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tools lib api fs: Move tracing_path interface into api/fs/tracing_path.c

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Moving tracing_path interface into api/fs/tracing_path.c out of util.c.
It seems generic enough to be used by others, and I couldn't think of
better place.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reviewed-by: Matt Fleming <matt.fleming@intel.com>
Reviewed-by: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-09-02 09:56:34 +02:00 committed by Arnaldo Carvalho de Melo
parent 65d4b26510
commit 592d5a6ba8
9 changed files with 101 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
tools/lib/api/fs/Build
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@ -1,4 +1,5 @@
libapi-y += fs.o
libapi-y += tracing_path.o
libapi-y += debugfs.o
libapi-y += findfs.o
libapi-y += tracefs.o

83
tools/lib/api/fs/tracing_path.c Normal file
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@ -0,0 +1,83 @@
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "debugfs.h"
#include "tracefs.h"
#include "tracing_path.h"
char tracing_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing";
char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events";
static void __tracing_path_set(const char *tracing, const char *mountpoint)
{
snprintf(tracing_path, sizeof(tracing_path), "%s/%s",
mountpoint, tracing);
snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s%s",
mountpoint, tracing, "events");
}
static const char *tracing_path_tracefs_mount(void)
{
const char *mnt;
mnt = tracefs_mount(NULL);
if (!mnt)
return NULL;
__tracing_path_set("", mnt);
return mnt;
}
static const char *tracing_path_debugfs_mount(void)
{
const char *mnt;
mnt = debugfs_mount(NULL);
if (!mnt)
return NULL;
__tracing_path_set("tracing/", mnt);
return mnt;
}
const char *tracing_path_mount(void)
{
const char *mnt;
mnt = tracing_path_tracefs_mount();
if (mnt)
return mnt;
mnt = tracing_path_debugfs_mount();
return mnt;
}
void tracing_path_set(const char *mntpt)
{
__tracing_path_set("tracing/", mntpt);
}
char *get_tracing_file(const char *name)
{
char *file;
if (asprintf(&file, "%s/%s", tracing_path, name) < 0)
return NULL;
return file;
}
void put_tracing_file(char *file)
{
free(file);
}

13
tools/lib/api/fs/tracing_path.h Normal file
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@ -0,0 +1,13 @@
#ifndef __API_FS_TRACING_PATH_H
#define __API_FS_TRACING_PATH_H
extern char tracing_path[];
extern char tracing_events_path[];
void tracing_path_set(const char *mountpoint);
const char *tracing_path_mount(void);
char *get_tracing_file(const char *name);
void put_tracing_file(char *file);
#endif /* __API_FS_TRACING_PATH_H */

2
tools/perf/perf.c
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@ -15,7 +15,7 @@
#include "util/parse-events.h"
#include "util/parse-options.h"
#include "util/debug.h"
#include <api/fs/debugfs.h>
#include <api/fs/tracing_path.h>
#include <pthread.h>
const char perf_usage_string[] =

2
tools/perf/util/parse-events.c
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@ -11,7 +11,7 @@
#include "cache.h"
#include "header.h"
#include "debug.h"
#include <api/fs/debugfs.h>
#include <api/fs/tracing_path.h>
#include "parse-events-bison.h"
#define YY_EXTRA_TYPE int
#include "parse-events-flex.h"

2
tools/perf/util/trace-event-info.c
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@ -38,7 +38,7 @@
#include "../perf.h"
#include "trace-event.h"
#include <api/fs/debugfs.h>
#include <api/fs/tracing_path.h>
#include "evsel.h"
#include "debug.h"

1
tools/perf/util/trace-event.c
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@ -8,6 +8,7 @@
#include <fcntl.h>
#include <linux/kernel.h>
#include <traceevent/event-parse.h>
#include <api/fs/tracing_path.h>
#include "trace-event.h"
#include "machine.h"
#include "util.h"

70
tools/perf/util/util.c
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@ -34,9 +34,6 @@ bool test_attr__enabled;
bool perf_host = true;
bool perf_guest = false;
char tracing_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing";
char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events";
void event_attr_init(struct perf_event_attr *attr)
{
if (!perf_host)
@ -390,73 +387,6 @@ void set_term_quiet_input(struct termios *old)
tcsetattr(0, TCSANOW, &tc);
}
static void __tracing_path_set(const char *tracing, const char *mountpoint)
{
snprintf(tracing_path, sizeof(tracing_path), "%s/%s",
mountpoint, tracing);
snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s%s",
mountpoint, tracing, "events");
}
static const char *tracing_path_tracefs_mount(void)
{
const char *mnt;
mnt = tracefs_mount(NULL);
if (!mnt)
return NULL;
__tracing_path_set("", mnt);
return mnt;
}
static const char *tracing_path_debugfs_mount(void)
{
const char *mnt;
mnt = debugfs_mount(NULL);
if (!mnt)
return NULL;
__tracing_path_set("tracing/", mnt);
return mnt;
}
const char *tracing_path_mount(void)
{
const char *mnt;
mnt = tracing_path_tracefs_mount();
if (mnt)
return mnt;
mnt = tracing_path_debugfs_mount();
return mnt;
}
void tracing_path_set(const char *mntpt)
{
__tracing_path_set("tracing/", mntpt);
}
char *get_tracing_file(const char *name)
{
char *file;
if (asprintf(&file, "%s/%s", tracing_path, name) < 0)
return NULL;
return file;
}
void put_tracing_file(char *file)
{
free(file);
}
int parse_nsec_time(const char *str, u64 *ptime)
{
u64 time_sec, time_nsec;

6
tools/perf/util/util.h
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@ -83,12 +83,6 @@
extern const char *graph_line;
extern const char *graph_dotted_line;
extern char buildid_dir[];
extern char tracing_path[];
extern char tracing_events_path[];
extern void tracing_path_set(const char *mountpoint);
const char *tracing_path_mount(void);
char *get_tracing_file(const char *name);
void put_tracing_file(char *file);
/* On most systems <limits.h> would have given us this, but
* not on some systems (e.g. GNU/Hurd).