ARM: S3C64XX: Reduce residency requirement for cpuidle WFI mode

Entering and leaving WFI is really cheap so there's no reason to have much of a residency requirement for the state. Lower it to 1ms.

Signed-off-by Mark Brown <[email protected]>

---
 arch/arm/mach-s3c64xx/cpuidle.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

arch/arm/mach- renamed from arch/arm/mach-s3c64xx/cpuidle.c +0 -0

s3c64xx/cpuidle.c
index 625d2c7..179460f 100644

arch/arm/mach-s3c64xx/cpuidle.c +1 -2

@@ -55,7 +55,7 @@ static struct cpuidle_state s3c64xx_cpuidle_set[] = {
 	[0] = {
 		.enter			= s3c64xx_enter_idle,
 		.exit_latency		= 1,
-		.target_residency	= 100000,
+		.target_residency	= 1,
 		.flags			= CPUIDLE_FLAG_TIME_VALID,
 		.name			= "IDLE",
 		.desc			= "System active, ARM gated",
--

1.7.7.3

arch/arm/mach-s3c64xx/cpuidle.c static struct cpuidle_state s3c64xx_cpuidle_set[] = { · line 58

Quoted 5 lines · Mark Brown

Entering and leaving WFI is really cheap so there's no reason to have much of a residency requirement for the state. Lower it to 1ms.

arch/arm/mach-s3c64xx/cpuidle.c +1 -1

-		.target_residency	= 100000,
+		.target_residency	= 1,

OK, will apply.
Mark, do you want to send this before v3.2?

Quoted 3 lines · Kukjin Kim

Quoted 1 line · Mark Brown

Entering and leaving WFI is really cheap so there's no reason to have

much

Quoted 1 line

Quoted 1 line

of a residency requirement for the state. Lower it to 1ms.

Quoted 5 lines

arch/arm/mach-s3c64xx/cpuidle.c static struct cpuidle_state s3c64xx_cpuidle_set[] = { · line 58

Quoted 2 lines

arch/arm/mach-s3c64xx/cpuidle.c +1 -1

-		.target_residency	= 100000,
+		.target_residency	= 1,

OK, will apply.
Mark, do you want to send this before v3.2?

It doesn't seem super urgent, though it'd be nice to get it into 3.3 with the original patch adding the support.