The patch titled
lib: percpu_counter_set
has been added to the -mm tree. Its filename is
lib-percpu_counter_set.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lib: percpu_counter_set
From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Provide a method to set a percpu counter to a specified value.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/percpu_counter.h | 6 ++++++
lib/percpu_counter.c | 14 ++++++++++++++
2 files changed, 20 insertions(+)
diff -puN include/linux/percpu_counter.h~lib-percpu_counter_set include/linux/percpu_counter.h
--- a/include/linux/percpu_counter.h~lib-percpu_counter_set
+++ a/include/linux/percpu_counter.h
@@ -32,6 +32,7 @@ struct percpu_counter {
void percpu_counter_init(struct percpu_counter *fbc, s64 amount);
void percpu_counter_destroy(struct percpu_counter *fbc);
+void percpu_counter_set(struct percpu_counter *fbc, s64 amount);
void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch);
s64 percpu_counter_sum(struct percpu_counter *fbc);
@@ -75,6 +76,11 @@ static inline void percpu_counter_destro
{
}
+static inline void percpu_counter_set(struct percpu_counter *fbc, s64 amount)
+{
+ fbc->count = amount;
+}
+
#define __percpu_counter_add(fbc, amount, batch) \
percpu_counter_add(fbc, amount)
diff -puN lib/percpu_counter.c~lib-percpu_counter_set lib/percpu_counter.c
--- a/lib/percpu_counter.c~lib-percpu_counter_set
+++ a/lib/percpu_counter.c
@@ -14,6 +14,20 @@ static LIST_HEAD(percpu_counters);
static DEFINE_MUTEX(percpu_counters_lock);
#endif
+void percpu_counter_set(struct percpu_counter *fbc, s64 amount)
+{
+ int cpu;
+
+ spin_lock(&fbc->lock);
+ for_each_possible_cpu(cpu) {
+ s32 *pcount = per_cpu_ptr(fbc->counters, cpu);
+ *pcount = 0;
+ }
+ fbc->count = amount;
+ spin_unlock(&fbc->lock);
+}
+EXPORT_SYMBOL(percpu_counter_set);
+
void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch)
{
s64 count;
_
Patches currently in -mm which might be from a.p.zijlstra@xxxxxxxxx are
radix-tree-use-indirect-bit.patch
nfs-remove-congestion_end.patch
lib-percpu_counter_add.patch
lib-percpu_counter-variable-batch.patch
lib-make-percpu_counter_add-take-s64.patch
lib-percpu_counter_set.patch
lib-percpu_counter_sum_positive.patch
lib-percpu_count_sum.patch
lib-percpu_counter_init-error-handling.patch
lib-percpu_counter_init_irq.patch
mm-bdi-init-hooks.patch
mtd-bdi-init-hooks.patch
mtd-clean-up-the-backing_dev_info-usage.patch
mtd-give-mtdconcat-devices-their-own-backing_dev_info.patch
mm-scalable-bdi-statistics-counters.patch
mm-count-reclaimable-pages-per-bdi.patch
mm-count-writeback-pages-per-bdi.patch
mm-expose-bdi-statistics-in-sysfs.patch
lib-floating-proportions.patch
lib-floating-proportions-_single.patch
mm-per-device-dirty-threshold.patch
mm-dirty-balancing-for-tasks.patch
debug-sysfs-files-for-the-current-ratio-size-total.patch
intel-iommu-dmar-detection-and-parsing-logic.patch
intel-iommu-pci-generic-helper-function.patch
intel-iommu-clflush_cache_range-now-takes-size-param.patch
intel-iommu-iova-allocation-and-management-routines.patch
intel-iommu-intel-iommu-driver.patch
intel-iommu-avoid-memory-allocation-failures-in-dma-map-api-calls.patch
intel-iommu-intel-iommu-cmdline-option-forcedac.patch
intel-iommu-dmar-fault-handling-support.patch
intel-iommu-iommu-gfx-workaround.patch
intel-iommu-iommu-floppy-workaround.patch
containers-bdi-init-hooks.patch
workqueue-debug-flushing-deadlocks-with-lockdep.patch
workqueue-debug-work-related-deadlocks-with-lockdep.patch
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