Author: davidxu
Date: Tue Nov 2 02:13:13 2010
New Revision: 214653
URL: http://svn.freebsd.org/changeset/base/214653
Log:
Use sysctl kern.sched.cpusetsize to retrieve size of kernel cpuset.
Modified:
head/lib/libthr/thread/thr_attr.c
Modified: head/lib/libthr/thread/thr_attr.c
==============================================================================
--- head/lib/libthr/thread/thr_attr.c Tue Nov 2 01:26:21 2010
(r214652)
+++ head/lib/libthr/thread/thr_attr.c Tue Nov 2 02:13:13 2010
(r214653)
@@ -569,14 +569,11 @@ _get_kern_cpuset_size(void)
if (kern_cpuset_size == 0) {
size_t len;
- int maxcpus;
- len = sizeof(maxcpus);
- if (sysctlbyname("kern.smp.maxcpus", &maxcpus, &len, NULL, 0))
- PANIC("failed to get sysctl kern.smp.maxcpus");
- int nbits_long = sizeof(long) * NBBY;
- int num_long = (maxcpus + nbits_long - 1) / nbits_long;
- kern_cpuset_size = num_long * sizeof(long);
+ len = sizeof(kern_cpuset_size);
+ if (sysctlbyname("kern.sched.cpusetsize", &kern_cpuset_size,
+ &len, NULL, 0))
+ PANIC("failed to get sysctl kern.sched.cpusetsize");
}
return (kern_cpuset_size);
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