* [cgroup:for-4.15 8/8] kernel/cgroup/cgroup.c:3360: warning: unused variable 'cgrp'
@ 2017-10-26 22:01 kbuild test robot
[not found] ` <201710270642.JXcfWPVR%fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: kbuild test robot @ 2017-10-26 22:01 UTC (permalink / raw)
To: Tejun Heo; +Cc: kbuild-all-JC7UmRfGjtg, cgroups-u79uwXL29TY76Z2rM5mHXA
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-4.15
head: d41bf8c9deaed1a90b18d3ffc5639d4c19f0259a
commit: d41bf8c9deaed1a90b18d3ffc5639d4c19f0259a [8/8] cgroup, sched: Move basic cpu stats from cgroup.stat to cpu.stat
config: x86_64-randconfig-a0-10270506 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
git checkout d41bf8c9deaed1a90b18d3ffc5639d4c19f0259a
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
kernel/cgroup/cgroup.c: In function 'cpu_stat_show':
>> kernel/cgroup/cgroup.c:3360: warning: unused variable 'cgrp'
vim +/cgrp +3360 kernel/cgroup/cgroup.c
3357
3358 static int cpu_stat_show(struct seq_file *seq, void *v)
3359 {
> 3360 struct cgroup *cgrp = seq_css(seq)->cgroup;
3361 int ret = 0;
3362
3363 cgroup_stat_show_cputime(seq);
3364 #ifdef CONFIG_CGROUP_SCHED
3365 ret = cgroup_extra_stat_show(seq, cgrp, cpu_cgrp_id);
3366 #endif
3367 return ret;
3368 }
3369
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH cgroup/for-4.15] cgroup: mark @cgrp __maybe_unused in cpu_stat_show()
[not found] ` <201710270642.JXcfWPVR%fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
@ 2017-10-30 15:16 ` Tejun Heo
0 siblings, 0 replies; 2+ messages in thread
From: Tejun Heo @ 2017-10-30 15:16 UTC (permalink / raw)
To: kbuild test robot; +Cc: kbuild-all-JC7UmRfGjtg, cgroups-u79uwXL29TY76Z2rM5mHXA
From c3ba13298709f46e72b22d087d0aa02bd012e4b0 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Date: Mon, 30 Oct 2017 08:13:14 -0700
The local variable @cgrp isn't used if !CONFIG_CGROUP_SCHED. Mark the
variable with __maybe_unused to avoid a compile warning.
Reported-by: "kbuild-all-JC7UmRfGjtg@public.gmane.org" <kbuild-all-JC7UmRfGjtg@public.gmane.org>
Signed-off-by: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
Applied to cgroup/for-4.15.
Thanks.
kernel/cgroup/cgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index d9773e4..d6ed725 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -3357,7 +3357,7 @@ static int __maybe_unused cgroup_extra_stat_show(struct seq_file *seq,
static int cpu_stat_show(struct seq_file *seq, void *v)
{
- struct cgroup *cgrp = seq_css(seq)->cgroup;
+ struct cgroup __maybe_unused *cgrp = seq_css(seq)->cgroup;
int ret = 0;
cgroup_stat_show_cputime(seq);
--
2.9.5
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2017-10-26 22:01 [cgroup:for-4.15 8/8] kernel/cgroup/cgroup.c:3360: warning: unused variable 'cgrp' kbuild test robot
[not found] ` <201710270642.JXcfWPVR%fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-10-30 15:16 ` [PATCH cgroup/for-4.15] cgroup: mark @cgrp __maybe_unused in cpu_stat_show() Tejun Heo
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