This patch defines the "disable" trace event state to always use the "nop"
backend.
As a side-effect, all events are now enabled (without "disable") by default, as
all backends (except "stderr") have programmatic support for dynamically
(de)activating each trace event.
In order to make this true, the "simple" backend now has a "-trace
events=<file>" argument to let the user select which events must be enabled from
the very beginning.
NOTES:
* Parsing of -trace arguments is not done in the OS-specific frontends.
Signed-off-by: Lluís Vilanova <vilan...@ac.upc.edu>
---
Changes in v2:
* Documentation fixes.
* Seggregate whitespace/indentation changes.
* Minor code beautifications.
* Make all -trace suboptions explicit.
* Fix minor comments from Stefan.
* Minor trace-events format fixes.
* Integrate changes from Fabien.
* Rebase on qemu.git/master (c8f930c0eeb696d638f4d4bf654e955fa44ff40f).
Lluís Vilanova (11):
minor whitespace/indentation fixes
docs/tracing.txt: minor documentation fixes
trace: [ust] fix generation of 'trace.c' on events without args
trace: [trace-events] fix print formats in some events
trace: [simple] minor code fixes on conditional compilation
trace: generalize the "property" concept in the trace-events file
trace-state: always use the "nop" backend on events with the "disable"
keyword
trace-state: [simple] disable all trace points by default
trace-state: [simple] add "-trace events" argument to control initial
state
trace-state: [stderr] add support for dynamically enabling/disabling
events
trace: enable all events
Makefile.objs | 8 +
configure | 33 ++--
docs/tracing.txt | 50 +++--
hmp-commands.hx | 38 ++--
monitor.c | 24 ++-
qemu-config.c | 8 +
qemu-options.hx | 26 ++-
scripts/tracetool | 121 +++++++------
simpletrace.h | 7 -
stderrtrace.c | 24 +++
stderrtrace.h | 14 ++
trace-events | 491 ++++++++++++++++++++++++++---------------------------
vl.c | 104 ++++++++---
13 files changed, 530 insertions(+), 418 deletions(-)
create mode 100644 stderrtrace.c
create mode 100644 stderrtrace.h
