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authorScott Wood <scottwood@freescale.com>2013-11-01 21:17:16 (GMT)
committerScott Wood <scottwood@freescale.com>2013-11-03 22:47:10 (GMT)
commit31110de40dca4d4aeff4f253b3def948b88fa590 (patch)
tree0d811783836d52f15e37b4244de54f44ed4f93ad /arch/powerpc/kernel/idle.c
parentae60d5d27c429b13cf28a09ab8b9d30682433c5a (diff)
parent8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff)
downloadlinux-fsl-qoriq-31110de40dca4d4aeff4f253b3def948b88fa590.tar.xz
Merge tag 'v3.10' into sdk-kernel-3.10
git rebase --continue Linux 3.10 Conflicts: Documentation/virtual/kvm/api.txt arch/ia64/kvm/Makefile arch/powerpc/Kconfig arch/powerpc/Makefile arch/powerpc/boot/dts/b4420qds.dts arch/powerpc/boot/dts/b4860qds.dts arch/powerpc/boot/dts/b4qds.dts arch/powerpc/boot/dts/fsl/b4420si-post.dtsi arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi arch/powerpc/boot/dts/fsl/b4860si-post.dtsi arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi arch/powerpc/boot/dts/fsl/b4si-post.dtsi arch/powerpc/boot/dts/fsl/p1010si-post.dtsi arch/powerpc/boot/dts/fsl/p2041si-post.dtsi arch/powerpc/boot/dts/fsl/p3041si-post.dtsi arch/powerpc/boot/dts/fsl/p4080si-post.dtsi arch/powerpc/boot/dts/fsl/p5020si-post.dtsi arch/powerpc/boot/dts/fsl/p5040si-post.dtsi arch/powerpc/boot/dts/fsl/qonverge-usb2-dr-0.dtsi arch/powerpc/boot/dts/fsl/qoriq-sec5.0-0.dtsi arch/powerpc/boot/dts/fsl/t4240si-post.dtsi arch/powerpc/boot/dts/fsl/t4240si-pre.dtsi arch/powerpc/boot/dts/p1025rdb_36b.dts arch/powerpc/boot/dts/t4240qds.dts arch/powerpc/configs/corenet64_smp_defconfig arch/powerpc/configs/mpc85xx_defconfig arch/powerpc/configs/mpc85xx_smp_defconfig arch/powerpc/include/asm/cputable.h arch/powerpc/include/asm/kvm_host.h arch/powerpc/include/asm/kvm_ppc.h arch/powerpc/include/asm/machdep.h arch/powerpc/include/uapi/asm/kvm.h arch/powerpc/kernel/cpu_setup_fsl_booke.S arch/powerpc/kernel/cputable.c arch/powerpc/kernel/idle.c arch/powerpc/kernel/pci-common.c arch/powerpc/kvm/Kconfig arch/powerpc/kvm/book3s.c arch/powerpc/kvm/booke.c arch/powerpc/kvm/e500.c arch/powerpc/kvm/e500_mmu.c arch/powerpc/kvm/e500_mmu_host.c arch/powerpc/kvm/e500mc.c arch/powerpc/kvm/emulate.c arch/powerpc/kvm/irq.h arch/powerpc/kvm/mpic.c arch/powerpc/kvm/powerpc.c arch/powerpc/mm/tlb_nohash.c arch/powerpc/platforms/85xx/Kconfig arch/powerpc/platforms/85xx/b4_qds.c arch/powerpc/platforms/85xx/t4240_qds.c arch/powerpc/platforms/pseries/smp.c arch/powerpc/sysdev/fsl_85xx_l2ctlr.c arch/powerpc/sysdev/fsl_msi.c arch/powerpc/sysdev/fsl_pci.c arch/powerpc/sysdev/fsl_pci.h arch/powerpc/sysdev/mpic.c arch/x86/kvm/Makefile arch/x86/kvm/x86.c drivers/Kconfig drivers/clk/Kconfig drivers/cpufreq/Makefile drivers/crypto/caam/caamalg.c drivers/crypto/caam/intern.h drivers/crypto/caam/jr.c drivers/crypto/caam/regs.h drivers/infiniband/ulp/ipoib/ipoib_ethtool.c drivers/iommu/Makefile drivers/iommu/amd_iommu.c drivers/iommu/exynos-iommu.c drivers/iommu/intel-iommu.c drivers/iommu/iommu.c drivers/iommu/msm_iommu.c drivers/iommu/omap-iommu.c drivers/iommu/tegra-gart.c drivers/iommu/tegra-smmu.c drivers/misc/Makefile drivers/mmc/card/block.c drivers/mmc/card/queue.c drivers/mmc/core/core.c drivers/mtd/nand/fsl_ifc_nand.c drivers/net/ethernet/3com/3c501.c drivers/net/ethernet/8390/3c503.c