Re: [PATCH V7 7/7] powernv/cpuidle: Enable idle powernv cpu to call into the cpuidle framework.

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On 10/29/2013 12:02 PM, Deepthi Dharwar wrote:
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 <deepthi@xxxxxxxxxxxxxxxxxx>

Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>

---
  arch/powerpc/platforms/powernv/setup.c |   13 ++++++++++++-
  1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index e239dcf..42a6ba0 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>
@@ -192,6 +193,16 @@ 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()) {
+		power7_idle();
+	}
+}
+
  static int __init pnv_probe(void)
  {
  	unsigned long root = of_get_flat_dt_root();
@@ -222,7 +233,7 @@ 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,



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