Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Thomas writes:
"A single fix for a missing sanity check when a pinned event is tried
to be read on the wrong CPU due to a legit event scheduling failure."
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Add sanity check to deal with pinned event failure
+6
+6
kernel/events/core.c
+6
kernel/events/core.c
···
3935
3935
goto out;
3936
3936
}
3937
3937
3938
+
/* If this is a pinned event it must be running on this CPU */
3939
+
if (event->attr.pinned && event->oncpu != smp_processor_id()) {
3940
+
ret = -EBUSY;
3941
+
goto out;
3942
+
}
3943
+
3938
3944
/*
3939
3945
* If the event is currently on this CPU, its either a per-task event,
3940
3946
* or local to this CPU. Furthermore it means its ACTIVE (otherwise