From 77edd8fa0008def2217b1adf5106b68296a713b4 Mon Sep 17 00:00:00 2001 From: Mark Johnston Date: Tue, 6 Dec 2016 22:52:45 +0000 Subject: [PATCH] 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 --- sys/vm/vm_meter.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sys/vm/vm_meter.c b/sys/vm/vm_meter.c index 2ea5cdad520a..2b8a5d7fd8f3 100644 --- a/sys/vm/vm_meter.c +++ b/sys/vm/vm_meter.c @@ -314,3 +314,14 @@ VM_STATS_VM(v_forkpages, "VM pages affected by fork()"); 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