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percpu_counter: add @gfp to percpu_counter_init()

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Percpu allocator now supports allocation mask.  Add @gfp to
percpu_counter_init() so that !GFP_KERNEL allocation masks can be used
with percpu_counters too.

We could have left percpu_counter_init() alone and added
percpu_counter_init_gfp(); however, the number of users isn't that
high and introducing _gfp variants to all percpu data structures would
be quite ugly, so let's just do the conversion.  This is the one with
the most users.  Other percpu data structures are a lot easier to
convert.

This patch doesn't make any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: "David S. Miller" <davem@davemloft.net>
Cc: x86@kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Tejun Heo
2014-09-08 09:51:29 +09:00
parent ebd8fef304
commit 908c7f1949
23 changed files with 49 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/linux/percpu_counter.h
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@@ -12,6 +12,7 @@
#include <linux/threads.h>
#include <linux/percpu.h>
#include <linux/types.h>
#include <linux/gfp.h>
#ifdef CONFIG_SMP
@@ -26,14 +27,14 @@ struct percpu_counter {
extern int percpu_counter_batch;
int __percpu_counter_init(struct percpu_counter *fbc, s64 amount,
int __percpu_counter_init(struct percpu_counter *fbc, s64 amount, gfp_t gfp,
struct lock_class_key *key);
#define percpu_counter_init(fbc, value) \
#define percpu_counter_init(fbc, value, gfp) \
({ \
static struct lock_class_key __key; \
\
__percpu_counter_init(fbc, value, &__key); \
__percpu_counter_init(fbc, value, gfp, &__key); \
})
void percpu_counter_destroy(struct percpu_counter *fbc);
@@ -89,7 +90,8 @@ struct percpu_counter {
s64 count;
};
static inline int percpu_counter_init(struct percpu_counter *fbc, s64 amount)
static inline int percpu_counter_init(struct percpu_counter *fbc, s64 amount,
gfp_t gfp)
{
fbc->count = amount;
return 0;