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MyungJoo Ham fd0ef7a058 [CPUFREQ] CPUfreq ondemand: update sampling rate without waiting for next sampling 
When a new sampling rate is shorter than the current one, (e.g., 1 sec
--> 10 ms) regardless how short the new one is, the current ondemand
mechanism wait for the previously set timer to be expired.

For example, if the user has just expressed that the sampling rate
should be 10 ms from now and the previous was 1000 ms, the new rate may
become effective 999 ms later, which could be not acceptable for the
user if the user has intended to speed up sampling because the system is
expected to react to CPU load fluctuation quickly from __now__.

In order to address this issue, we need to cancel the previously set
timer (schedule_delayed_work) and reset the timer if resetting timer is
expected to trigger the delayed_work ealier.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
 		2012-02-29 22:24:40 -05:00
..
Kconfig Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-07-25 22:59:39 -07:00
Kconfig.arm [CPUFREQ] Add S3C2416/S3C2450 cpufreq driver 2012-02-29 22:24:39 -05:00
Kconfig.powerpc powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards 2011-07-19 15:13:04 +10:00
Kconfig.x86 Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-05-19 17:55:12 -07:00
Makefile [CPUFREQ] Add S3C2416/S3C2450 cpufreq driver 2012-02-29 22:24:39 -05:00
acpi-cpufreq.c [CPUFREQ] Handle CPUs with different capabilities in acpi-cpufreq 2011-07-13 18:29:49 -04:00
cpufreq-nforce2.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
cpufreq.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2012-01-11 18:53:33 -08:00
cpufreq_conservative.c Merge branch 'sched/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into cputime-tip 2011-12-19 19:23:15 +01:00
cpufreq_ondemand.c [CPUFREQ] CPUfreq ondemand: update sampling rate without waiting for next sampling 2012-02-29 22:24:40 -05:00
cpufreq_performance.c [CPUFREQ] use dynamic debug instead of custom infrastructure 2011-05-04 11:50:57 -04:00
cpufreq_powersave.c [CPUFREQ] use dynamic debug instead of custom infrastructure 2011-05-04 11:50:57 -04:00
cpufreq_stats.c Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core 2012-01-07 12:03:30 -08:00
cpufreq_userspace.c [CPUFREQ] cpufreq:userspace: fix cpu_cur_freq updation 2012-01-06 10:10:53 -05:00
db8500-cpufreq.c [CPUFREQ] db8500: fix build error due to undeclared i variable 2011-11-11 22:28:33 -05:00
e_powersaver.c [CPUFREQ] e_powersaver: Allow user to lower maximum voltage 2011-10-26 17:19:46 -04:00
elanfreq.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
exynos-cpufreq.c [CPUFREQ] EXYNOS: Initialize locking_frequency with initial frequency 2012-02-29 22:24:38 -05:00
exynos4210-cpufreq.c [CPUFREQ] EXYNOS4210: update the name of EXYNOS clock register 2012-02-29 22:24:38 -05:00
freq_table.c [CPUFREQ] use dynamic debug instead of custom infrastructure 2011-05-04 11:50:57 -04:00
gx-suspmod.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
longhaul.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
longhaul.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
longrun.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
maple-cpufreq.c powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards 2011-07-19 15:13:04 +10:00
mperf.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
mperf.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
omap-cpufreq.c cpufreq: OMAP: fixup for omap_device changes, include <linux/module.h> 2011-11-10 10:11:20 -08:00
p4-clockmod.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
pcc-cpufreq.c drivers/cpufreq/pcc-cpufreq.c: avoid NULL pointer dereference 2011-09-14 18:09:38 -07:00
powernow-k6.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
powernow-k7.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
powernow-k7.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
powernow-k8.c [CPUFREQ] powernow-k8: Update copyright, maintainer and documentation information 2012-01-06 10:10:53 -05:00
powernow-k8.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
s3c64xx-cpufreq.c [CPUFREQ] s3c64xx: Fix mis-cherry pick of VDDINT 2012-02-29 22:24:38 -05:00
s3c2416-cpufreq.c [CPUFREQ] Add S3C2416/S3C2450 cpufreq driver 2012-02-29 22:24:39 -05:00
s5pv210-cpufreq.c [CPUFREQ] s5pv210: make needlessly global symbols static 2011-07-13 18:30:00 -04:00
sc520_freq.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-centrino.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-ich.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-lib.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-lib.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-smi.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00