tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ANDROID: vendor_hooks: add cpuidle event

Browse Source 
An event that gather the idle state that the cpu attempted to enter and
actually entered is added. Through this, the idle statistics of the cpu
can be obtained and used for vendor specific algorithms or for system
analysis.

Bug: 162980647

Change-Id: I9c2491d524722042e881864488f7b3cf7e903d1e
Signed-off-by: Park Bumgyu <bumgyu.park@samsung.com>
This commit is contained in:
Park Bumgyu
2020-08-20 11:17:23 +09:00
parent 7ab6cf0fec
commit 322f59e742
3 changed files with 29 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/android/vendor_hooks.c
+2
View File
@@ -14,6 +14,7 @@
#include <trace/hooks/rwsem.h>
#include <trace/hooks/futex.h>
#include <trace/hooks/dtask.h>
#include <trace/hooks/cpuidle.h>
/*
* Export tracepoints that act as a bare tracehook (ie: have no trace event
@@ -48,3 +49,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_read_wait_finish);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_write_wait_start);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_write_wait_finish);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sched_show_task);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle);
drivers/cpuidle/cpuidle.c
+3
View File
@@ -23,6 +23,7 @@
#include <linux/suspend.h>
#include <linux/tick.h>
#include <trace/events/power.h>
#include <trace/hooks/cpuidle.h>
#include "cpuidle.h"
@@ -228,6 +229,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
/* Take note of the planned idle state. */
sched_idle_set_state(target_state);
trace_android_vh_cpu_idle(0, index, dev->cpu);
trace_cpu_idle_rcuidle(index, dev->cpu);
time_start = ns_to_ktime(local_clock());
@@ -238,6 +240,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
sched_clock_idle_wakeup_event();
time_end = ns_to_ktime(local_clock());
trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu);
trace_android_vh_cpu_idle(PWR_EVENT_EXIT, entered_state, dev->cpu);
/* The cpu is no longer idle or about to enter idle. */
sched_idle_set_state(NULL);
include/trace/hooks/cpuidle.h
+24
View File
@@ -0,0 +1,24 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM cpuidle
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_CPUIDLE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_CPUIDLE_H
#include <linux/tracepoint.h>
#include <trace/hooks/vendor_hooks.h>
#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_ANDROID_VENDOR_HOOKS)
DECLARE_HOOK(android_vh_cpu_idle,
TP_PROTO(int event, int state, int cpu),
TP_ARGS(event, state, cpu))
#else
#define trace_android_vh_cpu_idle(event, state, cpu)
#endif
#endif /* _TRACE_HOOK_CPUIDLE_H */
/* This part must be outside protection */
#include <trace/define_trace.h>