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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-11-15 18:47:00 -0500
committerIngo Molnar <mingo@elte.hu>2010-11-18 07:27:46 -0500
commit2069dd75c7d0f49355939e5586daf5a9ab216db7 (patch)
treec221747420e47b194a2a634024438a55420224d5 /kernel/sysctl.c
parent48c5ccae88dcd989d9de507e8510313c6cbd352b (diff)
sched: Rewrite tg_shares_up)
By tracking a per-cpu load-avg for each cfs_rq and folding it into a global task_group load on each tick we can rework tg_shares_up to be strictly per-cpu. This should improve cpu-cgroup performance for smp systems significantly. [ Paul: changed to use queueing cfs_rq + bug fixes ] Signed-off-by: Paul Turner <pjt@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20101115234937.580480400@google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c19
1 files changed, 0 insertions, 19 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b65bf634035e..3132b25193db 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -259,8 +259,6 @@ static int min_wakeup_granularity_ns; /* 0 usecs */
259static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */ 259static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */
260static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE; 260static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE;
261static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1; 261static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1;
262static int min_sched_shares_ratelimit = 100000; /* 100 usec */
263static int max_sched_shares_ratelimit = NSEC_PER_SEC; /* 1 second */
264#endif 262#endif
265 263
266#ifdef CONFIG_COMPACTION 264#ifdef CONFIG_COMPACTION
@@ -305,15 +303,6 @@ static struct ctl_table kern_table[] = {
305 .extra2 = &max_wakeup_granularity_ns, 303 .extra2 = &max_wakeup_granularity_ns,
306 }, 304 },
307 { 305 {
308 .procname = "sched_shares_ratelimit",
309 .data = &sysctl_sched_shares_ratelimit,
310 .maxlen = sizeof(unsigned int),
311 .mode = 0644,
312 .proc_handler = sched_proc_update_handler,
313 .extra1 = &min_sched_shares_ratelimit,
314 .extra2 = &max_sched_shares_ratelimit,
315 },
316 {
317 .procname = "sched_tunable_scaling", 306 .procname = "sched_tunable_scaling",
318 .data = &sysctl_sched_tunable_scaling, 307 .data = &sysctl_sched_tunable_scaling,
319 .maxlen = sizeof(enum sched_tunable_scaling), 308 .maxlen = sizeof(enum sched_tunable_scaling),
@@ -323,14 +312,6 @@ static struct ctl_table kern_table[] = {
323 .extra2 = &max_sched_tunable_scaling, 312 .extra2 = &max_sched_tunable_scaling,
324 }, 313 },
325 { 314 {
326 .procname = "sched_shares_thresh",
327 .data = &sysctl_sched_shares_thresh,
328 .maxlen = sizeof(unsigned int),
329 .mode = 0644,
330 .proc_handler = proc_dointvec_minmax,
331 .extra1 = &zero,
332 },
333 {
334 .procname = "sched_migration_cost", 315 .procname = "sched_migration_cost",
335 .data = &sysctl_sched_migration_cost, 316 .data = &sysctl_sched_migration_cost,
336 .maxlen = sizeof(unsigned int), 317 .maxlen = sizeof(unsigned int),