Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 11 Apr 2014 07:38:14 -0700 | From | Richard Henderson <> | Subject | Re: [RFC][PATCH 1/8] sched,idle,alpha: Switch from TS_POLLING to TIF_POLLING_NRFLAG |
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On 04/11/2014 06:42 AM, Peter Zijlstra wrote: > 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. > > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Andy Lutomirski <luto@amacapital.net> > Cc: Richard Henderson <rth@twiddle.net> > Signed-off-by: Peter Zijlstra <peterz@infradead.org> > --- > arch/alpha/include/asm/thread_info.h | 4 ++-- > 1 file changed, 2 inser
Acked-by: Richard Henderson <rth@twiddle.net>
r~
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