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Commit 4b22a632 authored by Frankie Chang's avatar Frankie Chang Committed by Todd Kjos
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ANDROID: cgroup: Add vendor hook to the cgroup 



Add a vendor hook after attaching a task to a cgroup to 
recognize the group_id for performance tuning

Bug: 181917687

Signed-off-by: default avatarFrankie Chang <frankie.chang@mediatek.com>
Change-Id: I603afa3d893dd575a7dcb97f83bd9eacb8315bab
(cherry picked from commit bed1e2a75b0000d99a00177272b93e5c8430308b)
parent 47c864ea

drivers/android/vendor_hooks.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <trace/hooks/minidump.h>

#include <trace/hooks/minidump.h>

#include <trace/hooks/wqlockup.h>

#include <trace/hooks/wqlockup.h>

#include <trace/hooks/sysrqcrash.h>

#include <trace/hooks/sysrqcrash.h>

#include <trace/hooks/cgroup.h>





/*

/*

 * Export tracepoints that act as a bare tracehook (ie: have no trace event

 * Export tracepoints that act as a bare tracehook (ie: have no trace event
@@ -69,3 +70,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sysrq_crash); 
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_find_busiest_group);

EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_find_busiest_group);

EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_map_util_freq);

EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_map_util_freq);

EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_em_pd_energy);

EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_em_pd_energy);

EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cgroup_set_task);

include/trace/hooks/cgroup.h

0 → 100644
+17 −0
Original line number Original line Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#undef TRACE_SYSTEM

#define TRACE_SYSTEM cgroup

#undef TRACE_INCLUDE_PATH

#define TRACE_INCLUDE_PATH trace/hooks

#if !defined(_TRACE_HOOK_CGROUP_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_HOOK_CGROUP_H

#include <linux/tracepoint.h>

#include <trace/hooks/vendor_hooks.h>



struct task_struct;

DECLARE_HOOK(android_vh_cgroup_set_task,

	TP_PROTO(int ret, struct task_struct *task),

	TP_ARGS(ret, task));

#endif



#include <trace/define_trace.h>

kernel/cgroup/cgroup-v1.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/fs_parser.h>

#include <linux/fs_parser.h>





#include <trace/events/cgroup.h>

#include <trace/events/cgroup.h>

#include <trace/hooks/cgroup.h>





#define cg_invalf(fc, fmt, ...) invalf(fc, fmt, ## __VA_ARGS__)

#define cg_invalf(fc, fmt, ...) invalf(fc, fmt, ## __VA_ARGS__)
@@ -522,6 +523,7 @@ static ssize_t __cgroup1_procs_write(struct kernfs_open_file *of, 
		goto out_finish;

		goto out_finish;





	ret = cgroup_attach_task(cgrp, task, threadgroup);

	ret = cgroup_attach_task(cgrp, task, threadgroup);

	trace_android_vh_cgroup_set_task(ret, task);





out_finish:

out_finish:

	cgroup_procs_write_finish(task);

	cgroup_procs_write_finish(task);