You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.3 KiB
71 lines
2.3 KiB
From 4ba9722027d9aeec173866b5ca12282268594f35 Mon Sep 17 00:00:00 2001
|
|
Message-Id: <4ba9722027d9aeec173866b5ca12282268594f35.1566225007.git.aquini@redhat.com>
|
|
In-Reply-To: <d42f467a923dfc09309acb7a83b42e3285fbd8f4.1566225007.git.aquini@redhat.com>
|
|
References: <d42f467a923dfc09309acb7a83b42e3285fbd8f4.1566225007.git.aquini@redhat.com>
|
|
From: Sandipan Das <sandipan@linux.ibm.com>
|
|
Date: Thu, 15 Aug 2019 13:08:30 +0530
|
|
Subject: [RHEL7 PATCH 03/31] tests: alloc-instantiate-race: Use online cpus
|
|
only
|
|
|
|
This ensures that the two processes or threads between which
|
|
the race condition is introduced are always running on online
|
|
cpus. For offline cpus, sched_setaffinity() will always fail.
|
|
|
|
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
|
|
Signed-off-by: Eric B Munson <emunson@mgebm.net>
|
|
Signed-off-by: Rafael Aquini <aquini@redhat.com>
|
|
---
|
|
tests/alloc-instantiate-race.c | 12 +++++++-----
|
|
1 file changed, 7 insertions(+), 5 deletions(-)
|
|
|
|
diff --git a/tests/alloc-instantiate-race.c b/tests/alloc-instantiate-race.c
|
|
index 7f84e8a..f55e2f7 100644
|
|
--- a/tests/alloc-instantiate-race.c
|
|
+++ b/tests/alloc-instantiate-race.c
|
|
@@ -121,7 +121,9 @@ static void run_race(void *syncarea, int race_type)
|
|
int fd;
|
|
void *p;
|
|
int status1, status2;
|
|
- int ret;
|
|
+ int online_cpus[2], ret;
|
|
+
|
|
+ check_online_cpus(online_cpus, 2);
|
|
|
|
memset(syncarea, 0, sizeof(*trigger1) + sizeof(*trigger2));
|
|
trigger1 = syncarea;
|
|
@@ -143,13 +145,13 @@ static void run_race(void *syncarea, int race_type)
|
|
if (child1 < 0)
|
|
FAIL("fork(): %s", strerror(errno));
|
|
if (child1 == 0)
|
|
- proc_racer(p, 0, trigger1, trigger2);
|
|
+ proc_racer(p, online_cpus[0], trigger1, trigger2);
|
|
|
|
child2 = fork();
|
|
if (child2 < 0)
|
|
FAIL("fork(): %s", strerror(errno));
|
|
if (child2 == 0)
|
|
- proc_racer(p, 1, trigger2, trigger1);
|
|
+ proc_racer(p, online_cpus[1], trigger2, trigger1);
|
|
|
|
/* wait() calls */
|
|
ret = waitpid(child1, &status1, 0);
|
|
@@ -175,13 +177,13 @@ static void run_race(void *syncarea, int race_type)
|
|
} else {
|
|
struct racer_info ri1 = {
|
|
.p = p,
|
|
- .cpu = 0,
|
|
+ .cpu = online_cpus[0],
|
|
.mytrigger = trigger1,
|
|
.othertrigger = trigger2,
|
|
};
|
|
struct racer_info ri2 = {
|
|
.p = p,
|
|
- .cpu = 1,
|
|
+ .cpu = online_cpus[1],
|
|
.mytrigger = trigger2,
|
|
.othertrigger = trigger1,
|
|
};
|
|
--
|
|
1.8.3.1
|
|
|