST_STATUS,
+ KVM_SEV_DBG_DECRYPT,
+ KVM_SEV_DBG_ENCRYPT,
+ /* Guest certificates commands */
+ KVM_SEV_CERT_EXPORT,
+
+ KVM_SEV_NR_MAX,
+};
+
+struct kvm_sev_cmd {
+ __u32 id;
+ __u64 data;
+ __u32 error;
+ __u32 sev_fd;
+};
+
+struct kvm_sev_launch_start {
+ __u32 handle;
+ __u32 policy;
+ __u64 dh_uaddr;
+ __u32 dh_len;
+ __u64 session_uaddr;
+ __u32 session_len;
+};
+
+struct kvm_sev_launch_update_data {
+ __u64 uaddr;
+ __u32 len;
+};
+
+
+struct kvm_sev_launch_secret {
+ __u64 hdr_uaddr;
+ __u32 hdr_len;
+ __u64 guest_uaddr;
+ __u32 guest_len;
+ __u64 trans_uaddr;
+ __u32 trans_len;
+};
+
+struct kvm_sev_launch_measure {
+ __u64 uaddr;
+ __u32 len;
+};
+
+struct kvm_sev_guest_status {
+ __u32 handle;
+ __u32 policy;
+ __u32 state;
+};
+
+struct kvm_sev_dbg {
+ __u64 src_uaddr;
+ __u64 dst_uaddr;
+ __u32 len;
+};

#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
#define KVM_DEV_ASSIGN_PCI_2_3 (1 << 1)
diff --git a/tools/perf/Documentation/perf-data.txt b/tools/perf/Documentation/perf-data.txt
index f0796a47dfa3..90bb4aabe4f8 100644
--- a/tools/perf/Documentation/perf-data.txt
+++ b/tools/perf/Documentation/perf-data.txt
@@ -30,6 +30,10 @@ OPTIONS for 'convert'
-i::
Specify input perf data file path.

+-f::
+--force::
+ Don't complain, do it.
+
-v::
--verbose::
Be more verbose (show counter open errors, etc).
diff --git a/tools/perf/arch/s390/Makefile b/tools/perf/arch/s390/Makefile
index 48228de415d0..dfa6e3103437 100644
--- a/tools/perf/arch/s390/Makefile
+++ b/tools/perf/arch/s390/Makefile
@@ -10,15 +10,19 @@ PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1

out := $(OUTPUT)arch/s390/include/generated/asm
header := $(out)/syscalls_64.c
-sysdef := $(srctree)/tools/arch/s390/include/uapi/asm/unistd.h
-sysprf := $(srctree)/tools/perf/arch/s390/entry/syscalls/
+syskrn := $(srctree)/arch/s390/kernel/syscalls/syscall.tbl
+sysprf := $(srctree)/tools/perf/arch/s390/entry/syscalls
+sysdef := $(sysprf)/syscall.tbl
systbl := $(sysprf)/mksyscalltbl

# Create output directory if not already present
_dummy := $(shell [ -d '$(out)' ] || mkdir -p '$(out)')

$(header): $(sysdef) $(systbl)
- $(Q)$(SHELL) '$(systbl)' '$(CC)' $(sysdef) > $@
+ @(test -d ../../kernel -a -d ../../tools -a -d ../perf && ( \
+ (diff -B $(sysdef) $(syskrn) >/dev/null) \
+ || echo "Warning: Kernel ABI header at '$(sysdef)' differs from latest version at '$(syskrn)'" >&2 )) || true
+ $(Q)$(SHELL) '$(systbl)' $(sysdef) > $@

clean::
$(call QUIET_CLEAN, s390) $(RM) $(header)
diff --git a/tools/perf/arch/s390/entry/syscalls/mksyscalltbl b/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
index 7fa0d0abd419..72ecbb676370 100755
--- a/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
+++ b/tools/perf/arch/s390/entry/syscalls/mksyscalltbl
@@ -3,25 +3,23 @@
#
# Generate system call table for perf
#
-#
-# Copyright IBM Corp. 2017
+# Copyright IBM Corp. 2017, 2018
# Author(s): Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
#

-gcc=$1
-input=$2
+SYSCALL_TBL=$1

-if ! test -r $input; then
+if ! test -r $SYSCALL_TBL; then
echo "Could not read input file" >&2
exit 1
fi

create_table()
{
- local max_nr
+ local max_nr nr abi sc discard

echo 'static const char *syscalltbl_s390_64[] = {'
- while read sc nr; do
+ while read nr abi sc discard; do
printf '\t[%d] = "%s",\n' $nr $sc
max_nr=$nr
done
@@ -29,8 +27,6 @@ create_table()
echo "#define SYSCALLTBL_S390_64_MAX_ID $max_nr"
}

