Author: mjg Date: Tue Oct 22 22:55:46 2019 New Revision: 353906 URL: https://svnweb.freebsd.org/changeset/base/353906
Log: amd64 pmap: conditionalize per-superpage locks on NUMA Instead of superpages use. The current code employs superpage-wide locking regardless and the better locking granularity is welcome with NUMA enabled even when superpage support is not used. Requested by: alc Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D21982 Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Tue Oct 22 22:54:41 2019 (r353905) +++ head/sys/amd64/amd64/pmap.c Tue Oct 22 22:55:46 2019 (r353906) @@ -322,7 +322,7 @@ pmap_pku_mask_bit(pmap_t pmap) ("address %lx beyond the last segment", (pa))); \ (pa) >> PDRSHIFT; \ }) -#if VM_NRESERVLEVEL > 0 +#ifdef NUMA #define pa_to_pmdp(pa) (&pv_table[pa_index(pa)]) #define pa_to_pvh(pa) (&(pa_to_pmdp(pa)->pv_page)) #define PHYS_TO_PV_LIST_LOCK(pa) ({ \ @@ -422,7 +422,7 @@ static int pmap_initialized; */ static TAILQ_HEAD(pch, pv_chunk) pv_chunks = TAILQ_HEAD_INITIALIZER(pv_chunks); static struct mtx __exclusive_cache_line pv_chunks_mutex; -#if VM_NRESERVLEVEL > 0 +#ifdef NUMA struct pmap_large_md_page { struct rwlock pv_lock; struct md_page pv_page; @@ -947,7 +947,7 @@ SYSCTL_LONG(_vm_pmap, OID_AUTO, invl_wait_slow, CTLFLA "Number of slow invalidation waits for lockless DI"); #endif -#if VM_NRESERVLEVEL > 0 +#ifdef NUMA static u_long * pmap_delayed_invl_genp(vm_page_t m) { @@ -1850,7 +1850,7 @@ pmap_page_init(vm_page_t m) m->md.pat_mode = PAT_WRITE_BACK; } -#if VM_NRESERVLEVEL > 0 +#ifdef NUMA static void pmap_init_pv_table(void) { _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
