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-rw-r--r--scripts/tracetool/backend/simple.py4
-rw-r--r--scripts/tracetool/format/events_c.py16
-rw-r--r--scripts/tracetool/format/events_h.py19
-rw-r--r--scripts/tracetool/format/h.py3
-rw-r--r--trace/control-internal.h19
-rw-r--r--trace/control-target.c2
-rw-r--r--trace/control.c2
-rw-r--r--trace/control.h32
-rw-r--r--trace/event-internal.h6
-rw-r--r--trace/simple.c8
-rw-r--r--trace/simple.h2
11 files changed, 48 insertions, 65 deletions
diff --git a/scripts/tracetool/backend/simple.py b/scripts/tracetool/backend/simple.py
index 1bccada63d..1114e3550b 100644
--- a/scripts/tracetool/backend/simple.py
+++ b/scripts/tracetool/backend/simple.py
@@ -80,11 +80,11 @@ def generate_c(event):
' return;',
' }',
'',
- ' if (trace_record_start(&rec, %(event_id)s, %(size_str)s)) {',
+ ' if (trace_record_start(&rec, %(event_obj)s.id, %(size_str)s)) {',
' return; /* Trace Buffer Full, Event Dropped ! */',
' }',
cond=cond,
- event_id=event_id,
+ event_obj=event.api(event.QEMU_EVENT),
size_str=sizestr)
if len(event.args) > 0:
diff --git a/scripts/tracetool/format/events_c.py b/scripts/tracetool/format/events_c.py
index a97054fd58..40ae39568e 100644
--- a/scripts/tracetool/format/events_c.py
+++ b/scripts/tracetool/format/events_c.py
@@ -28,11 +28,16 @@ def generate(events, backend):
for e in events:
out('uint16_t %s;' % e.api(e.QEMU_DSTATE))
+ next_id = 0
+ next_vcpu_id = 0
for e in events:
+ id = next_id
+ next_id += 1
if "vcpu" in e.properties:
- vcpu_id = "TRACE_VCPU_" + e.name.upper()
+ vcpu_id = next_vcpu_id
+ next_vcpu_id += 1
else:
- vcpu_id = "TRACE_VCPU_EVENT_COUNT"
+ vcpu_id = "TRACE_VCPU_EVENT_NONE"
out('TraceEvent %(event)s = {',
' .id = %(id)s,',
' .vcpu_id = %(vcpu_id)s,',
@@ -41,16 +46,17 @@ def generate(events, backend):
' .dstate = &%(dstate)s ',
'};',
event = e.api(e.QEMU_EVENT),
- id = "TRACE_" + e.name.upper(),
+ id = id,
vcpu_id = vcpu_id,
name = e.name,
sstate = "TRACE_%s_ENABLED" % e.name.upper(),
dstate = e.api(e.QEMU_DSTATE))
- out('TraceEvent *trace_events[TRACE_EVENT_COUNT] = {')
+ out('TraceEvent *trace_events[] = {')
for e in events:
out(' &%(event)s,', event = e.api(e.QEMU_EVENT))
- out('};',
+ out(' NULL,',
+ '};',
'')
diff --git a/scripts/tracetool/format/events_h.py b/scripts/tracetool/format/events_h.py
index 80a66c57d5..ca6d730519 100644
--- a/scripts/tracetool/format/events_h.py
+++ b/scripts/tracetool/format/events_h.py
@@ -29,27 +29,12 @@ def generate(events, backend):
out('extern TraceEvent %(event)s;',
event = e.api(e.QEMU_EVENT))
- # event identifiers
- out('typedef enum {')
-
- for e in events:
- out(' TRACE_%s,' % e.name.upper())
-
- out(' TRACE_EVENT_COUNT',
- '} TraceEventID;')
-
for e in events:
out('extern uint16_t %s;' % e.api(e.QEMU_DSTATE))
- # per-vCPU event identifiers
- out('typedef enum {')
-
- for e in events:
- if "vcpu" in e.properties:
- out(' TRACE_VCPU_%s,' % e.name.upper())
+ numvcpu = len([e for e in events if "vcpu" in e.properties])
- out(' TRACE_VCPU_EVENT_COUNT',
- '} TraceEventVCPUID;')
+ out("#define TRACE_VCPU_EVENT_COUNT %d" % numvcpu)
# static state
for e in events:
diff --git a/scripts/tracetool/format/h.py b/scripts/tracetool/format/h.py
index 3763e9aecb..64a6680fdc 100644
--- a/scripts/tracetool/format/h.py
+++ b/scripts/tracetool/format/h.py
@@ -32,8 +32,7 @@ def generate(events, backend):
if "vcpu" in e.properties:
trace_cpu = next(iter(e.args))[1]
cond = "trace_event_get_vcpu_state(%(cpu)s,"\
- " TRACE_%(id)s,"\
- " TRACE_VCPU_%(id)s)"\
+ " TRACE_%(id)s)"\
% dict(
cpu=trace_cpu,
