Rafael J. Wysocki 798282a871 Revert "cpufreq: make sure frequency transitions are serialized" ... Commit 7c30ed5 (cpufreq: make sure frequency transitions are serialized) attempted to serialize frequency transitions by adding checks to the CPUFREQ_PRECHANGE and CPUFREQ_POSTCHANGE notifications. However, it assumed that the notifications will always originate from the driver's .target() callback, but they also can be triggered by cpufreq_out_of_sync() and that leads to warnings like this on some systems: WARNING: CPU: 0 PID: 14543 at drivers/cpufreq/cpufreq.c:317 __cpufreq_notify_transition+0x238/0x260() In middle of another frequency transition accompanied by a call trace similar to this one: [<ffffffff81720daa>] dump_stack+0x46/0x58 [<ffffffff8106534c>] warn_slowpath_common+0x8c/0xc0 [<ffffffff815b8560>] ? acpi_cpufreq_target+0x320/0x320 [<ffffffff81065436>] warn_slowpath_fmt+0x46/0x50 [<ffffffff815b1ec8>] __cpufreq_notify_transition+0x238/0x260 [<ffffffff815b33be>] cpufreq_notify_transition+0x3e/0x70 [<ffffffff815b345d>] cpufreq_out_of_sync+0x6d/0xb0 [<ffffffff815b370c>] cpufreq_update_policy+0x10c/0x160 [<ffffffff815b3760>] ? cpufreq_update_policy+0x160/0x160 [<ffffffff81413813>] cpufreq_set_cur_state+0x8c/0xb5 [<ffffffff814138df>] processor_set_cur_state+0xa3/0xcf [<ffffffff8158e13c>] thermal_cdev_update+0x9c/0xb0 [<ffffffff8159046a>] step_wise_throttle+0x5a/0x90 [<ffffffff8158e21f>] handle_thermal_trip+0x4f/0x140 [<ffffffff8158e377>] thermal_zone_device_update+0x57/0xa0 [<ffffffff81415b36>] acpi_thermal_check+0x2e/0x30 [<ffffffff81415ca0>] acpi_thermal_notify+0x40/0xdc [<ffffffff813e7dbd>] acpi_device_notify+0x19/0x1b [<ffffffff813f8241>] acpi_ev_notify_dispatch+0x41/0x5c [<ffffffff813e3fbe>] acpi_os_execute_deferred+0x25/0x32 [<ffffffff81081060>] process_one_work+0x170/0x4a0 [<ffffffff81082121>] worker_thread+0x121/0x390 [<ffffffff81082000>] ? manage_workers.isra.20+0x170/0x170 [<ffffffff81088fe0>] kthread+0xc0/0xd0 [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0 [<ffffffff8173582c>] ret_from_fork+0x7c/0xb0 [<ffffffff81088f20>] ? flush_kthread_worker+0xb0/0xb0 For this reason, revert commit 7c30ed5 along with the fix 266c13d (cpufreq: Fix serialization of frequency transitions) on top of it and we will revisit the serialization problem later. Reported-by: Alessandro Bono <alessandro.bono@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2013-09-10 02:54:50 +02:00
..
