Date: Fri, 27 Apr 2018 05:36:02 +0000 (UTC) From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r333051 - in head/sys: sys vm Message-ID: <201804270536.w3R5a2tG064416@repo.freebsd.org>
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Author: mjg Date: Fri Apr 27 05:36:02 2018 New Revision: 333051 URL: https://svnweb.freebsd.org/changeset/base/333051 Log: vm: move vm_cnt to __read_mostly now that it is not written to While here whack unused locking keys for the struct. Discussed with: jeff Modified: head/sys/sys/vmmeter.h head/sys/vm/vm_meter.c Modified: head/sys/sys/vmmeter.h ============================================================================== --- head/sys/sys/vmmeter.h Fri Apr 27 05:32:09 2018 (r333050) +++ head/sys/sys/vmmeter.h Fri Apr 27 05:36:02 2018 (r333051) @@ -73,11 +73,8 @@ struct vmtotal { /* * System wide statistics counters. * Locking: - * a - locked by atomic operations * c - constant after initialization - * f - locked by vm_page_queue_free_mtx * p - uses counter(9) - * q - changes are synchronized by the corresponding vm_pagequeue lock */ struct vmmeter { /* Modified: head/sys/vm/vm_meter.c ============================================================================== --- head/sys/vm/vm_meter.c Fri Apr 27 05:32:09 2018 (r333050) +++ head/sys/vm/vm_meter.c Fri Apr 27 05:36:02 2018 (r333051) @@ -58,7 +58,7 @@ __FBSDID("$FreeBSD$"); #include <vm/vm_object.h> #include <sys/sysctl.h> -struct vmmeter __exclusive_cache_line vm_cnt = { +struct vmmeter __read_mostly vm_cnt = { .v_swtch = EARLY_COUNTER, .v_trap = EARLY_COUNTER, .v_syscall = EARLY_COUNTER,
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