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authorPaul Jackson <pj@sgi.com>2005-09-12 04:30:30 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-12 09:16:27 -0700
commitb3426599af9524104be6938bcb1fcaab314781c7 (patch)
treec6d354bddb5b8cd298d139b60a9257ebd8323b90 /include/linux/sched.h
parentf24ec7f6c6278c0ea4c00efe96d50b1e66796c44 (diff)
[PATCH] cpuset semaphore depth check optimize
Optimize the deadlock avoidance check on the global cpuset semaphore cpuset_sem. Instead of adding a depth counter to the task struct of each task, rather just two words are enough, one to store the depth and the other the current cpuset_sem holder. Thanks to Nikita Danilov for the idea. Signed-off-by: Paul Jackson <pj@sgi.com> [ We may want to change this further, but at least it's now a totally internal decision to the cpusets code ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/sched.h')
-rw-r--r--include/linux/sched.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index ed3bb19d133..38c8654aaa9 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -785,7 +785,6 @@ struct task_struct {
short il_next;
#endif
#ifdef CONFIG_CPUSETS
- short cpuset_sem_nest_depth;
struct cpuset *cpuset;
nodemask_t mems_allowed;
int cpuset_mems_generation;