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tools lib fs debugfs: Introduce debugfs__strerror_open_tp

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There will be other cases where not just a tracepoint event is being
opened below the debugfs mountpoint, but it is rather common, so provide
one helper for that.

Cc: Adrian Hunter <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Don Zickus <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2015-01-22 11:13:43 -03:00
commit 2cc990ba3a
3 changed files with 18 additions and 5 deletions
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9
tools/lib/api/fs/debugfs.c
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@ -125,3 +125,12 @@ int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename
return 0;
}
int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name)
{
char path[PATH_MAX];
snprintf(path, PATH_MAX, "tracing/events/%s/%s", sys, name ?: "*");
return debugfs__strerror_open(err, buf, size, path);
}

1
tools/lib/api/fs/debugfs.h
View file

@ -27,5 +27,6 @@ char *debugfs_mount(const char *mountpoint);
extern char debugfs_mountpoint[];
int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename);
int debugfs__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name);
#endif /* __API_DEBUGFS_H__ */