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Message-Id: <1440596813-12844-5-git-send-email-jolsa@kernel.org>
Date: Wed, 26 Aug 2015 15:46:46 +0200
From: Jiri Olsa <jolsa@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: lkml <linux-kernel@...r.kernel.org>,
David Ahern <dsahern@...il.com>,
Ingo Molnar <mingo@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Matt Fleming <matt@...eblueprint.co.uk>,
Raphaël Beamonte <raphael.beamonte@...il.com>
Subject: [PATCH 04/11] perf tools: Move debugfs__strerror_open into util.c object
Moving debugfs__strerror_open out of api/fs/debugfs.c,
because it's not debugfs specific. It'll be changed to
consider tracefs mount as well in following patches.
Link: http://lkml.kernel.org/n/tip-bq0f0l4r0bjvy0pjp4m759kv@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
tools/lib/api/fs/debugfs.c | 51 ---------------------------------------------
tools/lib/api/fs/debugfs.h | 3 ---
tools/perf/util/util.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++
tools/perf/util/util.h | 2 ++
4 files changed, 54 insertions(+), 54 deletions(-)
diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c
index eb7cf4d18f8a..896c3595c9df 100644
--- a/tools/lib/api/fs/debugfs.c
+++ b/tools/lib/api/fs/debugfs.c
@@ -76,54 +76,3 @@ out:
return debugfs_mountpoint;
}
-int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename)
-{
- char sbuf[128];
-
- switch (err) {
- case ENOENT:
- if (debugfs_found) {
- snprintf(buf, size,
- "Error:\tFile %s/%s not found.\n"
- "Hint:\tPerhaps this kernel misses some CONFIG_ setting to enable this feature?.\n",
- debugfs_mountpoint, filename);
- break;
- }
- snprintf(buf, size, "%s",
- "Error:\tUnable to find debugfs\n"
- "Hint:\tWas your kernel compiled with debugfs support?\n"
- "Hint:\tIs the debugfs filesystem mounted?\n"
- "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'");
- break;
- case EACCES: {
- const char *mountpoint = debugfs_mountpoint;
-
- if (!access(debugfs_mountpoint, R_OK) && strncmp(filename, "tracing/", 8) == 0) {
- const char *tracefs_mntpoint = tracefs_find_mountpoint();
-
- if (tracefs_mntpoint)
- mountpoint = tracefs_mntpoint;
- }
-
- snprintf(buf, size,
- "Error:\tNo permissions to read %s/%s\n"
- "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n",
- debugfs_mountpoint, filename, mountpoint);
- }
- break;
- default:
- snprintf(buf, size, "%s", strerror_r(err, sbuf, sizeof(sbuf)));
- break;
- }
-
- 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);
-}
diff --git a/tools/lib/api/fs/debugfs.h b/tools/lib/api/fs/debugfs.h
index 455023698d2b..19a618e9dbc1 100644
--- a/tools/lib/api/fs/debugfs.h
+++ b/tools/lib/api/fs/debugfs.h
@@ -17,7 +17,4 @@ 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__ */
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 7acafb3c5592..03d1d74a5ede 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -442,6 +442,58 @@ void perf_debugfs_set_path(const char *mntpt)
set_tracing_events_path("tracing/", mntpt);
}
+int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename)
+{
+ char sbuf[128];
+
+ switch (err) {
+ case ENOENT:
+ if (debugfs_configured()) {
+ snprintf(buf, size,
+ "Error:\tFile %s/%s not found.\n"
+ "Hint:\tPerhaps this kernel misses some CONFIG_ setting to enable this feature?.\n",
+ debugfs_mountpoint, filename);
+ break;
+ }
+ snprintf(buf, size, "%s",
+ "Error:\tUnable to find debugfs\n"
+ "Hint:\tWas your kernel compiled with debugfs support?\n"
+ "Hint:\tIs the debugfs filesystem mounted?\n"
+ "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'");
+ break;
+ case EACCES: {
+ const char *mountpoint = debugfs_mountpoint;
+
+ if (!access(debugfs_mountpoint, R_OK) && strncmp(filename, "tracing/", 8) == 0) {
+ const char *tracefs_mntpoint = tracefs_find_mountpoint();
+
+ if (tracefs_mntpoint)
+ mountpoint = tracefs_mntpoint;
+ }
+
+ snprintf(buf, size,
+ "Error:\tNo permissions to read %s/%s\n"
+ "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n",
+ debugfs_mountpoint, filename, mountpoint);
+ }
+ break;
+ default:
+ snprintf(buf, size, "%s", strerror_r(err, sbuf, sizeof(sbuf)));
+ break;
+ }
+
+ 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);
+}
+
char *get_tracing_file(const char *name)
{
char *file;
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 291be1d84bc3..da48c00ab0db 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -87,6 +87,8 @@ extern char tracing_path[];
extern char tracing_events_path[];
extern void perf_debugfs_set_path(const char *mountpoint);
const char *perf_debugfs_mount(const char *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);
char *get_tracing_file(const char *name);
void put_tracing_file(char *file);
--
2.4.3
--
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