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authorArve Hjønnevåg <arve@android.com>2009-02-17 14:51:02 -0800
committerColin Cross <ccross@android.com>2010-09-29 17:49:04 -0700
commit8fa2a8933d517dfffa17596e990543fab4737020 (patch)
tree777a0a312b44f8e7b7859eff81768b052ae1ce48 /kernel
parent49483c5c9e6fa3cb432d106cdfdc0b00b5ce0bb9 (diff)
mm: Add min_free_order_shift tunable.
By default the kernel tries to keep half as much memory free at each order as it does for one order below. This can be too agressive when running without swap. Change-Id: I5efc1a0b50f41ff3ac71e92d2efd175dedd54ead Signed-off-by: Arve Hjønnevåg <arve@android.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sysctl.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f88552c6d227..aadaee9bcb18 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -94,6 +94,7 @@ extern char core_pattern[];
extern unsigned int core_pipe_limit;
extern int pid_max;
extern int min_free_kbytes;
+extern int min_free_order_shift;
extern int pid_max_min, pid_max_max;
extern int sysctl_drop_caches;
extern int percpu_pagelist_fraction;
@@ -1157,6 +1158,13 @@ static struct ctl_table vm_table[] = {
.extra1 = &zero,
},
{
+ .procname = "min_free_order_shift",
+ .data = &min_free_order_shift,
+ .maxlen = sizeof(min_free_order_shift),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ },
+ {
.procname = "percpu_pagelist_fraction",
.data = &percpu_pagelist_fraction,
.maxlen = sizeof(percpu_pagelist_fraction),