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sched: vts: vts_kernel_proc_file_api_test [2/2]

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PD#SWPL-124519

Problem:
vts_kernel_proc_file_api_test module 3 fail

Solution:
add 3 proc file interfaces 'sched_latency_ns',
'sched_wakeup_granularity_ns',
'sched_tunable_scaling'

Verify:
SC2

Change-Id: I514cea758d73825252a14cb7c39e1f233d075f2e
Signed-off-by: qiankun.wang <qiankun.wang@amlogic.com>
This commit is contained in:
qiankun.wang
2023-05-19 15:26:35 +08:00
committed by Dongjin Kim
parent c8bfffefff
commit 220a32f34b
3 changed files with 79 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
include/linux/sched/sysctl.h
View File

@@ -26,6 +26,11 @@ int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
enum { sysctl_hung_task_timeout_secs = 0 };
#endif
#if IS_ENABLED(CONFIG_AMLOGIC_BGKI_SCHED_SYSCTL)
extern unsigned int sysctl_sched_latency;
extern unsigned int sysctl_sched_min_granularity;
extern unsigned int sysctl_sched_wakeup_granularity;
#endif
extern unsigned int sysctl_sched_child_runs_first;
enum sched_tunable_scaling {
@@ -35,6 +40,13 @@ enum sched_tunable_scaling {
SCHED_TUNABLESCALING_END,
};
#if IS_ENABLED(CONFIG_AMLOGIC_BGKI_SCHED_SYSCTL)
extern enum sched_tunable_scaling sysctl_sched_tunable_scaling;
int sched_proc_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length,
loff_t *ppos);
#endif
/*
* control realtime throttling:
*

25
kernel/sched/fair.c
View File

@@ -644,6 +644,31 @@ int sched_update_scaling(void)
return 0;
}
#if IS_ENABLED(CONFIG_AMLOGIC_BGKI_SCHED_SYSCTL)
int sched_proc_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
unsigned int factor = get_update_sysctl_factor();
if (ret || !write)
return ret;
sched_nr_latency = DIV_ROUND_UP(sysctl_sched_latency,
sysctl_sched_min_granularity);
#define WRT_SYSCTL(name) \
(normalized_sysctl_##name = sysctl_##name / (factor))
WRT_SYSCTL(sched_min_granularity);
WRT_SYSCTL(sched_latency);
WRT_SYSCTL(sched_wakeup_granularity);
#undef WRT_SYSCTL
return 0;
}
#endif
#endif
/*

42
kernel/sysctl.c
View File

@@ -183,6 +183,17 @@ static enum sysctl_writes_mode sysctl_writes_strict = SYSCTL_WRITES_STRICT;
int sysctl_legacy_va_layout;
#endif
#if IS_ENABLED(CONFIG_AMLOGIC_BGKI_SCHED_SYSCTL)
static int min_sched_granularity_ns = 100000; /* 100 usecs */
static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
static int min_wakeup_granularity_ns; /* 0 usecs */
static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */
#ifdef CONFIG_SMP
static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE;
static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END - 1;
#endif /* CONFIG_SMP */
#endif
#ifdef CONFIG_COMPACTION
static int min_extfrag_threshold;
static int max_extfrag_threshold = 1000;
@@ -1854,7 +1865,38 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = sched_rr_handler,
},
#if IS_ENABLED(CONFIG_AMLOGIC_BGKI_SCHED_SYSCTL)
{
.procname = "sched_latency_ns",
.data = &sysctl_sched_latency,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = sched_proc_update_handler,
.extra1 = &min_sched_granularity_ns,
.extra2 = &max_sched_granularity_ns,
},
{
.procname = "sched_wakeup_granularity_ns",
.data = &sysctl_sched_wakeup_granularity,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = sched_proc_update_handler,
.extra1 = &min_wakeup_granularity_ns,
.extra2 = &max_wakeup_granularity_ns,
},
#endif
#ifdef CONFIG_SMP
#if IS_ENABLED(CONFIG_AMLOGIC_BGKI_SCHED_SYSCTL)
{
.procname = "sched_tunable_scaling",
.data = &sysctl_sched_tunable_scaling,
.maxlen = sizeof(enum sched_tunable_scaling),
.mode = 0644,
.proc_handler = sched_proc_update_handler,
.extra1 = &min_sched_tunable_scaling,
.extra2 = &max_sched_tunable_scaling,
},
#endif
{
.procname = "sched_pelt_multiplier",
.data = &sysctl_sched_pelt_multiplier,