acpi-cpufreq.c	acpi-cpufreq: Use cpufreq_freq_attr_rw to define the cpb attribute	2013-08-14 22:24:22 +02:00
amd_freq_sensitivity.c	cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor	2013-04-10 13:19:26 +02:00
arm_big_little_dt.c	cpufreq: arm_big_little: remove device tree parsing for cpu nodes	2013-08-21 10:29:55 +01:00
arm_big_little.c	cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases	2013-06-24 18:18:58 +05:30
arm_big_little.h	cpufreq: ARM big LITTLE: Move cpu_to_cluster() to arm_big_little.h	2013-05-12 14:04:15 +02:00
at32ap-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
blackfin-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
cpufreq_conservative.c	cpufreq: governors: Remove duplicate check of target freq in supported range	2013-08-28 22:03:02 +02:00
cpufreq_governor.c	cpufreq: Don't use smp_processor_id() in preemptible context	2013-08-29 22:19:23 +02:00
cpufreq_governor.h	cpufreq: governor: Fix typos in comments	2013-08-28 22:04:54 +02:00
cpufreq_ondemand.c	cpufreq: governors: Remove duplicate check of target freq in supported range	2013-08-28 22:03:02 +02:00
cpufreq_performance.c	cpufreq: Clean up header files included in the core	2013-08-07 23:34:09 +02:00
cpufreq_powersave.c	cpufreq: Clean up header files included in the core	2013-08-07 23:34:09 +02:00
cpufreq_stats.c	cpufreq: Fix wrong time unit conversion	2013-09-10 02:49:46 +02:00
cpufreq_userspace.c	cpufreq: Fix minor formatting issues	2013-06-21 01:06:34 +02:00
cpufreq-cpu0.c	Merge branch 'cpu_of_node' of git://linux-arm.org/linux-skn into pm-cpufreq-next	2013-08-23 00:57:19 +02:00
cpufreq-nforce2.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
cpufreq.c	Revert "cpufreq: make sure frequency transitions are serialized"	2013-09-10 02:54:50 +02:00
cris-artpec3-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
cris-etraxfs-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
davinci-cpufreq.c	cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases	2013-06-24 18:18:58 +05:30
dbx500-cpufreq.c	cpufreq: delete __cpuinit usage from all cpufreq files	2013-07-14 19:36:57 -04:00
e_powersaver.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
elanfreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
exynos4x12-cpufreq.c	arm-soc: cleanups	2013-02-21 14:58:40 -08:00
exynos4210-cpufreq.c	arm-soc: cleanups	2013-02-21 14:58:40 -08:00
exynos5250-cpufreq.c	arm-soc: cleanups	2013-02-21 14:58:40 -08:00
exynos5440-cpufreq.c	cpufreq: exynos5440: Fix to skip when new frequency same as current	2013-08-12 12:00:18 +05:30
exynos-cpufreq.c	Merge branch 'cpufreq-fixes' of git://git.linaro.org/people/vireshk/linux into pm-cpufreq	2013-08-14 22:22:57 +02:00
exynos-cpufreq.h	cpufreq: fix EXYNOS drivers selection	2013-08-12 12:00:21 +05:30
freq_table.c	cpufreq: Clean up header files included in the core	2013-08-07 23:34:09 +02:00
gx-suspmod.c	cpufreq / gx: Fix gx_detect_chipset() __init attribute location	2013-08-14 22:24:23 +02:00
highbank-cpufreq.c	cpufreq: highbank-cpufreq: remove device tree parsing for cpu nodes	2013-08-21 10:29:54 +01:00
ia64-acpi-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
imx6q-cpufreq.c	Merge branch 'cpufreq-fixes' of git://git.linaro.org/people/vireshk/linux into pm-cpufreq	2013-08-27 02:37:54 +02:00
integrator-cpufreq.c	cpufreq: integrator: move cpufreq driver to drivers/cpufreq	2013-04-08 13:02:31 +02:00
intel_pstate.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
Kconfig	cpufreq: Fix incorrect dependecies for ARM SA11xx drivers	2013-05-12 14:04:16 +02:00
Kconfig.arm	cpufreq: fix EXYNOS drivers selection	2013-08-12 12:00:21 +05:30
Kconfig.powerpc	Merge branch 'pm-cpufreq-assorted' into pm-cpufreq	2013-06-27 21:46:45 +02:00
Kconfig.x86	cpufreq: X86_AMD_FREQ_SENSITIVITY: select CPU_FREQ_TABLE	2013-06-18 13:53:11 +05:30
kirkwood-cpufreq.c	Merge branch 'cpu_of_node' of git://linux-arm.org/linux-skn into pm-cpufreq-next	2013-08-23 00:57:19 +02:00
