[PATCH 1/3] perf tools: Add data object to handle perf data file

From: Jiri Olsa
Date: Mon Oct 07 2013 - 05:33:11 EST

This patch is adding 'struct perf_data_file' object as
a placeholder for all attributes regarding perf.data
file handling. Changing perf_session__new to take it
as an argument.

The rest of the functionality will be added later to keep
this change simple enough, because all the places using
perf_session are changed now.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
---
tools/perf/builtin-annotate.c | 9 ++++--
tools/perf/builtin-buildid-cache.c | 8 +++--
tools/perf/builtin-buildid-list.c | 9 ++++--
tools/perf/builtin-diff.c | 19 +++++++-----
tools/perf/builtin-evlist.c | 7 ++++-
tools/perf/builtin-inject.c | 7 ++++-
tools/perf/builtin-kmem.c | 7 ++++-
tools/perf/builtin-kvm.c | 13 ++++++--
tools/perf/builtin-lock.c | 7 ++++-
tools/perf/builtin-mem.c | 9 ++++--
tools/perf/builtin-record.c | 61 ++++++++++++++++++++------------------
tools/perf/builtin-report.c | 10 +++++--
tools/perf/builtin-sched.c | 6 +++-
tools/perf/builtin-script.c | 15 ++++++++--
tools/perf/builtin-timechart.c | 10 +++++--
tools/perf/builtin-top.c | 6 +++-
tools/perf/builtin-trace.c | 8 +++--
tools/perf/perf.h | 1 -
tools/perf/util/data.h | 29 ++++++++++++++++++
tools/perf/util/session.c | 12 ++++----
tools/perf/util/session.h | 6 ++--
21 files changed, 186 insertions(+), 73 deletions(-)
create mode 100644 tools/perf/util/data.h

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index ddde407..13ccea2 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -28,6 +28,7 @@
#include "util/hist.h"
#include "util/session.h"
#include "util/tool.h"
+#include "util/data.h"
#include "arch/common.h"

#include <dlfcn.h>
@@ -203,9 +204,13 @@ static int __cmd_annotate(struct perf_annotate *ann)
struct perf_session *session;
struct perf_evsel *pos;
u64 total_nr_samples;
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ .force = ann->force,
+ };

- session = perf_session__new(input_name, O_RDONLY,
- ann->force, false, &ann->tool);
+ session = perf_session__new(&file, false, &ann->tool);
if (session == NULL)
return -ENOMEM;

diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c
index c96c8fa..581c62a 100644
--- a/tools/perf/builtin-buildid-cache.c
+++ b/tools/perf/builtin-buildid-cache.c
@@ -82,8 +82,12 @@ static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)

static int build_id_cache__fprintf_missing(const char *filename, bool force, FILE *fp)
{
- struct perf_session *session = perf_session__new(filename, O_RDONLY,
- force, false, NULL);
+ struct perf_data_file file = {
+ .path = filename,
+ .mode = PERF_DATA_MODE_READ,
+ .force = force,
+ };
+ struct perf_session *session = perf_session__new(&file, false, NULL);
if (session == NULL)
return -1;

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index e74366a..0164c1c 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -15,6 +15,7 @@
#include "util/parse-options.h"
#include "util/session.h"
#include "util/symbol.h"
+#include "util/data.h"

static int sysfs__fprintf_build_id(FILE *fp)
{
@@ -52,6 +53,11 @@ static bool dso__skip_buildid(struct dso *dso, int with_hits)
static int perf_session__list_build_ids(bool force, bool with_hits)
{
struct perf_session *session;
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ .force = force,
+ };

symbol__elf_init();
/*
@@ -60,8 +66,7 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
if (filename__fprintf_build_id(input_name, stdout))
goto out;

- session = perf_session__new(input_name, O_RDONLY, force, false,
- &build_id__mark_dso_hit_ops);
+ session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops);
if (session == NULL)
return -1;
/*
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index f28799e..3fb2d46 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -16,6 +16,7 @@
#include "util/sort.h"
#include "util/symbol.h"
#include "util/util.h"
+#include "util/data.h"

