Merge branches 'perf-urgent-for-linus' and 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf events: Fix ring_buffer_wakeup() brown paperbag bug
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix select_idle_sibling() regression in selecting an idle SMT sibling
MAINTAINERS: Update tip.git related git trees
diff --git a/MAINTAINERS b/MAINTAINERS
index b9db108f..855afd4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3101,6 +3101,7 @@
HIGH-RESOLUTION TIMERS, CLOCKEVENTS, DYNTICKS
M: Thomas Gleixner <tglx@linutronix.de>
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
S: Maintained
F: Documentation/timers/
F: kernel/hrtimer.c
@@ -3610,7 +3611,7 @@
IRQ SUBSYSTEM
M: Thomas Gleixner <tglx@linutronix.de>
S: Maintained
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git irq/core
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
F: kernel/irq/
ISAPNP
@@ -4098,7 +4099,7 @@
LOCKDEP AND LOCKSTAT
M: Peter Zijlstra <peterz@infradead.org>
M: Ingo Molnar <mingo@redhat.com>
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core/locking
S: Maintained
F: Documentation/lockdep*.txt
F: Documentation/lockstat.txt
@@ -5086,6 +5087,7 @@
M: Paul Mackerras <paulus@samba.org>
M: Ingo Molnar <mingo@elte.hu>
M: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
S: Supported
F: kernel/events/*
F: include/linux/perf_event.h
@@ -5165,6 +5167,7 @@
POSIX CLOCKS and TIMERS
M: Thomas Gleixner <tglx@linutronix.de>
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
S: Supported
F: fs/timerfd.c
F: include/linux/timer*
@@ -5680,6 +5683,7 @@
TIMEKEEPING, NTP
M: John Stultz <johnstul@us.ibm.com>
M: Thomas Gleixner <tglx@linutronix.de>
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
S: Supported
F: include/linux/clocksource.h
F: include/linux/time.h
@@ -5704,6 +5708,7 @@
SCHEDULER
M: Ingo Molnar <mingo@elte.hu>
M: Peter Zijlstra <peterz@infradead.org>
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
S: Maintained
F: kernel/sched*
F: include/linux/sched.h
@@ -6631,7 +6636,7 @@
M: Steven Rostedt <rostedt@goodmis.org>
M: Frederic Weisbecker <fweisbec@gmail.com>
M: Ingo Molnar <mingo@redhat.com>
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git perf/core
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
S: Maintained
F: Documentation/trace/ftrace.txt
F: arch/*/*/*/ftrace.h
@@ -7381,7 +7386,7 @@
M: Ingo Molnar <mingo@redhat.com>
M: "H. Peter Anvin" <hpa@zytor.com>
M: x86@kernel.org
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/core
S: Maintained
F: Documentation/x86/
F: arch/x86/
diff --git a/kernel/events/core.c b/kernel/events/core.c
index d3b9df5..58690af 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -3558,9 +3558,13 @@
rcu_read_lock();
rb = rcu_dereference(event->rb);
- list_for_each_entry_rcu(event, &rb->event_list, rb_entry) {
+ if (!rb)
+ goto unlock;
+
+ list_for_each_entry_rcu(event, &rb->event_list, rb_entry)
wake_up_all(&event->waitq);
- }
+
+unlock:
rcu_read_unlock();
}
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index a78ed27..8a39fa3 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -2352,13 +2352,11 @@
if (!smt && (sd->flags & SD_SHARE_CPUPOWER))
continue;
- if (!(sd->flags & SD_SHARE_PKG_RESOURCES)) {
- if (!smt) {
- smt = 1;
- goto again;
- }
+ if (smt && !(sd->flags & SD_SHARE_CPUPOWER))
break;
- }
+
+ if (!(sd->flags & SD_SHARE_PKG_RESOURCES))
+ break;
sg = sd->groups;
do {
@@ -2378,6 +2376,10 @@
sg = sg->next;
} while (sg != sd->groups);
}
+ if (!smt) {
+ smt = 1;
+ goto again;
+ }
done:
rcu_read_unlock();
