Date: Tue, 19 Dec 2017 10:06:55 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r326974 - head/sys/vm Message-ID: <201712191006.vBJA6tEP037409@repo.freebsd.org>
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Author: kib Date: Tue Dec 19 10:06:55 2017 New Revision: 326974 URL: https://svnweb.freebsd.org/changeset/base/326974 Log: Perform all accesses to uma_reclaim_needed using atomic(9) KPI. Reviewed by: alc, jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D13534 Modified: head/sys/vm/uma_core.c Modified: head/sys/vm/uma_core.c ============================================================================== --- head/sys/vm/uma_core.c Tue Dec 19 10:05:45 2017 (r326973) +++ head/sys/vm/uma_core.c Tue Dec 19 10:06:55 2017 (r326974) @@ -3170,14 +3170,14 @@ uma_reclaim_worker(void *arg __unused) for (;;) { sx_xlock(&uma_drain_lock); - while (uma_reclaim_needed == 0) + while (atomic_load_int(&uma_reclaim_needed) == 0) sx_sleep(uma_reclaim, &uma_drain_lock, PVM, "umarcl", hz); sx_xunlock(&uma_drain_lock); EVENTHANDLER_INVOKE(vm_lowmem, VM_LOW_KMEM); sx_xlock(&uma_drain_lock); uma_reclaim_locked(true); - uma_reclaim_needed = 0; + atomic_store_int(&uma_reclaim_needed, 0); sx_xunlock(&uma_drain_lock); /* Don't fire more than once per-second. */ pause("umarclslp", hz);
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