-
-$gcc -m64 -E -dM -x c $input \
- |sed -ne 's/^#define __NR_//p' \
- |sort -t' ' -k2 -nu \
+grep -E "^[[:digit:]]+[[:space:]]+(common|64)" $SYSCALL_TBL \
+ |sort -k1 -n \
|create_table
diff --git a/tools/perf/arch/s390/entry/syscalls/syscall.tbl b/tools/perf/arch/s390/entry/syscalls/syscall.tbl
new file mode 100644
index 000000000000..b38d48464368
--- /dev/null
+++ b/tools/perf/arch/s390/entry/syscalls/syscall.tbl
@@ -0,0 +1,390 @@
+# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+#
+# System call table for s390
+#
+# Format:
+#
+# <nr> <abi> <syscall> <entry-64bit> <compat-entry>
+#
+# where <abi> can be common, 64, or 32
+
+1 common exit sys_exit sys_exit
+2 common fork sys_fork sys_fork
+3 common read sys_read compat_sys_s390_read
+4 common write sys_write compat_sys_s390_write
+5 common open sys_open compat_sys_open
+6 common close sys_close sys_close
+7 common restart_syscall sys_restart_syscall sys_restart_syscall
+8 common creat sys_creat compat_sys_creat
+9 common link sys_link compat_sys_link
+10 common unlink sys_unlink compat_sys_unlink
+11 common execve sys_execve compat_sys_execve
+12 common chdir sys_chdir compat_sys_chdir
+13 32 time - compat_sys_time
+14 common mknod sys_mknod compat_sys_mknod
+15 common chmod sys_chmod compat_sys_chmod
+16 32 lchown - compat_sys_s390_lchown16
+19 common lseek sys_lseek compat_sys_lseek
+20 common getpid sys_getpid sys_getpid
+21 common mount sys_mount compat_sys_mount
+22 common umount sys_oldumount compat_sys_oldumount
+23 32 setuid - compat_sys_s390_setuid16
+24 32 getuid - compat_sys_s390_getuid16
+25 32 stime - compat_sys_stime
+26 common ptrace sys_ptrace compat_sys_ptrace
+27 common alarm sys_alarm sys_alarm
+29 common pause sys_pause sys_pause
+30 common utime sys_utime compat_sys_utime
+33 common access sys_access compat_sys_access
+34 common nice sys_nice sys_nice
+36 common sync sys_sync sys_sync
+37 common kill sys_kill sys_kill
+38 common rename sys_rename compat_sys_rename
+39 common mkdir sys_mkdir compat_sys_mkdir
+40 common rmdir sys_rmdir compat_sys_rmdir
+41 common dup sys_dup sys_dup
+42 common pipe sys_pipe compat_sys_pipe
+43 common times sys_times compat_sys_times
+45 common brk sys_brk compat_sys_brk
+46 32 setgid - compat_sys_s390_setgid16
+47 32 getgid - compat_sys_s390_getgid16
+48 common signal sys_signal compat_sys_signal
+49 32 geteuid - compat_sys_s390_geteuid16
+50 32 getegid - compat_sys_s390_getegid16
+51 common acct sys_acct compat_sys_acct
+52 common umount2 sys_umount compat_sys_umount
+54 common ioctl sys_ioctl compat_sys_ioctl
+55 common fcntl sys_fcntl compat_sys_fcntl
+57 common setpgid sys_setpgid sys_setpgid
+60 common umask sys_umask sys_umask
+61 common chroot sys_chroot compat_sys_chroot
+62 common ustat sys_ustat compat_sys_ustat
+63 common dup2 sys_dup2 sys_dup2
+64 common getppid sys_getppid sys_getppid
+65 common getpgrp sys_getpgrp sys_getpgrp
+66 common setsid sys_setsid sys_setsid
+67 common sigaction sys_sigaction compat_sys_sigaction
+70 32 setreuid - compat_sys_s390_setreuid16
+71 32 setregid - compat_sys_s390_setregid16
+72 common sigsuspend sys_sigsuspend compat_sys_sigsuspend
+73 common sigpending sys_sigpending compat_sys_sigpending
+74 common sethostname sys_sethostname compat_sys_sethostname
+75 common setrlimit sys_setrlimit compat_sys_setrlimit
+76 32 getrlimit - compat_sys_old_getrlimit
+77 common getrusage sys_getrusage compat_sys_getrusage
+78 common gettimeofday sys_gettimeofday compat_sys_gettimeofday
+79 common settimeofday sys_settimeofday compat_sys_settimeofday
+80 32 getgroups - compat_sys_s390_getgroups16
+81 32 setgroups - compat_sys_s390_setgroups16
+83 common symlink sys_symlink compat_sys_symlink
+85 common readlink sys_readlink compat_sys_readlink
+86 common uselib sys_uselib compat_sys_uselib
+87 common swapon sys_swapon compat_sys_swapon
+88 common reboot sys_reboot compat_sys_reboot
+89 common readdir - compat_sys_old_readdir
+90 common mmap sys_old_mmap compat_sys_s390_old_mmap
+91 common munmap sys_munmap compat_sys_munmap
+92 common truncate sys_truncate compat_sys_truncate
+93 common ftruncate sys_ftruncate compat_sys_ftruncate
+94 common fchmod sys_fchmod sys_fchmod
+95 32 fchown - compat_sys_s390_fchown16
+96 common getpriority sys_getpriority sys_getpriority
+97 common setpriority sys_setpriority sys_setpriority
+99 common statfs sys_statfs compat_sys_statfs
+100 common fstatfs sys_fstatfs compat_sys_fstatfs
+101 32 ioperm - -
+102 common socketcall sys_socketcall compat_sys_socketcall
+103 common syslog sys_syslog compat_sys_syslog
+104 common setitimer sys_setitimer compat_sys_setitimer
+105 common getitimer sys_getitimer compat_sys_getitimer
+106 common stat sys_newstat compat_sys_newstat
+107 common lstat sys_newlstat compat_sys_newlstat
+108 common fstat sys_newfstat compat_sys_newfstat
+110 common lookup_dcookie sys_lookup_dcookie compat_sys_lookup_dcookie
+111 common vhangup sys_vhangup sys_vhangup
+112 common idle - -
+114 common wait4 sys_wait4 compat_sys_wait4
+115 common swapoff sys_swapoff compat_sys_swapoff
+116 common sysinfo sys_sysinfo compat_sys_sysinfo
+117 common ipc sys_s390_ipc compat_sys_s390_ipc
+118 common fsync sys_fsync sys_fsync
+119 common sigreturn sys_sigreturn compat_sys_sigreturn
+120 common clone sys_clone compat_sys_clone
+121 common setdomainname sys_setdomainname compat_sys_setdomainname
+122 common uname sys_newuname compat_sys_newuname
+124 common adjtimex sys_adjtimex compat_sys_adjtimex
+125 common mprotect sys_mprotect compat_sys_mprotect
+126 common sigprocmask sys_sigprocmask compat_sys_sigprocmask
+127 common create_module - -
+128 common init_module sys_init_module compat_sys_init_module
+129 common delete_module sys_delete_module compat_sys_delete_module
+130 common get_kernel_syms - -
+131 common quotactl sys_quotactl compat_sys_quotactl
+132 common getpgid sys_getpgid sys_getpgid
+133 common fchdir sys_fchdir sys_fchdir
+134 common bdflush sys_bdflush compat_sys_bdflush
+135 common sysfs sys_sysfs compat_sys_sysfs
+136 common personality sys_s390_personality sys_s390_personality
+137 common afs_syscall - -
+138 32 setfsuid - compat_sys_s390_setfsuid16
+139 32 setfsgid - compat_sys_s390_setfsgid16
+140 32 _llseek - compat_sys_llseek
+141 common getdents sys_getdents compat_sys_getdents
+142 32 _newselect - compat_sys_select
+142 64 select sys_select -
+143 common flock sys_flock sys_flock
+144 common msync sys_msync compat_sys_msync
+145 common readv sys_readv compat_sys_readv
+146 common writev sys_writev compat_sys_writev
+147 common getsid sys_getsid sys_getsid
+148 common fdatasync sys_fdatasync sys_fdatasync
+149 common _sysctl sys_sysctl compat_sys_sysctl
+150 common mlock sys_mlock compat_sys_mlock
+151 common munlock sys_munlock compat_sys_munlock
+152 common mlockall sys_mlockall sys_mlockall
+153 common munlockall sys_munlockall sys_munlockall
+154 common sched_setparam sys_sched_setparam compat_sys_sched_setparam
+155 common sched_getparam sys_sched_getparam compat_sys_sched_getparam
+156 common sched_setscheduler sys_sched_setscheduler compat_sys_sched_setscheduler
+157 common sched_getscheduler sys_sched_getscheduler sys_sched_getscheduler
+158 common sched_yield sys_sched_yield sys_sched_yield
+159 common sched_get_priority_max sys_sched_get_priority_max sys_sched_get_priority_max
+160 common sched_get_priority_min sys_sched_get_priority_min sys_sched_get_priority_min
+161 common sched_rr_get_interval sys_sched_rr_get_interval compat_sys_sched_rr_get_interval
+162 common nanosleep sys_nanosleep compat_sys_nanosleep
+163 common mremap sys_mremap compat_sys_mremap
+164 32 setresuid - compat_sys_s390_setresuid16
+165 32 getresuid - compat_sys_s390_getresuid16
+167 common query_module - -
+168 common poll sys_poll compat_sys_poll
+169 common nfsservctl - -
+170 32 setresgid - compat_sys_s390_setresgid16
+171 32 getresgid - compat_sys_s390_getresgid16
+172 common prctl sys_prctl compat_sys_prctl
+173 common rt_sigreturn sys_rt_sigreturn compat_sys_rt_sigreturn
+174 common rt_sigaction sys_rt_sigaction compat_sys_rt_sigaction
+175 common rt_sigprocmask sys_rt_sigprocmask compat_sys_rt_sigprocmask
+176 common rt_sigpending sys_rt_sigpending compat_sys_rt_sigpending
+177 common rt_sigtimedwait sys_rt_sigtimedwait compat_sys_rt_sigtimedwait
+178 common rt_sigqueueinfo sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo
+179 common rt_sigsuspend sys_rt_sigsuspend compat_sys_rt_sigsuspend
+180 common pread64 sys_pread64 compat_sys_s390_pread64
+181 common pwrite64 sys_pwrite64 compat_sys_s390_pwrite64
+182 32 chown - compat_sys_s390_chown16
+183 common getcwd sys_getcwd compat_sys_getcwd
+184 common capget sys_capget compat_sys_capget
+185 common capset sys_capset compat_sys_capset
+186 common sigaltstack sys_sigaltstack compat_sys_sigaltstack
+187 common sendfile sys_sendfile64 compat_sys_sendfile
+188 common getpmsg - -
+189 common putpmsg - -
+190 common vfork sys_vfork sys_vfork
+191 32 ugetrlimit - compat_sys_getrlimit
+191 64 getrlimit sys_getrlimit -
+192 32 mmap2 - compat_sys_s390_mmap2
+193 32 truncate64 - compat_sys_s390_truncate64
+194 32 ftruncate64 - compat_sys_s390_ftruncate64
+195 32 stat64 - compat_sys_s390_stat64
+196 32 lstat64 - compat_sys_s390_lstat64
+197 32 fstat64 - compat_sys_s390_fstat64
+198 32 lchown32 - compat_sys_lchown
+198 64 lchown sys_lchown -
+199 32 getuid32 - sys_getuid
+199 64 getuid sys_getuid -
+200 32 getgid32 - sys_getgid
+200 64 getgid sys_getgid -
+201 32 geteuid32 - sys_geteuid
+201 64 geteuid sys_geteuid -
+202 32 getegid32 - sys_getegid
+202 64 getegid sys_getegid -
+203 32 setreuid32 - sys_setreuid
+203 64 setreuid sys_setreuid -
+204 32 setregid32 - sys_setregid
+204 64 setregid sys_setregid -
+205 32 getgroups32 - compat_sys_getgroups
+205 64 getgroups sys_getgroups -
+206 32 setgroups32 - compat_sys_setgroups
+206 64 setgroups sys_setgroups -
+207 32 fchown32 - sys_fchown
+207 64 fchown sys_fchown -
+208 32 setresuid32 - sys_setresuid
+208 64 setresuid sys_setresuid -
+209 32 getresuid32 - compat_sys_getresuid
+209 64 getresuid sys_getresuid -
+210 32 setresgid32 - sys_setresgid
+210 64 setresgid sys_setresgid -
