Messages in this thread | | | From | Yafang Shao <> | Date | Mon, 20 Sep 2021 14:55:29 +0800 | Subject | Re: linux-next: build warning after merge of the tip tree |
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On Mon, Sep 20, 2021 at 9:33 AM Stephen Rothwell <sfr@canb.auug.org.au> wrote: > > Hi all, > > After merging the tip tree, today's linux-next build (powerpc_ppc64 > defconfig) produced this warning: > > kernel/sched/debug.c: In function 'print_cfs_group_stats': > kernel/sched/debug.c:460:41: warning: unused variable 'stats' [-Wunused-variable] > 460 | struct sched_statistics *stats = __schedstats_from_se(se); > | ^~~~~ > > Caused by commit > > cb3e971c435d ("sched: Make struct sched_statistics independent of fair sched class") > > # CONFIG_SCHEDSTATS is not set >
Hi Stephen,
Thanks for the report.
We have discussed this issue before[1]. This warning happens when CONFIG_SCHEDSTATS is not set and schedstat_enabled() is 0, so the whole scope should be not compiled. It seems that we don't need to fix this warning.
[1]. https://lore.kernel.org/lkml/20210911082505.115758-1-laoar.shao@gmail.com/
-- Thanks Yafang
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