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Commit 89aca475 authored by Cyril Bur's avatar Cyril Bur Committed by Michael Ellerman
Browse files

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: default avatarCyril Bur <cyrilbur@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 8f6a9042

tools/testing/selftests/powerpc/benchmarks/context_switch.c

+14 −3
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
 */



#define _GNU_SOURCE

#include <errno.h>

#include <sched.h>

#include <string.h>

#include <stdio.h>
@@ -75,6 +76,7 @@ static void touch(void) 


static void start_thread_on(void *(*fn)(void *), void *arg, unsigned long cpu)

{

	int rc;

	pthread_t tid;

	cpu_set_t cpuset;

	pthread_attr_t attr;
@@ -82,14 +84,23 @@ static void start_thread_on(void *(*fn)(void *), void *arg, unsigned long cpu) 
	CPU_ZERO(&cpuset);

	CPU_SET(cpu, &cpuset);



	pthread_attr_init(&attr);

	rc = pthread_attr_init(&attr);

	if (rc) {

		errno = rc;

		perror("pthread_attr_init");

		exit(1);

	}



	if (pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpuset)) {

	rc = pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpuset);

	if (rc)	{

		errno = rc;

		perror("pthread_attr_setaffinity_np");

		exit(1);

	}



	if (pthread_create(&tid, &attr, fn, arg)) {

	rc = pthread_create(&tid, &attr, fn, arg);

	if (rc) {

		errno = rc;

		perror("pthread_create");

		exit(1);

	}