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platform_kernel-5.15
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ANDROID: Add vendor hooks to signal. 

Add vendor hook to get signal for vendor-specific tuning.

Conflicts:
    drivers/android/vendor_hooks.c

Bug: 184898838

Signed-off-by: Zhuguangqing <zhuguangqing@xiaomi.com>
Change-Id: I83a28b0a6eb413976f4c57f2314d008ad792fa0d
(cherry picked from commit d623f1ff724d5cdc0913e020b2a1b562868aa4d8)
This commit is contained in:
Zhuguangqing 2021-03-10 14:56:02 +08:00 committed by Suren Baghdasaryan
parent fd2e5c65ed
commit 4f746c15d7
3 changed files with 22 additions and 1 deletions
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2
drivers/android/vendor_hooks.c
View File

@ -66,6 +66,7 @@
#include <trace/hooks/mmc.h>
#include <trace/hooks/evdev.h>
#include <trace/hooks/ipv4.h>
#include <trace/hooks/signal.h>
/*
* Export tracepoints that act as a bare tracehook (ie: have no trace event
@ -92,6 +93,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_priority_skip);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_set_priority);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_restore_priority);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_wakeup_ilocked);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_send_sig_info);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alter_futex_plist_add);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_wait_start);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_wait_finish);

17
include/trace/hooks/signal.h Normal file
View File

@ -0,0 +1,17 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM signal
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_SIGNAL_H
#include <linux/tracepoint.h>
#include <trace/hooks/vendor_hooks.h>
struct task_struct;
DECLARE_HOOK(android_vh_do_send_sig_info,
TP_PROTO(int sig, struct task_struct *killer, struct task_struct *dst),
TP_ARGS(sig, killer, dst));
#endif /* _TRACE_HOOK_SIGNAL_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

4
kernel/signal.c
View File

@ -56,6 +56,8 @@
#include <asm/cacheflush.h>
#include <asm/syscall.h> /* for syscall_get_* */
#undef CREATE_TRACE_POINTS
#include <trace/hooks/signal.h>
/*
* SLAB caches for signal bits.
*/
@ -1289,7 +1291,7 @@ int do_send_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *p
{
unsigned long flags;
int ret = -ESRCH;
trace_android_vh_do_send_sig_info(sig, current, p);
if (lock_task_sighand(p, &flags)) {
ret = send_signal(sig, info, p, type);
unlock_task_sighand(p, &flags);