Rafael J. Wysocki 9a15fb2c79 cpufreq: Drop the 'initialized' field from struct cpufreq_governor ... The 'initialized' field in struct cpufreq_governor is only used by the conservative governor (as a usage counter) and the way that happens is far from straightforward and arguably incorrect. Namely, the value of 'initialized' is checked by cpufreq_dbs_governor_init() and cpufreq_dbs_governor_exit() and the results of those checks are passed (as the second argument) to the ->init() and ->exit() callbacks in struct dbs_governor. Those callbacks are only implemented by the ondemand and conservative governors and ondemand doesn't use their second argument at all. In turn, the conservative governor uses it to decide whether or not to either register or unregister a transition notifier. That whole mechanism is not only unnecessarily convoluted, but also racy, because the 'initialized' field of struct cpufreq_governor is updated in cpufreq_init_governor() and cpufreq_exit_governor() under policy->rwsem which doesn't help if one of these functions is run twice in parallel for different policies (which isn't impossible in principle), for example. Instead of it, add a proper usage counter to the conservative governor and update it from cs_init() and cs_exit() which is guaranteed to be non-racy, as those functions are only called under gov_dbs_data_mutex which is global. With that in place, drop the 'initialized' field from struct cpufreq_governor as it is not used any more. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>		2016-06-02 23:24:39 +02:00
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acpi-cpufreq.c	cpufreq: ACPI: Remove freq_table from acpi_cpufreq_data	2016-04-09 01:54:31 +02:00
amd_freq_sensitivity.c	cpufreq: governor: Make governor private data per-policy	2016-03-09 14:41:08 +01:00
arm_big_little_dt.c	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00
arm_big_little.c	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00
arm_big_little.h	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00
at32ap-cpufreq.c	cpufreq: at32ap: don't declare local variable as static	2014-04-07 14:31:33 +02:00
blackfin-cpufreq.c	blackfin-cpufreq: Mark cpu_set_cclk() as static	2015-12-28 01:51:36 +01:00
cppc_cpufreq.c	cpufreq: ACPI / CPPC: Add module support for cppc_cpufreq driver	2016-04-25 15:59:35 +02:00
cpufreq_conservative.c	cpufreq: Drop the 'initialized' field from struct cpufreq_governor	2016-06-02 23:24:39 +02:00
cpufreq_governor_attr_set.c	cpufreq: governor: Move abstract gov_attr_set code to seperate file	2016-04-02 01:09:01 +02:00
cpufreq_governor.c	cpufreq: Drop the 'initialized' field from struct cpufreq_governor	2016-06-02 23:24:39 +02:00
cpufreq_governor.h	cpufreq: Drop the 'initialized' field from struct cpufreq_governor	2016-06-02 23:24:39 +02:00
cpufreq_ondemand.c	cpufreq: Drop the 'initialized' field from struct cpufreq_governor	2016-06-02 23:24:39 +02:00
cpufreq_ondemand.h	cpufreq: governor: Relocate definitions of tuners structures	2016-03-09 14:41:09 +01:00
cpufreq_performance.c	cpufreq: governor: Get rid of governor events	2016-06-02 23:24:15 +02:00
cpufreq_powersave.c	cpufreq: governor: Get rid of governor events	2016-06-02 23:24:15 +02:00
cpufreq_stats.c	cpufreq: stats: drop unnecessary locking	2015-01-23 23:06:45 +01:00
cpufreq_userspace.c	cpufreq: governor: Get rid of governor events	2016-06-02 23:24:15 +02:00
cpufreq-dt-platdev.c	cpufreq: tango: Use generic platdev driver	2016-05-05 01:36:57 +02:00
cpufreq-dt.c	cpufreq: dt: Kill platform-data	2016-04-28 15:22:43 +02:00
cpufreq-nforce2.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
cpufreq.c	cpufreq: Drop the 'initialized' field from struct cpufreq_governor	2016-06-02 23:24:39 +02:00
cris-artpec3-cpufreq.c	cpufreq: create another field .flags in cpufreq_frequency_table	2014-04-07 14:43:50 +02:00
cris-etraxfs-cpufreq.c	cpufreq: create another field .flags in cpufreq_frequency_table	2014-04-07 14:43:50 +02:00
davinci-cpufreq.c	cpufreq: drop owner assignment from platform_drivers	2014-10-20 16:20:24 +02:00
dbx500-cpufreq.c	cpufreq: drop owner assignment from platform_drivers	2014-10-20 16:20:24 +02:00
e_powersaver.c	cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for built-in or module	2016-04-27 22:42:34 +02:00
elanfreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
exynos5440-cpufreq.c	PM / OPP: Prefix exported opp routines with dev_pm_opp_	2015-09-15 02:03:16 +02:00
freq_table.c	cpufreq: Allow drivers to enable boost support after registering driver	2015-08-07 03:25:23 +02:00
gx-suspmod.c	cpufreq: gx-suspmod: Fix two typos in two comments	2015-06-15 15:46:15 +02:00
highbank-cpufreq.c	Merge branch 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2014-10-21 11:21:19 -07:00
ia64-acpi-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
imx6q-cpufreq.c	Merge branch 'pm-opp'	2015-11-02 00:54:37 +01:00
integrator-cpufreq.c	cpufreq: integrator: Fix module autoload for OF platform driver	2015-09-25 23:29:35 +02:00
intel_pstate.c	intel_pstate: Simplify conditional in intel_pstate_set_policy()	2016-05-18 02:26:33 +02:00
Kconfig	Merge branch 'pm-cpufreq-sched' into pm-cpufreq	2016-05-11 22:48:20 +02:00
