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| author |   Tejun Heo <tj@kernel.org> | 2012-09-18 12:48:43 -0700 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-09-19 10:13:12 -0700 |
| commit | ed48ece27cd3d5ee0354c32bbaec0f3e1d4715c3 (patch) | |
| tree | 9ead3fba10ccd3118e6c4f38ed61cbf2bb2cbb3f /drivers/cpufreq/powernow-k8.c | |
| parent | workqueue: always clear WORKER_REBIND in busy_worker_rebind_fn() (diff) | |
| download | linux-dev-ed48ece27cd3d5ee0354c32bbaec0f3e1d4715c3.tar.xz linux-dev-ed48ece27cd3d5ee0354c32bbaec0f3e1d4715c3.zip | |
workqueue: reimplement work_on_cpu() using system_wq
The existing work_on_cpu() implementation is hugely inefficient. It
creates a new kthread, execute that single function and then let the
kthread die on each invocation.
Now that system_wq can handle concurrent executions, there's no
advantage of doing this. Reimplement work_on_cpu() using system_wq
which makes it simpler and way more efficient.
stable: While this isn't a fix in itself, it's needed to fix a
workqueue related bug in cpufreq/powernow-k8. AFAICS, this
shouldn't break other existing users.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@vger.kernel.org
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions