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| author | Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> | 2012-09-28 20:27:49 +0800 |
|---|---|---|
| committer | Fengguang Wu <fengguang.wu@intel.com> | 2012-09-28 20:27:49 +0800 |
| commit | 2f60d628ffd042e65e0b1d3431fb3e38d6f7c1be (patch) | |
| tree | ab0abd6f9936db1441382f862028a4c22b7239e1 /kernel/sched | |
| parent | 0e2f2b23672055e1301c11509d5b8eda7b718d8e (diff) | |
CPU hotplug, writeback: Don't call writeback_set_ratelimit() too often during hotplug
The CPU hotplug callback related to writeback calls writeback_set_ratelimit()
during every state change in the hotplug sequence. This is unnecessary
since num_online_cpus() changes only once during the entire hotplug operation.
So invoke the function only once per hotplug, thereby avoiding the
unnecessary repetition of those costly calculations.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/sched')
0 files changed, 0 insertions, 0 deletions