Kconfig.arm	cpufreq: hisilicon: Use generic platdev driver	2016-04-25 16:18:24 +02:00
Kconfig.powerpc	cpufreq: qoriq: rename the driver	2015-03-18 22:35:16 +01:00
Kconfig.x86	cpufreq: intel_pstate: Enforce _PPC limits	2016-04-28 01:01:39 +02:00
kirkwood-cpufreq.c	cpufreq: drop owner assignment from platform_drivers	2014-10-20 16:20:24 +02:00
longhaul.c	Power management material for v4.7-rc1	2016-05-16 19:17:22 -07:00
longhaul.h	cpufreq: delete __cpuinit usage from all cpufreq files	2013-07-14 19:36:57 -04:00
longrun.c	cpufreq: add new routine cpufreq_verify_within_cpu_limits()	2013-10-16 00:50:23 +02:00
loongson1-cpufreq.c	CPUFREQ: Loongson1: Replace goto out with return in ls1x_cpufreq_probe()	2016-05-13 14:02:08 +02:00
loongson2_cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
Makefile	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2016-05-19 10:02:26 -07:00
maple-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
mt8173-cpufreq.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2016-05-26 09:23:43 -07:00
mvebu-cpufreq.c	cpufreq: mvebu: Move cpufreq code into drivers/cpufreq/	2016-04-28 15:22:43 +02:00
omap-cpufreq.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
p4-clockmod.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
pasemi-cpufreq.c	cpufreq: Use cpufreq_for_each_* macros for frequency table iteration	2014-04-30 00:06:21 +02:00
pcc-cpufreq.c	cpufreq: pcc-cpufreq: update default value of cpuinfo_transition_latency	2015-12-10 00:17:03 +01:00
pmac32-cpufreq.c	powerpc updates for 4.7	2016-05-20 10:12:41 -07:00
pmac64-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
powernow-k6.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
powernow-k7.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
powernow-k7.h	[CPUFREQ] Move x86 drivers to drivers/cpufreq/	2011-05-19 18:51:07 -04:00
powernow-k8.c	ACPI / processor: Drop an unused argument of a cleanup routine	2015-07-22 22:11:16 +02:00
powernow-k8.h	cpufreq: powernow-k8: Suppress checkpatch warnings	2014-05-17 01:27:01 +02:00
powernv-cpufreq.c	cpufreq: powernv: del_timer_sync when global and local pstate are equal	2016-05-11 02:28:00 +02:00
ppc_cbe_cpufreq_pervasive.c	cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq	2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq_pmi.c	drivers/cpufreq: make ppc_cbe_cpufreq_pmi driver explicitly non-modular	2016-04-11 20:30:43 +10:00
ppc_cbe_cpufreq.c	cpufreq: Use cpufreq_for_each_* macros for frequency table iteration	2014-04-30 00:06:21 +02:00
ppc_cbe_cpufreq.h	cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for built-in or module	2016-04-27 22:42:34 +02:00
pxa2xx-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
pxa3xx-cpufreq.c	cpufreq: Remove cpufreq_generic_exit()	2014-03-12 01:06:00 +01:00
qoriq-cpufreq.c	cpufreq: qoriq: Fix cooling device registration issue during suspend	2016-04-25 16:07:02 +02:00
s3c24xx-cpufreq-debugfs.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
s3c24xx-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
s3c64xx-cpufreq.c	cpufreq: Use cpufreq_for_each_* macros for frequency table iteration	2014-04-30 00:06:21 +02:00
s3c2410-cpufreq.c	cpufreq: s3c24xx: Remove some dead code	2014-07-19 04:24:59 +09:00
s3c2412-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
s3c2416-cpufreq.c	cpufreq: s3c: remove incorrect __init annotations	2015-02-19 06:36:53 +01:00
s3c2440-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
s5pv210-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
sa1100-cpufreq.c	cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag	2014-01-06 14:17:25 +01:00
sa1110-cpufreq.c	cpufreq: sa1110: set memory type for h3600	2014-07-16 14:30:17 +02:00
sc520_freq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
scpi-cpufreq.c	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00
sfi-cpufreq.c	cpufreq: sfi: use kmemdup rather than duplicating its implementation	2015-09-01 15:51:15 +02:00
sh-cpufreq.c	cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}	2014-03-26 16:41:41 +01:00
sparc-us2e-cpufreq.c	cpufreq: add 'freq_table' in struct cpufreq_policy	2014-03-12 01:06:00 +01:00
sparc-us3-cpufreq.c	cpufreq: add 'freq_table' in struct cpufreq_policy	2014-03-12 01:06:00 +01:00
spear-cpufreq.c	cpufreq: drop owner assignment from platform_drivers	2014-10-20 16:20:24 +02:00
speedstep-centrino.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
speedstep-ich.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
speedstep-lib.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
speedstep-lib.h	[CPUFREQ] Move x86 drivers to drivers/cpufreq/	2011-05-19 18:51:07 -04:00
speedstep-smi.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
sti-cpufreq.c	cpufreq: st: enable selective initialization based on the platform	2016-04-28 15:25:56 +02:00
tegra20-cpufreq.c	cpufreq: tegra20: remove superfluous CONFIG_PM ifdefs	2015-09-26 03:00:57 +02:00
tegra124-cpufreq.c	cpufreq: tegra124: No need of setting platform-data	2016-04-09 01:12:09 +02:00
unicore2-cpufreq.c	cpufreq: unicore32: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO	2014-04-21 23:42:27 +02:00
vexpress-spc-cpufreq.c	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00