Author: imp
Date: Mon Aug 28 23:54:25 2017
New Revision: 322995
URL: https://svnweb.freebsd.org/changeset/base/322995
Log:
Add new compile-time option NVME_USE_NVD that sets the default value
of the runtime hw.nvme.use_vnd tunable. We still default to nvd unless
otherwise requested.
Sponsored by: Netflix
Modified:
head/sys/conf/options
head/sys/dev/nvme/nvme_sysctl.c
Modified: head/sys/conf/options
==============================================================================
--- head/sys/conf/options Mon Aug 28 23:54:20 2017 (r322994)
+++ head/sys/conf/options Mon Aug 28 23:54:25 2017 (r322995)
@@ -998,3 +998,6 @@ HN_DEBUG opt_hn.h
MMCCAM
# Encrypted kernel crash dumps
EKCD opt_ekcd.h
+
+# NVME options
+NVME_USE_NVD opt_nvme.h
Modified: head/sys/dev/nvme/nvme_sysctl.c
==============================================================================
--- head/sys/dev/nvme/nvme_sysctl.c Mon Aug 28 23:54:20 2017
(r322994)
+++ head/sys/dev/nvme/nvme_sysctl.c Mon Aug 28 23:54:25 2017
(r322995)
@@ -27,13 +27,19 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#include "opt_nvme.h"
+
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/sysctl.h>
#include "nvme_private.h"
-int nvme_use_nvd = 1;
+#ifndef NVME_USE_NVD
+#define NVME_USE_NVD 1
+#endif
+
+int nvme_use_nvd = NVME_USE_NVD;
SYSCTL_NODE(_hw, OID_AUTO, nvme, CTLFLAG_RD, 0, "NVMe sysctl tunables");
SYSCTL_INT(_hw_nvme, OID_AUTO, use_nvd, CTLFLAG_RDTUN,
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