id=e.name.upper())
diff --git a/trace/control-internal.h b/trace/control-internal.h
index 808f85dc06..9abbc96bcb 100644
--- a/trace/control-internal.h
+++ b/trace/control-internal.h
@@ -25,20 +25,20 @@ static inline bool trace_event_is_pattern(const char *str)
return strchr(str, '*') != NULL;
}
-static inline TraceEventID trace_event_get_id(TraceEvent *ev)
+static inline uint32_t trace_event_get_id(TraceEvent *ev)
{
assert(ev != NULL);
return ev->id;
}
-static inline TraceEventVCPUID trace_event_get_vcpu_id(TraceEvent *ev)
+static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev)
{
return ev->vcpu_id;
}
static inline bool trace_event_is_vcpu(TraceEvent *ev)
{
- return ev->vcpu_id != TRACE_VCPU_EVENT_COUNT;
+ return ev->vcpu_id != TRACE_VCPU_EVENT_NONE;
}
static inline const char * trace_event_get_name(TraceEvent *ev)
@@ -62,12 +62,13 @@ static inline bool trace_event_get_state_dynamic(TraceEvent *ev)
return unlikely(trace_events_enabled_count) && *ev->dstate;
}
-static inline bool trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu,
- TraceEventVCPUID id)
+static inline bool
+trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu,
+ uint32_t vcpu_id)
{
/* it's on fast path, avoid consistency checks (asserts) */
if (unlikely(trace_events_enabled_count)) {
- return test_bit(id, vcpu->trace_dstate);
+ return test_bit(vcpu_id, vcpu->trace_dstate);
} else {
return false;
}
@@ -76,10 +77,10 @@ static inline bool trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu,
static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu,
TraceEvent *ev)
{
- TraceEventVCPUID id;
+ uint32_t vcpu_id;
assert(trace_event_is_vcpu(ev));
- id = trace_event_get_vcpu_id(ev);
- return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, id);
+ vcpu_id = trace_event_get_vcpu_id(ev);
+ return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id);
}
#endif /* TRACE__CONTROL_INTERNAL_H */
diff --git a/trace/control-target.c b/trace/control-target.c
index 3b55941414..7ebf6e0bcb 100644
--- a/trace/control-target.c
+++ b/trace/control-target.c
@@ -60,7 +60,7 @@ void trace_event_set_state_dynamic(TraceEvent *ev, bool state)
void trace_event_set_vcpu_state_dynamic(CPUState *vcpu,
TraceEvent *ev, bool state)
{
- TraceEventVCPUID vcpu_id;
+ uint32_t vcpu_id;
bool state_pre;
assert(trace_event_get_state_static(ev));
assert(trace_event_is_vcpu(ev));
diff --git a/trace/control.c b/trace/control.c
index 9035846b26..6b32511d60 100644
--- a/trace/control.c
+++ b/trace/control.c
@@ -105,7 +105,7 @@ void trace_event_iter_init(TraceEventIter *iter, const char *pattern)
TraceEvent *trace_event_iter_next(TraceEventIter *iter)
{
- while (iter->event < TRACE_EVENT_COUNT) {
+ while (trace_events[iter->event] != NULL) {
TraceEvent *ev = trace_events[iter->event];
iter->event++;
if (!iter->pattern ||
diff --git a/trace/control.h b/trace/control.h
index 10d4aba78c..cccd2a295e 100644
--- a/trace/control.h
+++ b/trace/control.h
@@ -18,17 +18,6 @@ typedef struct TraceEventIter {
const char *pattern;
} TraceEventIter;
-/**
- * TraceEventID:
- *
- * Unique tracing event identifier.
- *
- * These are named as 'TRACE_${EVENT_NAME}'.
- *
- * See also: "trace/generated-events.h"
- */
-enum TraceEventID;
-
/**
* trace_event_iter_init:
@@ -76,17 +65,17 @@ static bool trace_event_is_pattern(const char *str);
*
* Get the identifier of an event.
*/
-static TraceEventID trace_event_get_id(TraceEvent *ev);
+static uint32_t trace_event_get_id(TraceEvent *ev);
/**
* trace_event_get_vcpu_id:
*
* Get the per-vCPU identifier of an event.
