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tools lib api fs: Add tracefs into fs.c object 

Adding tracefs support into fs.c framework. It'll replace the tracefs
object functionality in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
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/1441180605-24737-11-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 09:56:40 +02:00 committed by Arnaldo Carvalho de Melo
parent 8ccfabdb87
commit c495afb498
2 changed files with 29 additions and 0 deletions
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28
tools/lib/api/fs/fs.c
View File

@ -28,6 +28,10 @@
#define DEBUGFS_MAGIC 0x64626720 #define DEBUGFS_MAGIC 0x64626720
#endif #endif
#ifndef TRACEFS_MAGIC
#define TRACEFS_MAGIC 0x74726163
#endif
static const char * const sysfs__fs_known_mountpoints[] = { static const char * const sysfs__fs_known_mountpoints[] = {
"/sys", "/sys",
0, 0,
@ -48,6 +52,19 @@ static const char * const debugfs__known_mountpoints[] = {
0, 0,
}; };
#ifndef TRACEFS_DEFAULT_PATH
#define TRACEFS_DEFAULT_PATH "/sys/kernel/tracing"
#endif
static const char * const tracefs__known_mountpoints[] = {
TRACEFS_DEFAULT_PATH,
"/sys/kernel/debug/tracing",
"/tracing",
"/trace",
0,
};
struct fs { struct fs {
const char *name; const char *name;
const char * const *mounts; const char * const *mounts;
@ -60,8 +77,13 @@ enum {
FS__SYSFS = 0, FS__SYSFS = 0,
FS__PROCFS = 1, FS__PROCFS = 1,
FS__DEBUGFS = 2, FS__DEBUGFS = 2,
FS__TRACEFS = 3,
}; };
#ifndef TRACEFS_MAGIC
#define TRACEFS_MAGIC 0x74726163
#endif
static struct fs fs__entries[] = { static struct fs fs__entries[] = {
[FS__SYSFS] = { [FS__SYSFS] = {
.name = "sysfs", .name = "sysfs",
@ -78,6 +100,11 @@ static struct fs fs__entries[] = {
.mounts = debugfs__known_mountpoints, .mounts = debugfs__known_mountpoints,
.magic = DEBUGFS_MAGIC, .magic = DEBUGFS_MAGIC,
}, },
[FS__TRACEFS] = {
.name = "tracefs",
.mounts = tracefs__known_mountpoints,
.magic = TRACEFS_MAGIC,
},
}; };
static bool fs__read_mounts(struct fs *fs) static bool fs__read_mounts(struct fs *fs)
@ -197,6 +224,7 @@ const char *name##__mountpoint(void) \
FS__MOUNTPOINT(sysfs, FS__SYSFS); FS__MOUNTPOINT(sysfs, FS__SYSFS);
FS__MOUNTPOINT(procfs, FS__PROCFS); FS__MOUNTPOINT(procfs, FS__PROCFS);
FS__MOUNTPOINT(debugfs, FS__DEBUGFS); FS__MOUNTPOINT(debugfs, FS__DEBUGFS);
FS__MOUNTPOINT(tracefs, FS__TRACEFS);
int filename__read_int(const char *filename, int *value) int filename__read_int(const char *filename, int *value)
{ {

1
tools/lib/api/fs/fs.h
View File

@ -12,6 +12,7 @@
const char *sysfs__mountpoint(void); const char *sysfs__mountpoint(void);
const char *procfs__mountpoint(void); const char *procfs__mountpoint(void);
const char *debugfs__mountpoint(void); const char *debugfs__mountpoint(void);
const char *tracefs__mountpoint(void);
int filename__read_int(const char *filename, int *value); int filename__read_int(const char *filename, int *value);
int sysctl__read_int(const char *sysctl, int *value); int sysctl__read_int(const char *sysctl, int *value);