diff options
| author | Pavankumar Kondeti <pkondeti@codeaurora.org> | 2018-01-09 11:02:30 +0530 |
|---|---|---|
| committer | Lingutla Chandrasekhar <clingutla@codeaurora.org> | 2018-04-24 11:33:10 +0530 |
| commit | 10e91c5e578fb378b53b8f8e7a3e8d1e6cf6e1f5 (patch) | |
| tree | 64bf964c901bc085d12c32d1b008bfa4b4402655 /include | |
| parent | 893b274e18b341e8c998282b60385db54101eb8f (diff) | |
sched: Add trace point to track preemption disable callers
Add trace point to track preemption disable callers to
isolate issues unrelated to scheduler and improve debug
turn around time.
Change-Id: If9303b7165167e8f79cd339929daf4afc31a61c4
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched/sysctl.h | 4 | ||||
| -rw-r--r-- | include/trace/events/sched.h | 32 |
2 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index ca7c8041b894..58941b90ebe4 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -85,6 +85,10 @@ extern unsigned int sysctl_sched_short_sleep; #endif /* CONFIG_SCHED_HMP */ +#if defined(CONFIG_PREEMPT_TRACER) || defined(CONFIG_IRQSOFF_TRACER) +extern unsigned int sysctl_preemptoff_tracing_threshold_ns; +#endif + enum sched_tunable_scaling { SCHED_TUNABLESCALING_NONE, SCHED_TUNABLESCALING_LOG, diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index cc0ebe6867a5..8fd96aebfdee 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -1436,6 +1436,38 @@ TRACE_EVENT(sched_isolate, __entry->time, __entry->isolate) ); +TRACE_EVENT(sched_preempt_disable, + + TP_PROTO(u64 delta, bool irqs_disabled, + unsigned long caddr0, unsigned long caddr1, + unsigned long caddr2, unsigned long caddr3), + + TP_ARGS(delta, irqs_disabled, caddr0, caddr1, caddr2, caddr3), + + TP_STRUCT__entry( + __field(u64, delta) + __field(bool, irqs_disabled) + __field(void*, caddr0) + __field(void*, caddr1) + __field(void*, caddr2) + __field(void*, caddr3) + ), + + TP_fast_assign( + __entry->delta = delta; + __entry->irqs_disabled = irqs_disabled; + __entry->caddr0 = (void *)caddr0; + __entry->caddr1 = (void *)caddr1; + __entry->caddr2 = (void *)caddr2; + __entry->caddr3 = (void *)caddr3; + ), + + TP_printk("delta=%llu(ns) irqs_d=%d Callers:(%pf<-%pf<-%pf<-%pf)", + __entry->delta, __entry->irqs_disabled, + __entry->caddr0, __entry->caddr1, + __entry->caddr2, __entry->caddr3) +); + TRACE_EVENT(sched_contrib_scale_f, TP_PROTO(int cpu, unsigned long freq_scale_factor, |