Messages in this thread | | | From | Linus Torvalds <> | Date | Thu, 27 Oct 2016 15:48:37 -0700 | Subject | Re: linux-next: build warning in Linus' tree |
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On Thu, Oct 27, 2016 at 3:29 PM, Stephen Rothwell <sfr@canb.auug.org.au> wrote: > > Building your tree, today's linux-next build (powerpc ppc64_defconfig) > produced this warning: > > mm/memory_hotplug.c: In function 'try_offline_node': > mm/memory_hotplug.c:2120:6: warning: unused variable 'i' [-Wunused-variable] > int i; > ^ > > Introduced by commit > > 9dcb8b685fc3 ("mm: remove per-zone hashtable of bitlock waitqueues")
Strange. I wonder why I didn't see that warning. Not with allmodconfig, and not with my normal build.
[ Looks around ]
Hmm. Apparently "allmodconfig" doesn't actually enable memory hotplug. And the reason is that allmodconfig enables KASAN, which then disables MEMORY_HOTPLUG.
I wonder if we should make KASAN depend on !COMPILE_TEST, because it does seem to disable a lot of build-time testing.
Oh well. I'll remove the stupid unused variable, thanks for the heads-up.
Linus
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