+211 32 getresgid32 - compat_sys_getresgid
+211 64 getresgid sys_getresgid -
+212 32 chown32 - compat_sys_chown
+212 64 chown sys_chown -
+213 32 setuid32 - sys_setuid
+213 64 setuid sys_setuid -
+214 32 setgid32 - sys_setgid
+214 64 setgid sys_setgid -
+215 32 setfsuid32 - sys_setfsuid
+215 64 setfsuid sys_setfsuid -
+216 32 setfsgid32 - sys_setfsgid
+216 64 setfsgid sys_setfsgid -
+217 common pivot_root sys_pivot_root compat_sys_pivot_root
+218 common mincore sys_mincore compat_sys_mincore
+219 common madvise sys_madvise compat_sys_madvise
+220 common getdents64 sys_getdents64 compat_sys_getdents64
+221 32 fcntl64 - compat_sys_fcntl64
+222 common readahead sys_readahead compat_sys_s390_readahead
+223 32 sendfile64 - compat_sys_sendfile64
+224 common setxattr sys_setxattr compat_sys_setxattr
+225 common lsetxattr sys_lsetxattr compat_sys_lsetxattr
+226 common fsetxattr sys_fsetxattr compat_sys_fsetxattr
+227 common getxattr sys_getxattr compat_sys_getxattr
+228 common lgetxattr sys_lgetxattr compat_sys_lgetxattr
+229 common fgetxattr sys_fgetxattr compat_sys_fgetxattr
+230 common listxattr sys_listxattr compat_sys_listxattr
+231 common llistxattr sys_llistxattr compat_sys_llistxattr
+232 common flistxattr sys_flistxattr compat_sys_flistxattr
+233 common removexattr sys_removexattr compat_sys_removexattr
+234 common lremovexattr sys_lremovexattr compat_sys_lremovexattr
+235 common fremovexattr sys_fremovexattr compat_sys_fremovexattr
+236 common gettid sys_gettid sys_gettid
+237 common tkill sys_tkill sys_tkill
+238 common futex sys_futex compat_sys_futex
+239 common sched_setaffinity sys_sched_setaffinity compat_sys_sched_setaffinity
+240 common sched_getaffinity sys_sched_getaffinity compat_sys_sched_getaffinity
+241 common tgkill sys_tgkill sys_tgkill
+243 common io_setup sys_io_setup compat_sys_io_setup
+244 common io_destroy sys_io_destroy compat_sys_io_destroy
+245 common io_getevents sys_io_getevents compat_sys_io_getevents
+246 common io_submit sys_io_submit compat_sys_io_submit
+247 common io_cancel sys_io_cancel compat_sys_io_cancel
+248 common exit_group sys_exit_group sys_exit_group
+249 common epoll_create sys_epoll_create sys_epoll_create
+250 common epoll_ctl sys_epoll_ctl compat_sys_epoll_ctl
+251 common epoll_wait sys_epoll_wait compat_sys_epoll_wait
+252 common set_tid_address sys_set_tid_address compat_sys_set_tid_address
+253 common fadvise64 sys_fadvise64_64 compat_sys_s390_fadvise64
+254 common timer_create sys_timer_create compat_sys_timer_create
+255 common timer_settime sys_timer_settime compat_sys_timer_settime
+256 common timer_gettime sys_timer_gettime compat_sys_timer_gettime
+257 common timer_getoverrun sys_timer_getoverrun sys_timer_getoverrun
+258 common timer_delete sys_timer_delete sys_timer_delete
+259 common clock_settime sys_clock_settime compat_sys_clock_settime
+260 common clock_gettime sys_clock_gettime compat_sys_clock_gettime
+261 common clock_getres sys_clock_getres compat_sys_clock_getres
+262 common clock_nanosleep sys_clock_nanosleep compat_sys_clock_nanosleep
+264 32 fadvise64_64 - compat_sys_s390_fadvise64_64
+265 common statfs64 sys_statfs64 compat_sys_statfs64
+266 common fstatfs64 sys_fstatfs64 compat_sys_fstatfs64
+267 common remap_file_pages sys_remap_file_pages compat_sys_remap_file_pages
+268 common mbind sys_mbind compat_sys_mbind
+269 common get_mempolicy sys_get_mempolicy compat_sys_get_mempolicy
+270 common set_mempolicy sys_set_mempolicy compat_sys_set_mempolicy
+271 common mq_open sys_mq_open compat_sys_mq_open
+272 common mq_unlink sys_mq_unlink compat_sys_mq_unlink
+273 common mq_timedsend sys_mq_timedsend compat_sys_mq_timedsend
+274 common mq_timedreceive sys_mq_timedreceive compat_sys_mq_timedreceive
+275 common mq_notify sys_mq_notify compat_sys_mq_notify
+276 common mq_getsetattr sys_mq_getsetattr compat_sys_mq_getsetattr
+277 common kexec_load sys_kexec_load compat_sys_kexec_load
+278 common add_key sys_add_key compat_sys_add_key
+279 common request_key sys_request_key compat_sys_request_key
+280 common keyctl sys_keyctl compat_sys_keyctl
+281 common waitid sys_waitid compat_sys_waitid
+282 common ioprio_set sys_ioprio_set sys_ioprio_set
+283 common ioprio_get sys_ioprio_get sys_ioprio_get
+284 common inotify_init sys_inotify_init sys_inotify_init
+285 common inotify_add_watch sys_inotify_add_watch compat_sys_inotify_add_watch
+286 common inotify_rm_watch sys_inotify_rm_watch sys_inotify_rm_watch
+287 common migrate_pages sys_migrate_pages compat_sys_migrate_pages
+288 common openat sys_openat compat_sys_openat
+289 common mkdirat sys_mkdirat compat_sys_mkdirat
+290 common mknodat sys_mknodat compat_sys_mknodat
+291 common fchownat sys_fchownat compat_sys_fchownat
+292 common futimesat sys_futimesat compat_sys_futimesat
+293 32 fstatat64 - compat_sys_s390_fstatat64
+293 64 newfstatat sys_newfstatat -
+294 common unlinkat sys_unlinkat compat_sys_unlinkat
+295 common renameat sys_renameat compat_sys_renameat
+296 common linkat sys_linkat compat_sys_linkat
+297 common symlinkat sys_symlinkat compat_sys_symlinkat
+298 common readlinkat sys_readlinkat compat_sys_readlinkat
+299 common fchmodat sys_fchmodat compat_sys_fchmodat
+300 common faccessat sys_faccessat compat_sys_faccessat
+301 common pselect6 sys_pselect6 compat_sys_pselect6
+302 common ppoll sys_ppoll compat_sys_ppoll
+303 common unshare sys_unshare compat_sys_unshare
+304 common set_robust_list sys_set_robust_list compat_sys_set_robust_list
+305 common get_robust_list sys_get_robust_list compat_sys_get_robust_list
+306 common splice sys_splice compat_sys_splice
+307 common sync_file_range sys_sync_file_range compat_sys_s390_sync_file_range
+308 common tee sys_tee compat_sys_tee
+309 common vmsplice sys_vmsplice compat_sys_vmsplice
+310 common move_pages sys_move_pages compat_sys_move_pages
+311 common getcpu sys_getcpu compat_sys_getcpu
+312 common epoll_pwait sys_epoll_pwait compat_sys_epoll_pwait
+313 common utimes sys_utimes compat_sys_utimes
+314 common fallocate sys_fallocate compat_sys_s390_fallocate
+315 common utimensat sys_utimensat compat_sys_utimensat
+316 common signalfd sys_signalfd compat_sys_signalfd
+317 common timerfd - -
+318 common eventfd sys_eventfd sys_eventfd
+319 common timerfd_create sys_timerfd_create sys_timerfd_create
+320 common timerfd_settime sys_timerfd_settime compat_sys_timerfd_settime
+321 common timerfd_gettime sys_timerfd_gettime compat_sys_timerfd_gettime
+322 common signalfd4 sys_signalfd4 compat_sys_signalfd4
+323 common eventfd2 sys_eventfd2 sys_eventfd2
+324 common inotify_init1 sys_inotify_init1 sys_inotify_init1
+325 common pipe2 sys_pipe2 compat_sys_pipe2
+326 common dup3 sys_dup3 sys_dup3
+327 common epoll_create1 sys_epoll_create1 sys_epoll_create1
+328 common preadv sys_preadv compat_sys_preadv
+329 common pwritev sys_pwritev compat_sys_pwritev
+330 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
+331 common perf_event_open sys_perf_event_open compat_sys_perf_event_open
+332 common fanotify_init sys_fanotify_init sys_fanotify_init
+333 common fanotify_mark sys_fanotify_mark compat_sys_fanotify_mark
+334 common prlimit64 sys_prlimit64 compat_sys_prlimit64
+335 common name_to_handle_at sys_name_to_handle_at compat_sys_name_to_handle_at
+336 common open_by_handle_at sys_open_by_handle_at compat_sys_open_by_handle_at
+337 common clock_adjtime sys_clock_adjtime compat_sys_clock_adjtime
+338 common syncfs sys_syncfs sys_syncfs
+339 common setns sys_setns sys_setns
+340 common process_vm_readv sys_process_vm_readv compat_sys_process_vm_readv
+341 common process_vm_writev sys_process_vm_writev compat_sys_process_vm_writev
+342 common s390_runtime_instr sys_s390_runtime_instr sys_s390_runtime_instr
+343 common kcmp sys_kcmp compat_sys_kcmp
+344 common finit_module sys_finit_module compat_sys_finit_module
+345 common sched_setattr sys_sched_setattr compat_sys_sched_setattr
+346 common sched_getattr sys_sched_getattr compat_sys_sched_getattr
+347 common renameat2 sys_renameat2 compat_sys_renameat2
+348 common seccomp sys_seccomp compat_sys_seccomp
+349 common getrandom sys_getrandom compat_sys_getrandom
+350 common memfd_create sys_memfd_create compat_sys_memfd_create
+351 common bpf sys_bpf compat_sys_bpf
+352 common s390_pci_mmio_write sys_s390_pci_mmio_write compat_sys_s390_pci_mmio_write
+353 common s390_pci_mmio_read sys_s390_pci_mmio_read compat_sys_s390_pci_mmio_read
+354 common execveat sys_execveat compat_sys_execveat
+355 common userfaultfd sys_userfaultfd sys_userfaultfd
+356 common membarrier sys_membarrier sys_membarrier
+357 common recvmmsg sys_recvmmsg compat_sys_recvmmsg
+358 common sendmmsg sys_sendmmsg compat_sys_sendmmsg
+359 common socket sys_socket sys_socket
+360 common socketpair sys_socketpair compat_sys_socketpair
+361 common bind sys_bind compat_sys_bind
+362 common connect sys_connect compat_sys_connect
+363 common listen sys_listen sys_listen
+364 common accept4 sys_accept4 compat_sys_accept4
+365 common getsockopt sys_getsockopt compat_sys_getsockopt
+366 common setsockopt sys_setsockopt compat_sys_setsockopt
+367 common getsockname sys_getsockname compat_sys_getsockname
+368 common getpeername sys_getpeername compat_sys_getpeername
+369 common sendto sys_sendto compat_sys_sendto
+370 common sendmsg sys_sendmsg compat_sys_sendmsg
+371 common recvfrom sys_recvfrom compat_sys_recvfrom
+372 common recvmsg sys_recvmsg compat_sys_recvmsg
+373 common shutdown sys_shutdown sys_shutdown
+374 common mlock2 sys_mlock2 compat_sys_mlock2
+375 common copy_file_range sys_copy_file_range compat_sys_copy_file_range
+376 common preadv2 sys_preadv2 compat_sys_preadv2
+377 common pwritev2 sys_pwritev2 compat_sys_pwritev2
+378 common s390_guarded_storage sys_s390_guarded_storage compat_sys_s390_guarded_storage
+379 common statx sys_statx compat_sys_statx
+380 common s390_sthyi sys_s390_sthyi compat_sys_s390_sthyi
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index c0815a37fdb5..539c3d460158 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2245,7 +2245,7 @@ static int perf_c2c__browse_cacheline(struct hist_entry *he)
c2c_browser__update_nr_entries(browser);

