Re: [PATCH 2/4] perf kvm: Move arch specific code into arch/
From: Christian Borntraeger
Date: Mon Jul 07 2014 - 10:09:41 EST
On 03/07/14 16:29, Alexander Yarygin wrote:
> Parts of a 'perf kvm stat' code make sense only for x86.
> Let's move this code into the arch/x86/kvm-stat.c file and add
> util/kvm-stat.h for generic structure definitions.
>
> Add a global array 'kvm_reg_events_ops' for accessing the
> arch-specific 'kvm_events_ops' from generic code.
>
> Since the several global arrays (i.e. 'kvm_events_tp') have been moved
> to arch/*, we can not know their sizes and use them directly in
> builtin-kvm.c. This patch fixes that problem by adding trimming
> NULL element to each array and changing the behavior of their handlers
> in generic code.
>
> Signed-off-by: Alexander Yarygin <yarygin@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
Acked-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Would be good if Paolo and David could ack the KVM/perf parts.
Then this should also go into next merge window.
> ---
> tools/perf/Makefile.perf | 1 +
> tools/perf/arch/x86/Makefile | 1 +
> tools/perf/arch/x86/util/kvm-stat.c | 151 ++++++++++++++++++
> tools/perf/builtin-kvm.c | 297 ++++-------------------------------
> tools/perf/util/kvm-stat.h | 130 +++++++++++++++
> 5 files changed, 317 insertions(+), 263 deletions(-)
> create mode 100644 tools/perf/arch/x86/util/kvm-stat.c
> create mode 100644 tools/perf/util/kvm-stat.h
>
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index ae20edf..f1a590f 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -300,6 +300,7 @@ LIB_H += ui/progress.h
> LIB_H += ui/util.h
> LIB_H += ui/ui.h
> LIB_H += util/data.h
> +LIB_H += util/kvm-stat.h
>
> LIB_OBJS += $(OUTPUT)util/abspath.o
> LIB_OBJS += $(OUTPUT)util/alias.o
> diff --git a/tools/perf/arch/x86/Makefile b/tools/perf/arch/x86/Makefile
> index d393901..9b21881 100644
> --- a/tools/perf/arch/x86/Makefile
> +++ b/tools/perf/arch/x86/Makefile
> @@ -16,3 +16,4 @@ LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o
> LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/tsc.o
> LIB_H += arch/$(ARCH)/util/tsc.h
> HAVE_KVM_STAT_SUPPORT := 1
> +LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/kvm-stat.o
> diff --git a/tools/perf/arch/x86/util/kvm-stat.c b/tools/perf/arch/x86/util/kvm-stat.c
> new file mode 100644
> index 0000000..2f8d2c1
> --- /dev/null
> +++ b/tools/perf/arch/x86/util/kvm-stat.c
> @@ -0,0 +1,151 @@
> +#include "../../util/kvm-stat.h"
> +#include <asm/kvm_perf.h>
> +
> +define_exit_reasons_table(vmx_exit_reasons, VMX_EXIT_REASONS);
> +define_exit_reasons_table(svm_exit_reasons, SVM_EXIT_REASONS);
> +
> +static struct kvm_events_ops exit_events = {
> + .is_begin_event = exit_event_begin,
> + .is_end_event = exit_event_end,
> + .decode_key = exit_event_decode_key,
> + .name = "VM-EXIT"
> +};
> +
> +/*
> + * For the mmio events, we treat:
> + * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry
> + * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...).