#include <stdlib.h>
#include <math.h>
@@ -42,7 +43,7 @@ struct diff_hpp_fmt {

struct data__file {
struct perf_session *session;
- const char *file;
+ struct perf_data_file file;
int idx;
struct hists *hists;
struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
@@ -599,7 +600,7 @@ static void data__fprintf(void)

data__for_each_file(i, d)
fprintf(stdout, "# [%d] %s %s\n",
- d->idx, d->file,
+ d->idx, d->file.path,
!d->idx ? "(Baseline)" : "");

fprintf(stdout, "#\n");
@@ -661,17 +662,16 @@ static int __cmd_diff(void)
int ret = -EINVAL, i;

data__for_each_file(i, d) {
- d->session = perf_session__new(d->file, O_RDONLY, force,
- false, &tool);
+ d->session = perf_session__new(&d->file, false, &tool);
if (!d->session) {
- pr_err("Failed to open %s\n", d->file);
+ pr_err("Failed to open %s\n", d->file.path);
ret = -ENOMEM;
goto out_delete;
}

ret = perf_session__process_events(d->session, &tool);
if (ret) {
- pr_err("Failed to process %s\n", d->file);
+ pr_err("Failed to process %s\n", d->file.path);
goto out_delete;
}

@@ -1014,7 +1014,12 @@ static int data_init(int argc, const char **argv)
return -ENOMEM;

data__for_each_file(i, d) {
- d->file = use_default ? defaults[i] : argv[i];
+ struct perf_data_file *file = &d->file;
+
+ file->path = use_default ? defaults[i] : argv[i];
+ file->mode = PERF_DATA_MODE_READ,
+ file->force = force,
+
d->idx = i;
}

diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c
index 05bd9df..20b0f12 100644
--- a/tools/perf/builtin-evlist.c
+++ b/tools/perf/builtin-evlist.c
@@ -14,13 +14,18 @@
#include "util/parse-events.h"
#include "util/parse-options.h"
#include "util/session.h"
+#include "util/data.h"

static int __cmd_evlist(const char *file_name, struct perf_attr_details *details)
{
struct perf_session *session;
struct perf_evsel *pos;
+ struct perf_data_file file = {
+ .path = file_name,
+ .mode = PERF_DATA_MODE_READ,
+ };

- session = perf_session__new(file_name, O_RDONLY, 0, false, NULL);
+ session = perf_session__new(&file, 0, NULL);
if (session == NULL)
return -ENOMEM;

diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 423875c..646e220 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -15,6 +15,7 @@
#include "util/tool.h"
#include "util/debug.h"
#include "util/build-id.h"
+#include "util/data.h"

#include "util/parse-options.h"

@@ -347,6 +348,10 @@ static int __cmd_inject(struct perf_inject *inject)
{
struct perf_session *session;
int ret = -EINVAL;
+ struct perf_data_file file = {
+ .path = inject->input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };

signal(SIGINT, sig_handler);

@@ -357,7 +362,7 @@ static int __cmd_inject(struct perf_inject *inject)
inject->tool.tracing_data = perf_event__repipe_tracing_data;
}

- session = perf_session__new(inject->input_name, O_RDONLY, false, true, &inject->tool);
+ session = perf_session__new(&file, true, &inject->tool);
if (session == NULL)
return -ENOMEM;

diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 9b5f077..1126382 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -13,6 +13,7 @@

#include "util/parse-options.h"
#include "util/trace-event.h"
+#include "util/data.h"

#include "util/debug.h"

@@ -486,8 +487,12 @@ static int __cmd_kmem(void)
{ "kmem:kfree", perf_evsel__process_free_event, },
{ "kmem:kmem_cache_free", perf_evsel__process_free_event, },
};
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };

- session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem);
+ session = perf_session__new(&file, false, &perf_kmem);
if (session == NULL)
return -ENOMEM;

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index cfa0b79..188bb29 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -17,6 +17,7 @@
#include "util/tool.h"
#include "util/stat.h"
#include "util/top.h"
+#include "util/data.h"