while (1) {
- key = hist_browser__run(browser, "? - help");
+ key = hist_browser__run(browser, "? - help", true);

switch (key) {
case 's':
@@ -2314,7 +2314,7 @@ static int perf_c2c__hists_browse(struct hists *hists)
c2c_browser__update_nr_entries(browser);

while (1) {
- key = hist_browser__run(browser, "? - help");
+ key = hist_browser__run(browser, "? - help", true);

switch (key) {
case 'q':
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 42a52dcc41cd..4ad5dc649716 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -530,7 +530,8 @@ static int report__browse_hists(struct report *rep)
case 1:
ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
rep->min_percent,
- &session->header.env);
+ &session->header.env,
+ true);
/*
* Usually "ret" is the last pressed key, and we only
* care if the key notifies us to switch data file.
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index c6ccda52117d..b7c823ba8374 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -283,8 +283,9 @@ static void perf_top__print_sym_table(struct perf_top *top)

printf("%-*.*s\n", win_width, win_width, graph_dotted_line);

- if (hists->stats.nr_lost_warned !=
- hists->stats.nr_events[PERF_RECORD_LOST]) {
+ if (!top->record_opts.overwrite &&
+ (hists->stats.nr_lost_warned !=
+ hists->stats.nr_events[PERF_RECORD_LOST])) {
hists->stats.nr_lost_warned =
hists->stats.nr_events[PERF_RECORD_LOST];
color_fprintf(stdout, PERF_COLOR_RED,
@@ -611,7 +612,8 @@ static void *display_thread_tui(void *arg)

perf_evlist__tui_browse_hists(top->evlist, help, &hbt,
top->min_percent,
- &top->session->header.env);
+ &top->session->header.env,
+ !top->record_opts.overwrite);

done = 1;
return NULL;
@@ -807,15 +809,23 @@ static void perf_event__process_sample(struct perf_tool *tool,

static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
{
+ struct record_opts *opts = &top->record_opts;
+ struct perf_evlist *evlist = top->evlist;
struct perf_sample sample;
struct perf_evsel *evsel;
+ struct perf_mmap *md;
struct perf_session *session = top->session;
union perf_event *event;
struct machine *machine;
+ u64 end, start;
int ret;

- while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) {
- ret = perf_evlist__parse_sample(top->evlist, event, &sample);
+ md = opts->overwrite ? &evlist->overwrite_mmap[idx] : &evlist->mmap[idx];
+ if (perf_mmap__read_init(md, opts->overwrite, &start, &end) < 0)
+ return;
+
+ while ((event = perf_mmap__read_event(md, opts->overwrite, &start, end)) != NULL) {
+ ret = perf_evlist__parse_sample(evlist, event, &sample);
if (ret) {
pr_err("Can't parse sample, err = %d\n", ret);
goto next_event;
@@ -869,16 +879,120 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
} else
++session->evlist->stats.nr_unknown_events;
next_event:
- perf_evlist__mmap_consume(top->evlist, idx);
+ perf_mmap__consume(md, opts->overwrite);
}
+
+ perf_mmap__read_done(md);
}

static void perf_top__mmap_read(struct perf_top *top)
{
+ bool overwrite = top->record_opts.overwrite;
+ struct perf_evlist *evlist = top->evlist;
+ unsigned long long start, end;
int i;

