Date: Tue, 6 Dec 2016 22:52:45 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r309658 - head/sys/vm Message-ID: <201612062252.uB6Mqjhr019191@repo.freebsd.org>
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Author: markj Date: Tue Dec 6 22:52:45 2016 New Revision: 309658 URL: https://svnweb.freebsd.org/changeset/base/309658 Log: Provide dummy sysctls for v_cache_count and v_tcached. Some utilities (notably top(1)) exit if any of their input sysctls don't exist, and the removal of the above-mentioned PG_CACHE-related sysctls makes it difficult to run such utilities on different versions of the kernel without recompiling. Requested by: bde Modified: head/sys/vm/vm_meter.c Modified: head/sys/vm/vm_meter.c ============================================================================== --- head/sys/vm/vm_meter.c Tue Dec 6 22:48:28 2016 (r309657) +++ head/sys/vm/vm_meter.c Tue Dec 6 22:52:45 2016 (r309658) @@ -314,3 +314,14 @@ VM_STATS_VM(v_forkpages, "VM pages affec VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()"); VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()"); VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel"); + +#ifndef BURN_BRIDGES +/* + * Provide compatibility sysctls for the benefit of old utilities which exit + * with an error if they cannot be found. + */ +SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_cache_count, CTLFLAG_RD, + (u_int *)NULL, 0, "Dummy for compatibility"); +SYSCTL_UINT(_vm_stats_vm, OID_AUTO, v_tcached, CTLFLAG_RD, + (u_int *)NULL, 0, "Dummy for compatibility"); +#endif
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