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Commit 756c560b authored by Satya Durga Srinivasu Prabhala's avatar Satya Durga Srinivasu Prabhala
Browse files

cpuidle: lpm-levels: update lpm_disallowed() with sched hints 



lpm_disallowed() should consider hint from scheduler via
sched_lpm_disallowed_time(), update it accordingly.
While at it, clean-up functions and move them under WALT config.

Change-Id: I7bb38951c4a892b86e50458a5c10e5e7497e9b84
Signed-off-by: default avatarSatya Durga Srinivasu Prabhala <satyap@codeaurora.org>
parent 1ee0801d

drivers/cpuidle/lpm-levels.c

+3 −29
Original line number Diff line number Diff line
@@ -46,7 +46,6 @@ 
#define SCLK_HZ (32768)

#define PSCI_POWER_STATE(reset) (reset << 30)

#define PSCI_AFFINITY_LEVEL(lvl) ((lvl & 0x3) << 24)

#define BIAS_HYST (bias_hyst * NSEC_PER_MSEC)



enum {

	MSM_LPM_LVL_DBG_SUSPEND_LIMITS = BIT(0),
@@ -81,9 +80,6 @@ struct lpm_cluster *lpm_root_node; 
static bool lpm_prediction = true;

module_param_named(lpm_prediction, lpm_prediction, bool, 0664);



static uint32_t bias_hyst;

module_param_named(bias_hyst, bias_hyst, uint, 0664);



struct lpm_history {

	uint32_t resi[MAXSAMPLES];

	int mode[MAXSAMPLES];
@@ -113,19 +109,7 @@ static void cluster_prepare(struct lpm_cluster *cluster, 
static bool sleep_disabled;

module_param_named(sleep_disabled, sleep_disabled, bool, 0664);



#ifdef CONFIG_LPM_SCHED_CPU_BUSY

static u64 get_cpu_last_busy(int cpu)

{

	return sched_get_cpu_last_busy_time(cpu);

}

#else

static u64 get_cpu_last_busy(int cpu)

{

	return 0;

}

#endif



#ifdef CONFIG_LPM_CPU_ISOLATE

#ifdef CONFIG_SCHED_WALT

static bool check_cpu_isolated(int cpu)

{

	return cpu_isolated(cpu);
@@ -442,20 +426,10 @@ static void clear_predict_history(void) 


static void update_history(struct cpuidle_device *dev, int idx);



static inline bool is_cpu_biased(int cpu)

{

	u64 now = sched_clock();

	u64 last = get_cpu_last_busy(cpu);



	if (!last)

		return false;



	return (now - last) < BIAS_HYST;

}



static inline bool lpm_disallowed(s64 sleep_us, int cpu)

{

	if ((sleep_disabled && !check_cpu_isolated(cpu)) || is_cpu_biased(cpu))

	if ((sleep_disabled && !check_cpu_isolated(cpu)) ||

						sched_lpm_disallowed_time(cpu))

		return true;



	if (sleep_us < 0)