> + */
> +static void mmio_event_get_key(struct perf_evsel *evsel, struct perf_sample *sample,
> + struct event_key *key)
> +{
> + key->key = perf_evsel__intval(evsel, sample, "gpa");
> + key->info = perf_evsel__intval(evsel, sample, "type");
> +}
> +
> +#define KVM_TRACE_MMIO_READ_UNSATISFIED 0
> +#define KVM_TRACE_MMIO_READ 1
> +#define KVM_TRACE_MMIO_WRITE 2
> +
> +static bool mmio_event_begin(struct perf_evsel *evsel,
> + struct perf_sample *sample, struct event_key *key)
> +{
> + /* MMIO read begin event in kernel. */
> + if (kvm_exit_event(evsel))
> + return true;
> +
> + /* MMIO write begin event in kernel. */
> + if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
> + perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) {
> + mmio_event_get_key(evsel, sample, key);
> + return true;
> + }
> +
> + return false;
> +}
> +
> +static bool mmio_event_end(struct perf_evsel *evsel, struct perf_sample *sample,
> + struct event_key *key)
> +{
> + /* MMIO write end event in kernel. */
> + if (kvm_entry_event(evsel))
> + return true;
> +
> + /* MMIO read end event in kernel.*/
> + if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
> + perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) {
> + mmio_event_get_key(evsel, sample, key);
> + return true;
> + }
> +
> + return false;
> +}
> +
> +static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
> + struct event_key *key,
> + char *decode)
> +{
> + scnprintf(decode, DECODE_STR_LEN, "%#lx:%s",
> + (unsigned long)key->key,
> + key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R");
> +}
> +
> +static struct kvm_events_ops mmio_events = {
> + .is_begin_event = mmio_event_begin,
> + .is_end_event = mmio_event_end,
> + .decode_key = mmio_event_decode_key,
> + .name = "MMIO Access"
> +};
> +
> + /* The time of emulation pio access is from kvm_pio to kvm_entry. */
> +static void ioport_event_get_key(struct perf_evsel *evsel,
> + struct perf_sample *sample,
> + struct event_key *key)
> +{
> + key->key = perf_evsel__intval(evsel, sample, "port");
> + key->info = perf_evsel__intval(evsel, sample, "rw");
> +}
> +
> +static bool ioport_event_begin(struct perf_evsel *evsel,
> + struct perf_sample *sample,
> + struct event_key *key)
> +{
> + if (!strcmp(evsel->name, "kvm:kvm_pio")) {
> + ioport_event_get_key(evsel, sample, key);
> + return true;
> + }
> +
> + return false;
> +}
> +
> +static bool ioport_event_end(struct perf_evsel *evsel,
> + struct perf_sample *sample __maybe_unused,
> + struct event_key *key __maybe_unused)
> +{
> + return kvm_entry_event(evsel);
> +}
> +
> +static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
> + struct event_key *key,
> + char *decode)
> +{
> + scnprintf(decode, DECODE_STR_LEN, "%#llx:%s",
> + (unsigned long long)key->key,
> + key->info ? "POUT" : "PIN");
> +}
> +
> +static struct kvm_events_ops ioport_events = {
> + .is_begin_event = ioport_event_begin,
> + .is_end_event = ioport_event_end,
> + .decode_key = ioport_event_decode_key,
> + .name = "IO Port Access"
> +};
> +
> +const char * const kvm_events_tp[] = {
> + "kvm:kvm_entry",
> + "kvm:kvm_exit",
> + "kvm:kvm_mmio",
> + "kvm:kvm_pio",
> + NULL,
> +};
> +
> +struct kvm_reg_events_ops kvm_reg_events_ops[] = {
> + { .name = "vmexit", .ops = &exit_events },
> + { .name = "mmio", .ops = &mmio_events },
> + { .name = "ioport", .ops = &ioport_events },
> + { NULL, NULL },
> +};
> +
> +int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
> +{
> + if (strstr(cpuid, "Intel")) {
> + kvm->exit_reasons = vmx_exit_reasons;
> + kvm->exit_reasons_isa = "VMX";
> + } else if (strstr(cpuid, "AMD")) {
> + kvm->exit_reasons = svm_exit_reasons;
> + kvm->exit_reasons_isa = "SVM";
> + } else
> + return -ENOTSUP;
> +
> + return 0;
> +}
> diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
> index 6d73346..75ee8c1 100644
> --- a/tools/perf/builtin-kvm.c
> +++ b/tools/perf/builtin-kvm.c
> @@ -31,109 +31,23 @@
>
> #ifdef HAVE_KVM_STAT_SUPPORT
> #include <asm/kvm_perf.h>
> +#include "util/kvm-stat.h"
>
> -struct event_key {
> - #define INVALID_KEY (~0ULL)
> - u64 key;
> - int info;
> -};
> -
> -struct kvm_event_stats {
> - u64 time;
> - struct stats stats;
> -};
> -
> -struct kvm_event {
> - struct list_head hash_entry;
> - struct rb_node rb;
> -
> - struct event_key key;
