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drm/xe/trace: Add trace for engine activity

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Add engine activity related information to trace events for
better debuggability

v2: add trace for engine activity (Umesh)
v3: use hex for quanta_ratio

Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250224053903.2253539-3-riana.tauro@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
This commit is contained in:
Riana Tauro
2025-02-24 11:08:59 +05:30
committed by Lucas De Marchi
parent b729ea271e
commit 9e19f42955
2 changed files with 54 additions and 0 deletions
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5
drivers/gpu/drm/xe/xe_guc_engine_activity.c
View File

@@ -17,6 +17,7 @@
#include "xe_hw_engine.h"
#include "xe_map.h"
#include "xe_mmio.h"
#include "xe_trace_guc.h"
#define TOTAL_QUANTA 0x8000
@@ -165,6 +166,8 @@ update:
ea->active = lower_32_bits(gpm_ts) - cached_activity->last_update_tick;
}
trace_xe_guc_engine_activity(xe, ea, hwe->name, hwe->instance);
return ea->total + ea->active;
}
@@ -198,6 +201,8 @@ static u64 get_engine_total_ticks(struct xe_guc *guc, struct xe_hw_engine *hwe)
ea->quanta_remainder_ns = numerator % TOTAL_QUANTA;
ea->quanta = cpu_ns_to_guc_tsc_tick(ea->quanta_ns, cached_metadata->guc_tsc_frequency_hz);
trace_xe_guc_engine_activity(xe, ea, hwe->name, hwe->instance);
return ea->quanta;
}

49
drivers/gpu/drm/xe/xe_trace_guc.h
View File

@@ -14,6 +14,7 @@
#include "xe_device_types.h"
#include "xe_guc_exec_queue_types.h"
#include "xe_guc_engine_activity_types.h"
#define __dev_name_xe(xe) dev_name((xe)->drm.dev)
@@ -100,6 +101,54 @@ DEFINE_EVENT_PRINT(xe_guc_ctb, xe_guc_ctb_g2h,
);
TRACE_EVENT(xe_guc_engine_activity,
TP_PROTO(struct xe_device *xe, struct engine_activity *ea, const char *name,
u16 instance),
TP_ARGS(xe, ea, name, instance),
TP_STRUCT__entry(
__string(dev, __dev_name_xe(xe))
__string(name, name)
__field(u32, global_change_num)
__field(u32, guc_tsc_frequency_hz)
__field(u32, lag_latency_usec)
__field(u16, instance)
__field(u16, change_num)
__field(u16, quanta_ratio)
__field(u32, last_update_tick)
__field(u64, active_ticks)
__field(u64, active)
__field(u64, total)
__field(u64, quanta)
__field(u64, last_cpu_ts)
),
TP_fast_assign(
__assign_str(dev);
__assign_str(name);
__entry->global_change_num = ea->metadata.global_change_num;
__entry->guc_tsc_frequency_hz = ea->metadata.guc_tsc_frequency_hz;
__entry->lag_latency_usec = ea->metadata.lag_latency_usec;
__entry->instance = instance;
__entry->change_num = ea->activity.change_num;
__entry->quanta_ratio = ea->activity.quanta_ratio;
__entry->last_update_tick = ea->activity.last_update_tick;
__entry->active_ticks = ea->activity.active_ticks;
__entry->active = ea->active;
__entry->total = ea->total;
__entry->quanta = ea->quanta;
__entry->last_cpu_ts = ea->last_cpu_ts;
),
TP_printk("dev=%s engine %s:%d Active=%llu, quanta=%llu, last_cpu_ts=%llu\n"
"Activity metadata: global_change_num=%u, guc_tsc_frequency_hz=%u lag_latency_usec=%u\n"
"Activity data: change_num=%u, quanta_ratio=0x%x, last_update_tick=%u, active_ticks=%llu\n",
__get_str(dev), __get_str(name), __entry->instance,
(__entry->active + __entry->total), __entry->quanta, __entry->last_cpu_ts,
__entry->global_change_num, __entry->guc_tsc_frequency_hz,
__entry->lag_latency_usec, __entry->change_num, __entry->quanta_ratio,
__entry->last_update_tick, __entry->active_ticks)
);
#endif
/* This part must be outside protection */