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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-15 07:48:18 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-15 07:48:18 +0200 |
commit | 0429fbc0bdc297d64188483ba029a23773ae07b0 (patch) | |
tree | 67de46978c90f37540dd6ded1db20eb53a569030 /drivers/cpuidle | |
parent | 6929c358972facf2999f8768815c40dd88514fc2 (diff) | |
parent | 513d1a2884a49654f368b5fa25ef186e976bdada (diff) | |
download | linux-stable-0429fbc0bdc297d64188483ba029a23773ae07b0.tar.gz linux-stable-0429fbc0bdc297d64188483ba029a23773ae07b0.tar.bz2 linux-stable-0429fbc0bdc297d64188483ba029a23773ae07b0.zip |
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull percpu consistent-ops changes from Tejun Heo:
"Way back, before the current percpu allocator was implemented, static
and dynamic percpu memory areas were allocated and handled separately
and had their own accessors. The distinction has been gone for many
years now; however, the now duplicate two sets of accessors remained
with the pointer based ones - this_cpu_*() - evolving various other
operations over time. During the process, we also accumulated other
inconsistent operations.
This pull request contains Christoph's patches to clean up the
duplicate accessor situation. __get_cpu_var() uses are replaced with
with this_cpu_ptr() and __this_cpu_ptr() with raw_cpu_ptr().
Unfortunately, the former sometimes is tricky thanks to C being a bit
messy with the distinction between lvalues and pointers, which led to
a rather ugly solution for cpumask_var_t involving the introduction of
this_cpu_cpumask_var_ptr().
This converts most of the uses but not all. Christoph will follow up
with the remaining conversions in this merge window and hopefully
remove the obsolete accessors"
* 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (38 commits)
irqchip: Properly fetch the per cpu offset
percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t -fix
ia64: sn_nodepda cannot be assigned to after this_cpu conversion. Use __this_cpu_write.
percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t
Revert "powerpc: Replace __get_cpu_var uses"
percpu: Remove __this_cpu_ptr
clocksource: Replace __this_cpu_ptr with raw_cpu_ptr
sparc: Replace __get_cpu_var uses
avr32: Replace __get_cpu_var with __this_cpu_write
blackfin: Replace __get_cpu_var uses
tile: Use this_cpu_ptr() for hardware counters
tile: Replace __get_cpu_var uses
powerpc: Replace __get_cpu_var uses
alpha: Replace __get_cpu_var
ia64: Replace __get_cpu_var uses
s390: cio driver &__get_cpu_var replacements
s390: Replace __get_cpu_var uses
mips: Replace __get_cpu_var uses
MIPS: Replace __get_cpu_var uses in FPU emulator.
arm: Replace __this_cpu_ptr with raw_cpu_ptr
...
Diffstat (limited to 'drivers/cpuidle')
-rw-r--r-- | drivers/cpuidle/governors/ladder.c | 4 | ||||
-rw-r--r-- | drivers/cpuidle/governors/menu.c | 6 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c index 044ee0df5871..06b57c4c4d80 100644 --- a/drivers/cpuidle/governors/ladder.c +++ b/drivers/cpuidle/governors/ladder.c @@ -66,7 +66,7 @@ static inline void ladder_do_selection(struct ladder_device *ldev, static int ladder_select_state(struct cpuidle_driver *drv, struct cpuidle_device *dev) { - struct ladder_device *ldev = &__get_cpu_var(ladder_devices); + struct ladder_device *ldev = this_cpu_ptr(&ladder_devices); struct ladder_device_state *last_state; int last_residency, last_idx = ldev->last_state_idx; int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY); @@ -170,7 +170,7 @@ static int ladder_enable_device(struct cpuidle_driver *drv, */ static void ladder_reflect(struct cpuidle_device *dev, int index) { - struct ladder_device *ldev = &__get_cpu_var(ladder_devices); + struct ladder_device *ldev = this_cpu_ptr(&ladder_devices); if (index > 0) ldev->last_state_idx = index; } diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 34db2fb3ef1e..710a233b9b0d 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -289,7 +289,7 @@ again: */ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) { - struct menu_device *data = &__get_cpu_var(menu_devices); + struct menu_device *data = this_cpu_ptr(&menu_devices); int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY); int i; unsigned int interactivity_req; @@ -372,7 +372,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) */ static void menu_reflect(struct cpuidle_device *dev, int index) { - struct menu_device *data = &__get_cpu_var(menu_devices); + struct menu_device *data = this_cpu_ptr(&menu_devices); data->last_state_idx = index; if (index >= 0) data->needs_update = 1; @@ -385,7 +385,7 @@ static void menu_reflect(struct cpuidle_device *dev, int index) */ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) { - struct menu_device *data = &__get_cpu_var(menu_devices); + struct menu_device *data = this_cpu_ptr(&menu_devices); int last_idx = data->last_state_idx; struct cpuidle_state *target = &drv->states[last_idx]; unsigned int measured_us; |