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libthr: const-ify two variables

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Make the default umutex and urwlock initializers const,
because they can be, and as a microoptimization.

MFC after:	5 days
Sponsored by:	Dell Inc.
This commit is contained in:
Eric van Gyzen 2016-01-13 22:34:55 +00:00
parent 216818a1bb
commit 8e402f34b9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=293858
1 changed files with 3 additions and 2 deletions
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lib/libthr/thread/thr_umtx.c
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@ -42,7 +42,7 @@ int _umtx_op_err(void *obj, int op, u_long val, void *uaddr, void *uaddr2)
void
_thr_umutex_init(struct umutex *mtx)
{
static struct umutex default_mtx = DEFAULT_UMUTEX;
static const struct umutex default_mtx = DEFAULT_UMUTEX;
*mtx = default_mtx;
}
@ -50,7 +50,8 @@ _thr_umutex_init(struct umutex *mtx)
void
_thr_urwlock_init(struct urwlock *rwl)
{
static struct urwlock default_rwl = DEFAULT_URWLOCK;
static const struct urwlock default_rwl = DEFAULT_URWLOCK;
*rwl = default_rwl;
}