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isolcpus: don't select isolate cpu for non-bind tasks. [1/1]

Browse Source 
PD#SWPL-151292

Problem:
Some tasks have been running in apu before isolating cpu.

Solution:
when tasks were scheduled,if tasks shouldn't be run
on the apu, they will be migrated to other cpus.

Verify:
T5M

Change-Id: I97a91f1a40425a3ab26801de9a6bcb4b19c33019
Signed-off-by: Hanjie Lin <hanjie.lin@amlogic.com>
This commit is contained in:
Hanjie Lin
2024-01-25 19:57:16 +08:00
committed by gerrit autosubmit
parent 6443766f46
commit 318edc8359
3 changed files with 45 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
android/common14-5.15_abi_gki_aarch64_amlogic
+5
View File
@@ -59,3 +59,8 @@
sprint_symbol_no_offset
task_sched_runtime
bpf_trace_run9
# amlogic_debug.ko
__tracepoint_android_rvh_select_task_rq_fair
__traceiter_android_rvh_select_task_rq_fair
drivers/debug/isolcpus.c
+25 -2
View File
@@ -12,12 +12,15 @@
#include <linux/cpuset.h>
#include <linux/sched/isolation.h>
#include <linux/amlogic/gki_module.h>
#include <linux/sched.h>
#include <trace/hooks/sched.h>
static int have_isolcpus;
static int have_aml_isolcpus;
static int have_isolcpus_speedup_boot;
static struct cpumask aml_house_keeping_mask;
static int isolcpus_speedup_boot;
static struct cpumask isolcpus_mask;
#ifdef CONFIG_ARM64
#define REG_0 regs->regs[0]
@@ -66,7 +69,6 @@ __setup("isolcpus=", isolcpus_setup);
static int aml_isolcpus_setup(char *str)
{
struct cpumask isolcpus_mask;
have_aml_isolcpus = 1;
if (cpulist_parse(str, &isolcpus_mask) < 0) {
@@ -81,6 +83,8 @@ static int aml_isolcpus_setup(char *str)
}
__setup("aml_isolcpus=", aml_isolcpus_setup);
extern void rebuild_sched_flag(void);
static int isolcpus_speedup_boot_set(const char *val, const struct kernel_param *kp)
{
int n = 0, ret;
@@ -95,6 +99,7 @@ static int isolcpus_speedup_boot_set(const char *val, const struct kernel_param
//pr_info("isolcpus_speedup_boot=%d\n", isolcpus_speedup_boot);
rebuild_sched_domains();
rebuild_sched_flag();
return 0;
}
@@ -118,6 +123,17 @@ static int isolcpus_speedup_boot_setup(char *str)
}
__setup("isolcpus_speedup_boot=", isolcpus_speedup_boot_setup);
#ifdef CONFIG_ANDROID_VENDOR_HOOKS
static void select_task_rq_hook(void *data, struct task_struct *p, int prev_cpu, int sd_flag,
int wake_flags, int *new_cpu)
{
if (!isolcpus_speedup_boot && cpumask_test_cpu(prev_cpu, &isolcpus_mask) &&
!cpumask_equal((const struct cpumask *)&isolcpus_mask,
(const struct cpumask *)&p->cpus_mask))
*new_cpu = cpumask_last(&aml_house_keeping_mask);
}
#endif
int aml_isolcpus_init(void)
{
int ret;
@@ -144,8 +160,15 @@ int aml_isolcpus_init(void)
}
//if need do really isolcpus, so rebuild domains
if (!isolcpus_speedup_boot)
if (!isolcpus_speedup_boot) {
rebuild_sched_domains();
rebuild_sched_flag();
}
#ifdef CONFIG_ANDROID_VENDOR_HOOKS
register_trace_android_rvh_select_task_rq_fair(select_task_rq_hook, NULL);
register_trace_android_rvh_select_task_rq_rt(select_task_rq_hook, NULL);
#endif
return 0;
}
drivers/debug/sched.c
+15 -10
View File
@@ -590,11 +590,24 @@ static void tick_entry_hook(void *data, struct rq *rq)
}
#endif
int aml_sched_init(void)
void rebuild_sched_flag(void)
{
int cpu, old_flags;
struct sched_domain *sd;
for_each_possible_cpu(cpu) {
for_each_domain(cpu, sd) {
old_flags = sd->flags;
sd->flags &= ~SD_WAKE_AFFINE;
sd->flags |= (SD_BALANCE_WAKE | SD_BALANCE_NEWIDLE);
pr_info("cpu:%d sd:%px flags:%x->%x\n", cpu, sd, old_flags, sd->flags);
}
}
}
EXPORT_SYMBOL(rebuild_sched_flag);
int aml_sched_init(void)
{
#if defined(CONFIG_ANDROID_VENDOR_HOOKS) && defined(CONFIG_FAIR_GROUP_SCHED)
register_trace_android_rvh_select_task_rq_rt(aml_select_rt_nice, NULL);
register_trace_android_rvh_check_preempt_wakeup(aml_check_preempt_wakeup, NULL);
@@ -609,15 +622,7 @@ int aml_sched_init(void)
register_trace_android_rvh_tick_entry(tick_entry_hook, NULL);
register_trace_android_vh_sched_show_task(sched_show_task_hook, NULL);
#endif
for_each_possible_cpu(cpu) {
for_each_domain(cpu, sd) {
old_flags = sd->flags;
sd->flags &= ~SD_WAKE_AFFINE;
sd->flags |= (SD_BALANCE_WAKE | SD_BALANCE_NEWIDLE);
pr_info("cpu:%d sd:%px flags:%x->%x\n", cpu, sd, old_flags, sd->flags);
}
}
rebuild_sched_flag();
return 0;
}