From e127031f4f76dc367c5d2f9d883715730dd82f7d Mon Sep 17 00:00:00 2001 From: Mike Galbraith Date: Wed, 11 Jul 2007 21:21:47 +0200 Subject: [PATCH] sched: fix prio_to_wmult[] for nice 1 There's a typo in the values in prio_to_wmult[] for nice level 1. While it did not cause bad CPU distribution, but caused more rescheduling between nice-0 and nice-1 tasks than necessary. Signed-off-by: Ingo Molnar Signed-off-by: Linus Torvalds --- kernel/sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel') diff --git a/kernel/sched.c b/kernel/sched.c index 9fbced64bfe..2ab7fa8039a 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -751,7 +751,7 @@ static const u32 prio_to_wmult[40] = { 184467, 230589, 288233, 360285, 450347, 562979, 703746, 879575, 1099582, 1374389, 717986, 2147483, 2684354, 3355443, 4194304, - 244160, 6557201, 8196502, 10250518, 12782640, + 5244160, 6557201, 8196502, 10250518, 12782640, 16025997, 19976592, 24970740, 31350126, 39045157, 49367440, 61356675, 76695844, 95443717, 119304647, 148102320, 186737708, 238609294, 286331153, -- cgit v1.2.3 From a5968df8737eda477d9d1038f5428ebd4d0884e1 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 11 Jul 2007 21:21:47 +0200 Subject: [PATCH] sched: allow larger granularity Allow granularity up to 100 msecs, instead of 10 msecs. (needed on larger boxes) Signed-off-by: Ingo Molnar Signed-off-by: Linus Torvalds --- kernel/sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel') diff --git a/kernel/sched.c b/kernel/sched.c index 2ab7fa8039a..9088c2d9714 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -4778,7 +4778,7 @@ cpumask_t nohz_cpu_mask = CPU_MASK_NONE; static inline void sched_init_granularity(void) { unsigned int factor = 1 + ilog2(num_online_cpus()); - const unsigned long gran_limit = 10000000; + const unsigned long gran_limit = 100000000; sysctl_sched_granularity *= factor; if (sysctl_sched_granularity > gran_limit) -- cgit v1.2.3 From 45f384a64f0769bb9a3caf0516de88a629f48e61 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 11 Jul 2007 21:21:47 +0200 Subject: [PATCH] sched: remove stale version info from kernel/sched_debug.c kernel/sched_debug.c referred to CFS -v20, but there's no CFS versioning needed within the upstream kernel. Signed-off-by: Ingo Molnar Signed-off-by: Linus Torvalds --- kernel/sched_debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel') diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c index 1baf87cceb7..29f2c21e7da 100644 --- a/kernel/sched_debug.c +++ b/kernel/sched_debug.c @@ -171,7 +171,7 @@ static int sched_debug_show(struct seq_file *m, void *v) u64 now = ktime_to_ns(ktime_get()); int cpu; - SEQ_printf(m, "Sched Debug Version: v0.04, cfs-v20, %s %.*s\n", + SEQ_printf(m, "Sched Debug Version: v0.05, %s %.*s\n", init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version); -- cgit v1.2.3 From 4bd77321a833077c5c9ac7b9d284e261e4a8906e Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 11 Jul 2007 21:21:47 +0200 Subject: [PATCH] sched: fix show_task()/show_tasks() output fix show_task()/show_tasks() output: - there's no sibling info anymore - the fields were not aligned properly with the description - get rid of the lazy-TLB output: it's been quite some time since we last had a bug there, and when we had a bug it wasnt helped a bit by this debug output. Signed-off-by: Ingo Molnar Signed-off-by: Linus Torvalds --- kernel/sched.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) (limited to 'kernel') diff --git a/kernel/sched.c b/kernel/sched.c index 9088c2d9714..0559665a3a0 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -4647,14 +4647,14 @@ static void show_task(struct task_struct *p) state = p->state ? __ffs(p->state) + 1 : 0; printk("%-13.13s %c", p->comm, state < sizeof(stat_nam) - 1 ? stat_nam[state] : '?'); -#if (BITS_PER_LONG == 32) +#if BITS_PER_LONG == 32 if (state == TASK_RUNNING) - printk(" running "); + printk(" running "); else - printk(" %08lX ", thread_saved_pc(p)); + printk(" %08lx ", thread_saved_pc(p)); #else if (state == TASK_RUNNING) - printk(" running task "); + printk(" running task "); else printk(" %016lx ", thread_saved_pc(p)); #endif @@ -4666,11 +4666,7 @@ static void show_task(struct task_struct *p) free = (unsigned long)n - (unsigned long)end_of_stack(p); } #endif - printk("%5lu %5d %6d", free, p->pid, p->parent->pid); - if (!p->mm) - printk(" (L-TLB)\n"); - else - printk(" (NOTLB)\n"); + printk("%5lu %5d %6d\n", free, p->pid, p->parent->pid); if (state != TASK_RUNNING) show_stack(p, NULL); @@ -4680,14 +4676,12 @@ void show_state_filter(unsigned long state_filter) { struct task_struct *g, *p; -#if (BITS_PER_LONG == 32) - printk("\n" - " free sibling\n"); - printk(" task PC stack pid father child younger older\n"); +#if BITS_PER_LONG == 32 + printk(KERN_INFO + " task PC stack pid father\n"); #else - printk("\n" - " free sibling\n"); - printk(" task PC stack pid father child younger older\n"); + printk(KERN_INFO + " task PC stack pid father\n"); #endif read_lock(&tasklist_lock); do_each_thread(g, p) { -- cgit v1.2.3