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| author | Paul Jackson <pj@sgi.com> | 2005-09-12 04:30:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-12 09:16:27 -0700 |
| commit | b3426599af9524104be6938bcb1fcaab314781c7 (patch) | |
| tree | c6d354bddb5b8cd298d139b60a9257ebd8323b90 /include/linux | |
| parent | f24ec7f6c6278c0ea4c00efe96d50b1e66796c44 (diff) | |
| download | blackbird-op-linux-b3426599af9524104be6938bcb1fcaab314781c7.tar.gz blackbird-op-linux-b3426599af9524104be6938bcb1fcaab314781c7.zip | |
[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')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index ed3bb19d1337..38c8654aaa96 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; |