+ start = rdclock();
+ if (overwrite)
+ perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_DATA_PENDING);
+
for (i = 0; i < top->evlist->nr_mmaps; i++)
perf_top__mmap_read_idx(top, i);
+
+ if (overwrite) {
+ perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY);
+ perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING);
+ }
+ end = rdclock();
+
+ if ((end - start) > (unsigned long long)top->delay_secs * NSEC_PER_SEC)
+ ui__warning("Too slow to read ring buffer.\n"
+ "Please try increasing the period (-c) or\n"
+ "decreasing the freq (-F) or\n"
+ "limiting the number of CPUs (-C)\n");
+}
+
+/*
+ * Check per-event overwrite term.
+ * perf top should support consistent term for all events.
+ * - All events don't have per-event term
+ * E.g. "cpu/cpu-cycles/,cpu/instructions/"
+ * Nothing change, return 0.
+ * - All events have same per-event term
+ * E.g. "cpu/cpu-cycles,no-overwrite/,cpu/instructions,no-overwrite/
+ * Using the per-event setting to replace the opts->overwrite if
+ * they are different, then return 0.
+ * - Events have different per-event term
+ * E.g. "cpu/cpu-cycles,overwrite/,cpu/instructions,no-overwrite/"
+ * Return -1
+ * - Some of the event set per-event term, but some not.
+ * E.g. "cpu/cpu-cycles/,cpu/instructions,no-overwrite/"
+ * Return -1
+ */
+static int perf_top__overwrite_check(struct perf_top *top)
+{
+ struct record_opts *opts = &top->record_opts;
+ struct perf_evlist *evlist = top->evlist;
+ struct perf_evsel_config_term *term;
+ struct list_head *config_terms;
+ struct perf_evsel *evsel;
+ int set, overwrite = -1;
+
+ evlist__for_each_entry(evlist, evsel) {
+ set = -1;
+ config_terms = &evsel->config_terms;
+ list_for_each_entry(term, config_terms, list) {
+ if (term->type == PERF_EVSEL__CONFIG_TERM_OVERWRITE)
+ set = term->val.overwrite ? 1 : 0;
+ }
+
+ /* no term for current and previous event (likely) */
+ if ((overwrite < 0) && (set < 0))
+ continue;
+
+ /* has term for both current and previous event, compare */
+ if ((overwrite >= 0) && (set >= 0) && (overwrite != set))
+ return -1;
+
+ /* no term for current event but has term for previous one */
+ if ((overwrite >= 0) && (set < 0))
+ return -1;
+
+ /* has term for current event */
+ if ((overwrite < 0) && (set >= 0)) {
+ /* if it's first event, set overwrite */
+ if (evsel == perf_evlist__first(evlist))
+ overwrite = set;
+ else
+ return -1;
+ }
+ }
+
+ if ((overwrite >= 0) && (opts->overwrite != overwrite))
+ opts->overwrite = overwrite;
+
+ return 0;
+}
+
+static int perf_top_overwrite_fallback(struct perf_top *top,
+ struct perf_evsel *evsel)
+{
+ struct record_opts *opts = &top->record_opts;
+ struct perf_evlist *evlist = top->evlist;
+ struct perf_evsel *counter;
+
+ if (!opts->overwrite)
+ return 0;
+
+ /* only fall back when first event fails */
+ if (evsel != perf_evlist__first(evlist))
+ return 0;
+
+ evlist__for_each_entry(evlist, counter)
+ counter->attr.write_backward = false;
+ opts->overwrite = false;
+ ui__warning("fall back to non-overwrite mode\n");
+ return 1;
}

static int perf_top__start_counters(struct perf_top *top)
@@ -888,12 +1002,33 @@ static int perf_top__start_counters(struct perf_top *top)
struct perf_evlist *evlist = top->evlist;
struct record_opts *opts = &top->record_opts;

+ if (perf_top__overwrite_check(top)) {
+ ui__error("perf top only support consistent per-event "
+ "overwrite setting for all events\n");
+ goto out_err;
+ }
+
perf_evlist__config(evlist, opts, &callchain_param);

evlist__for_each_entry(evlist, counter) {
try_again:
if (perf_evsel__open(counter, top->evlist->cpus,
top->evlist->threads) < 0) {
+
+ /*
+ * Specially handle overwrite fall back.
+ * Because perf top is the only tool which has
+ * overwrite mode by default, support
+ * both overwrite and non-overwrite mode, and
+ * require consistent mode for all events.
+ *
+ * May move it to generic code with more tools
+ * have similar attribute.
+ */
+ if (perf_missing_features.write_backward &&
+ perf_top_overwrite_fallback(top, counter))
+ goto try_again;
+
if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
if (verbose > 0)
ui__warning("%s\n", msg);
@@ -1033,7 +1168,7 @@ static int __cmd_top(struct perf_top *top)

perf_top__mmap_read(top);

- if (hits == top->samples)
+ if (opts->overwrite || (hits == top->samples))
ret = perf_evlist__poll(top->evlist, 100);