#include <sys/prctl.h>
#include <sys/timerfd.h>
@@ -1215,10 +1216,13 @@ static int read_events(struct perf_kvm_stat *kvm)
.comm = perf_event__process_comm,
.ordered_samples = true,
};
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };

kvm->tool = eops;
- kvm->session = perf_session__new(kvm->file_name, O_RDONLY, 0, false,
- &kvm->tool);
+ kvm->session = perf_session__new(&file, false, &kvm->tool);
if (!kvm->session) {
pr_err("Initializing perf session failed\n");
return -EINVAL;
@@ -1450,6 +1454,9 @@ static int kvm_events_live(struct perf_kvm_stat *kvm,
"perf kvm stat live [<options>]",
NULL
};
+ struct perf_data_file file = {
+ .mode = PERF_DATA_MODE_WRITE,
+ };


/* event handling */
@@ -1514,7 +1521,7 @@ static int kvm_events_live(struct perf_kvm_stat *kvm,
/*
* perf session
*/
- kvm->session = perf_session__new(NULL, O_WRONLY, false, false, &kvm->tool);
+ kvm->session = perf_session__new(&file, false, &kvm->tool);
if (kvm->session == NULL) {
err = -ENOMEM;
goto out;
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 6a9076f..33c7253 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -15,6 +15,7 @@
#include "util/debug.h"
#include "util/session.h"
#include "util/tool.h"
+#include "util/data.h"

#include <sys/types.h>
#include <sys/prctl.h>
@@ -853,8 +854,12 @@ static int __cmd_report(bool display_info)
.comm = perf_event__process_comm,
.ordered_samples = true,
};
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };

- session = perf_session__new(input_name, O_RDONLY, 0, false, &eops);
+ session = perf_session__new(&file, false, &eops);
if (!session) {
pr_err("Initializing perf session failed\n");
return -ENOMEM;
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 253133a..31c00f1 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -5,6 +5,7 @@
#include "util/trace-event.h"
#include "util/tool.h"
#include "util/session.h"
+#include "util/data.h"

#define MEM_OPERATION_LOAD "load"
#define MEM_OPERATION_STORE "store"
@@ -119,10 +120,14 @@ static int process_sample_event(struct perf_tool *tool,

static int report_raw_events(struct perf_mem *mem)
{
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };
int err = -EINVAL;
int ret;
- struct perf_session *session = perf_session__new(input_name, O_RDONLY,
- 0, false, &mem->tool);
+ struct perf_session *session = perf_session__new(&file, false,
+ &mem->tool);

if (session == NULL)
return -ENOMEM;
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index da13840..bf8d0f1 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -24,6 +24,7 @@
#include "util/symbol.h"
#include "util/cpumap.h"
#include "util/thread_map.h"
+#include "util/data.h"

#include <unistd.h>
#include <sched.h>
@@ -65,11 +66,10 @@ struct perf_record {
struct perf_tool tool;
struct perf_record_opts opts;
u64 bytes_written;
- const char *output_name;
+ struct perf_data_file file;
struct perf_evlist *evlist;
struct perf_session *session;
const char *progname;
- int output;
int realtime_prio;
bool no_buildid;
bool no_buildid_cache;
@@ -84,8 +84,10 @@ static void advance_output(struct perf_record *rec, size_t size)

static int write_output(struct perf_record *rec, void *buf, size_t size)
{
+ struct perf_data_file *file = &rec->file;
+
while (size) {
- int ret = write(rec->output, buf, size);
+ int ret = write(file->fd, buf, size);

if (ret < 0) {
pr_err("failed to write\n");
@@ -248,13 +250,15 @@ out:

static int process_buildids(struct perf_record *rec)
{
- u64 size = lseek(rec->output, 0, SEEK_CUR);
+ struct perf_data_file *file = &rec->file;
+ struct perf_session *session = rec->session;

+ u64 size = lseek(file->fd, 0, SEEK_CUR);
if (size == 0)
return 0;

