diff mbox

[v2,5/5] powerpc/powernv: Enter deepest supported idle state in offline

Message ID 1412149617-3178-6-git-send-email-shreyas@linux.vnet.ibm.com (mailing list archive)
State Changes Requested
Delegated to: Benjamin Herrenschmidt
Headers show

Commit Message

Shreyas B. Prabhu Oct. 1, 2014, 7:46 a.m. UTC 
Enter winkle during offline if supported, else revert to sleep or nap.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
---
 arch/powerpc/platforms/powernv/smp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox

Patch

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);