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| author | Eiichi Tsukata <eiichi.tsukata@nutanix.com> | 2022-05-27 00:53:45 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-06-14 16:01:35 +0200 |
| commit | 0da11bf0cab9029db8b85e48d962ff05c00a4faa (patch) | |
| tree | 0edcbbfee8c88215fb27eddd9f4f24a7e03ddbd1 /include/trace | |
| parent | b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3 (diff) | |
| download | linux-0da11bf0cab9029db8b85e48d962ff05c00a4faa.tar.gz | |
cpuidle: haltpoll: Add trace points for guest_halt_poll_ns grow/shrink
Add trace points as are implemented in KVM host halt polling. This helps tune guest halt polling params. Signed-off-by: Eiichi Tsukata <eiichi.tsukata@nutanix.com> Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/power.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/trace/events/power.h b/include/trace/events/power.h index af5018aa9517..c708521e4ed5 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -500,6 +500,35 @@ DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_remove_request, TP_ARGS(name, type, new_value) ); + +TRACE_EVENT(guest_halt_poll_ns, + + TP_PROTO(bool grow, unsigned int new, unsigned int old), + + TP_ARGS(grow, new, old), + + TP_STRUCT__entry( + __field(bool, grow) + __field(unsigned int, new) + __field(unsigned int, old) + ), + + TP_fast_assign( + __entry->grow = grow; + __entry->new = new; + __entry->old = old; + ), + + TP_printk("halt_poll_ns %u (%s %u)", + __entry->new, + __entry->grow ? "grow" : "shrink", + __entry->old) +); + +#define trace_guest_halt_poll_ns_grow(new, old) \ + trace_guest_halt_poll_ns(true, new, old) +#define trace_guest_halt_poll_ns_shrink(new, old) \ + trace_guest_halt_poll_ns(false, new, old) #endif /* _TRACE_POWER_H */ /* This part must be outside protection */ |