The patch titled
Subject: sys_prctl(): simplify arg2 judgment when calling PR_SET_TIMERSLACK
has been added to the -mm tree. Its filename is
sys_prctl-simplify-arg2-judgment-when-calling-pr_set_timerslack.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/sys_prctl-simplify-arg2-judgment-when-calling-pr_set_timerslack.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/sys_prctl-simplify-arg2-judgment-when-calling-pr_set_timerslack.patch
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------------------------------------------------------
From: Yang Xu <xuyang2018.jy@xxxxxxxxxxxxxx>
Subject: sys_prctl(): simplify arg2 judgment when calling PR_SET_TIMERSLACK
arg2 will never < 0, for its type is 'unsigned long'. So negative
judgment is meaningless.
Link: http://lkml.kernel.org/r/1563852653-2382-1-git-send-email-xuyang2018.jy@xxxxxxxxxxxxxx
Signed-off-by: Yang Xu <xuyang2018.jy@xxxxxxxxxxxxxx>
Cc: John Stultz <john.stultz@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sys.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/kernel/sys.c~sys_prctl-simplify-arg2-judgment-when-calling-pr_set_timerslack
+++ a/kernel/sys.c
@@ -2372,11 +2372,11 @@ SYSCALL_DEFINE5(prctl, int, option, unsi
error = current->timer_slack_ns;
break;
case PR_SET_TIMERSLACK:
- if (arg2 <= 0)
+ if (arg2)
+ current->timer_slack_ns = arg2;
+ else
current->timer_slack_ns =
current->default_timer_slack_ns;
- else
- current->timer_slack_ns = arg2;
break;
case PR_MCE_KILL:
if (arg4 | arg5)
_
Patches currently in -mm which might be from xuyang2018.jy@xxxxxxxxxxxxxx are
sys_prctl-simplify-arg2-judgment-when-calling-pr_set_timerslack.patch
