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cpuidle, arch: Mark all ct_cpuidle_enter() callers __cpuidle

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For all cpuidle drivers that use CPUIDLE_FLAG_RCU_IDLE, ensure that
all functions that call ct_cpuidle_enter() are marked __cpuidle.

( due to lack of noinstr validation on these platforms it is entirely
  possible this isn't complete )

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230112195542.274096325@infradead.org
This commit is contained in:
Peter Zijlstra 2023-01-12 20:44:02 +01:00 committed by Ingo Molnar
parent 17cc2b5525
commit 69e26b4f43
12 changed files with 33 additions and 38 deletions
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4
arch/arm/mach-imx/cpuidle-imx6q.c
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@ -17,8 +17,8 @@
static int num_idle_cpus = 0;
static DEFINE_RAW_SPINLOCK(cpuidle_lock);
static int imx6q_enter_wait(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
static __cpuidle int imx6q_enter_wait(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
{
raw_spin_lock(&cpuidle_lock);
if (++num_idle_cpus == num_online_cpus())

4
arch/arm/mach-imx/cpuidle-imx6sx.c
View File

@ -30,8 +30,8 @@ static int imx6sx_idle_finish(unsigned long val)
return 0;
}
static int imx6sx_enter_wait(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
static __cpuidle int imx6sx_enter_wait(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
{
imx6_set_lpm(WAIT_UNCLOCKED);

4
arch/arm/mach-omap2/omap-mpuss-lowpower.c
View File

@ -224,8 +224,8 @@ static void __init save_l2x0_context(void)
* 2 - CPUx L1 and logic lost + GIC lost: MPUSS OSWR
* 3 - CPUx L1 and logic lost + GIC + L2 lost: DEVICE OFF
*/
int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state,
bool rcuidle)
__cpuidle int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state,
bool rcuidle)
{
struct omap4_cpu_pm_info *pm_info = &per_cpu(omap4_pm_info, cpu);
unsigned int save_state = 0, cpu_logic_state = PWRDM_POWER_RET;

2
arch/arm/mach-omap2/pm34xx.c
View File

@ -175,7 +175,7 @@ static int omap34xx_do_sram_idle(unsigned long save_state)
return 0;
}
void omap_sram_idle(bool rcuidle)
__cpuidle void omap_sram_idle(bool rcuidle)
{
/* Variable to tell what needs to be saved and restored
* in omap_sram_idle*/

2
arch/arm64/kernel/cpuidle.c
View File

@ -62,7 +62,7 @@ int acpi_processor_ffh_lpi_probe(unsigned int cpu)
return psci_acpi_cpu_init_idle(cpu);
}
int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)
__cpuidle int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)
{
u32 state = lpi->address;

4
drivers/cpuidle/cpuidle-arm.c
View File

@ -31,8 +31,8 @@
* Called from the CPUidle framework to program the device to the
* specified target state selected by the governor.
*/
static int arm_enter_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
static __cpuidle int arm_enter_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
{
/*
* Pass idle state index to arm_cpuidle_suspend which in turn

4
drivers/cpuidle/cpuidle-big_little.c
View File

@ -122,8 +122,8 @@ static int notrace bl_powerdown_finisher(unsigned long arg)
* Called from the CPUidle framework to program the device to the
* specified target state selected by the governor.
*/
static int bl_enter_powerdown(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
static __cpuidle int bl_enter_powerdown(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
{
cpu_pm_enter();
ct_cpuidle_enter();

6
drivers/cpuidle/cpuidle-mvebu-v7.c
View File

@ -25,9 +25,9 @@
static int (*mvebu_v7_cpu_suspend)(int);
static int mvebu_v7_enter_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
static __cpuidle int mvebu_v7_enter_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
int ret;
bool deepidle = false;

17
drivers/cpuidle/cpuidle-psci.c
View File

@ -49,14 +49,9 @@ static inline u32 psci_get_domain_state(void)
return __this_cpu_read(domain_state);
}
static inline int psci_enter_state(int idx, u32 state)
{
return CPU_PM_CPU_IDLE_ENTER_PARAM(psci_cpu_suspend_enter, idx, state);
}
static int __psci_enter_domain_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx,
bool s2idle)
static __cpuidle int __psci_enter_domain_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx,
bool s2idle)
{
struct psci_cpuidle_data *data = this_cpu_ptr(&psci_cpuidle_data);
u32 *states = data->psci_states;
@ -192,12 +187,12 @@ static void psci_idle_init_cpuhp(void)
pr_warn("Failed %d while setup cpuhp state\n", err);
}
static int psci_enter_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
static __cpuidle int psci_enter_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
{
u32 *state = __this_cpu_read(psci_cpuidle_data.psci_states);
return psci_enter_state(idx, state[idx]);
return CPU_PM_CPU_IDLE_ENTER_PARAM(psci_cpu_suspend_enter, idx, state[idx]);
}
static const struct of_device_id psci_idle_state_match[] = {

4
drivers/cpuidle/cpuidle-qcom-spm.c
View File

@ -58,8 +58,8 @@ static int qcom_cpu_spc(struct spm_driver_data *drv)
return ret;
}
static int spm_enter_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
static __cpuidle int spm_enter_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
{
struct cpuidle_qcom_spm_data *data = container_of(drv, struct cpuidle_qcom_spm_data,
cpuidle_driver);

10
drivers/cpuidle/cpuidle-riscv-sbi.c
View File

@ -93,8 +93,8 @@ static int sbi_suspend(u32 state)
return sbi_suspend_finisher(state, 0, 0);
}
static int sbi_cpuidle_enter_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
static __cpuidle int sbi_cpuidle_enter_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
{
u32 *states = __this_cpu_read(sbi_cpuidle_data.states);
u32 state = states[idx];
@ -106,9 +106,9 @@ static int sbi_cpuidle_enter_state(struct cpuidle_device *dev,
idx, state);
}
static int __sbi_enter_domain_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx,
bool s2idle)
static __cpuidle int __sbi_enter_domain_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx,
bool s2idle)
{
struct sbi_cpuidle_data *data = this_cpu_ptr(&sbi_cpuidle_data);
u32 *states = data->states;

10
drivers/cpuidle/cpuidle-tegra.c
View File

@ -160,8 +160,8 @@ static int tegra_cpuidle_coupled_barrier(struct cpuidle_device *dev)
return 0;
}
static int tegra_cpuidle_state_enter(struct cpuidle_device *dev,
int index, unsigned int cpu)
static __cpuidle int tegra_cpuidle_state_enter(struct cpuidle_device *dev,
int index, unsigned int cpu)
{
int err;
@ -226,9 +226,9 @@ static int tegra_cpuidle_adjust_state_index(int index, unsigned int cpu)
return index;
}
static int tegra_cpuidle_enter(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
static __cpuidle int tegra_cpuidle_enter(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
bool do_rcu = drv->states[index].flags & CPUIDLE_FLAG_RCU_IDLE;
unsigned int cpu = cpu_logical_map(dev->cpu);