[PATCH V5 5/5] powernv/cpuidle: Enable idle powernv cpu to call into the cpuidle framework.
flat view
STALE4818d
SUPERSEDED
From: Deepthi Dharwar <hidden>
Date: 2013-08-22 09:55:20
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Status: Superseded by v7 (posted 2013-10-29). [go to v7]
Revision v5 (3 revisions archived).
Revisions (3)
- v5 current
- v6 [diff against previous]
- v7 [diff against previous]
This patch enables idle cpu on the powernv platform to hook on to the cpuidle framework, if available, else call on to default idle platform code. Signed-off-by: Deepthi Dharwar <redacted> --- arch/powerpc/platforms/powernv/setup.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index 84438af..fc62f21 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c@@ -25,6 +25,7 @@ #include <linux/of.h> #include <linux/interrupt.h> #include <linux/bug.h> +#include <linux/cpuidle.h> #include <asm/machdep.h> #include <asm/firmware.h>
@@ -175,6 +176,17 @@ static void __init pnv_setup_machdep_rtas(void) } #endif /* CONFIG_PPC_POWERNV_RTAS */ +void powernv_idle(void) +{ + /* Hook to cpuidle framework if available, else + * call on default platform idle code + */ + if (cpuidle_idle_call()) { + HMT_low(); + HMT_very_low(); + } +} + static int __init pnv_probe(void) { unsigned long root = of_get_flat_dt_root();
@@ -205,7 +217,7 @@ define_machine(powernv) { .show_cpuinfo = pnv_show_cpuinfo, .progress = pnv_progress, .machine_shutdown = pnv_shutdown, - .power_save = power7_idle, + .power_save = powernv_idle, .calibrate_decr = generic_calibrate_decr, #ifdef CONFIG_KEXEC .kexec_cpu_down = pnv_kexec_cpu_down,