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Message-Id: <20080318010941.602271B41E1@basil.firstfloor.org>
Date: Tue, 18 Mar 2008 02:09:41 +0100 (CET)
From: Andi Kleen <andi@...stfloor.org>
To: linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH prototype] [7/8] Add the sysctls to control pbitmaps
- pbitmap_enabled: Master switch for pbitmap
- pbitmap_early_fault: Control whether pbitmap should do
early page faults or not. Default on.
- pbitmap_update_interval: How often the pbitmap should
be updated on disk.
Signed-off-by: Andi Kleen <andi@...stfloor.org>
---
kernel/sysctl.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
Index: linux/kernel/sysctl.c
===================================================================
--- linux.orig/kernel/sysctl.c
+++ linux/kernel/sysctl.c
@@ -1044,6 +1044,36 @@ static struct ctl_table vm_table[] = {
.extra1 = &zero,
},
{
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "pbitmap_enabled",
+ .data = &pbitmap_enabled,
+ .maxlen = sizeof(pbitmap_enabled),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ .extra1 = &zero,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "pbitmap_early_fault",
+ .data = &pbitmap_early_fault,
+ .maxlen = sizeof(pbitmap_early_fault),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ .extra1 = &zero,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "pbitmap_update_interval",
+ .data = &pbitmap_update_interval,
+ .maxlen = sizeof(pbitmap_update_interval),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ .extra1 = &zero,
+ },
+ {
.ctl_name = VM_VFS_CACHE_PRESSURE,
.procname = "vfs_cache_pressure",
.data = &sysctl_vfs_cache_pressure,
--
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