From 8c0956aa76f97003e2ac96e86b00a2a4e82abf8e Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 12 Jan 2023 20:43:51 +0100 Subject: cpuidle, OMAP3: Push RCU-idle into omap_sram_idle() OMAP3 uses full SoC suspend modes as idle states, as such it needs the whole power-domain and clock-domain code from the idle path. All that code is not suitable to run with RCU disabled, as such push RCU-idle deeper still. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Tested-by: Tony Lindgren Tested-by: Ulf Hansson Reviewed-by: Tony Lindgren Acked-by: Rafael J. Wysocki Acked-by: Frederic Weisbecker Link: https://lore.kernel.org/r/20230112195541.599561742@infradead.org --- arch/arm/mach-omap2/cpuidle34xx.c | 4 +--- arch/arm/mach-omap2/pm.h | 2 +- arch/arm/mach-omap2/pm34xx.c | 12 ++++++++++-- 3 files changed, 12 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c index 6d63769cef0f..2ab5dcbfb7f6 100644 --- a/arch/arm/mach-omap2/cpuidle34xx.c +++ b/arch/arm/mach-omap2/cpuidle34xx.c @@ -133,9 +133,7 @@ static int omap3_enter_idle(struct cpuidle_device *dev, } /* Execute ARM wfi */ - ct_cpuidle_enter(); - omap_sram_idle(); - ct_cpuidle_exit(); + omap_sram_idle(true); /* * Call idle CPU PM enter notifier chain to restore diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index 80e84ae66aee..4a6c9d12ded3 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -29,7 +29,7 @@ static inline int omap4_idle_init(void) extern void *omap3_secure_ram_storage; extern void omap3_pm_off_mode_enable(int); -extern void omap_sram_idle(void); +extern void omap_sram_idle(bool rcuidle); extern int omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused); #if defined(CONFIG_PM_OPP) diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 9a3535b06d07..985609123a22 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -26,6 +26,7 @@ #include #include #include +#include #include @@ -174,7 +175,7 @@ static int omap34xx_do_sram_idle(unsigned long save_state) return 0; } -void omap_sram_idle(void) +void omap_sram_idle(bool rcuidle) { /* Variable to tell what needs to be saved and restored * in omap_sram_idle*/ @@ -254,11 +255,18 @@ void omap_sram_idle(void) */ if (save_state) omap34xx_save_context(omap3_arm_context); + + if (rcuidle) + ct_cpuidle_enter(); + if (save_state == 1 || save_state == 3) cpu_suspend(save_state, omap34xx_do_sram_idle); else omap34xx_do_sram_idle(save_state); + if (rcuidle) + ct_cpuidle_exit(); + /* Restore normal SDRC POWER settings */ if (cpu_is_omap3430() && omap_rev() >= OMAP3430_REV_ES3_0 && (omap_type() == OMAP2_DEVICE_TYPE_EMU || @@ -316,7 +324,7 @@ static int omap3_pm_suspend(void) omap3_intc_suspend(); - omap_sram_idle(); + omap_sram_idle(false); restore: /* Restore next_pwrsts */ -- cgit v1.2.3