> -
> - struct kvm_event_stats total;
> -
> - #define DEFAULT_VCPU_NUM 8
> - int max_vcpu;
> - struct kvm_event_stats *vcpu;
> -};
> -
> -typedef int (*key_cmp_fun)(struct kvm_event*, struct kvm_event*, int);
> -
> -struct kvm_event_key {
> - const char *name;
> - key_cmp_fun key;
> -};
> -
> -
> -struct perf_kvm_stat;
> -
> -struct kvm_events_ops {
> - bool (*is_begin_event)(struct perf_evsel *evsel,
> - struct perf_sample *sample,
> - struct event_key *key);
> - bool (*is_end_event)(struct perf_evsel *evsel,
> - struct perf_sample *sample, struct event_key *key);
> - void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key,
> - char *decode);
> - const char *name;
> -};
> -
> -struct exit_reasons_table {
> - unsigned long exit_code;
> - const char *reason;
> -};
> -
> -#define EVENTS_BITS 12
> -#define EVENTS_CACHE_SIZE (1UL << EVENTS_BITS)
> -
> -struct perf_kvm_stat {
> - struct perf_tool tool;
> - struct record_opts opts;
> - struct perf_evlist *evlist;
> - struct perf_session *session;
> -
> - const char *file_name;
> - const char *report_event;
> - const char *sort_key;
> - int trace_vcpu;
> -
> - struct exit_reasons_table *exit_reasons;
> - const char *exit_reasons_isa;
> -
> - struct kvm_events_ops *events_ops;
> - key_cmp_fun compare;
> - struct list_head kvm_events_cache[EVENTS_CACHE_SIZE];
> -
> - u64 total_time;
> - u64 total_count;
> - u64 lost_events;
> - u64 duration;
> -
> - const char *pid_str;
> - struct intlist *pid_list;
> -
> - struct rb_root result;
> -
> - int timerfd;
> - unsigned int display_time;
> - bool live;
> -};
> -
> -
> -static void exit_event_get_key(struct perf_evsel *evsel,
> - struct perf_sample *sample,
> - struct event_key *key)
> +void exit_event_get_key(struct perf_evsel *evsel,
> + struct perf_sample *sample,
> + struct event_key *key)
> {
> key->info = 0;
> key->key = perf_evsel__intval(evsel, sample, KVM_EXIT_REASON);
> }
>
> -static bool kvm_exit_event(struct perf_evsel *evsel)
> +bool kvm_exit_event(struct perf_evsel *evsel)
> {
> return !strcmp(evsel->name, KVM_EXIT_TRACE);
> }
>
> -static bool exit_event_begin(struct perf_evsel *evsel,
> - struct perf_sample *sample, struct event_key *key)
> +bool exit_event_begin(struct perf_evsel *evsel,
> + struct perf_sample *sample, struct event_key *key)
> {
> if (kvm_exit_event(evsel)) {
> exit_event_get_key(evsel, sample, key);
> @@ -143,26 +57,18 @@ static bool exit_event_begin(struct perf_evsel *evsel,
> return false;
> }
>
> -static bool kvm_entry_event(struct perf_evsel *evsel)
> +bool kvm_entry_event(struct perf_evsel *evsel)
> {
> return !strcmp(evsel->name, KVM_ENTRY_TRACE);
> }
>
> -static bool exit_event_end(struct perf_evsel *evsel,
> - struct perf_sample *sample __maybe_unused,
> - struct event_key *key __maybe_unused)
> +bool exit_event_end(struct perf_evsel *evsel,
> + struct perf_sample *sample __maybe_unused,
> + struct event_key *key __maybe_unused)
> {
> return kvm_entry_event(evsel);
> }
>
> -#define define_exit_reasons_table(name, symbols) \
> - static struct exit_reasons_table name[] = { \
> - symbols, { -1, NULL } \
> - }
> -
> -define_exit_reasons_table(vmx_exit_reasons, VMX_EXIT_REASONS);
> -define_exit_reasons_table(svm_exit_reasons, SVM_EXIT_REASONS);
> -
> static const char *get_exit_reason(struct perf_kvm_stat *kvm,
> struct exit_reasons_table *tbl,
> u64 exit_code)
> @@ -178,9 +84,9 @@ static const char *get_exit_reason(struct perf_kvm_stat *kvm,
> return "UNKNOWN";
> }
>
> -static void exit_event_decode_key(struct perf_kvm_stat *kvm,
> - struct event_key *key,
> - char *decode)
> +void exit_event_decode_key(struct perf_kvm_stat *kvm,
> + struct event_key *key,
> + char *decode)
> {
> const char *exit_reason = get_exit_reason(kvm, kvm->exit_reasons,
> key->key);
> @@ -188,139 +94,20 @@ static void exit_event_decode_key(struct perf_kvm_stat *kvm,
> scnprintf(decode, DECODE_STR_LEN, "%s", exit_reason);
> }
>
> -static struct kvm_events_ops exit_events = {
> - .is_begin_event = exit_event_begin,
> - .is_end_event = exit_event_end,
> - .decode_key = exit_event_decode_key,
> - .name = "VM-EXIT"
> -};
> -
> -/*
> - * For the mmio events, we treat:
> - * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry
> - * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...).
