[PATCH 9/9] powerpc/powernv: Enter deepest supported idle state in offline
From: Shreyas B. Prabhu <hidden>
Date: 2014-08-25 18:02:48
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Enter winkle during offline if supported, else revert to sleep or nap. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <redacted> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Shreyas B. Prabhu <redacted> --- arch/powerpc/platforms/powernv/smp.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c
index 3ad31d2..e3fc2c9 100644
--- a/arch/powerpc/platforms/powernv/smp.c
+++ b/arch/powerpc/platforms/powernv/smp.c@@ -169,8 +169,10 @@ static void pnv_smp_cpu_kill_self(void) while (!generic_check_cpu_restart(cpu)) { ppc64_runlatch_off(); - /* If sleep is supported, go to sleep, instead of nap */ - if (idle_states & IDLE_USE_SLEEP) + /* Go to deepest supported idle state */ + if (idle_states & IDLE_USE_WINKLE) + power7_winkle(); + else if (idle_states & IDLE_USE_SLEEP) power7_sleep(); else power7_nap(1);
--
1.9.0