Date: Thu, 7 Oct 2010 18:11:33 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r213527 - head/sys/kern Message-ID: <201010071811.o97IBXOO048985@svn.freebsd.org>
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Author: avg Date: Thu Oct 7 18:11:33 2010 New Revision: 213527 URL: http://svn.freebsd.org/changeset/base/213527 Log: vm.kmem_map_size: a sysctl to query current kmem_map->size Based on a patch from Sandvine Incorporated via emaste. Reviewed by: emaste MFC after: 1 week Modified: head/sys/kern/kern_malloc.c Modified: head/sys/kern/kern_malloc.c ============================================================================== --- head/sys/kern/kern_malloc.c Thu Oct 7 18:00:55 2010 (r213526) +++ head/sys/kern/kern_malloc.c Thu Oct 7 18:11:33 2010 (r213527) @@ -202,6 +202,11 @@ static u_int vm_kmem_size_scale; SYSCTL_UINT(_vm, OID_AUTO, kmem_size_scale, CTLFLAG_RDTUN, &vm_kmem_size_scale, 0, "Scale factor for kernel memory size"); +static int sysctl_kmem_map_size(SYSCTL_HANDLER_ARGS); +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"); + /* * The malloc_mtx protects the kmemstatistics linked list. */ @@ -240,6 +245,15 @@ SYSCTL_INT(_debug_malloc, OID_AUTO, fail &malloc_failure_count, 0, "Number of imposed M_NOWAIT malloc failures"); #endif +static int +sysctl_kmem_map_size(SYSCTL_HANDLER_ARGS) +{ + u_long size; + + size = kmem_map->size; + return (sysctl_handle_long(oidp, &size, 0, req)); +} + /* * malloc(9) uma zone separation -- sub-page buffer overruns in one * malloc type will affect only a subset of other malloc types.
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