> - */
> -static void mmio_event_get_key(struct perf_evsel *evsel, struct perf_sample *sample,
> - struct event_key *key)
> -{
> - key->key = perf_evsel__intval(evsel, sample, "gpa");
> - key->info = perf_evsel__intval(evsel, sample, "type");
> -}
> -
> -#define KVM_TRACE_MMIO_READ_UNSATISFIED 0
> -#define KVM_TRACE_MMIO_READ 1
> -#define KVM_TRACE_MMIO_WRITE 2
> -
> -static bool mmio_event_begin(struct perf_evsel *evsel,
> - struct perf_sample *sample, struct event_key *key)
> -{
> - /* MMIO read begin event in kernel. */
> - if (kvm_exit_event(evsel))
> - return true;
> -
> - /* MMIO write begin event in kernel. */
> - if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
> - perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) {
> - mmio_event_get_key(evsel, sample, key);
> - return true;
> - }
> -
> - return false;
> -}
> -
> -static bool mmio_event_end(struct perf_evsel *evsel, struct perf_sample *sample,
> - struct event_key *key)
> -{
> - /* MMIO write end event in kernel. */
> - if (kvm_entry_event(evsel))
> - return true;
> -
> - /* MMIO read end event in kernel.*/
> - if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
> - perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) {
> - mmio_event_get_key(evsel, sample, key);
> - return true;
> - }
> -
> - return false;
> -}
> -
> -static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
> - struct event_key *key,
> - char *decode)
> -{
> - scnprintf(decode, DECODE_STR_LEN, "%#lx:%s", (unsigned long)key->key,
> - key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R");
> -}
> -
> -static struct kvm_events_ops mmio_events = {
> - .is_begin_event = mmio_event_begin,
> - .is_end_event = mmio_event_end,
> - .decode_key = mmio_event_decode_key,
> - .name = "MMIO Access"
> -};
> -
> - /* The time of emulation pio access is from kvm_pio to kvm_entry. */
> -static void ioport_event_get_key(struct perf_evsel *evsel,
> - struct perf_sample *sample,
> - struct event_key *key)
> +static bool register_kvm_events_ops(struct perf_kvm_stat *kvm)
> {
> - key->key = perf_evsel__intval(evsel, sample, "port");
> - key->info = perf_evsel__intval(evsel, sample, "rw");
> -}
> + struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops;
>
> -static bool ioport_event_begin(struct perf_evsel *evsel,
> - struct perf_sample *sample,
> - struct event_key *key)
> -{
> - if (!strcmp(evsel->name, "kvm:kvm_pio")) {
> - ioport_event_get_key(evsel, sample, key);
> - return true;
> + for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) {
> + if (!strcmp(events_ops->name, kvm->report_event)) {
> + kvm->events_ops = events_ops->ops;
> + return true;
> + }
> }
>
> return false;
> }
>
> -static bool ioport_event_end(struct perf_evsel *evsel,
> - struct perf_sample *sample __maybe_unused,
> - struct event_key *key __maybe_unused)
> -{
> - return kvm_entry_event(evsel);
> -}
> -
> -static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
> - struct event_key *key,
> - char *decode)
> -{
> - scnprintf(decode, DECODE_STR_LEN, "%#llx:%s", (unsigned long long)key->key,
> - key->info ? "POUT" : "PIN");
> -}
> -
> -static struct kvm_events_ops ioport_events = {
> - .is_begin_event = ioport_event_begin,
> - .is_end_event = ioport_event_end,
> - .decode_key = ioport_event_decode_key,
> - .name = "IO Port Access"
> -};
> -
> -static bool register_kvm_events_ops(struct perf_kvm_stat *kvm)
> -{
> - bool ret = true;
