From b2be5e96dc0b5a179cf4cb98e65cfb605752ca26 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 9 Nov 2007 22:39:37 +0100 Subject: sched: reintroduce the sched_min_granularity tunable we lost the sched_min_granularity tunable to a clever optimization that uses the sched_latency/min_granularity ratio - but the ratio is quite unintuitive to users and can also crash the kernel if the ratio is set to 0. So reintroduce the min_granularity tunable, while keeping the ratio maintained internally. no functionality changed. [ mingo@elte.hu: some fixlets. ] Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- kernel/sysctl.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'kernel/sysctl.c') diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 3b4efbe26445..6e3b63c06856 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -235,11 +235,14 @@ static struct ctl_table kern_table[] = { #ifdef CONFIG_SCHED_DEBUG { .ctl_name = CTL_UNNUMBERED, - .procname = "sched_nr_latency", - .data = &sysctl_sched_nr_latency, + .procname = "sched_min_granularity_ns", + .data = &sysctl_sched_min_granularity, .maxlen = sizeof(unsigned int), .mode = 0644, - .proc_handler = &proc_dointvec, + .proc_handler = &sched_nr_latency_handler, + .strategy = &sysctl_intvec, + .extra1 = &min_sched_granularity_ns, + .extra2 = &max_sched_granularity_ns, }, { .ctl_name = CTL_UNNUMBERED, @@ -247,7 +250,7 @@ static struct ctl_table kern_table[] = { .data = &sysctl_sched_latency, .maxlen = sizeof(unsigned int), .mode = 0644, - .proc_handler = &proc_dointvec_minmax, + .proc_handler = &sched_nr_latency_handler, .strategy = &sysctl_intvec, .extra1 = &min_sched_granularity_ns, .extra2 = &max_sched_granularity_ns, -- cgit v1.2.3-55-g7522