Anton Blanchard 49f936fe90 powerpc/perf: power_pmu_start restores incorrect values, breaking frequency events ... commit 9a45a9407c upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-02-29 16:33:39 -08:00
..
boot	powerpc/p1022ds: fix audio-related properties in the device tree	2011-06-22 06:14:54 -05:00
configs	powerpc/pseries: remove duplicate SCSI_BNX2_ISCSI in pseries_defconfig	2011-06-29 09:28:52 +10:00
include/asm	powerpc/time: Handle wrapping of decrementer	2012-01-12 11:35:02 -08:00
kernel	powerpc/perf: power_pmu_start restores incorrect values, breaking frequency events	2012-02-29 16:33:39 -08:00
kvm	Merge branch 'kvm-updates/2.6.40' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2011-05-23 08:42:08 -07:00
lib	powerpc: Copy down exception vectors after feature fixups	2011-11-21 14:31:25 -08:00
math-emu	powerpc/85xx: Fix SPE float to integer conversion failure	2011-03-15 13:48:15 -05:00
mm	powerpc: Fix deadlock in icswx code	2011-11-11 09:37:11 -08:00
oprofile	powerpc/oprofile: Handle events that raise an exception without overflowing	2011-05-26 13:38:57 +10:00
platforms	powerpc: Fix unpaired probe_hcall_entry and probe_hcall_exit	2012-01-12 11:35:03 -08:00
sysdev	arch/powerpc/sysdev/fsl_rio.c: correct IECSR register clear value	2011-10-03 11:39:46 -07:00
xmon	powerpc: Remove call sites of MSG_ALL_BUT_SELF	2011-05-19 14:30:46 +10:00
Kconfig	arch: remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT}	2011-05-26 17:12:38 -07:00
Kconfig.debug	lib: consolidate DEBUG_STACK_USAGE option	2011-05-25 08:39:54 -07:00
Makefile	powerpc: Fix typo in uImage target	2010-08-24 15:26:32 +10:00
relocs_check.pl