Re: [tip:perf/urgent] perf tools: Fix pthread_attr_setaffinity_np build error
From: Ingo Molnar
Date: Sun Mar 01 2015 - 11:52:47 EST
* tip-bot for Adrian Hunter <tipbot@xxxxxxxxx> wrote:
> --- a/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c
> +++ b/tools/perf/config/feature-checks/test-pthread-attr-setaffinity-np.c
> @@ -5,10 +5,11 @@ int main(void)
> {
> int ret = 0;
> pthread_attr_t thread_attr;
> + cpu_set_t cs;
>
> pthread_attr_init(&thread_attr);
> /* don't care abt exact args, just the API itself in libpthread */
> - ret = pthread_attr_setaffinity_np(&thread_attr, 0, NULL);
> + ret = pthread_attr_setaffinity_np(&thread_attr, sizeof(cs), &cs);
So I'm splitting hairs, as we never run these testcases, but I think a
CPU_ZERO(&cs) is needed, as 'cs' might be uninitialized.
Thanks,
Ingo
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