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perf util: Move debugfs/tracing helper functions to util.c

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Since they're generic helpers move them to util.c so that they can be
used by others.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1372230862-15861-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2013-06-26 16:14:04 +09:00 committed by Arnaldo Carvalho de Melo
parent fa1531fdd7
commit 167aedc44e
3 changed files with 62 additions and 59 deletions
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59
tools/perf/util/trace-event-info.c
View File

@ -46,65 +46,6 @@
static int output_fd;
static const char *find_debugfs(void)
{
const char *path = perf_debugfs_mount(NULL);
if (!path)
pr_debug("Your kernel does not support the debugfs filesystem");
return path;
}
/*
* Finds the path to the debugfs/tracing
* Allocates the string and stores it.
*/
static const char *find_tracing_dir(void)
{
static char *tracing;
static int tracing_found;
const char *debugfs;
if (tracing_found)
return tracing;
debugfs = find_debugfs();
if (!debugfs)
return NULL;
tracing = malloc(strlen(debugfs) + 9);
if (!tracing)
return NULL;
sprintf(tracing, "%s/tracing", debugfs);
tracing_found = 1;
return tracing;
}
static char *get_tracing_file(const char *name)
{
const char *tracing;
char *file;
tracing = find_tracing_dir();
if (!tracing)
return NULL;
file = malloc(strlen(tracing) + strlen(name) + 2);
if (!file)
return NULL;
sprintf(file, "%s/%s", tracing, name);
return file;
}
static void put_tracing_file(char *file)
{
free(file);
}
int bigendian(void)
{
unsigned char str[] = { 0x1, 0x2, 0x3, 0x4, 0x0, 0x0, 0x0, 0x0};

59
tools/perf/util/util.c
View File

@ -269,3 +269,62 @@ void perf_debugfs_set_path(const char *mntpt)
snprintf(debugfs_mountpoint, strlen(debugfs_mountpoint), "%s", mntpt);
set_tracing_events_path(mntpt);
}
static const char *find_debugfs(void)
{
const char *path = perf_debugfs_mount(NULL);
if (!path)
fprintf(stderr, "Your kernel does not support the debugfs filesystem");
return path;
}
/*
* Finds the path to the debugfs/tracing
* Allocates the string and stores it.
*/
const char *find_tracing_dir(void)
{
static char *tracing;
static int tracing_found;
const char *debugfs;
if (tracing_found)
return tracing;
debugfs = find_debugfs();
if (!debugfs)
return NULL;
tracing = malloc(strlen(debugfs) + 9);
if (!tracing)
return NULL;
sprintf(tracing, "%s/tracing", debugfs);
tracing_found = 1;
return tracing;
}
char *get_tracing_file(const char *name)
{
const char *tracing;
char *file;
tracing = find_tracing_dir();
if (!tracing)
return NULL;
file = malloc(strlen(tracing) + strlen(name) + 2);
if (!file)
return NULL;
sprintf(file, "%s/%s", tracing, name);
return file;
}
void put_tracing_file(char *file)
{
free(file);
}

3
tools/perf/util/util.h
View File

@ -80,6 +80,9 @@ extern char buildid_dir[];
extern char tracing_events_path[];
extern void perf_debugfs_set_path(const char *mountpoint);
const char *perf_debugfs_mount(const char *mountpoint);
const char *find_tracing_dir(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).