linux/arch
James Hogan c6ac1e6eda metag: perf: add missing prev_count updates
The prev_count needs setting when changing the counter value, otherwise
the calculated delta will be wrong, which for frequency sampling
(dynamic period sampling) results in sampling at too high a frequency.

For non-interrupting performance counters it should also be cleared when
enabling the counter since the write to the PERF_COUNT register will
clear the perf counter.

This also includes a minor change to remove the u64 cast from the
metag_pmu->write() call as metag_pmu->write() takes a u32 anyway, and in
any case GCC is smart enough to optimise away the cast.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
2013-03-15 13:20:03 +00:00
..
alpha alpha: boot: fix build breakage introduced by system.h disintegration 2013-03-08 15:05:34 -08:00
arc ARC: split elf.h into uapi and export it for userspace 2013-02-27 20:00:26 +05:30
arm ARM: 7668/1: fix memset-related crashes caused by recent GCC (4.7.2) optimizations 2013-03-07 16:14:22 +00:00
arm64 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2013-03-02 08:34:06 -08:00
avr32 arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
blackfin Merge branch 'timer/cleanup' into late/mvebu2 2013-02-28 18:54:15 +01:00
c6x Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
cris Merge branch 'timer/cleanup' into late/mvebu2 2013-02-28 18:54:15 +01:00
frv arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
h8300 arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
hexagon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
ia64 fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
m32r Merge branch 'timer/cleanup' into late/mvebu2 2013-02-28 18:54:15 +01:00
m68k Merge branch 'timer/cleanup' into late/mvebu2 2013-02-28 18:54:15 +01:00
metag metag: perf: add missing prev_count updates 2013-03-15 13:20:03 +00:00
microblaze arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
mips Merge git://www.linux-watchdog.org/linux-watchdog 2013-03-03 10:23:29 -08:00
mn10300 arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
openrisc arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
parisc Merge branch 'fixes-for-3.9-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2013-03-03 12:57:38 -08:00
powerpc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2013-03-09 16:51:13 -08:00
s390 fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
score arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
sh hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
sparc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2013-03-02 08:34:06 -08:00
tile tile: properly use COMPAT_SYSCALL_DEFINEx 2013-03-04 13:37:32 -05:00
um
unicore32 arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
x86 x86: Do not try to sync identity map for non-mapped pages 2013-03-07 13:23:28 -08:00
xtensa arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS 2013-02-27 19:10:23 -08:00
.gitignore
Kconfig ImgTec Meta architecture changes for v3.9-rc1 2013-03-03 12:06:09 -08:00