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authorArnaldo Carvalho de Melo <acme@redhat.com>2021-07-14 19:06:38 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-07-14 19:06:38 +0300
commitd08c84e01afa7a7eee6badab25d5420fa847f783 (patch)
tree8572705a465b347e07bd852c67d5c0922a0c1073 /tools/perf/builtin-sched.c
parent50e98924d72dc730fe1f1646977205adf608dccd (diff)
downloadlinux-d08c84e01afa7a7eee6badab25d5420fa847f783.tar.xz
perf sched: Cast PTHREAD_STACK_MIN to int as it may turn into sysconf(__SC_THREAD_STACK_MIN_VALUE)
In fedora rawhide the PTHREAD_STACK_MIN define may end up expanded to a sysconf() call, and that will return 'long int', breaking the build: 45 fedora:rawhide : FAIL gcc version 11.1.1 20210623 (Red Hat 11.1.1-6) (GCC) builtin-sched.c: In function 'create_tasks': /git/perf-5.14.0-rc1/tools/include/linux/kernel.h:43:24: error: comparison of distinct pointer types lacks a cast [-Werror] 43 | (void) (&_max1 == &_max2); \ | ^~ builtin-sched.c:673:34: note: in expansion of macro 'max' 673 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | ^~~ cc1: all warnings being treated as errors $ grep __sysconf /usr/include/*/*.h /usr/include/bits/pthread_stack_min-dynamic.h:extern long int __sysconf (int __name) __THROW; /usr/include/bits/pthread_stack_min-dynamic.h:# define PTHREAD_STACK_MIN __sysconf (__SC_THREAD_STACK_MIN_VALUE) /usr/include/bits/time.h:extern long int __sysconf (int); /usr/include/bits/time.h:# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ $ So cast it to int to cope with that. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-sched.c')
-rw-r--r--tools/perf/builtin-sched.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 954ce2f594e9..aaf1cde476c9 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -670,7 +670,7 @@ static void create_tasks(struct perf_sched *sched)
err = pthread_attr_init(&attr);
BUG_ON(err);
err = pthread_attr_setstacksize(&attr,
- (size_t) max(16 * 1024, PTHREAD_STACK_MIN));
+ (size_t) max(16 * 1024, (int)PTHREAD_STACK_MIN));
BUG_ON(err);
err = pthread_mutex_lock(&sched->start_work_mutex);
BUG_ON(err);