- rec->session->fd = rec->output;
- return __perf_session__process_events(rec->session, rec->post_processing_offset,
+ session->fd = file->fd;
+ return __perf_session__process_events(session, rec->post_processing_offset,
size - rec->post_processing_offset,
size, &build_id__mark_dso_hit_ops);
}
@@ -262,17 +266,18 @@ static int process_buildids(struct perf_record *rec)
static void perf_record__exit(int status, void *arg)
{
struct perf_record *rec = arg;
+ struct perf_data_file *file = &rec->file;

if (status != 0)
return;

- if (!rec->opts.pipe_output) {
+ if (!file->is_pipe) {
rec->session->header.data_size += rec->bytes_written;

if (!rec->no_buildid)
process_buildids(rec);
perf_session__write_header(rec->session, rec->evlist,
- rec->output, true);
+ file->fd, true);
perf_session__delete(rec->session);
perf_evlist__delete(rec->evlist);
symbol__exit();
@@ -342,14 +347,15 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
{
struct stat st;
int flags;
- int err, output, feat;
+ int err, feat;
unsigned long waking = 0;
const bool forks = argc > 0;
struct machine *machine;
struct perf_tool *tool = &rec->tool;
struct perf_record_opts *opts = &rec->opts;
struct perf_evlist *evsel_list = rec->evlist;
- const char *output_name = rec->output_name;
+ struct perf_data_file *file = &rec->file;
+ const char *output_name = file->path;
struct perf_session *session;
bool disabled = false;

@@ -363,13 +369,13 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)

if (!output_name) {
if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode))
- opts->pipe_output = true;
+ file->is_pipe = true;
else
- rec->output_name = output_name = "perf.data";
+ file->path = output_name = "perf.data";
}
if (output_name) {
if (!strcmp(output_name, "-"))
- opts->pipe_output = true;
+ file->is_pipe = true;
else if (!stat(output_name, &st) && st.st_size) {
char oldname[PATH_MAX];
snprintf(oldname, sizeof(oldname), "%s.old",
@@ -381,19 +387,16 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)

flags = O_CREAT|O_RDWR|O_TRUNC;

- if (opts->pipe_output)
- output = STDOUT_FILENO;
+ if (file->is_pipe)
+ file->fd = STDOUT_FILENO;
else
- output = open(output_name, flags, S_IRUSR | S_IWUSR);
- if (output < 0) {
+ file->fd = open(output_name, flags, S_IRUSR | S_IWUSR);
+ if (file->fd < 0) {
perror("failed to create output file");
return -1;
}

- rec->output = output;
-
- session = perf_session__new(output_name, O_WRONLY,
- true, false, NULL);
+ session = perf_session__new(file, false, NULL);
if (session == NULL) {
pr_err("Not enough memory for reading perf file header\n");
return -1;
@@ -415,7 +418,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)

if (forks) {
err = perf_evlist__prepare_workload(evsel_list, &opts->target,
- argv, opts->pipe_output,
+ argv, file->is_pipe,
true);
if (err < 0) {
pr_err("Couldn't run the workload!\n");
@@ -436,13 +439,13 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
*/
on_exit(perf_record__exit, rec);

- if (opts->pipe_output) {
- err = perf_header__write_pipe(output);
+ if (file->is_pipe) {
+ err = perf_header__write_pipe(file->fd);
if (err < 0)
goto out_delete_session;
} else {
err = perf_session__write_header(session, evsel_list,
- output, false);
+ file->fd, false);
if (err < 0)
goto out_delete_session;
}
@@ -455,11 +458,11 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
goto out_delete_session;
}

- rec->post_processing_offset = lseek(output, 0, SEEK_CUR);
+ rec->post_processing_offset = lseek(file->fd, 0, SEEK_CUR);

machine = &session->machines.host;

