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| author | Richard Guy Briggs <rgb@redhat.com> | 2014-06-14 00:22:00 +0200 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2014-09-23 22:37:52 +0200 |
| commit | 01478d7d60f654419ba863856cad0446bcb73a59 (patch) | |
| tree | 3b8b9a1ef0b17e57234b79c92e8383d9a7944ee9 /kernel/audit.c | |
| parent | kernel/audit.c: use ARRAY_SIZE instead of sizeof/sizeof[0] (diff) | |
| download | linux-01478d7d60f654419ba863856cad0446bcb73a59.tar.xz linux-01478d7d60f654419ba863856cad0446bcb73a59.zip | |
audit: use atomic_t to simplify audit_serial()
Since there is already a primitive to do this operation in the atomic_t, use it
to simplify audit_serial().
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Diffstat (limited to 'kernel/audit.c')
| -rw-r--r-- | kernel/audit.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/kernel/audit.c b/kernel/audit.c index 8a82d481393d..7aef7cbd7bcf 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -1301,19 +1301,9 @@ err: */ unsigned int audit_serial(void) { - static DEFINE_SPINLOCK(serial_lock); - static unsigned int serial = 0; + static atomic_t serial = ATOMIC_INIT(0); - unsigned long flags; - unsigned int ret; - - spin_lock_irqsave(&serial_lock, flags); - do { - ret = ++serial; - } while (unlikely(!ret)); - spin_unlock_irqrestore(&serial_lock, flags); - - return ret; + return atomic_add_return(1, &serial); } static inline void audit_get_stamp(struct audit_context *ctx, |