Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=77e54a1f88a1cb0746c7694fa40052bd02df1123
Commit:     77e54a1f88a1cb0746c7694fa40052bd02df1123
Parent:     7dd593608df3f9d4e4531cfe29f28c3a3766a0ee
Author:     Ingo Molnar <[EMAIL PROTECTED]>
AuthorDate: Mon Jul 9 18:52:00 2007 +0200
Committer:  Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Mon Jul 9 18:52:00 2007 +0200

    sched: add CFS debug sysctls
    
    add CFS debug sysctls: only tweakable if SCHED_DEBUG is enabled.
    This allows for faster debugging of scheduler problems.
    
    Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
 kernel/sysctl.c |   80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 80 insertions(+), 0 deletions(-)

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 30ee462..51f5dac 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -206,7 +206,87 @@ static ctl_table root_table[] = {
        { .ctl_name = 0 }
 };
 
+#ifdef CONFIG_SCHED_DEBUG
+static unsigned long min_sched_granularity_ns = 100000;                /* 100 
usecs */
+static unsigned long max_sched_granularity_ns = 1000000000;    /* 1 second */
+static unsigned long min_wakeup_granularity_ns;                        /* 0 
usecs */
+static unsigned long max_wakeup_granularity_ns = 1000000000;   /* 1 second */
+#endif
+
 static ctl_table kern_table[] = {
+#ifdef CONFIG_SCHED_DEBUG
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_granularity_ns",
+               .data           = &sysctl_sched_granularity,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_minmax,
+               .strategy       = &sysctl_intvec,
+               .extra1         = &min_sched_granularity_ns,
+               .extra2         = &max_sched_granularity_ns,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_wakeup_granularity_ns",
+               .data           = &sysctl_sched_wakeup_granularity,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_minmax,
+               .strategy       = &sysctl_intvec,
+               .extra1         = &min_wakeup_granularity_ns,
+               .extra2         = &max_wakeup_granularity_ns,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_batch_wakeup_granularity_ns",
+               .data           = &sysctl_sched_batch_wakeup_granularity,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_minmax,
+               .strategy       = &sysctl_intvec,
+               .extra1         = &min_wakeup_granularity_ns,
+               .extra2         = &max_wakeup_granularity_ns,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_stat_granularity_ns",
+               .data           = &sysctl_sched_stat_granularity,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_minmax,
+               .strategy       = &sysctl_intvec,
+               .extra1         = &min_wakeup_granularity_ns,
+               .extra2         = &max_wakeup_granularity_ns,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_runtime_limit_ns",
+               .data           = &sysctl_sched_runtime_limit,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_minmax,
+               .strategy       = &sysctl_intvec,
+               .extra1         = &min_sched_granularity_ns,
+               .extra2         = &max_sched_granularity_ns,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_child_runs_first",
+               .data           = &sysctl_sched_child_runs_first,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "sched_features",
+               .data           = &sysctl_sched_features,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
+#endif
        {
                .ctl_name       = KERN_PANIC,
                .procname       = "panic",
-
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