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amd64: __exclusive_cache_line pv_chunks_mutex and pv_list_locks

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Note that pv_list_locks is an array and currently it fits 2 locks per line.
Resizing it and/or putting more locks in different lines requires several tests.

MFC after:	1 week
This commit is contained in:
mjg 2017-10-20 03:38:58 +00:00
parent abcba1b168
commit 86705ae197
1 changed files with 2 additions and 2 deletions
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4
sys/amd64/amd64/pmap.c
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@ -380,8 +380,8 @@ static int pmap_initialized;
* elements, but reads are not.
*/
static TAILQ_HEAD(pch, pv_chunk) pv_chunks = TAILQ_HEAD_INITIALIZER(pv_chunks);
static struct mtx pv_chunks_mutex;
static struct rwlock pv_list_locks[NPV_LIST_LOCKS];
static struct mtx __exclusive_cache_line pv_chunks_mutex;
static struct rwlock __exclusive_cache_line pv_list_locks[NPV_LIST_LOCKS];
static u_long pv_invl_gen[NPV_LIST_LOCKS];
static struct md_page *pv_table;
static struct md_page pv_dummy;