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[Qemu-devel] [PATCH v3 0/4] trace: make systemtap easier to use for simp
From: |
Daniel P . Berrangé |
Subject: |
[Qemu-devel] [PATCH v3 0/4] trace: make systemtap easier to use for simple logging |
Date: |
Tue, 22 Jan 2019 16:49:36 +0000 |
This is a followup to
v1: https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg04173.html
v2: https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg04759.html
Changed in v3:
- g_strndup the QXL log_buf before printing to avoid a race
with guest removing the nul terminator (Stefan)
- Add filtering of PIDs with "-p PID" arg to qemu-trace-stap
- Add a man page for qemu-trace-stap (Eric)
- Remove examples in docs/devel/tracing.txt and just refer
people to the above man page.
- Use strerror(errno) instead of raw errno in vfio traces (Eric/Alex)
- Quote probe wildcards to be shell glob safe (Eric)
- Mention explicitly that it is launched separately from QEMU (Eric)
Changed in v2:
- Fix safety of QXL logging
- Handle format specifier macros is a more reliable manner
- Fix trace-events files missing newline
- Remove use of %m formats
Daniel P. Berrangé (4):
display: ensure qxl log_buf is a nul terminated string
trace: enforce that every trace-events file has a final newline
trace: forbid use of %m in trace event format strings
trace: add ability to do simple printf logging via systemtap
MAINTAINERS | 1 +
Makefile | 10 ++
Makefile.target | 11 +-
docs/devel/tracing.txt | 4 +
hw/display/qxl.c | 14 ++-
hw/display/trace-events | 2 +-
hw/gpio/trace-events | 2 +-
hw/vfio/pci.c | 2 +-
hw/vfio/trace-events | 2 +-
scripts/qemu-trace-stap | 174 +++++++++++++++++++++++++++
scripts/qemu-trace-stap.texi | 139 +++++++++++++++++++++
scripts/tracetool/__init__.py | 6 +
scripts/tracetool/format/log_stap.py | 127 +++++++++++++++++++
13 files changed, 485 insertions(+), 9 deletions(-)
create mode 100755 scripts/qemu-trace-stap
create mode 100644 scripts/qemu-trace-stap.texi
create mode 100644 scripts/tracetool/format/log_stap.py
--
2.20.1
- [Qemu-devel] [PATCH v3 0/4] trace: make systemtap easier to use for simple logging,
Daniel P . Berrangé <=