Anton Blanchard 9a45a9407c powerpc/perf: power_pmu_start restores incorrect values, breaking frequency events ... perf on POWER stopped working after commit e050e3f0a7 (perf: Fix broken interrupt rate throttling). That patch exposed a bug in the POWER perf_events code. Since the PMCs count upwards and take an exception when the top bit is set, we want to write 0x80000000 - left in power_pmu_start. We were instead programming in left which effectively disables the counter until we eventually hit 0x80000000. This could take seconds or longer. With the patch applied I get the expected number of samples: SAMPLE events: 9948 Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <stable@kernel.org>		2012-02-16 16:24:35 +11:00
..
boot	powerpc/85xx: Add dr_mode property in USB nodes	2012-01-18 08:05:42 -06:00
configs	powerpc: Remove legacy iSeries from ppc64_defconfig	2012-02-16 16:15:08 +11:00
include/asm	powerpc/pseries/eeh: Fix crash when error happens during device probe	2012-02-14 15:01:39 +11:00
kernel	powerpc/perf: power_pmu_start restores incorrect values, breaking frequency events	2012-02-16 16:24:35 +11:00
kvm	Merge branch 'kvm-updates/3.3' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2012-01-10 09:57:11 -08:00
lib	powerpc: POWER7 optimised copy_to_user/copy_from_user using VMX	2011-12-19 14:40:40 +11:00
math-emu
mm	cpumask: update setup_node_to_cpumask_map() comments	2012-01-12 20:13:11 -08:00
net
oprofile
platforms	powerpc/pseries/eeh: Fix crash when error happens during device probe	2012-02-14 15:01:39 +11:00
sysdev	powerpc/fsl/pci: Fix PCIe fixup regression	2012-02-16 16:15:03 +11:00
xmon
Kconfig	lib: use generic pci_iomap on all architectures	2012-01-10 18:04:27 -08:00
Kconfig.debug
Makefile	powerpc: Process dynamic relocations for kernel	2011-12-20 10:21:08 -05:00
relocs_check.pl	powerpc: Process dynamic relocations for kernel	2011-12-20 10:21:08 -05:00