if (resize) {
@@ -1127,6 +1262,7 @@ int cmd_top(int argc, const char **argv)
.uses_mmap = true,
},
.proc_map_timeout = 500,
+ .overwrite = 1,
},
.max_stack = sysctl_perf_event_max_stack,
.sym_pcnt_filter = 5,
diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
index 51abdb0a4047..790ec25919a0 100755
--- a/tools/perf/check-headers.sh
+++ b/tools/perf/check-headers.sh
@@ -33,7 +33,6 @@ arch/s390/include/uapi/asm/kvm.h
arch/s390/include/uapi/asm/kvm_perf.h
arch/s390/include/uapi/asm/ptrace.h
arch/s390/include/uapi/asm/sie.h
-arch/s390/include/uapi/asm/unistd.h
arch/arm/include/uapi/asm/kvm.h
arch/arm64/include/uapi/asm/kvm.h
arch/alpha/include/uapi/asm/errno.h
diff --git a/tools/perf/pmu-events/arch/arm64/cortex-a53/branch.json b/tools/perf/pmu-events/arch/arm64/cortex-a53/branch.json
new file mode 100644
index 000000000000..3b6208763e50
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/cortex-a53/branch.json
@@ -0,0 +1,27 @@
+[
+ {,
+ "EventCode": "0x7A",
+ "EventName": "BR_INDIRECT_SPEC",
+ "BriefDescription": "Branch speculatively executed - Indirect branch"
+ },
+ {,
+ "EventCode": "0xC9",
+ "EventName": "BR_COND",
+ "BriefDescription": "Conditional branch executed"
+ },
+ {,
+ "EventCode": "0xCA",
+ "EventName": "BR_INDIRECT_MISPRED",
+ "BriefDescription": "Indirect branch mispredicted"
+ },
+ {,
+ "EventCode": "0xCB",
+ "EventName": "BR_INDIRECT_MISPRED_ADDR",
+ "BriefDescription": "Indirect branch mispredicted because of address miscompare"
+ },
+ {,
+ "EventCode": "0xCC",
+ "EventName": "BR_COND_MISPRED",
+ "BriefDescription": "Conditional branch mispredicted"
+ }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/cortex-a53/bus.json b/tools/perf/pmu-events/arch/arm64/cortex-a53/bus.json
new file mode 100644
index 000000000000..480d9f7460ab
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/cortex-a53/bus.json
@@ -0,0 +1,22 @@
+[
+ {,
+ "EventCode": "0x60",
+ "EventName": "BUS_ACCESS_LD",
+ "BriefDescription": "Bus access - Read"
+ },
+ {,
+ "EventCode": "0x61",
+ "EventName": "BUS_ACCESS_ST",
+ "BriefDescription": "Bus access - Write"
+ },
+ {,
+ "EventCode": "0xC0",
+ "EventName": "EXT_MEM_REQ",
+ "BriefDescription": "External memory request"
+ },
+ {,
+ "EventCode": "0xC1",
+ "EventName": "EXT_MEM_REQ_NC",
+ "BriefDescription": "Non-cacheable external memory request"
+ }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/cortex-a53/cache.json b/tools/perf/pmu-events/arch/arm64/cortex-a53/cache.json
new file mode 100644
index 000000000000..11baad6344b9
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/cortex-a53/cache.json
@@ -0,0 +1,27 @@
+[
+ {,
+ "EventCode": "0xC2",
+ "EventName": "PREFETCH_LINEFILL",
+ "BriefDescription": "Linefill because of prefetch"
+ },
+ {,
+ "EventCode": "0xC3",
+ "EventName": "PREFETCH_LINEFILL_DROP",
+ "BriefDescription": "Instruction Cache Throttle occurred"
+ },
+ {,
+ "EventCode": "0xC4",
+ "EventName": "READ_ALLOC_ENTER",
+ "BriefDescription": "Entering read allocate mode"
+ },
+ {,
+ "EventCode": "0xC5",
+ "EventName": "READ_ALLOC",
+ "BriefDescription": "Read allocate mode"
+ },
+ {,
+ "EventCode": "0xC8",
+ "EventName": "EXT_SNOOP",
+ "BriefDescription": "SCU Snooped data from another CPU for this CPU"
+ }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/cortex-a53/memory.json b/tools/perf/pmu-events/arch/arm64/cortex-a53/memory.json
new file mode 100644
index 000000000000..480d9f7460ab
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/cortex-a53/memory.json
@@ -0,0 +1,22 @@
+[
+ {,
+ "EventCode": "0x60",
+ "EventName": "BUS_ACCESS_LD",
+ "BriefDescription": "Bus access - Read"
+ },
+ {,
+ "EventCode": "0x61",
+ "EventName": "BUS_ACCESS_ST",
+ "BriefDescription": "Bus access - Write"
+ },
+ {,
+ "EventCode": "0xC0",
+ "EventName": "EXT_MEM_REQ",
+ "BriefDescription": "External memory request"
+ },
+ {,
+ "EventCode": "0xC1",
+ "EventName": "EXT_MEM_REQ_NC",
+ "BriefDescription": "Non-cacheable external memory request"
+ }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/cortex-a53/other.json b/tools/perf/pmu-events/arch/arm64/cortex-a53/other.json
new file mode 100644
index 000000000000..73a22402d003
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/cortex-a53/other.json
@@ -0,0 +1,32 @@
+[
+ {,
+ "EventCode": "0x86",
+ "EventName": "EXC_IRQ",
+ "BriefDescription": "Exception taken, IRQ"
+ },
+ {,
+ "EventCode": "0x87",
+ "EventName": "EXC_FIQ",
+ "BriefDescription": "Exception taken, FIQ"
+ },
+ {,
+ "EventCode": "0xC6",
+ "EventName": "PRE_DECODE_ERR",
+ "BriefDescription": "Pre-decode error"
+ },
+ {,
+ "EventCode": "0xD0",
+ "EventName": "L1I_CACHE_ERR",
+ "BriefDescription": "L1 Instruction Cache (data or tag) memory error"
+ },
+ {,
+ "EventCode": "0xD1",
+ "EventName": "L1D_CACHE_ERR",
+ "BriefDescription": "L1 Data Cache (data, tag or dirty) memory error, correctable or non-correctable"
+ },
+ {,
+ "EventCode": "0xD2",
+ "EventName": "TLB_ERR",
+ "BriefDescription": "TLB memory error"
+ }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/cortex-a53/pipeline.json b/tools/perf/pmu-events/arch/arm64/cortex-a53/pipeline.json
new file mode 100644
index 000000000000..3149fb90555a
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/cortex-a53/pipeline.json
@@ -0,0 +1,52 @@
+[
+ {,
+ "EventCode": "0xC7",
+ "EventName": "STALL_SB_FULL",
+ "BriefDescription": "Data Write operation that stalls the pipeline because the store buffer is full"
+ },
+ {,
+ "EventCode": "0xE0",
+ "EventName": "OTHER_IQ_DEP_STALL",
+ "BriefDescription": "Cycles that the DPU IQ is empty and that is not because of a recent micro-TLB miss, instruction cache miss or pre-decode error"
+ },
+ {,
+ "EventCode": "0xE1",
+ "EventName": "IC_DEP_STALL",
+ "BriefDescription": "Cycles the DPU IQ is empty and there is an instruction cache miss being processed"
+ },
+ {,
+ "EventCode": "0xE2",
+ "EventName": "IUTLB_DEP_STALL",
+ "BriefDescription": "Cycles the DPU IQ is empty and there is an instruction micro-TLB miss being processed"
+ },
+ {,
+ "EventCode": "0xE3",
+ "EventName": "DECODE_DEP_STALL",
+ "BriefDescription": "Cycles the DPU IQ is empty and there is a pre-decode error being processed"
+ },
+ {,
+ "EventCode": "0xE4",
+ "EventName": "OTHER_INTERLOCK_STALL",
+ "BriefDescription": "Cycles there is an interlock other than Advanced SIMD/Floating-point instructions or load/store instruction"
+ },
+ {,
+ "EventCode": "0xE5",
+ "EventName": "AGU_DEP_STALL",
+ "BriefDescription": "Cycles there is an interlock for a load/store instruction waiting for data to calculate the address in the AGU"
+ },
+ {,
+ "EventCode": "0xE6",
+ "EventName": "SIMD_DEP_STALL",
+ "BriefDescription": "Cycles there is an interlock for an Advanced SIMD/Floating-point operation."
+ },
+ {,
+ "EventCode": "0xE7",
+ "EventName": "LD_DEP_STALL",
+ "BriefDescription": "Cycles there is a stall in the Wr stage because of a load miss"
+ },
+ {,
+ "EventCode": "0xE8",
+ "EventName": "ST_DEP_STALL",
+ "BriefDescription": "Cycles there is a stall in the Wr stage because of a store"
+ }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/mapfile.csv b/tools/perf/pmu-events/arch/arm64/mapfile.csv
index 219d6756134e..e61c9ca6cf9e 100644
--- a/tools/perf/pmu-events/arch/arm64/mapfile.csv
+++ b/tools/perf/pmu-events/arch/arm64/mapfile.csv
@@ -13,3 +13,4 @@
#
#Family-model,Version,Filename,EventType
0x00000000420f5160,v1,cavium,core
+0x00000000410fd03[[:xdigit:]],v1,cortex-a53,core
diff --git a/tools/perf/tests/backward-ring-buffer.c b/tools/perf/tests/backward-ring-buffer.c
index 4035d43523c3..e0b1b414d466 100644
--- a/tools/perf/tests/backward-ring-buffer.c
+++ b/tools/perf/tests/backward-ring-buffer.c
@@ -31,10 +31,12 @@ static int count_samples(struct perf_evlist *evlist, int *sample_count,
int i;

for (i = 0; i < evlist->nr_mmaps; i++) {
+ struct perf_mmap *map = &evlist->overwrite_mmap[i];
union perf_event *event;
+ u64 start, end;

- perf_mmap__read_catchup(&evlist->overwrite_mmap[i]);
- while ((event = perf_mmap__read_backward(&evlist->overwrite_mmap[i])) != NULL) {
+ perf_mmap__read_init(map, true, &start, &end);
+ while ((event = perf_mmap__read_event(map, true, &start, end)) != NULL) {
const u32 type = event->header.type;

switch (type) {
@@ -49,6 +51,7 @@ static int count_samples(struct perf_evlist *evlist, int *sample_count,
return TEST_FAIL;
}
}
+ perf_mmap__read_done(map);
}
return TEST_OK;
}
diff --git a/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh b/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh
index 8b3da21a08f1..c446c894b297 100755
--- a/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh
+++ b/tools/perf/tests/shell/trace+probe_libc_inet_pton.sh
@@ -22,10 +22,23 @@ trace_libc_inet_pton_backtrace() {
expected[4]="rtt min.*"
expected[5]="[0-9]+\.[0-9]+[[:space:]]+probe_libc:inet_pton:$[[:xdigit:]]+$"
expected[6]=".*inet_pton[[:space:]]$$libc$$"
- expected[7]="getaddrinfo[[:space:]]$$libc$$"
- expected[8]=".*$.*/bin/ping.*$$"
-
- perf trace --no-syscalls -e probe_libc:inet_pton/max-stack=3/ ping -6 -c 1 ::1 2>&1 | grep -v ^$ | while read line ; do
+ case "$(uname -m)" in
+ s390x)
+ eventattr='call-graph=dwarf'
+ expected[7]="gaih_inet[[:space:]]$inlined$$"
+ expected[8]="__GI_getaddrinfo[[:space:]]$inlined$$"
+ expected[9]="main[[:space:]]$.*/bin/ping.*$$"
+ expected[10]="__libc_start_main[[:space:]]$$libc$$"
+ expected[11]="_start[[:space:]]$.*/bin/ping.*$$"
+ ;;
+ *)
+ eventattr='max-stack=3'
+ expected[7]="getaddrinfo[[:space:]]$$libc$$"
+ expected[8]=".*$.*/bin/ping.*$$"
+ ;;
+ esac
+
+ perf trace --no-syscalls -e probe_libc:inet_pton/$eventattr/ ping -6 -c 1 ::1 2>&1 | grep -v ^$ | while read line ; do
echo $line
echo "$line" | egrep -q "${expected[$idx]}"
if [ $? -ne 0 ] ; then
@@ -33,7 +46,7 @@ trace_libc_inet_pton_backtrace() {
exit 1
fi
let idx+=1
- [ $idx -eq 9 ] && break
+ [ -z "${expected[$idx]}" ] && break
done
}

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 68146f4620a5..6495ee55d9c3 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -608,7 +608,8 @@ static int hist_browser__title(struct hist_browser *browser, char *bf, size_t si
return browser->title ? browser->title(browser, bf, size) : 0;
}

