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| author | davidxu <davidxu@FreeBSD.org> | 2010-10-29 13:31:10 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2010-10-29 13:31:10 +0000 |
| commit | a5ea18413ed6beb09aa13011f52cb7f193b1614e (patch) | |
| tree | 920bbfb3509bcf0a8c856da9edccd1bbd416b6da /sys/kern/sched_ule.c | |
| parent | 192d172d5b1d8af52903ebccf1859dbd3a5385f3 (diff) | |
| download | FreeBSD-src-a5ea18413ed6beb09aa13011f52cb7f193b1614e.zip FreeBSD-src-a5ea18413ed6beb09aa13011f52cb7f193b1614e.tar.gz | |
Add sysctl kern.sched.cpusetsize to export the size of kernel cpuset,
also add sysconf() key _SC_CPUSET_SIZE to get sysctl value.
Submitted by: gcooper
Diffstat (limited to 'sys/kern/sched_ule.c')
| -rw-r--r-- | sys/kern/sched_ule.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index 4765c1c..641979d 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -2712,6 +2712,8 @@ sysctl_kern_sched_topology_spec(SYSCTL_HANDLER_ARGS) sbuf_delete(topo); return (err); } + +static size_t _kern_cpuset_size = sizeof(cpuset_t); #endif SYSCTL_NODE(_kern, OID_AUTO, sched, CTLFLAG_RW, 0, "Scheduler"); @@ -2748,6 +2750,15 @@ SYSCTL_INT(_kern_sched, OID_AUTO, steal_thresh, CTLFLAG_RW, &steal_thresh, 0, SYSCTL_PROC(_kern_sched, OID_AUTO, topology_spec, CTLTYPE_STRING | CTLFLAG_RD, NULL, 0, sysctl_kern_sched_topology_spec, "A", "XML dump of detected CPU topology"); + +/* + * Return the size of cpuset_t at the kernel level + * + * XXX (gcooper): replace ULONG with SIZE once CTLTYPE_SIZE is implemented. + */ +SYSCTL_ULONG(_kern_sched, OID_AUTO, cpusetsize, CTLFLAG_RD, + &_kern_cpuset_size, 0, "Kernel-level cpuset_t struct size"); + #endif /* ps compat. All cpu percentages from ULE are weighted. */ |
