diff options
author | Daniel P. Berrange <berrange@redhat.com> | 2016-10-04 14:35:49 +0100 |
---|---|---|
committer | Stefan Hajnoczi <stefanha@redhat.com> | 2016-10-12 09:35:54 +0200 |
commit | ef4c9fc8542e06b1d567172c04b0c0377c7ab0c5 (patch) | |
tree | b10d94d545215e19252f78ed332d948fd56ad58e /scripts/tracetool | |
parent | 79218be42b835cbc7bd1b0fbd07d115add6e7605 (diff) |
trace: remove the TraceEventID and TraceEventVCPUID enums
The TraceEventID and TraceEventVCPUID enums constants are
no longer actually used for anything critical.
The TRACE_EVENT_COUNT limit is used to determine the size
of the TraceEvents array, and can be removed if we just
NULL terminate the array instead.
The TRACE_VCPU_EVENT_COUNT limit is used as a magic value
for marking non-vCPU events, and also for declaring the
size of the trace dstate mask in the CPUState struct.
The former usage can be replaced by a dedicated constant
TRACE_EVENT_VCPU_NONE, defined as (uint32_t)-1. For the
latter usage, we can simply define a constant for the
number of VCPUs, avoiding the need for the full enum.
The only other usages of the enum values can be replaced
by accesing the id/vcpu_id fields via the named TraceEvent
structs.
Reviewed-by: LluĂs Vilanova <vilanova@ac.upc.edu>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1475588159-30598-11-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts/tracetool')
-rw-r--r-- | scripts/tracetool/backend/simple.py | 4 | ||||
-rw-r--r-- | scripts/tracetool/format/events_c.py | 16 | ||||
-rw-r--r-- | scripts/tracetool/format/events_h.py | 19 | ||||
-rw-r--r-- | scripts/tracetool/format/h.py | 3 |
4 files changed, 16 insertions, 26 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()) |