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sched/walt: Improve the scheduler

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This change is for general scheduler improvement.

Change-Id: I33e9ec890f8b54d673770d5d02dba489a8e08ce7
Signed-off-by: Sai Harshini Nimmala <snimmala@codeaurora.org>
[satyap@codeaurora.org: port to 5.4 and resolve trivial merge conflicts]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This commit is contained in:
Sai Harshini Nimmala
2019-11-20 17:21:15 -08:00
committed by Satya Durga Srinivasu Prabhala
parent e673c734f3
commit 44a9fe8ad9
4 changed files with 8 additions and 7 deletions
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2
include/linux/sched.h
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@@ -832,7 +832,7 @@ struct task_struct {
struct list_head grp_list; struct list_head grp_list;
u64 cpu_cycles; u64 cpu_cycles;
bool misfit; bool misfit;
u8 unfilter; u32 unfilter;
#endif #endif
#ifdef CONFIG_CGROUP_SCHED #ifdef CONFIG_CGROUP_SCHED

2
include/linux/sched/sysctl.h
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@@ -43,7 +43,7 @@ extern unsigned int __weak sysctl_sched_min_task_util_for_boost;
extern unsigned int __weak sysctl_sched_min_task_util_for_colocation; extern unsigned int __weak sysctl_sched_min_task_util_for_colocation;
extern unsigned int __weak sysctl_sched_asym_cap_sibling_freq_match_pct; extern unsigned int __weak sysctl_sched_asym_cap_sibling_freq_match_pct;
extern unsigned int __weak sysctl_sched_coloc_downmigrate_ns; extern unsigned int __weak sysctl_sched_coloc_downmigrate_ns;
extern unsigned int __weak sysctl_sched_task_unfilter_nr_windows; extern unsigned int __weak sysctl_sched_task_unfilter_period;
extern unsigned int __weak sysctl_sched_busy_hyst_enable_cpus; extern unsigned int __weak sysctl_sched_busy_hyst_enable_cpus;
extern unsigned int __weak sysctl_sched_busy_hyst; extern unsigned int __weak sysctl_sched_busy_hyst;
extern unsigned int __weak sysctl_sched_coloc_busy_hyst_enable_cpus; extern unsigned int __weak sysctl_sched_coloc_busy_hyst_enable_cpus;

4
include/trace/events/sched.h
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@@ -1019,7 +1019,7 @@ TRACE_EVENT(sched_task_util,
__field(bool, is_rtg) __field(bool, is_rtg)
__field(bool, rtg_skip_min) __field(bool, rtg_skip_min)
__field(int, start_cpu) __field(int, start_cpu)
__field(int, unfilter) __field(u32, unfilter)
__field(unsigned long, cpus_allowed) __field(unsigned long, cpus_allowed)
__field(int, task_boost) __field(int, task_boost)
), ),
@@ -1054,7 +1054,7 @@ TRACE_EVENT(sched_task_util,
#endif #endif
), ),
TP_printk("pid=%d comm=%s util=%lu prev_cpu=%d candidates=%#lx best_energy_cpu=%d sync=%d need_idle=%d fastpath=%d placement_boost=%d latency=%llu stune_boosted=%d is_rtg=%d rtg_skip_min=%d start_cpu=%d unfilter=%d affinity=%lx task_boost=%d", TP_printk("pid=%d comm=%s util=%lu prev_cpu=%d candidates=%#lx best_energy_cpu=%d sync=%d need_idle=%d fastpath=%d placement_boost=%d latency=%llu stune_boosted=%d is_rtg=%d rtg_skip_min=%d start_cpu=%d unfilter=%u affinity=%lx task_boost=%d",
__entry->pid, __entry->comm, __entry->util, __entry->prev_cpu, __entry->pid, __entry->comm, __entry->util, __entry->prev_cpu,
__entry->candidates, __entry->best_energy_cpu, __entry->sync, __entry->candidates, __entry->best_energy_cpu, __entry->sync,
__entry->need_idle, __entry->fastpath, __entry->placement_boost, __entry->need_idle, __entry->fastpath, __entry->placement_boost,

7
kernel/sysctl.c
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@@ -148,6 +148,7 @@ static int two_hundred_fifty_five = 255;
const int sched_user_hint_max = 1000; const int sched_user_hint_max = 1000;
static unsigned int ns_per_sec = NSEC_PER_SEC; static unsigned int ns_per_sec = NSEC_PER_SEC;
static unsigned int one_hundred_thousand = 100000; static unsigned int one_hundred_thousand = 100000;
static unsigned int two_hundred_million = 200000000;
#endif #endif
/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */ /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
@@ -471,13 +472,13 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_douintvec_minmax, .proc_handler = proc_douintvec_minmax,
}, },
{ {
.procname = "sched_task_unfilter_nr_windows", .procname = "sched_task_unfilter_period",
.data = &sysctl_sched_task_unfilter_nr_windows, .data = &sysctl_sched_task_unfilter_period,
.maxlen = sizeof(unsigned int), .maxlen = sizeof(unsigned int),
.mode = 0644, .mode = 0644,
.proc_handler = proc_dointvec_minmax, .proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ONE, .extra1 = SYSCTL_ONE,
.extra2 = &two_hundred_fifty_five, .extra2 = &two_hundred_million,
}, },
{ {
.procname = "sched_busy_hysteresis_enable_cpus", .procname = "sched_busy_hysteresis_enable_cpus",