The patch titled
lib: percpu_count_sum()
has been added to the -mm tree. Its filename is
lib-percpu_count_sum.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_count_sum()
From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Provide an accurate version of percpu_counter_read.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/percpu_counter.h | 18 +++++++++++++++++-
lib/percpu_counter.c | 6 +++---
2 files changed, 20 insertions(+), 4 deletions(-)
diff -puN include/linux/percpu_counter.h~lib-percpu_count_sum include/linux/percpu_counter.h
--- a/include/linux/percpu_counter.h~lib-percpu_count_sum
+++ a/include/linux/percpu_counter.h
@@ -34,13 +34,24 @@ void percpu_counter_init(struct percpu_c
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_positive(struct percpu_counter *fbc);
+s64 __percpu_counter_sum(struct percpu_counter *fbc);
static inline void percpu_counter_add(struct percpu_counter *fbc, s64 amount)
{
__percpu_counter_add(fbc, amount, FBC_BATCH);
}
+static inline s64 percpu_counter_sum_positive(struct percpu_counter *fbc)
+{
+ s64 ret = __percpu_counter_sum(fbc);
+ return ret < 0 ? 0 : ret;
+}
+
+static inline s64 percpu_counter_sum(struct percpu_counter *fbc)
+{
+ return __percpu_counter_sum(fbc);
+}
+
static inline s64 percpu_counter_read(struct percpu_counter *fbc)
{
return fbc->count;
@@ -107,6 +118,11 @@ static inline s64 percpu_counter_sum_pos
return percpu_counter_read_positive(fbc);
}
+static inline s64 percpu_counter_sum(struct percpu_counter *fbc)
+{
+ return percpu_counter_read(fbc);
+}
+
#endif /* CONFIG_SMP */
static inline void percpu_counter_inc(struct percpu_counter *fbc)
diff -puN lib/percpu_counter.c~lib-percpu_count_sum lib/percpu_counter.c
--- a/lib/percpu_counter.c~lib-percpu_count_sum
+++ a/lib/percpu_counter.c
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(__percpu_counter_add);
* Add up all the per-cpu counts, return the result. This is a more accurate
* but much slower version of percpu_counter_read_positive()
*/
-s64 percpu_counter_sum_positive(struct percpu_counter *fbc)
+s64 __percpu_counter_sum(struct percpu_counter *fbc)
{
s64 ret;
int cpu;
@@ -64,9 +64,9 @@ s64 percpu_counter_sum_positive(struct p
ret += *pcount;
}
spin_unlock(&fbc->lock);
- return ret < 0 ? 0 : ret;
+ return ret;
}
-EXPORT_SYMBOL(percpu_counter_sum_positive);
+EXPORT_SYMBOL(__percpu_counter_sum);
void percpu_counter_init(struct percpu_counter *fbc, s64 amount)
{
_
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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