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From: tip-bot f. M. H. <mhi...@re...> - 2009-12-17 10:53:26
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Commit-ID: 96c96612e952f63cc0055db9df7d8b5b1ada02be Gitweb: http://git.kernel.org/tip/96c96612e952f63cc0055db9df7d8b5b1ada02be Author: Masami Hiramatsu <mhi...@re...> AuthorDate: Wed, 16 Dec 2009 17:24:00 -0500 Committer: Ingo Molnar <mi...@el...> CommitDate: Thu, 17 Dec 2009 09:42:43 +0100 perf probe: Check whether debugfs path is correct Check whether the debugfs path is correct before executing a command, because perf-probe depends on debugfs. Signed-off-by: Masami Hiramatsu <mhi...@re...> Cc: Frederic Weisbecker <fwe...@gm...> Cc: Paul Mackerras <pa...@sa...> Cc: Arnaldo Carvalho de Melo <ac...@re...> Cc: Steven Rostedt <ro...@go...> Cc: Jim Keniston <jke...@us...> Cc: Ananth N Mavinakayanahalli <an...@in...> Cc: Christoph Hellwig <hc...@in...> Cc: Jason Baron <jb...@re...> Cc: K.Prasad <pr...@li...> Cc: Peter Zijlstra <pe...@in...> Cc: Srikar Dronamraju <sr...@li...> Cc: systemtap <sys...@so...> Cc: DLE <dle...@li...> LKML-Reference: <200...@dh...> Signed-off-by: Ingo Molnar <mi...@el...> --- tools/perf/builtin-probe.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 7e741f5..c1e6774 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -38,6 +38,7 @@ #include "util/strlist.h" #include "util/event.h" #include "util/debug.h" +#include "util/debugfs.h" #include "util/symbol.h" #include "util/thread.h" #include "util/session.h" @@ -205,6 +206,9 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) if ((!session.nr_probe && !session.dellist && !session.list_events)) usage_with_options(probe_usage, options); + if (debugfs_valid_mountpoint(debugfs_path) < 0) + die("Failed to find debugfs path."); + if (session.list_events) { if (session.nr_probe != 0 || session.dellist) { pr_warning(" Error: Don't use --list with" |