Commit 8c0956aa authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar

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: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Tested-by: default avatarTony Lindgren <tony@atomide.com>
Tested-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: default avatarTony Lindgren <tony@atomide.com>
Acked-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: default avatarFrederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230112195541.599561742@infradead.org
parent 40dbea96
......@@ -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
......
......@@ -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)
......
......@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/cpuidle.h>
#include <trace/events/power.h>
......@@ -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 */
......
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