Peter Zijlstra 9e35ad388b perf_counter: Rework the perf counter disable/enable ... The current disable/enable mechanism is: token = hw_perf_save_disable(); ... /* do bits */ ... hw_perf_restore(token); This works well, provided that the use nests properly. Except we don't. x86 NMI/INT throttling has non-nested use of this, breaking things. Therefore provide a reference counter disable/enable interface, where the first disable disables the hardware, and the last enable enables the hardware again. [ Impact: refactor, simplify the PMU disable/enable logic ] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-05-15 09:47:02 +02:00
..
boot	Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge	2009-04-28 10:47:16 +10:00
configs	Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6 into merge	2009-04-22 13:02:09 +10:00
include/asm	perf_counter: powerpc: allow use of limited-function counters	2009-04-29 14:58:35 +02:00
kernel	perf_counter: Rework the perf counter disable/enable	2009-05-15 09:47:02 +02:00
kvm
lib
math-emu
mm	Merge branch 'linus' into perfcounters/core	2009-04-29 14:47:05 +02:00
oprofile
platforms	Merge branch 'linus' into perfcounters/core	2009-04-29 14:47:05 +02:00
sysdev	Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6 into merge	2009-04-22 13:02:09 +10:00
xmon
Kconfig	powerpc: Allow 256kB pages with SHMEM	2009-04-15 15:23:53 +10:00
Kconfig.debug
Makefile