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selftests/powerpc: context_switch: Fix pthread errors
Turns out pthreads returns an errno and doesn't set errno. This doesn't play well with perror(). Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -10,6 +10,7 @@
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*/
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#define _GNU_SOURCE
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#include <errno.h>
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#include <sched.h>
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#include <string.h>
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#include <stdio.h>
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@ -75,6 +76,7 @@ static void touch(void)
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static void start_thread_on(void *(*fn)(void *), void *arg, unsigned long cpu)
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{
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int rc;
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pthread_t tid;
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cpu_set_t cpuset;
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pthread_attr_t attr;
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@ -82,14 +84,23 @@ static void start_thread_on(void *(*fn)(void *), void *arg, unsigned long cpu)
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CPU_ZERO(&cpuset);
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CPU_SET(cpu, &cpuset);
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pthread_attr_init(&attr);
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rc = pthread_attr_init(&attr);
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if (rc) {
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errno = rc;
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perror("pthread_attr_init");
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exit(1);
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}
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if (pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpuset)) {
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rc = pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpuset);
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if (rc) {
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errno = rc;
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perror("pthread_attr_setaffinity_np");
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exit(1);
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}
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if (pthread_create(&tid, &attr, fn, arg)) {
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rc = pthread_create(&tid, &attr, fn, arg);
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if (rc) {
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errno = rc;
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perror("pthread_create");
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exit(1);
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}
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