- if (opts->pipe_output) {
+ if (file->is_pipe) {
err = perf_event__synthesize_attrs(tool, session,
process_synthesized_event);
if (err < 0) {
@@ -476,7 +479,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
* return this more properly and also
* propagate errors that now are calling die()
*/
- err = perf_event__synthesize_tracing_data(tool, output, evsel_list,
+ err = perf_event__synthesize_tracing_data(tool, file->fd, evsel_list,
process_synthesized_event);
if (err <= 0) {
pr_err("Couldn't record tracing data.\n");
@@ -842,7 +845,7 @@ const struct option record_options[] = {
OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu",
"list of cpus to monitor"),
OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"),
- OPT_STRING('o', "output", &record.output_name, "file",
+ OPT_STRING('o', "output", &record.file.path, "file",
"output file name"),
OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit,
"child tasks do not inherit counters"),
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index c902229..e62f63b 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -33,6 +33,7 @@
#include "util/thread.h"
#include "util/sort.h"
#include "util/hist.h"
+#include "util/data.h"
#include "arch/common.h"

#include <dlfcn.h>
@@ -858,6 +859,9 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
"Don't show entries under that percent", parse_percent_limit),
OPT_END()
};
+ struct perf_data_file file = {
+ .mode = PERF_DATA_MODE_READ,
+ };

perf_config(perf_report_config, &report);

@@ -887,9 +891,11 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
perf_hpp__init();
}

+ file.path = input_name;
+ file.force = report.force;
+
repeat:
- session = perf_session__new(input_name, O_RDONLY,
- report.force, false, &report.tool);
+ session = perf_session__new(&file, false, &report.tool);
if (session == NULL)
return -ENOMEM;

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index d8c51b2..5a46b10 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1446,8 +1446,12 @@ static int perf_sched__read_events(struct perf_sched *sched,
{ "sched:sched_migrate_task", process_sched_migrate_task_event, },
};
struct perf_session *session;
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };

- session = perf_session__new(input_name, O_RDONLY, 0, false, &sched->tool);
+ session = perf_session__new(&file, false, &sched->tool);
if (session == NULL) {
pr_debug("No Memory for session\n");
return -1;
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 7f31a3d..05da75e 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -15,6 +15,7 @@
#include "util/evlist.h"
#include "util/evsel.h"
#include "util/sort.h"
+#include "util/data.h"
#include <linux/bitmap.h>

static char const *script_name;
@@ -1115,10 +1116,14 @@ int find_scripts(char **scripts_array, char **scripts_path_array)
char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
DIR *scripts_dir, *lang_dir;
struct perf_session *session;
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };
char *temp;
int i = 0;

- session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
+ session = perf_session__new(&file, false, NULL);
if (!session)
return -1;

@@ -1319,12 +1324,17 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
"perf script [<options>] <top-script> [script-args]",
NULL
};
+ struct perf_data_file file = {
+ .mode = PERF_DATA_MODE_READ,
+ };

setup_scripting();

argc = parse_options(argc, argv, options, script_usage,
PARSE_OPT_STOP_AT_NON_OPTION);

+ file.path = input_name;
+
if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
if (!rec_script_path)
@@ -1488,8 +1498,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
if (!script_name)
setup_pager();

- session = perf_session__new(input_name, O_RDONLY, 0, false,
- &perf_script);
+ session = perf_session__new(&file, false, &perf_script);
if (session == NULL)
return -ENOMEM;

diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index c2e0231..e11c61d 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -36,6 +36,7 @@
#include "util/session.h"
#include "util/svghelper.h"
#include "util/tool.h"
+#include "util/data.h"

#define SUPPORT_OLD_POWER_EVENTS 1
#define PWR_EVENT_EXIT -1
@@ -990,8 +991,13 @@ static int __cmd_timechart(const char *output_name)
{ "power:power_frequency", process_sample_power_frequency },
#endif
};
- struct perf_session *session = perf_session__new(input_name, O_RDONLY,
- 0, false, &perf_timechart);
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };
+
+ struct perf_session *session = perf_session__new(&file, false,
+ &perf_timechart);
int ret = -EINVAL;

if (session == NULL)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index cf4bba0..1aefdfe 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -930,11 +930,15 @@ static int __cmd_top(struct perf_top *top)
struct perf_record_opts *opts = &top->record_opts;
pthread_t thread;
int ret;
+ struct perf_data_file file = {
+ .mode = PERF_DATA_MODE_WRITE,
+ };
+
/*
* FIXME: perf_session__new should allow passing a O_MMAP, so that all this
* mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
*/
- top->session = perf_session__new(NULL, O_WRONLY, false, false, NULL);
+ top->session = perf_session__new(&file, false, NULL);
if (top->session == NULL)
return -ENOMEM;

