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ANDROID: Add vendor hooks when syscall prctl finished

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Add vendor hook when syscall prctl finished for vendor-specific tuning.

Bug: 181819699

Signed-off-by: Frankie Chang <frankie.chang@mediatek.com>
Change-Id: Ica42d80ab4b540045330e9c5b211e0e814eed0ff
(cherry picked from commit d150b26653e7a3d15383a09384aace140b537ff4)
This commit is contained in:
Frankie Chang
2021-01-13 10:45:58 +08:00
parent 7d91e4ee75
commit 583b91c3ea
3 changed files with 22 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
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@@ -30,6 +30,7 @@
#include <trace/hooks/ftrace_dump.h>
#include <trace/hooks/ufshcd.h>
#include <trace/hooks/cgroup.h>
#include <trace/hooks/sys.h>
/*
* Export tracepoints that act as a bare tracehook (ie: have no trace event
@@ -116,3 +117,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_update_sysfs);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_send_command);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ufs_compl_command);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cgroup_set_task);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_syscall_prctl_finished);

17
include/trace/hooks/sys.h Normal file
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@@ -0,0 +1,17 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM sys
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_SYS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_SYS_H
#include <linux/tracepoint.h>
#include <trace/hooks/vendor_hooks.h>
struct task_struct;
DECLARE_HOOK(android_vh_syscall_prctl_finished,
TP_PROTO(int option, struct task_struct *task),
TP_ARGS(option, task));
#endif
#include <trace/define_trace.h>

3
kernel/sys.c
View File

@@ -76,6 +76,8 @@
#include "uid16.h"
#include <trace/hooks/sys.h>
#ifndef SET_UNALIGN_CTL
# define SET_UNALIGN_CTL(a, b) (-EINVAL)
#endif
@@ -2690,6 +2692,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
error = -EINVAL;
break;
}
trace_android_vh_syscall_prctl_finished(option, me);
return error;
}