Date: Sat, 16 Oct 2010 11:44:58 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r213923 - stable/7/sys/kern Message-ID: <201010161144.o9GBiwoM075720@svn.freebsd.org>
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Author: avg Date: Sat Oct 16 11:44:58 2010 New Revision: 213923 URL: http://svn.freebsd.org/changeset/base/213923 Log: MFC r213651: add kmem_map_free sysctl: query largest contiguous free range in kmem_map Modified: stable/7/sys/kern/kern_malloc.c Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/kern/kern_malloc.c ============================================================================== --- stable/7/sys/kern/kern_malloc.c Sat Oct 16 11:41:20 2010 (r213922) +++ stable/7/sys/kern/kern_malloc.c Sat Oct 16 11:44:58 2010 (r213923) @@ -202,6 +202,11 @@ SYSCTL_PROC(_vm, OID_AUTO, kmem_map_size CTLFLAG_RD | CTLTYPE_ULONG | CTLFLAG_MPSAFE, NULL, 0, sysctl_kmem_map_size, "LU", "Current kmem_map allocation size"); +static int sysctl_kmem_map_free(SYSCTL_HANDLER_ARGS); +SYSCTL_PROC(_vm, OID_AUTO, kmem_map_free, + CTLFLAG_RD | CTLTYPE_ULONG | CTLFLAG_MPSAFE, NULL, 0, + sysctl_kmem_map_free, "LU", "Largest contiguous free range in kmem_map"); + /* * The malloc_mtx protects the kmemstatistics linked list. */ @@ -247,6 +252,18 @@ sysctl_kmem_map_size(SYSCTL_HANDLER_ARGS return (sysctl_handle_long(oidp, &size, 0, req)); } +static int +sysctl_kmem_map_free(SYSCTL_HANDLER_ARGS) +{ + u_long size; + + vm_map_lock_read(kmem_map); + size = kmem_map->root != NULL ? + kmem_map->root->max_free : kmem_map->size; + vm_map_unlock_read(kmem_map); + return (sysctl_handle_long(oidp, &size, 0, req)); +} + int malloc_last_fail(void) {
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