From: Arnaldo Carvalho de Melo <[email protected]> If debugfs was already mounted, then its a matter of not finding the tracepoint, tell the user that perhaps a CONFIG_ setting is not enabled.
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]> --- tools/lib/api/fs/debugfs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index bf9e21648894..d2b18e887071 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -106,6 +106,13 @@ int debugfs__strerror_open(int err, char *buf, size_t size, const char *filename 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" -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