-int hist_browser__run(struct hist_browser *browser, const char *help)
+int hist_browser__run(struct hist_browser *browser, const char *help,
+ bool warn_lost_event)
{
int key;
char title[160];
@@ -638,8 +639,9 @@ int hist_browser__run(struct hist_browser *browser, const char *help)
nr_entries = hist_browser__nr_entries(browser);
ui_browser__update_nr_entries(&browser->b, nr_entries);

- if (browser->hists->stats.nr_lost_warned !=
- browser->hists->stats.nr_events[PERF_RECORD_LOST]) {
+ if (warn_lost_event &&
+ (browser->hists->stats.nr_lost_warned !=
+ browser->hists->stats.nr_events[PERF_RECORD_LOST])) {
browser->hists->stats.nr_lost_warned =
browser->hists->stats.nr_events[PERF_RECORD_LOST];
ui_browser__warn_lost_events(&browser->b);
@@ -2763,7 +2765,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
bool left_exits,
struct hist_browser_timer *hbt,
float min_pcnt,
- struct perf_env *env)
+ struct perf_env *env,
+ bool warn_lost_event)
{
struct hists *hists = evsel__hists(evsel);
struct hist_browser *browser = perf_evsel_browser__new(evsel, hbt, env);
@@ -2844,7 +2847,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,

nr_options = 0;

- key = hist_browser__run(browser, helpline);
+ key = hist_browser__run(browser, helpline,
+ warn_lost_event);

if (browser->he_selection != NULL) {
thread = hist_browser__selected_thread(browser);
@@ -3184,7 +3188,8 @@ static void perf_evsel_menu__write(struct ui_browser *browser,

static int perf_evsel_menu__run(struct perf_evsel_menu *menu,
int nr_events, const char *help,
- struct hist_browser_timer *hbt)
+ struct hist_browser_timer *hbt,
+ bool warn_lost_event)
{
struct perf_evlist *evlist = menu->b.priv;
struct perf_evsel *pos;
@@ -3203,7 +3208,9 @@ static int perf_evsel_menu__run(struct perf_evsel_menu *menu,
case K_TIMER:
hbt->timer(hbt->arg);

- if (!menu->lost_events_warned && menu->lost_events) {
+ if (!menu->lost_events_warned &&
+ menu->lost_events &&
+ warn_lost_event) {
ui_browser__warn_lost_events(&menu->b);
menu->lost_events_warned = true;
}
@@ -3224,7 +3231,8 @@ static int perf_evsel_menu__run(struct perf_evsel_menu *menu,
key = perf_evsel__hists_browse(pos, nr_events, help,
true, hbt,
menu->min_pcnt,
- menu->env);
+ menu->env,
+ warn_lost_event);
ui_browser__show_title(&menu->b, title);
switch (key) {
case K_TAB:
@@ -3282,7 +3290,8 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
int nr_entries, const char *help,
struct hist_browser_timer *hbt,
float min_pcnt,
- struct perf_env *env)
+ struct perf_env *env,
+ bool warn_lost_event)
{
struct perf_evsel *pos;
struct perf_evsel_menu menu = {
@@ -3309,13 +3318,15 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
menu.b.width = line_len;
}

- return perf_evsel_menu__run(&menu, nr_entries, help, hbt);
+ return perf_evsel_menu__run(&menu, nr_entries, help,
+ hbt, warn_lost_event);
}

int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
struct hist_browser_timer *hbt,
float min_pcnt,
- struct perf_env *env)
+ struct perf_env *env,
+ bool warn_lost_event)
{
int nr_entries = evlist->nr_entries;

@@ -3325,7 +3336,7 @@ int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,

return perf_evsel__hists_browse(first, nr_entries, help,
false, hbt, min_pcnt,
- env);
+ env, warn_lost_event);
}

if (symbol_conf.event_group) {
@@ -3342,5 +3353,6 @@ int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
}

return __perf_evlist__tui_browse_hists(evlist, nr_entries, help,
- hbt, min_pcnt, env);
+ hbt, min_pcnt, env,
+ warn_lost_event);
}
diff --git a/tools/perf/ui/browsers/hists.h b/tools/perf/ui/browsers/hists.h
index ba431777f559..9428bee076f2 100644
--- a/tools/perf/ui/browsers/hists.h
+++ b/tools/perf/ui/browsers/hists.h
@@ -28,7 +28,8 @@ struct hist_browser {

struct hist_browser *hist_browser__new(struct hists *hists);
void hist_browser__delete(struct hist_browser *browser);
-int hist_browser__run(struct hist_browser *browser, const char *help);
+int hist_browser__run(struct hist_browser *browser, const char *help,
+ bool warn_lost_event);
void hist_browser__init(struct hist_browser *browser,
struct hists *hists);
#endif /* _PERF_UI_BROWSER_HISTS_H_ */
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index ac35cd214feb..e5fc14e53c05 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -715,28 +715,11 @@ union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist, int
return perf_mmap__read_forward(md);
}

-union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist, int idx)
-{
- struct perf_mmap *md = &evlist->mmap[idx];
-
- /*
- * No need to check messup for backward ring buffer:
- * We can always read arbitrary long data from a backward
- * ring buffer unless we forget to pause it before reading.
- */
- return perf_mmap__read_backward(md);
-}
-
union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx)
{
return perf_evlist__mmap_read_forward(evlist, idx);
}

-void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx)
-{
- perf_mmap__read_catchup(&evlist->mmap[idx]);
-}
-
void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx)
{
perf_mmap__consume(&evlist->mmap[idx], false);
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 75f8e0ad5d76..336b838e6957 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -133,10 +133,6 @@ union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx);

union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist,
int idx);
-union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist,
- int idx);
-void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx);
-
void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);

int perf_evlist__open(struct perf_evlist *evlist);
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index ff359c9ece2e..ef351688b797 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -41,17 +41,7 @@

#include "sane_ctype.h"

-static struct {
- bool sample_id_all;
- bool exclude_guest;
- bool mmap2;
- bool cloexec;
- bool clockid;
- bool clockid_wrong;
- bool lbr_flags;
- bool write_backward;
- bool group_read;
-} perf_missing_features;
+struct perf_missing_features perf_missing_features;

static clockid_t clockid;

diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 846e41644525..a7487c6d1866 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -149,6 +149,20 @@ union u64_swap {
u32 val32[2];
};

+struct perf_missing_features {
+ bool sample_id_all;
+ bool exclude_guest;
+ bool mmap2;
+ bool cloexec;
+ bool clockid;
+ bool clockid_wrong;
+ bool lbr_flags;
+ bool write_backward;
+ bool group_read;
+};
+
+extern struct perf_missing_features perf_missing_features;
+
struct cpu_map;
struct target;
struct thread_map;
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index f6630cb95eff..02721b579746 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -430,7 +430,8 @@ int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
struct hist_browser_timer *hbt,
float min_pcnt,
- struct perf_env *env);
+ struct perf_env *env,
+ bool warn_lost_event);
int script_browse(const char *script_opt);
#else
static inline
@@ -438,7 +439,8 @@ int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __maybe_unused,
const char *help __maybe_unused,
struct hist_browser_timer *hbt __maybe_unused,
float min_pcnt __maybe_unused,
- struct perf_env *env __maybe_unused)
+ struct perf_env *env __maybe_unused,
+ bool warn_lost_event __maybe_unused)
{
return 0;
}
diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
index 05076e683938..91531a7c8fbf 100644
--- a/tools/perf/util/mmap.c
+++ b/tools/perf/util/mmap.c
@@ -22,29 +22,27 @@ size_t perf_mmap__mmap_len(struct perf_mmap *map)

/* When check_messup is true, 'end' must points to a good entry */
static union perf_event *perf_mmap__read(struct perf_mmap *map,
- u64 start, u64 end, u64 *prev)
+ u64 *startp, u64 end)
{
unsigned char *data = map->base + page_size;
union perf_event *event = NULL;
- int diff = end - start;
+ int diff = end - *startp;

if (diff >= (int)sizeof(event->header)) {
size_t size;

- event = (union perf_event *)&data[start & map->mask];
+ event = (union perf_event *)&data[*startp & map->mask];
size = event->header.size;

- if (size < sizeof(event->header) || diff < (int)size) {
- event = NULL;
- goto broken_event;
- }
+ if (size < sizeof(event->header) || diff < (int)size)
+ return NULL;

/*
* Event straddles the mmap boundary -- header should always
* be inside due to u64 alignment of output.
*/
- if ((start & map->mask) + size != ((start + size) & map->mask)) {
- unsigned int offset = start;
+ if ((*startp & map->mask) + size != ((*startp + size) & map->mask)) {
+ unsigned int offset = *startp;
unsigned int len = min(sizeof(*event), size), cpy;
void *dst = map->event_copy;

