commit 863f1482220034de0a85f8150384931318325953
author Joakim Hernberg <jbh@alchemy.lu> Thu Aug 14 19:29:29 2014 +0200
committer John Kacur <jkacur@redhat.com> Fri Aug 15 14:52:28 2014 +0200
tree 5e132e464fbc7dac1603f2ed862343b4f4bd3c01
parent dd01e7dab9a4eb7adf752d6fc7706b7ebe2b2f2c

cyclictest: make affinity option only use number of online cpus

When I boot my 8 core i7 laptop with the maxcpus=4 kernel boot flag,
cyclictest -S runs 8 threads.  This patch makes it only use the number
of online cpus instead.

Signed-off-by: Joakim Hernberg <jhernberg@alchemy.lu>
Signed-off-by: John Kacur <jkacur@redhat.com>

src/cyclictest/cyclictest.c

diff --git a/src/cyclictest/cyclictest.c b/src/cyclictest/cyclictest.c
index a3e7b1d..c727d54 100644
--- a/src/cyclictest/cyclictest.c
+++ b/src/cyclictest/cyclictest.c
@@ -1763,7 +1763,7 @@
 	sigset_t sigset;
 	int signum = SIGALRM;
 	int mode;
-	int max_cpus = sysconf(_SC_NPROCESSORS_CONF);
+	int max_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 	int i, ret = -1;
 	int status;
 

src/cyclictest/rt_numa.h

diff --git a/src/cyclictest/rt_numa.h b/src/cyclictest/rt_numa.h
index 60a1437..06c9420 100644
--- a/src/cyclictest/rt_numa.h
+++ b/src/cyclictest/rt_numa.h
@@ -128,7 +128,7 @@
 	int max_node, max_cpus;
 
 	max_node = numa_max_node();
-	max_cpus = sysconf(_SC_NPROCESSORS_CONF);
+	max_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 
 	if (cpu > max_cpus) {
 		errno = EINVAL;