From: John Kacur <jkacur@redhat.com>
To: rt-users <linux-rt-users@vger.kernel.org>
Cc: Clark Williams <williams@redhat.com>, John Kacur <jkacur@redhat.com>
Subject: [PATCH 3/4] rt-tests: cyclictest: Make the affinity mask apply to the main thread too
Date: Wed, 4 Mar 2020 16:55:47 -0500 [thread overview]
Message-ID: <20200304215548.13079-3-jkacur@redhat.com> (raw)
In-Reply-To: <20200304215548.13079-1-jkacur@redhat.com>
There is no reason that the main thread should be treated differently,
so apply the affinity setting there too.
Signed-off-by: John Kacur <jkacur@redhat.com>
---
src/cyclictest/cyclictest.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/src/cyclictest/cyclictest.c b/src/cyclictest/cyclictest.c
index 13d2b1722890..f8df4c6954ad 100644
--- a/src/cyclictest/cyclictest.c
+++ b/src/cyclictest/cyclictest.c
@@ -1992,6 +1992,17 @@ int main(int argc, char **argv)
if (verbose)
printf("Max CPUs = %d\n", max_cpus);
+ /* Restrict the main pid to the affinity specified by the user */
+ if (affinity_mask != NULL) {
+ int res;
+
+ errno = 0;
+ res = numa_sched_setaffinity(getpid(), affinity_mask);
+ if (res != 0) {
+ warn("Couldn't setaffinity in main thread: %s\n", strerror(errno));
+ }
+ }
+
if (trigger) {
int retval;
retval = trigger_init();
--
2.20.1
next prev parent reply other threads:[~2020-03-04 21:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-04 21:55 [PATCH 1/4] rt-tests: cyclictest: Remove HAVE_PARSE_CPUSTRING_ALL John Kacur
2020-03-04 21:55 ` [PATCH 2/4] rt-tests: cyclictest: Remove support for compiling without NUMA John Kacur
2020-03-04 21:55 ` John Kacur [this message]
2020-03-04 21:55 ` [PATCH 4/4] rt-tests: cyclictest: Fix -t without a user specified [NUM] John Kacur
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