From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Move the polling state initialization code to a separate file built
conditionally on CONFIG_ARCH_HAS_CPU_RELAX to get rid of the #ifdef
in driver.c.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/cpuidle/Makefile | 1 +
drivers/cpuidle/driver.c | 31 -------------------------------
drivers/cpuidle/poll_state.c | 36 ++++++++++++++++++++++++++++++++++++
include/linux/cpuidle.h | 6 ++++++
4 files changed, 43 insertions(+), 31 deletions(-)
Index: linux-pm/drivers/cpuidle/Makefile
===================================================================
--- linux-pm.orig/drivers/cpuidle/Makefile
+++ linux-pm/drivers/cpuidle/Makefile
@@ -5,6 +5,7 @@
obj-y += cpuidle.o driver.o governor.o sysfs.o governors/
obj-$(CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED) += coupled.o
obj-$(CONFIG_DT_IDLE_STATES) += dt_idle_states.o
+obj-$(CONFIG_ARCH_HAS_CPU_RELAX) += poll_state.o
##################################################################################
# ARM SoC drivers
Index: linux-pm/drivers/cpuidle/poll_state.c
===================================================================
--- /dev/null
+++ linux-pm/drivers/cpuidle/poll_state.c
@@ -0,0 +1,36 @@
+/*
+ * poll_state.c - Polling idle state
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/sched.h>
+#include <linux/sched/idle.h>
+
+static int __cpuidle poll_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
+{
+ local_irq_enable();
+ if (!current_set_polling_and_test()) {
+ while (!need_resched())
+ cpu_relax();
+ }
+ current_clr_polling();
+
+ return index;
+}
+
+void poll_idle_init(struct cpuidle_driver *drv)
+{
+ struct cpuidle_state *state = &drv->states[0];
+
+ snprintf(state->name, CPUIDLE_NAME_LEN, "POLL");
+ snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
+ state->exit_latency = 0;
+ state->target_residency = 0;
+ state->power_usage = -1;
+ state->enter = poll_idle;
+ state->disabled = false;
+ state->flags = CPUIDLE_FLAG_POLLING;
+}
Index: linux-pm/include/linux/cpuidle.h
===================================================================
--- linux-pm.orig/include/linux/cpuidle.h
+++ linux-pm/include/linux/cpuidle.h
@@ -225,6 +225,12 @@ static inline void cpuidle_coupled_paral
}
#endif
+#ifdef CONFIG_ARCH_HAS_CPU_RELAX
+void poll_idle_init(struct cpuidle_driver *drv);
+#else
+static void poll_idle_init(struct cpuidle_driver *drv) {}
+#endif
+
/******************************
* CPUIDLE GOVERNOR INTERFACE *
******************************/
Index: linux-pm/drivers/cpuidle/driver.c
===================================================================
--- linux-pm.orig/drivers/cpuidle/driver.c
+++ linux-pm/drivers/cpuidle/driver.c
@@ -179,37 +179,6 @@ static void __cpuidle_driver_init(struct
}
}
-#ifdef CONFIG_ARCH_HAS_CPU_RELAX
-static int __cpuidle poll_idle(struct cpuidle_device *dev,
- struct cpuidle_driver *drv, int index)
-{
- local_irq_enable();
- if (!current_set_polling_and_test()) {
- while (!need_resched())
- cpu_relax();
- }
- current_clr_polling();
-
- return index;
-}
-
-static void poll_idle_init(struct cpuidle_driver *drv)
-{
- struct cpuidle_state *state = &drv->states[0];
-
- snprintf(state->name, CPUIDLE_NAME_LEN, "POLL");
- snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
- state->exit_latency = 0;
- state->target_residency = 0;
- state->power_usage = -1;
- state->enter = poll_idle;
- state->disabled = false;
- state->flags = CPUIDLE_FLAG_POLLING;
-}
-#else
-static void poll_idle_init(struct cpuidle_driver *drv) {}
-#endif /* !CONFIG_ARCH_HAS_CPU_RELAX */
-
/**
* __cpuidle_register_driver: register the driver
* @drv: a valid pointer to a struct cpuidle_driver
--
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