110 lines
2.1 KiB
C
Executable file
110 lines
2.1 KiB
C
Executable file
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2019 MediaTek Inc.
|
|
*/
|
|
|
|
#include <linux/spinlock.h>
|
|
#include <linux/time.h>
|
|
#include <mt-plat/perf_common.h>
|
|
#include <perf_tracker.h>
|
|
#include <linux/cpu.h>
|
|
#include <linux/topology.h>
|
|
#ifdef CONFIG_MTK_CORE_CTL
|
|
#include <mt-plat/core_ctl.h>
|
|
#endif
|
|
|
|
static u64 checked_timestamp;
|
|
static bool long_trace_check_flag;
|
|
static DEFINE_SPINLOCK(check_lock);
|
|
static int perf_common_init;
|
|
#ifdef CONFIG_MTK_PERF_TRACKER
|
|
int cluster_nr = -1;
|
|
#endif
|
|
|
|
static inline bool perf_do_check(u64 wallclock)
|
|
{
|
|
bool do_check = false;
|
|
unsigned long flags;
|
|
|
|
/* check interval */
|
|
spin_lock_irqsave(&check_lock, flags);
|
|
if ((s64)(wallclock - checked_timestamp)
|
|
>= (s64)(2 * NSEC_PER_MSEC)) {
|
|
checked_timestamp = wallclock;
|
|
long_trace_check_flag = !long_trace_check_flag;
|
|
do_check = true;
|
|
}
|
|
spin_unlock_irqrestore(&check_lock, flags);
|
|
|
|
return do_check;
|
|
}
|
|
|
|
bool hit_long_check(void)
|
|
{
|
|
bool do_check = false;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&check_lock, flags);
|
|
if (long_trace_check_flag)
|
|
do_check = true;
|
|
spin_unlock_irqrestore(&check_lock, flags);
|
|
return do_check;
|
|
}
|
|
|
|
void perf_common(u64 wallclock)
|
|
{
|
|
long mm_available = -1, mm_free = -1;
|
|
|
|
if (!perf_do_check(wallclock))
|
|
return;
|
|
|
|
#ifdef CONFIG_MTK_CORE_CTL
|
|
/* period is 8ms */
|
|
if (hit_long_check())
|
|
core_ctl_tick(wallclock);
|
|
#endif
|
|
|
|
if (unlikely(!perf_common_init))
|
|
return;
|
|
|
|
perf_tracker(wallclock, mm_available, mm_free);
|
|
}
|
|
|
|
static struct attribute *perf_attrs[] = {
|
|
#ifdef CONFIG_MTK_PERF_TRACKER
|
|
&perf_tracker_enable_attr.attr,
|
|
#endif
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group perf_attr_group = {
|
|
.attrs = perf_attrs,
|
|
};
|
|
|
|
static int init_perf_common(void)
|
|
{
|
|
int ret = 0;
|
|
struct kobject *kobj = NULL;
|
|
|
|
perf_common_init = 1;
|
|
#ifdef CONFIG_MTK_PERF_TRACKER
|
|
cluster_nr = arch_nr_clusters();
|
|
|
|
if (unlikely(cluster_nr <= 0 || cluster_nr > 3))
|
|
cluster_nr = 3;
|
|
#endif
|
|
|
|
kobj = kobject_create_and_add("perf", &cpu_subsys.dev_root->kobj);
|
|
|
|
if (kobj) {
|
|
ret = sysfs_create_group(kobj, &perf_attr_group);
|
|
if (ret)
|
|
kobject_put(kobj);
|
|
else
|
|
kobject_uevent(kobj, KOBJ_ADD);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
late_initcall_sync(init_perf_common);
|