[PATCH 4/4] mm: introduce no_ksm to disable totally KSM
From: Amerigo Wang <hidden>
Date: 2011-06-21 08:12:27
Also in:
lkml
Subsystem:
memory management, memory management - ksm (kernel samepage merging), the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Introduce a new kernel parameter "no_ksm" to totally disable KSM. Signed-off-by: WANG Cong <redacted> --- mm/ksm.c | 13 +++++++++++++ 1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/mm/ksm.c b/mm/ksm.c
index 9a68b0c..eeb45a2 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c@@ -1984,11 +1984,24 @@ static struct attribute_group ksm_attr_group = { }; #endif /* CONFIG_SYSFS */ +static int no_ksm; +static int __init setup_ksm(char *str) +{ + no_ksm = 1; + return 0; +} +__setup("no_ksm", setup_ksm); + static int __init ksm_init(void) { struct task_struct *ksm_thread; int err; + if (no_ksm) { + printk(KERN_INFO "ksm: disabled by cmdline\n"); + return 0; + } + err = ksm_slab_init(); if (err) goto out;
--
1.7.4.4
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