longhaul.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
longhaul.h	cpufreq: delete __cpuinit usage from all cpufreq files	2013-07-14 19:36:57 -04:00
longrun.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
loongson2_cpufreq.c	Merge back earlier 'pm-cpufreq' material	2013-08-14 22:21:16 +02:00
Makefile	cpufreq: Remove unused APERF/MPERF support	2013-07-26 01:06:43 +02:00
maple-cpufreq.c	Merge branch 'cpu_of_node' of git://linux-arm.org/linux-skn into pm-cpufreq-next	2013-08-23 00:57:19 +02:00
omap-cpufreq.c	cpufreq: delete __cpuinit usage from all cpufreq files	2013-07-14 19:36:57 -04:00
p4-clockmod.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
pasemi-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
pcc-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
pmac32-cpufreq.c	Merge branch 'cpu_of_node' of git://linux-arm.org/linux-skn into pm-cpufreq-next	2013-08-23 00:57:19 +02:00
pmac64-cpufreq.c	Merge branch 'cpu_of_node' of git://linux-arm.org/linux-skn into pm-cpufreq-next	2013-08-23 00:57:19 +02:00
powernow-k6.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
powernow-k7.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
powernow-k7.h	[CPUFREQ] Move x86 drivers to drivers/cpufreq/	2011-05-19 18:51:07 -04:00
powernow-k8.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
powernow-k8.h	cpufreq: Remove support for hardware P-state chips from powernow-k8	2012-09-09 22:05:30 +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	cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq	2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
ppc_cbe_cpufreq.h	cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq	2013-04-10 13:19:26 +02:00
ppc-corenet-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
pxa2xx-cpufreq.c	cpufreq / pxa2xx: Fix pxa_cpufreq_init_voltages() __init attribute location	2013-08-14 22:24:23 +02:00
pxa3xx-cpufreq.c	pxa3xx-cpufreq.c: Avoid using ARRAY_AND_SIZE(e) as a function argument	2013-08-14 22:24:23 +02:00
s3c24xx-cpufreq-debugfs.c	cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq	2013-05-20 23:04:28 +09:00
s3c24xx-cpufreq.c	cpufreq / s3c24xx: Fix s3c_cpufreq_initclks() __init attribute location	2013-08-14 22:24:24 +02:00
s3c64xx-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
s3c2410-cpufreq.c	cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq	2013-05-20 23:04:28 +09:00
s3c2412-cpufreq.c	cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq	2013-05-20 23:04:28 +09:00
s3c2416-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
s3c2440-cpufreq.c	cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq	2013-05-20 23:04:28 +09:00
s5pv210-cpufreq.c	cpufreq: Notify all policy->cpus in cpufreq_notify_transition()	2013-04-02 15:24:00 +02:00
sa1100-cpufreq.c	cpufreq: sa11x0: move cpufreq driver to drivers/cpufreq	2013-04-10 13:19:24 +02:00
sa1110-cpufreq.c	cpufreq: sa11x0: move cpufreq driver to drivers/cpufreq	2013-04-10 13:19:24 +02:00
sc520_freq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
sh-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
sparc-us2e-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
sparc-us3-cpufreq.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
spear-cpufreq.c	cpufreq: spear-cpufreq: remove device tree parsing for cpu nodes	2013-08-21 10:29:54 +01:00
speedstep-centrino.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
speedstep-ich.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
speedstep-lib.c	cpufreq: Add support for x86 cpuinfo auto loading v4	2012-01-26 16:49:06 -08:00
speedstep-lib.h	[CPUFREQ] Move x86 drivers to drivers/cpufreq/	2011-05-19 18:51:07 -04:00
speedstep-smi.c	cpufreq: Drop the owner field from struct cpufreq_driver	2013-08-10 03:24:47 +02:00
tegra-cpufreq.c	cpufreq: tegra: fix the wrong clock name	2013-08-23 21:58:28 +05:30
unicore2-cpufreq.c	cpufreq: unicore2: Staticize local symbol	2013-08-14 22:24:24 +02:00