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 1bb8f15..4e3bf72 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1636,7 +1636,10 @@ static int trace__replay(struct trace *trace)
{ "raw_syscalls:sys_enter", trace__sys_enter, },
{ "raw_syscalls:sys_exit", trace__sys_exit, },
};
-
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ };
struct perf_session *session;
int err = -1;

@@ -1659,8 +1662,7 @@ static int trace__replay(struct trace *trace)
if (symbol__init() < 0)
return -1;

- session = perf_session__new(input_name, O_RDONLY, 0, false,
- &trace->tool);
+ session = perf_session__new(&file, false, &trace->tool);
if (session == NULL)
return -ENOMEM;

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index cf20187..0914630 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -218,7 +218,6 @@ struct perf_record_opts {
bool no_delay;
bool no_inherit;
bool no_samples;
- bool pipe_output;
bool raw_samples;
bool sample_address;
bool sample_weight;
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
new file mode 100644
index 0000000..ffa0186
--- /dev/null
+++ b/tools/perf/util/data.h
@@ -0,0 +1,29 @@
+#ifndef __PERF_DATA_H
+#define __PERF_DATA_H
+
+#include <stdbool.h>
+
+enum perf_data_mode {
+ PERF_DATA_MODE_WRITE,
+ PERF_DATA_MODE_READ,
+};
+
+struct perf_data_file {
+ const char *path;
+ int fd;
+ bool is_pipe;
+ bool force;
+ enum perf_data_mode mode;
+};
+
+static inline bool perf_data_file__is_read(struct perf_data_file *file)
+{
+ return file->mode == PERF_DATA_MODE_READ;
+}
+
+static inline bool perf_data_file__is_write(struct perf_data_file *file)
+{
+ return file->mode == PERF_DATA_MODE_WRITE;
+}
+
+#endif /* __PERF_DATA_H */
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 6c1d444..6e5fad1 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -106,11 +106,11 @@ static void perf_session__destroy_kernel_maps(struct perf_session *self)
machines__destroy_kernel_maps(&self->machines);
}

-struct perf_session *perf_session__new(const char *filename, int mode,
- bool force, bool repipe,
- struct perf_tool *tool)
+struct perf_session *perf_session__new(struct perf_data_file *file,
+ bool repipe, struct perf_tool *tool)
{
struct perf_session *self;
+ const char *filename = file->path;
struct stat st;
size_t len;

@@ -134,11 +134,11 @@ struct perf_session *perf_session__new(const char *filename, int mode,
INIT_LIST_HEAD(&self->ordered_samples.to_free);
machines__init(&self->machines);

- if (mode == O_RDONLY) {
- if (perf_session__open(self, force) < 0)
+ if (perf_data_file__is_read(file)) {
+ if (perf_session__open(self, file->force) < 0)
goto out_delete;
perf_session__set_id_hdr_size(self);
- } else if (mode == O_WRONLY) {
+ } else if (perf_data_file__is_write(file)) {
/*
* In O_RDONLY mode this will be performed when reading the
* kernel MMAP event, in perf_event__process_mmap().
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 3aa75fb..1e4d813 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -7,6 +7,7 @@
#include "machine.h"
#include "symbol.h"
#include "thread.h"
+#include "data.h"
#include <linux/rbtree.h>
#include <linux/perf_event.h>

@@ -49,9 +50,8 @@ struct perf_session {

struct perf_tool;

-struct perf_session *perf_session__new(const char *filename, int mode,
- bool force, bool repipe,
- struct perf_tool *tool);
+struct perf_session *perf_session__new(struct perf_data_file *file,
+ bool repipe, struct perf_tool *tool);
void perf_session__delete(struct perf_session *session);

void perf_event_header__bswap(struct perf_event_header *self);
--
1.7.11.7

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