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| author | Peter Zijlstra <peterz@infradead.org> | 2014-04-11 09:59:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-05-08 09:16:53 +0200 |
| commit | 2a705ad65c9c393df1a684c780f890a29aab1128 (patch) | |
| tree | 4a0b19473cdc4a0215eefb9e941f474fc6f90d61 /arch/tile | |
| parent | 39a4d9ca77a31503c6317e49742341d0859d5cb2 (diff) | |
| download | linux-2a705ad65c9c393df1a684c780f890a29aab1128.tar.gz linux-2a705ad65c9c393df1a684c780f890a29aab1128.tar.bz2 linux-2a705ad65c9c393df1a684c780f890a29aab1128.zip | |
sched/idle, alpha: Switch from TS_POLLING to TIF_POLLING_NRFLAG
Standardize the idle polling indicator to TIF_POLLING_NRFLAG such that
both TIF_NEED_RESCHED and TIF_POLLING_NRFLAG are in the same word.
This will allow us, using fetch_or(), to both set NEED_RESCHED and
check for POLLING_NRFLAG in a single operation and avoid pointless
wakeups.
Changing from the non-atomic thread_info::status flags to the atomic
thread_info::flags shouldn't be a big issue since most polling state
changes were followed/preceded by a full memory barrier anyway.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: 蔡正龙 <zhenglong.cai@cs2c.com.cn>
Cc: linux-alpha@vger.kernel.org
Link: http://lkml.kernel.org/n/tip-9tfzr196gs0n2afxv0ga8pc3@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/tile')
0 files changed, 0 insertions, 0 deletions