[tip:sched/core] sched: __sched_setscheduler: Read the RLIMIT_RTPRIO value lockless
in [Kernel]
|
Prev: ASoC: Fix overflow bug in SOC_DOUBLE_R_SX_TLV
Next: [tip:sched/core] sched: Remove the obsolete exit_state/signal hacks
From: tip-bot for Oleg Nesterov on 18 Jun 2010 06:30 Commit-ID: a44702e8858a071aa0f2365113ea4a2e51c8b575 Gitweb: http://git.kernel.org/tip/a44702e8858a071aa0f2365113ea4a2e51c8b575 Author: Oleg Nesterov <oleg(a)redhat.com> AuthorDate: Fri, 11 Jun 2010 01:09:44 +0200 Committer: Ingo Molnar <mingo(a)elte.hu> CommitDate: Fri, 18 Jun 2010 10:46:55 +0200 sched: __sched_setscheduler: Read the RLIMIT_RTPRIO value lockless __sched_setscheduler() takes lock_task_sighand() to access task->signal. This is not needed since ea6d290c, ->signal can't go away. Signed-off-by: Oleg Nesterov <oleg(a)redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra(a)chello.nl> LKML-Reference: <20100610230944.GA25903(a)redhat.com> Signed-off-by: Ingo Molnar <mingo(a)elte.hu> --- kernel/sched.c | 8 ++------ 1 files changed, 2 insertions(+), 6 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index 132950b..b4427cc 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -4600,12 +4600,8 @@ recheck: */ if (user && !capable(CAP_SYS_NICE)) { if (rt_policy(policy)) { - unsigned long rlim_rtprio; - - if (!lock_task_sighand(p, &flags)) - return -ESRCH; - rlim_rtprio = task_rlimit(p, RLIMIT_RTPRIO); - unlock_task_sighand(p, &flags); + unsigned long rlim_rtprio = + task_rlimit(p, RLIMIT_RTPRIO); /* can't set/change the rt policy */ if (policy != p->policy && !rlim_rtprio) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |