wonderful-mobile/exynos-linux-stable
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gaming_control: Remove task kill check

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In case task_struct was locked out, we can't check its cmdline
If we do, we'll get a soft lockup

Background and top-app check is enough

Signed-off-by: Diep Quynh <remilia.1505@gmail.com>
This commit is contained in:
Diep Quynh 2019-03-19 12:40:20 +07:00 • committed by Mustafa Gökmen
parent 609163c324
commit 75f9b626ee
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GPG key ID: 3204D8100CFF21ED
3 changed files with 1 additions and 13 deletions
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5
drivers/misc/gaming_control.c
View file

@ -27,7 +27,6 @@
#define GAMING_CONTROL_VERSION "0.2"
#define TASK_STARTED 1
#define TASK_KILLED 0
char games_list[GAME_LIST_LENGTH] = {0};
int gaming_mode;
@ -86,10 +85,6 @@ void game_option(struct task_struct *tsk, enum game_opts opts)
case GAME_PAUSE:
gaming_mode = 0;
break;
case GAME_KILLED:
tsk->app_state = TASK_KILLED;
gaming_mode = 0;
break;
default:
break;
}

3
include/linux/gaming_control.h
View file

@ -21,8 +21,7 @@
enum game_opts {
GAME_START,
GAME_RUNNING,
GAME_PAUSE,
GAME_KILLED
GAME_PAUSE
};
#ifdef CONFIG_GAMING_CONTROL

6
kernel/signal.c
View file

@ -40,9 +40,6 @@
#define CREATE_TRACE_POINTS
#include <trace/events/signal.h>
/* Gaming control */
#include <linux/gaming_control.h>
#include <asm/param.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@ -1208,9 +1205,6 @@ int do_send_sig_info(int sig, struct siginfo *info, struct task_struct *p,
unsigned long flags;
int ret = -ESRCH;
if ((sig == SIGKILL || sig == SIGTERM || sig == SIGABRT || sig == SIGQUIT))
game_option(p, GAME_KILLED);
if (lock_task_sighand(p, &flags)) {
ret = send_signal(sig, info, p, group);
unlock_task_sighand(p, &flags);