Commit-ID: 8578b891ec38c39abd5d6376afd05fce78e2628c Gitweb: http://git.kernel.org/tip/8578b891ec38c39abd5d6376afd05fce78e2628c Author: Jiri Olsa <[email protected]> AuthorDate: Mon, 28 Jul 2014 15:58:47 +0200 Committer: Jiri Olsa <[email protected]> CommitDate: Mon, 28 Jul 2014 16:39:18 +0200
Revert "perf tools: Fix jump label always changing during tracing" This reverts commit deaff8b659cf4d34181c087b8cdf74f1eb17b02b. This commit makes CLOEXEC feature undetected for normal users, because per-cpu events are priviledged. Reported-by: Peter Zijlstra <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Jiri Olsa <[email protected]> --- tools/perf/util/cloexec.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index 6a37be5..c5d05ec 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -1,4 +1,3 @@ -#include <sched.h> #include "util.h" #include "../perf.h" #include "cloexec.h" @@ -15,13 +14,9 @@ static int perf_flag_probe(void) }; int fd; int err; - int cpu = sched_getcpu(); - - if (cpu < 0) - cpu = 0; /* check cloexec flag */ - fd = sys_perf_event_open(&attr, -1, cpu, -1, + fd = sys_perf_event_open(&attr, 0, -1, -1, PERF_FLAG_FD_CLOEXEC); err = errno; @@ -35,7 +30,7 @@ static int perf_flag_probe(void) err, strerror(err)); /* not supported, confirm error related to PERF_FLAG_FD_CLOEXEC */ - fd = sys_perf_event_open(&attr, -1, cpu, -1, 0); + fd = sys_perf_event_open(&attr, 0, -1, -1, 0); err = errno; if (WARN_ONCE(fd < 0, -- 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/
