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sched: Add snapshot of Window Assisted Load Tracking (WALT)

Browse source 
This snapshot is taken from msm-4.19 as of commit 5debecbe7195
("trace: filter out spurious preemption and IRQs disable traces").

Change-Id: I8fab4084971baadcaa037f40ab549fc073a4b1ea
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This commit is contained in:
Satya Durga Srinivasu Prabhala 2019-09-09 15:32:44 -07:00
commit 64b577b9cc
24 changed files with 2050 additions and 92 deletions
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219
kernel/sysctl.c
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@ -64,6 +64,7 @@
#include <linux/binfmts.h>
#include <linux/sched/sysctl.h>
#include <linux/sched/coredump.h>
#include <linux/sched/stat.h>
#include <linux/kexec.h>
#include <linux/bpf.h>
#include <linux/mount.h>
@ -126,6 +127,7 @@ static int sixty = 60;
#endif
static int __maybe_unused neg_one = -1;
static int __maybe_unused two = 2;
static int __maybe_unused four = 4;
static unsigned long zero_ul;
@ -140,7 +142,12 @@ static int ten_thousand = 10000;
static int six_hundred_forty_kb = 640 * 1024;
#endif
#ifdef CONFIG_SCHED_WALT
static int neg_three = -3;
static int three = 3;
static int two_hundred_fifty_five = 255;
const int sched_user_hint_max = 1000;
static unsigned int ns_per_sec = NSEC_PER_SEC;
static unsigned int one_hundred_thousand = 100000;
#endif
/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
@ -231,6 +238,10 @@ static int proc_dostring_coredump(struct ctl_table *table, int write,
#endif
static int proc_dopipe_max_size(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
#ifdef CONFIG_SCHED_WALT
static int proc_douintvec_minmax_schedhyst(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
#endif
#ifdef CONFIG_MAGIC_SYSRQ
/* Note: sysrq code uses its own private copy */
@ -328,6 +339,172 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec,
},
#ifdef CONFIG_SCHED_WALT
{
.procname = "sched_user_hint",
.data = &sysctl_sched_user_hint,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = walt_proc_user_hint_handler,
.extra1 = SYSCTL_ZERO,
.extra2 = (void *)&sched_user_hint_max,
},
{
.procname = "sched_window_stats_policy",
.data = &sysctl_sched_window_stats_policy,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = &four,
},
{
.procname = "sched_cpu_high_irqload",
.data = &sysctl_sched_cpu_high_irqload,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "sched_group_upmigrate",
.data = &sysctl_sched_group_upmigrate_pct,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = walt_proc_group_thresholds_handler,
.extra1 = &sysctl_sched_group_downmigrate_pct,
},
{
.procname = "sched_group_downmigrate",
.data = &sysctl_sched_group_downmigrate_pct,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = walt_proc_group_thresholds_handler,
.extra1 = SYSCTL_ZERO,
.extra2 = &sysctl_sched_group_upmigrate_pct,
},
{
.procname = "sched_boost",
.data = &sysctl_sched_boost,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = sched_boost_handler,
.extra1 = &neg_three,
.extra2 = &three,
},
{
.procname = "sched_conservative_pl",
.data = &sysctl_sched_conservative_pl,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "sched_walt_rotate_big_tasks",
.data = &sysctl_sched_walt_rotate_big_tasks,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "sched_min_task_util_for_boost",
.data = &sysctl_sched_min_task_util_for_boost,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = &one_thousand,
},
{
.procname = "sched_min_task_util_for_colocation",
.data = &sysctl_sched_min_task_util_for_colocation,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = &one_thousand,
},
{
.procname = "sched_asym_cap_sibling_freq_match_pct",
.data = &sysctl_sched_asym_cap_sibling_freq_match_pct,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ONE,
.extra2 = &one_hundred,
},
{
.procname = "sched_coloc_downmigrate_ns",
.data = &sysctl_sched_coloc_downmigrate_ns,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax,
},
{
.procname = "sched_task_unfilter_nr_windows",
.data = &sysctl_sched_task_unfilter_nr_windows,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ONE,
.extra2 = &two_hundred_fifty_five,
},
{
.procname = "sched_busy_hysteresis_enable_cpus",
.data = &sysctl_sched_busy_hyst_enable_cpus,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax_schedhyst,
.extra1 = SYSCTL_ZERO,
.extra2 = &two_hundred_fifty_five,
},
{
.procname = "sched_busy_hyst_ns",
.data = &sysctl_sched_busy_hyst,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax_schedhyst,
.extra1 = SYSCTL_ZERO,
.extra2 = &ns_per_sec,
},
{
.procname = "sched_coloc_busy_hysteresis_enable_cpus",
.data = &sysctl_sched_coloc_busy_hyst_enable_cpus,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax_schedhyst,
.extra1 = SYSCTL_ZERO,
.extra2 = &two_hundred_fifty_five,
},
{
.procname = "sched_coloc_busy_hyst_ns",
.data = &sysctl_sched_coloc_busy_hyst,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax_schedhyst,
.extra1 = SYSCTL_ZERO,
.extra2 = &ns_per_sec,
},
{
.procname = "sched_coloc_busy_hyst_max_ms",
.data = &sysctl_sched_coloc_busy_hyst_max_ms,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax_schedhyst,
.extra1 = SYSCTL_ZERO,
.extra2 = &one_hundred_thousand,
},
{
.procname = "sched_ravg_window_nr_ticks",
.data = &sysctl_sched_ravg_window_nr_ticks,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = sched_ravg_window_handler,
},
#endif
#ifdef CONFIG_SCHED_DEBUG
{
.procname = "sched_min_granularity_ns",
@ -2874,6 +3051,19 @@ static int proc_dostring_coredump(struct ctl_table *table, int write,
}
#endif
#ifdef CONFIG_SCHED_WALT
static int proc_douintvec_minmax_schedhyst(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int ret = proc_douintvec_minmax(table, write, buffer, lenp, ppos);
if (!ret && write)
sched_update_hyst_times();
return ret;
}
#endif
static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos,
@ -3341,6 +3531,29 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
return err;
}
static int do_proc_douintvec_rwin(bool *negp, unsigned long *lvalp,
int *valp, int write, void *data)
{
if (write) {
if (*lvalp == 0 || *lvalp == 2 || *lvalp == 5)
*valp = *lvalp;
else
return -EINVAL;
} else {
*negp = false;
*lvalp = *valp;
}
return 0;
}
int proc_douintvec_ravg_window(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
return do_proc_dointvec(table, write, buffer, lenp, ppos,
do_proc_douintvec_rwin, NULL);
}
#else /* CONFIG_PROC_SYSCTL */
int proc_dostring(struct ctl_table *table, int write,
@ -3410,6 +3623,12 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
return -ENOSYS;
}
int proc_douintvec_ravg_window(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
#endif /* CONFIG_PROC_SYSCTL */
#if defined(CONFIG_SYSCTL)