Messages in this thread Patch in this message | | | Date | Mon, 16 Nov 2009 15:07:23 -0600 | From | Mike Travis <> | Subject | [PATCH 5/6] sched: Limit the number of scheduler debug messages |
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Remove the verbose scheduler debug messages unless kernel parameter "sched_debug" set. /proc/sched_debug unchanged.
Signed-off-by: Mike Travis <travis@sgi.com> --- Documentation/kernel-parameters.txt | 2 ++ kernel/sched.c | 13 +++++++++++++ 2 files changed, 15 insertions(+)
--- linux.orig/Documentation/kernel-parameters.txt +++ linux/Documentation/kernel-parameters.txt @@ -2182,6 +2182,8 @@ sbni= [NET] Granch SBNI12 leased line adapter + sched_debug [KNL] Enables verbose scheduler debug messages. + sc1200wdt= [HW,WDT] SC1200 WDT (watchdog) driver Format: <io>[,<timeout>[,<isapnp>]] --- linux.orig/kernel/sched.c +++ linux/kernel/sched.c @@ -7743,6 +7743,16 @@ #ifdef CONFIG_SCHED_DEBUG +static __read_mostly int sched_domain_debug_enabled; + +static int __init sched_domain_debug_setup(char *str) +{ + sched_domain_debug_enabled = 1; + + return 0; +} +early_param("sched_debug", sched_domain_debug_setup); + static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level, struct cpumask *groupmask) { @@ -7829,6 +7839,9 @@ cpumask_var_t groupmask; int level = 0; + if (!sched_domain_debug_enabled) + return; + if (!sd) { printk(KERN_DEBUG "CPU%d attaching NULL sched-domain.\n", cpu); return; --
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