From cde8949795629dc5e9e3781fad26afc8dd8d767b Mon Sep 17 00:00:00 2001 From: Arve Hjønnevåg Date: Tue, 17 Feb 2009 14:51:02 -0800 Subject: mm: Add min_free_order_shift tunable. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- kernel/sysctl.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'kernel/sysctl.c') diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 4ab11879aeb..49f47258272 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -102,6 +102,7 @@ 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; @@ -1198,6 +1199,13 @@ static struct ctl_table vm_table[] = { .proc_handler = min_free_kbytes_sysctl_handler, .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, -- cgit v1.2.3