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pm: idle: Remove not necessary branch

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Remove a constant branch calling directly pm_save_idle.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2021-11-19 15:54:56 -08:00 • committed by Anas Nashif
commit 72262475f4
1 changed files with 22 additions and 34 deletions
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56
kernel/idle.c
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@ -17,37 +17,6 @@
LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);
/**
* @brief Indicate that kernel is idling in tickless mode
*
* Sets the kernel data structure idle field to either a positive value or
* K_FOREVER.
*/
static void pm_save_idle(void)
{
#ifdef CONFIG_PM
int32_t ticks = z_get_next_timeout_expiry();
_kernel.idle = ticks;
/*
* Call the suspend hook function of the soc interface to allow
* entry into a low power state. The function returns
* false if low power state was not entered, in which
* case, kernel does normal idle processing.
*
* This function is entered with interrupts disabled. If a low power
* state was entered, then the hook function should enable inerrupts
* before exiting. This is because the kernel does not do its own idle
* processing in those cases i.e. skips k_cpu_idle(). The kernel's
* idle processing re-enables interrupts which is essential for
* the kernel's scheduling logic.
*/
if (pm_system_suspend(ticks) == false) {
k_cpu_idle();
}
#endif
}
void z_pm_save_idle_exit(void)
{
#ifdef CONFIG_PM
@ -92,11 +61,30 @@ void idle(void *unused1, void *unused2, void *unused3)
*/
(void) arch_irq_lock();
if (IS_ENABLED(CONFIG_PM)) {
pm_save_idle();
} else {
#ifdef CONFIG_PM
_kernel.idle = z_get_next_timeout_expiry();
/*
* Call the suspend hook function of the soc interface
* to allow entry into a low power state. The function
* returns false if low power state was not entered, in
* which case, kernel does normal idle processing.
*
* This function is entered with interrupts disabled.
* If a low power state was entered, then the hook
* function should enable inerrupts before exiting.
* This is because the kernel does not do its own idle
* processing in those cases i.e. skips k_cpu_idle().
* The kernel's idle processing re-enables interrupts
* which is essential for the kernel's scheduling
* logic.
*/
if (pm_system_suspend(_kernel.idle) == false) {
k_cpu_idle();
}
#else
k_cpu_idle();
#endif
#if !defined(CONFIG_PREEMPT_ENABLED)
# if !defined(CONFIG_USE_SWITCH) || defined(CONFIG_SPARC)