drivers/net/ethernet/dec/ewrk3.c drivers/net/ethernet/freescale/fec.c drivers/net/ethernet/freescale/gianfar.c drivers/net/ethernet/freescale/gianfar.h drivers/net/ethernet/i825xx/3c505.c drivers/net/ethernet/i825xx/3c507.c drivers/rtc/rtc-ds3232.c drivers/s390/net/qeth_core_main.c drivers/staging/Kconfig drivers/staging/Makefile drivers/staging/ccg/u_ether.c drivers/usb/gadget/fsl_udc_core.c drivers/usb/otg/fsl_otg.c drivers/vfio/vfio.c drivers/watchdog/Kconfig include/linux/iommu.h include/linux/kvm_host.h include/linux/mmc/sdhci.h include/linux/msi.h include/linux/netdev_features.h include/linux/pci.h include/linux/skbuff.h include/net/ip6_route.h include/net/sch_generic.h include/net/xfrm.h include/uapi/linux/kvm.h net/core/netpoll.c virt/kvm/irqchip.c virt/kvm/kvm_main.c
Diffstat (limited to 'arch/powerpc/kernel/idle.c')
-rw-r--r--arch/powerpc/kernel/idle.c91
1 files changed, 28 insertions, 63 deletions
diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c
index 3656e88..de91cf1 100644
--- a/arch/powerpc/kernel/idle.c
+++ b/arch/powerpc/kernel/idle.c
@@ -33,11 +33,6 @@
#include <asm/runlatch.h>
#include <asm/smp.h>
-#ifdef CONFIG_HOTPLUG_CPU
-#define cpu_should_die() cpu_is_offline(smp_processor_id())
-#else
-#define cpu_should_die() 0
-#endif
unsigned long cpuidle_disable = IDLE_NO_OVERRIDE;
EXPORT_SYMBOL(cpuidle_disable);
@@ -50,70 +45,40 @@ static int __init powersave_off(char *arg)
}
__setup("powersave=off", powersave_off);
-/*
- * The body of the idle task.
- */
-void cpu_idle(void)
+#ifdef CONFIG_HOTPLUG_CPU
+void arch_cpu_idle_dead(void)
{
- set_thread_flag(TIF_POLLING_NRFLAG);
- while (1) {
- tick_nohz_idle_enter();
- rcu_idle_enter();
-
- while (!need_resched() && !cpu_should_die()) {
- ppc64_runlatch_off();
-
- if (ppc_md.power_save) {
- clear_thread_flag(TIF_POLLING_NRFLAG);
- /*
- * smp_mb is so clearing of TIF_POLLING_NRFLAG
- * is ordered w.r.t. need_resched() test.
- */
- smp_mb();
- local_irq_disable();
-
- /* Don't trace irqs off for idle */
- stop_critical_timings();
-
- /* check again after disabling irqs */
- if (!need_resched() && !cpu_should_die()) {
-#if !defined(CONFIG_DEBUG_CW)
- ppc_md.power_save();
+ sched_preempt_enable_no_resched();
+ cpu_die();
+}
#endif
- }
-
- start_critical_timings();
- /* Some power_save functions return with
- * interrupts enabled, some don't.
- */
- if (irqs_disabled())
- local_irq_enable();
- set_thread_flag(TIF_POLLING_NRFLAG);
-
- } else {
- /*
- * Go into low thread priority and possibly
- * low power mode.
- */
- HMT_low();
- HMT_very_low();
- }
- }
+void arch_cpu_idle(void)
+{
+ ppc64_runlatch_off();
- HMT_medium();
- ppc64_runlatch_on();
- rcu_idle_exit();
- tick_nohz_idle_exit();
-#ifdef CONFIG_FSL_ERRATUM_A_006184
- mtspr(SPRN_TSR, TSR_ENW);
+ if (ppc_md.power_save) {
+#if !defined(CONFIG_DEBUG_CW)
+ ppc_md.power_save();
#endif
- if (cpu_should_die()) {
- sched_preempt_enable_no_resched();
- cpu_die();
- }
- schedule_preempt_disabled();
+ /*
+ * Some power_save functions return with
+ * interrupts enabled, some don't.
+ */
+ if (irqs_disabled())
+ local_irq_enable();
+ } else {
+ local_irq_enable();
+ /*
+ * Go into low thread priority and possibly
+ * low power mode.
+ */
+ HMT_low();
+ HMT_very_low();
}
+
+ HMT_medium();
+ ppc64_runlatch_on();
}
int powersave_nap;