Messages in this thread | | | Date | Sat, 25 Jan 2014 09:48:00 +0100 | From | Ingo Molnar <> | Subject | Re: [RFC PATCH v5 1/2] sysctl: Make neg_one a standard constraint |
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* Aaron Tomlin <atomlin@redhat.com> wrote:
> Add neg_one to the list of standard constraints. > > Signed-off-by: Aaron Tomlin <atomlin@redhat.com> > Acked-by: Rik van Riel <riel@redhat.com> > Acked-by: David Rientjes <rientjes@google.com> > --- > kernel/sysctl.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/sysctl.c b/kernel/sysctl.c > index 34a6047..dd531a6 100644 > --- a/kernel/sysctl.c > +++ b/kernel/sysctl.c > @@ -122,6 +122,7 @@ extern int blk_iopoll_enabled; > static int sixty = 60; > #endif > > +static int neg_one = -1; > static int zero; > static int __maybe_unused one = 1; > static int __maybe_unused two = 2;
So what happens if CONFIG_DETECT_HUNG_TASK is not defined and neg_one is unused? The compiler generates an unused variable warning.
Thanks,
Ingo
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