diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-10-29 17:26:06 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-31 03:11:08 +0400 |
| commit | 7dbf694db6ac7c759599316d50d7050efcbd512a (patch) | |
| tree | fe10dc555181b52a8fd567dcf819d5a447bb1f37 /drivers | |
| parent | e0a261a207fb5bcbc6cc5db3b51a96d9cbe9b97e (diff) | |
| download | linux-7dbf694db6ac7c759599316d50d7050efcbd512a.tar.xz | |
cpufreq: distinguish drivers that do asynchronous notifications
There are few special cases like exynos5440 which doesn't send POSTCHANGE
notification from their ->target() routine and call some kind of bottom halves
for doing this work, work/tasklet/etc.. From which they finally send POSTCHANGE
notification.
Its better if we distinguish them from other cpufreq drivers in some way so that
core can handle them specially. So this patch introduces another flag:
CPUFREQ_ASYNC_NOTIFICATION, which will be set by such drivers.
This also changes exynos5440-cpufreq.c and powernow-k8 in order to set this
flag.
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cpufreq/exynos5440-cpufreq.c | 2 | ||||
| -rw-r--r-- | drivers/cpufreq/powernow-k8.c | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c index 1bf9b060d522..76bef8b078cb 100644 --- a/drivers/cpufreq/exynos5440-cpufreq.c +++ b/drivers/cpufreq/exynos5440-cpufreq.c @@ -312,7 +312,7 @@ static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy) } static struct cpufreq_driver exynos_driver = { - .flags = CPUFREQ_STICKY, + .flags = CPUFREQ_STICKY | CPUFREQ_ASYNC_NOTIFICATION, .verify = cpufreq_generic_frequency_table_verify, .target_index = exynos_target, .get = exynos_getspeed, diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 62a1ce47d3df..0023c7d40a51 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1204,6 +1204,7 @@ out: } static struct cpufreq_driver cpufreq_amd64_driver = { + .flags = CPUFREQ_ASYNC_NOTIFICATION, .verify = cpufreq_generic_frequency_table_verify, .target_index = powernowk8_target, .bios_limit = acpi_processor_get_bios_limit, |