> -
> - if (!strcmp(kvm->report_event, "vmexit"))
> - kvm->events_ops = &exit_events;
> - else if (!strcmp(kvm->report_event, "mmio"))
> - kvm->events_ops = &mmio_events;
> - else if (!strcmp(kvm->report_event, "ioport"))
> - kvm->events_ops = &ioport_events;
> - else {
> - pr_err("Unknown report event:%s\n", kvm->report_event);
> - ret = false;
> - }
> -
> - return ret;
> -}
> -
> struct vcpu_event_record {
> int vcpu_id;
> u64 start_time;
> @@ -833,20 +620,6 @@ static int process_sample_event(struct perf_tool *tool,
> return 0;
> }
>
> -static int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
> -{
> - if (strstr(cpuid, "Intel")) {
> - kvm->exit_reasons = vmx_exit_reasons;
> - kvm->exit_reasons_isa = "VMX";
> - } else if (strstr(cpuid, "AMD")) {
> - kvm->exit_reasons = svm_exit_reasons;
> - kvm->exit_reasons_isa = "SVM";
> - } else
> - return -ENOTSUP;
> -
> - return 0;
> -}
> -
> static int cpu_isa_config(struct perf_kvm_stat *kvm)
> {
> char buf[64], *cpuid;
> @@ -1305,13 +1078,6 @@ exit:
> return ret;
> }
>
> -static const char * const kvm_events_tp[] = {
> - "kvm:kvm_entry",
> - "kvm:kvm_exit",
> - "kvm:kvm_mmio",
> - "kvm:kvm_pio",
> -};
> -
> #define STRDUP_FAIL_EXIT(s) \
> ({ char *_p; \
> _p = strdup(s); \
> @@ -1323,7 +1089,7 @@ static const char * const kvm_events_tp[] = {
> static int
> kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv)
> {
> - unsigned int rec_argc, i, j;
> + unsigned int rec_argc, i, j, events_tp_size;
> const char **rec_argv;
> const char * const record_args[] = {
> "record",
> @@ -1331,9 +1097,14 @@ kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv)
> "-m", "1024",
> "-c", "1",
> };
> + const char * const *events_tp;
> + events_tp_size = 0;
> +
> + for (events_tp = kvm_events_tp; *events_tp; events_tp++)
> + events_tp_size++;
>
> rec_argc = ARRAY_SIZE(record_args) + argc + 2 +
> - 2 * ARRAY_SIZE(kvm_events_tp);
> + 2 * events_tp_size;
> rec_argv = calloc(rec_argc + 1, sizeof(char *));
>
> if (rec_argv == NULL)
> @@ -1342,7 +1113,7 @@ kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv)
> for (i = 0; i < ARRAY_SIZE(record_args); i++)
> rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]);
>
> - for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) {
> + for (j = 0; j < events_tp_size; j++) {
> rec_argv[i++] = "-e";
> rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]);
> }
> @@ -1396,16 +1167,16 @@ static struct perf_evlist *kvm_live_event_list(void)
> {
> struct perf_evlist *evlist;
> char *tp, *name, *sys;
> - unsigned int j;
> int err = -1;
> + const char * const *events_tp;
>
> evlist = perf_evlist__new();
> if (evlist == NULL)
> return NULL;
>
> - for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) {
> + for (events_tp = kvm_events_tp; *events_tp; events_tp++) {
>
> - tp = strdup(kvm_events_tp[j]);
> + tp = strdup(*events_tp);
> if (tp == NULL)
> goto out;
>
> @@ -1414,7 +1185,7 @@ static struct perf_evlist *kvm_live_event_list(void)
> name = strchr(tp, ':');
> if (name == NULL) {
> pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n",
> - kvm_events_tp[j]);
> + *events_tp);
> free(tp);
> goto out;
> }
> @@ -1422,7 +1193,7 @@ static struct perf_evlist *kvm_live_event_list(void)
> name++;
>
> if (perf_evlist__add_newtp(evlist, sys, name, NULL)) {
> - pr_err("Failed to add %s tracepoint to the list\n", kvm_events_tp[j]);
> + pr_err("Failed to add %s tracepoint to the list\n", *events_tp);
