This is a note to let you know that I've just added the patch titled
perf bench numa: Fix to show proper convergence stats
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-bench-numa-fix-to-show-proper-convergence-stats.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 2b42b09b88c831ba4da2d669581dde371c38c2af Mon Sep 17 00:00:00 2001
From: Srikar Dronamraju <[email protected]>
Date: Wed, 24 Jun 2015 16:40:04 +0530
Subject: perf bench numa: Fix to show proper convergence stats
From: Srikar Dronamraju <[email protected]>
commit 2b42b09b88c831ba4da2d669581dde371c38c2af upstream.
With commit: e1e455f4f4d3 (perf tools: Work around lack of sched_getcpu
in glibc < 2.6), perf_bench numa mem with -c or -m option is not able to
correctly calculate convergence.
With the above commit, sched_getcpu always seems to return -1. The
intention of commit e1e455f was to add a sched_getcpu in glibc < 2.6.
Hence keep the sched_getcpu definition under an ifdef.
This regression happened occurred between v4.0 and v4.1
Signed-off-by: Srikar Dronamraju <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Vinson Lee <[email protected]>
Fixes: e1e455f4f4d3 ("perf tools: Work around lack of sched_getcpu in glibc <
2.6")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
tools/perf/util/cloexec.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/tools/perf/util/cloexec.c
+++ b/tools/perf/util/cloexec.c
@@ -7,11 +7,15 @@
static unsigned long flag = PERF_FLAG_FD_CLOEXEC;
+#ifdef __GLIBC_PREREQ
+#if !__GLIBC_PREREQ(2, 6)
int __weak sched_getcpu(void)
{
errno = ENOSYS;
return -1;
}
+#endif
+#endif
static int perf_flag_probe(void)
{
Patches currently in stable-queue which might be from [email protected]
are
queue-4.1/perf-bench-numa-fix-to-show-proper-convergence-stats.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