@@ -59,20 +57,19 @@ static union perf_event *perf_mmap__read(struct perf_mmap *map,
event = (union perf_event *)map->event_copy;
}

- start += size;
+ *startp += size;
}

-broken_event:
- if (prev)
- *prev = start;
-
return event;
}

+/*
+ * legacy interface for mmap read.
+ * Don't use it. Use perf_mmap__read_event().
+ */
union perf_event *perf_mmap__read_forward(struct perf_mmap *map)
{
u64 head;
- u64 old = map->prev;

/*
* Check if event was unmapped due to a POLLHUP/POLLERR.
@@ -82,13 +79,26 @@ union perf_event *perf_mmap__read_forward(struct perf_mmap *map)

head = perf_mmap__read_head(map);

- return perf_mmap__read(map, old, head, &map->prev);
+ return perf_mmap__read(map, &map->prev, head);
}

-union perf_event *perf_mmap__read_backward(struct perf_mmap *map)
+/*
+ * Read event from ring buffer one by one.
+ * Return one event for each call.
+ *
+ * Usage:
+ * perf_mmap__read_init()
+ * while(event = perf_mmap__read_event()) {
+ * //process the event
+ * perf_mmap__consume()
+ * }
+ * perf_mmap__read_done()
+ */
+union perf_event *perf_mmap__read_event(struct perf_mmap *map,
+ bool overwrite,
+ u64 *startp, u64 end)
{
- u64 head, end;
- u64 start = map->prev;
+ union perf_event *event;

/*
* Check if event was unmapped due to a POLLHUP/POLLERR.
@@ -96,40 +106,19 @@ union perf_event *perf_mmap__read_backward(struct perf_mmap *map)
if (!refcount_read(&map->refcnt))
return NULL;

- head = perf_mmap__read_head(map);
- if (!head)
+ if (startp == NULL)
return NULL;

- /*
- * 'head' pointer starts from 0. Kernel minus sizeof(record) form
- * it each time when kernel writes to it, so in fact 'head' is
- * negative. 'end' pointer is made manually by adding the size of
- * the ring buffer to 'head' pointer, means the validate data can
- * read is the whole ring buffer. If 'end' is positive, the ring
- * buffer has not fully filled, so we must adjust 'end' to 0.
- *
- * However, since both 'head' and 'end' is unsigned, we can't
- * simply compare 'end' against 0. Here we compare '-head' and
- * the size of the ring buffer, where -head is the number of bytes
- * kernel write to the ring buffer.
- */
- if (-head < (u64)(map->mask + 1))
- end = 0;
- else
- end = head + map->mask + 1;
-
- return perf_mmap__read(map, start, end, &map->prev);
-}
+ /* non-overwirte doesn't pause the ringbuffer */
+ if (!overwrite)
+ end = perf_mmap__read_head(map);

-void perf_mmap__read_catchup(struct perf_mmap *map)
-{
- u64 head;
+ event = perf_mmap__read(map, startp, end);

- if (!refcount_read(&map->refcnt))
- return;
+ if (!overwrite)
+ map->prev = *startp;

- head = perf_mmap__read_head(map);
- map->prev = head;
+ return event;
}

static bool perf_mmap__empty(struct perf_mmap *map)
@@ -267,41 +256,60 @@ static int overwrite_rb_find_range(void *buf, int mask, u64 head, u64 *start, u6
return -1;
}

-int perf_mmap__push(struct perf_mmap *md, bool overwrite,
- void *to, int push(void *to, void *buf, size_t size))
+/*
+ * Report the start and end of the available data in ringbuffer
+ */
+int perf_mmap__read_init(struct perf_mmap *md, bool overwrite,
+ u64 *startp, u64 *endp)
{
u64 head = perf_mmap__read_head(md);
u64 old = md->prev;
- u64 end = head, start = old;
unsigned char *data = md->base + page_size;
unsigned long size;
- void *buf;
- int rc = 0;

- start = overwrite ? head : old;
- end = overwrite ? old : head;
+ *startp = overwrite ? head : old;
+ *endp = overwrite ? old : head;

- if (start == end)
- return 0;
+ if (*startp == *endp)
+ return -EAGAIN;

- size = end - start;
+ size = *endp - *startp;
if (size > (unsigned long)(md->mask) + 1) {
if (!overwrite) {
WARN_ONCE(1, "failed to keep up with mmap data. (warn only once)\n");

md->prev = head;
perf_mmap__consume(md, overwrite);
- return 0;
+ return -EAGAIN;
}

/*
* Backward ring buffer is full. We still have a chance to read
* most of data from it.
*/
- if (overwrite_rb_find_range(data, md->mask, head, &start, &end))
- return -1;
+ if (overwrite_rb_find_range(data, md->mask, head, startp, endp))
+ return -EINVAL;
}

+ return 0;
+}
+
+int perf_mmap__push(struct perf_mmap *md, bool overwrite,
+ void *to, int push(void *to, void *buf, size_t size))
+{
+ u64 head = perf_mmap__read_head(md);
+ u64 end, start;
+ unsigned char *data = md->base + page_size;
+ unsigned long size;
+ void *buf;
+ int rc = 0;
+
+ rc = perf_mmap__read_init(md, overwrite, &start, &end);
+ if (rc < 0)
+ return (rc == -EAGAIN) ? 0 : -1;
+
+ size = end - start;
+
if ((start & md->mask) + size != (end & md->mask)) {
buf = &data[start & md->mask];
size = md->mask + 1 - (start & md->mask);
@@ -327,3 +335,14 @@ int perf_mmap__push(struct perf_mmap *md, bool overwrite,
out:
return rc;
}
+
+/*
+ * Mandatory for overwrite mode
+ * The direction of overwrite mode is backward.
+ * The last perf_mmap__read() will set tail to map->prev.
+ * Need to correct the map->prev to head which is the end of next read.
+ */
+void perf_mmap__read_done(struct perf_mmap *map)
+{
+ map->prev = perf_mmap__read_head(map);
+}
diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h
index e43d7b55a55f..ec7d3a24e276 100644
--- a/tools/perf/util/mmap.h
+++ b/tools/perf/util/mmap.h
@@ -65,8 +65,6 @@ void perf_mmap__put(struct perf_mmap *map);

void perf_mmap__consume(struct perf_mmap *map, bool overwrite);

-void perf_mmap__read_catchup(struct perf_mmap *md);
-
static inline u64 perf_mmap__read_head(struct perf_mmap *mm)
{
struct perf_event_mmap_page *pc = mm->base;
@@ -87,11 +85,17 @@ static inline void perf_mmap__write_tail(struct perf_mmap *md, u64 tail)
}

union perf_event *perf_mmap__read_forward(struct perf_mmap *map);
-union perf_event *perf_mmap__read_backward(struct perf_mmap *map);
+
+union perf_event *perf_mmap__read_event(struct perf_mmap *map,
+ bool overwrite,
+ u64 *startp, u64 end);

int perf_mmap__push(struct perf_mmap *md, bool backward,
void *to, int push(void *to, void *buf, size_t size));

size_t perf_mmap__mmap_len(struct perf_mmap *map);

+int perf_mmap__read_init(struct perf_mmap *md, bool overwrite,
+ u64 *startp, u64 *endp);
+void perf_mmap__read_done(struct perf_mmap *map);
#endif /*__PERF_MMAP_H */
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 443892dabedb..1019bbc5dbd8 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -340,35 +340,15 @@ size_t hex_width(u64 v)
return n;
}

-static int hex(char ch)
-{
- if ((ch >= '0') && (ch <= '9'))
- return ch - '0';
- if ((ch >= 'a') && (ch <= 'f'))
- return ch - 'a' + 10;
- if ((ch >= 'A') && (ch <= 'F'))
- return ch - 'A' + 10;
- return -1;
-}
-
/*
* While we find nice hex chars, build a long_val.
* Return number of chars processed.
*/
int hex2u64(const char *ptr, u64 *long_val)
{
- const char *p = ptr;
- *long_val = 0;
-
- while (*p) {
- const int hex_val = hex(*p);
+ char *p;

- if (hex_val < 0)
- break;
-
- *long_val = (*long_val << 4) | hex_val;
- p++;
- }
+ *long_val = strtoull(ptr, &p, 16);

return p - ptr;
}

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