> free(tp);
> goto out;
> }
> diff --git a/tools/perf/util/kvm-stat.h b/tools/perf/util/kvm-stat.h
> new file mode 100644
> index 0000000..d0d9fb1
> --- /dev/null
> +++ b/tools/perf/util/kvm-stat.h
> @@ -0,0 +1,130 @@
> +#ifndef __PERF_KVM_STAT_H
> +#define __PERF_KVM_STAT_H
> +
> +#include "../perf.h"
> +#include "evsel.h"
> +#include "evlist.h"
> +#include "session.h"
> +#include "tool.h"
> +#include "stat.h"
> +
> +struct event_key {
> + #define INVALID_KEY (~0ULL)
> + u64 key;
> + int info;
> +};
> +
> +struct kvm_event_stats {
> + u64 time;
> + struct stats stats;
> +};
> +
> +struct kvm_event {
> + struct list_head hash_entry;
> + struct rb_node rb;
> +
> + struct event_key key;
> +
> + struct kvm_event_stats total;
> +
> + #define DEFAULT_VCPU_NUM 8
> + int max_vcpu;
> + struct kvm_event_stats *vcpu;
> +};
> +
> +typedef int (*key_cmp_fun)(struct kvm_event*, struct kvm_event*, int);
> +
> +struct kvm_event_key {
> + const char *name;
> + key_cmp_fun key;
> +};
> +
> +struct perf_kvm_stat;
> +
> +struct kvm_events_ops {
> + bool (*is_begin_event)(struct perf_evsel *evsel,
> + struct perf_sample *sample,
> + struct event_key *key);
> + bool (*is_end_event)(struct perf_evsel *evsel,
> + struct perf_sample *sample, struct event_key *key);
> + void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key,
> + char *decode);
> + const char *name;
> +};
> +
> +struct exit_reasons_table {
> + unsigned long exit_code;
> + const char *reason;
> +};
> +
> +#define EVENTS_BITS 12
> +#define EVENTS_CACHE_SIZE (1UL << EVENTS_BITS)
> +
> +struct perf_kvm_stat {
> + struct perf_tool tool;
> + struct record_opts opts;
> + struct perf_evlist *evlist;
> + struct perf_session *session;
> +
> + const char *file_name;
> + const char *report_event;
> + const char *sort_key;
> + int trace_vcpu;
> +
> + struct exit_reasons_table *exit_reasons;
> + const char *exit_reasons_isa;
> +
> + struct kvm_events_ops *events_ops;
> + key_cmp_fun compare;
> + struct list_head kvm_events_cache[EVENTS_CACHE_SIZE];
> +
> + u64 total_time;
> + u64 total_count;
> + u64 lost_events;
> + u64 duration;
> +
> + const char *pid_str;
> + struct intlist *pid_list;
> +
> + struct rb_root result;
> +
> + int timerfd;
> + unsigned int display_time;
> + bool live;
> +};
> +
> +struct kvm_reg_events_ops {
> + const char *name;
> + struct kvm_events_ops *ops;
> +};
> +
> +void exit_event_get_key(struct perf_evsel *evsel,
> + struct perf_sample *sample,
> + struct event_key *key);
> +bool exit_event_begin(struct perf_evsel *evsel,
> + struct perf_sample *sample,
> + struct event_key *key);
> +bool exit_event_end(struct perf_evsel *evsel,
> + struct perf_sample *sample,
> + struct event_key *key);
> +void exit_event_decode_key(struct perf_kvm_stat *kvm,
> + struct event_key *key,
> + char *decode);
> +
> +bool kvm_exit_event(struct perf_evsel *evsel);
> +bool kvm_entry_event(struct perf_evsel *evsel);
> +
> +#define define_exit_reasons_table(name, symbols) \
> + static struct exit_reasons_table name[] = { \
> + symbols, { -1, NULL } \
> + }
> +
> +/*
> + * arch specific callbacks and data structures
> + */
> +int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid);
> +
> +extern const char * const kvm_events_tp[];
> +extern struct kvm_reg_events_ops kvm_reg_events_ops[];
> +
> +#endif /* __PERF_KVM_STAT_H */
>
--
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