*
- * Special value #TRACE_VCPU_EVENT_COUNT means the event is not vCPU-specific
+ * Special value #TRACE_VCPU_EVENT_NONE means the event is not vCPU-specific
* (does not have the "vcpu" property).
*/
-static TraceEventVCPUID trace_event_get_vcpu_id(TraceEvent *ev);
+static uint32_t trace_event_get_vcpu_id(TraceEvent *ev);
/**
* trace_event_is_vcpu:
@@ -104,14 +93,12 @@ static const char * trace_event_get_name(TraceEvent *ev);
/**
* trace_event_get_state:
- * @id: Event identifier.
+ * @id: Event identifier name.
*
* Get the tracing state of an event (both static and dynamic).
*
* If the event has the disabled property, the check will have no performance
* impact.
- *
- * As a down side, you must always use an immediate #TraceEventID value.
*/
#define trace_event_get_state(id) \
((id ##_ENABLED) && trace_event_get_state_dynamic_by_id(id))
@@ -119,19 +106,18 @@ static const char * trace_event_get_name(TraceEvent *ev);
/**
* trace_event_get_vcpu_state:
* @vcpu: Target vCPU.
- * @id: Event identifier (TraceEventID).
- * @vcpu_id: Per-vCPU event identifier (TraceEventVCPUID).
+ * @id: Event identifier name.
*
* Get the tracing state of an event (both static and dynamic) for the given
* vCPU.
*
* If the event has the disabled property, the check will have no performance
* impact.
- *
- * As a down side, you must always use an immediate #TraceEventID value.
*/
-#define trace_event_get_vcpu_state(vcpu, id, vcpu_id) \
- ((id ##_ENABLED) && trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id))
+#define trace_event_get_vcpu_state(vcpu, id) \
+ ((id ##_ENABLED) && \
+ trace_event_get_vcpu_state_dynamic_by_vcpu_id( \
+ vcpu, _ ## id ## _EVENT.vcpu_id))
/**
* trace_event_get_state_static:
diff --git a/trace/event-internal.h b/trace/event-internal.h
index 58f0551745..f63500b37e 100644
--- a/trace/event-internal.h
+++ b/trace/event-internal.h
@@ -10,6 +10,12 @@
#ifndef TRACE__EVENT_INTERNAL_H
#define TRACE__EVENT_INTERNAL_H
+/*
+ * Special value for TraceEvent.vcpu_id field to indicate
+ * that the event is not VCPU specific
+ */
+#define TRACE_VCPU_EVENT_NONE ((uint32_t)-1)
+
/**
* TraceEvent:
* @id: Unique event identifier.
diff --git a/trace/simple.c b/trace/simple.c
index 2f09dafcbc..2ec32e159c 100644
--- a/trace/simple.c
+++ b/trace/simple.c
@@ -17,8 +17,8 @@
#include "trace/control.h"
#include "trace/simple.h"
-/** Trace file header event ID */
-#define HEADER_EVENT_ID (~(uint64_t)0) /* avoids conflicting with TraceEventIDs */
+/** Trace file header event ID, picked to avoid conflict with real event IDs */
+#define HEADER_EVENT_ID (~(uint64_t)0)
/** Trace file magic number */
#define HEADER_MAGIC 0xf2b177cb0aa429b4ULL
@@ -58,7 +58,7 @@ static char *trace_file_name;
/* * Trace buffer entry */
typedef struct {
- uint64_t event; /* TraceEventID */
+ uint64_t event; /* event ID value */
uint64_t timestamp_ns;
uint32_t length; /* in bytes */
uint32_t pid;
@@ -202,7 +202,7 @@ void trace_record_write_str(TraceBufferRecord *rec, const char *s, uint32_t slen
rec->rec_off = write_to_buffer(rec->rec_off, (void*)s, slen);
}
-int trace_record_start(TraceBufferRecord *rec, TraceEventID event, size_t datasize)
+int trace_record_start(TraceBufferRecord *rec, uint32_t event, size_t datasize)
{
unsigned int idx, rec_off, old_idx, new_idx;
uint32_t rec_len = sizeof(TraceRecord) + datasize;
diff --git a/trace/simple.h b/trace/simple.h
index 1e7de45575..17ce47260f 100644
--- a/trace/simple.h
+++ b/trace/simple.h
@@ -33,7 +33,7 @@ typedef struct {
*
* @arglen number of bytes required for arguments
*/
-int trace_record_start(TraceBufferRecord *rec, TraceEventID id, size_t arglen);
+int trace_record_start(TraceBufferRecord *rec, uint32_t id, size_t arglen);
/**
* Append a 64-bit argument to a trace record
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-01 19:20:50 +0000