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

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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: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This commit is contained in:
Satya Durga Srinivasu Prabhala 2020-01-15 14:30:57 -08:00
commit 756c560b6e
1 changed files with 3 additions and 29 deletions
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32
drivers/cpuidle/lpm-levels.c
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@ -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)