[PATCH 0/4] sched / idle: Reduce the number of branches in the idle loop

[Rafael J. Wysocki]

Hi,

The "reflect" variable that had to be added to cpuidle_idle_call() to fix a
regression during the 4.0 cycle has bothered me a bit since then and guess
what?  It is not necessary.

After the last regression fix related to tick_broadcast_exit() I realized
that it should be possible to eliminate this variable by splitting
cpuidle_idle_call() into smaller routines and reordering the code in
question which is done by this patch series.

It also gets rid of one more redundant check while at it.

[1/4] Move the default idle call code into a separate function.
[2/4] Make cpuidle_reflect() check the sign of its index arg.
[3/4] Eliminate the "reflect" check from cpuidle_idle_call().
[4/4] Eliminate a redundant check of the cpuidle_enter() return value.

All on top of 4.1-rc2.

Thanks!


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/