Peter Zijlstra 5e3c1afd45 sched/x86/tsc: Initialize multiplier to 0 ...

Since we keep the clock value linearly continuous on frequency change,
make sure the initial multiplier is 0, such that our initial value is 0.
Without this we compute the initial value at whatever the TSC has
managed to reach since power-on.

Reported-and-Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Fixes: 20d1c86a57 ("sched/clock, x86: Rewrite cyc2ns() to avoid the need to disable IRQs")
Cc: lenb@kernel.org
Cc: rjw@rjwysocki.net
Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Cc: rui.zhang@intel.com
Cc: jacob.jun.pan@linux.intel.com
Cc: Mike Galbraith <bitbucket@online.de>
Cc: hpa@zytor.com
Cc: paulmck@linux.vnet.ibm.com
Cc: John Stultz <john.stultz@linaro.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: dyoung@redhat.com
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140123094804.GP30183@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2014-01-23 14:48:36 +01:00

..

alpha

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

arc

arch: Re-sort some Kbuild files to hopefully help avoid some conflicts

2014-01-13 21:56:54 -08:00

arm

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 11:34:26 -08:00

arm64

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:23:08 -08:00

avr32

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

blackfin

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

c6x

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-11-19 10:40:00 -08:00

cris

arch: Re-sort some Kbuild files to hopefully help avoid some conflicts

2014-01-13 21:56:54 -08:00

frv

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

hexagon

arch: Re-sort some Kbuild files to hopefully help avoid some conflicts

2014-01-13 21:56:54 -08:00

ia64

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:23:08 -08:00

m32r

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

m68k

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:42:08 -08:00

metag

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:23:08 -08:00

microblaze

arch: Re-sort some Kbuild files to hopefully help avoid some conflicts

2014-01-13 21:56:54 -08:00

mips

Merge branch 'core-stackprotector-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:26:31 -08:00

mn10300

arch: Re-sort some Kbuild files to hopefully help avoid some conflicts

2014-01-13 21:56:54 -08:00

openrisc

Merge tag 'for-3.13' of git://git.openrisc.net/~jonas/linux

2013-11-15 14:26:38 -08:00

parisc

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:23:08 -08:00

powerpc

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:28:30 -08:00

s390

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:23:08 -08:00

score

arch: Re-sort some Kbuild files to hopefully help avoid some conflicts

2014-01-13 21:56:54 -08:00

sh

Merge branch 'core-stackprotector-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:26:31 -08:00

sparc

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-01-20 10:23:08 -08:00

tile

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

um

um: Build always with -mcmodel=large on 64bit

2013-12-01 13:06:51 +01:00

unicore32

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

x86

sched/x86/tsc: Initialize multiplier to 0

2014-01-23 14:48:36 +01:00

xtensa

arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h

2014-01-12 10:37:15 +01:00

.gitignore

…

Kconfig

stackprotector: Introduce CONFIG_CC_STACKPROTECTOR_STRONG

2013-12-20 09:38:40 +01:00