Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 32/35] perf bench futex: Use __maybe_unused | Date | Mon, 6 Mar 2017 16:38:22 -0300 |
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From: Arnaldo Carvalho de Melo <acme@redhat.com>
Instead of attributing a variable to itself to silence the compiler, use the attribute designed for that, avoiding this:
In file included from bench/futex-hash.c:24: bench/futex.h:95:7: error: explicitly assigning value of variable of type 'pthread_attr_t *' to itself [-Werror,-Wself-assign] attr = attr; ~~~~ ^ ~~~~ bench/futex.h:96:13: error: explicitly assigning value of variable of type 'size_t' (aka 'unsigned long') to itself [-Werror,-Wself-assign] cpusetsize = cpusetsize; ~~~~~~~~~~ ^ ~~~~~~~~~~ bench/futex.h:97:9: error: explicitly assigning value of variable of type 'cpu_set_t *' (aka 'struct cpu_set_t *') to itself [-Werror,-Wself-assign] cpuset = cpuset; ~~~~~~ ^ ~~~~~~
That is only triggered when HAVE_PTHREAD_ATTR_SETAFFINITY_NP isn't set.
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-14ws1d1elj2d5ej8g7cwdqau@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/bench/futex.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/tools/perf/bench/futex.h b/tools/perf/bench/futex.h index b2e06d1190d0..e44fd3239530 100644 --- a/tools/perf/bench/futex.h +++ b/tools/perf/bench/futex.h @@ -88,13 +88,11 @@ futex_cmp_requeue(u_int32_t *uaddr, u_int32_t val, u_int32_t *uaddr2, int nr_wak #ifndef HAVE_PTHREAD_ATTR_SETAFFINITY_NP #include <pthread.h> -static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr, - size_t cpusetsize, - cpu_set_t *cpuset) +#include <linux/compiler.h> +static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr __maybe_unused, + size_t cpusetsize __maybe_unused, + cpu_set_t *cpuset __maybe_unused) { - attr = attr; - cpusetsize = cpusetsize; - cpuset = cpuset; return 0; } #endif -- 2.9.3
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