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[Qemu-devel] [PATCH v7 0/3] Simpletrace v2: Support multiple args, strin
From: |
Harsh Prateek Bora |
Subject: |
[Qemu-devel] [PATCH v7 0/3] Simpletrace v2: Support multiple args, strings. |
Date: |
Tue, 3 Jul 2012 14:50:56 +0530 |
Existing simpletrace backend allows to trace at max 6 args and does not
support strings. This newer tracelog format gets rid of fixed size records
and therefore allows to trace variable number of args including strings.
Sample trace:
v9fs_version 0.000 tag=0xffff id=0x64 msize=0x2000 version=9P2000.L
v9fs_version_return 6.705 tag=0xffff id=0x64 msize=0x2000 version=9P2000.L
v9fs_attach 174.467 tag=0x1 id=0x68 fid=0x0 afid=0xffffffffffffffff
uname=nobody aname=
v9fs_attach_return 4720.454 tag=0x1 id=0x68 type=0xffffffffffffff80
version=0x4f2a4dd0 path=0x220ea6
v7:
- Introduced clear_buffer_range to rest buffer range after consuming record.
- Introduced cap on string length using MAX_TRACE_STRLEN (currently set to 512)
to avoid calculating wrong length when string length is > sizeof(uint32_t).
- Reverted idx refresh back to inside while-lipp in writeout_thread.
v6:
- Corrected flush condition and reverted un-necessary check in get_trace_record
- moved idx refresh out of while-loop in writeout_thread, see comments in code.
v5:
- Addressed Stefan's review comments on v4 series.
- Inroduced code to handle corrupted records due to racing tracers.
v4:
- removed unused safe_strlen interface (missed in v3).
v3:
- Addressed Stefan's review comments on v2 series
v2:
- moved elimination of st_print_trace to 1/3 patch
- use sizeof(TraceRecord) for #define ST_REC_HDR_LEN
v1:
- Simpletrace v2 for the new (pythonized) tracetool
Harsh Prateek Bora (3):
monitor: remove unused do_info_trace
Simpletrace v2: Support multiple arguments, strings.
Update simpletrace.py for new log format
monitor.c | 16 --
scripts/simpletrace.py | 116 +++++++++------
scripts/tracetool/backend/simple.py | 84 ++++++++---
trace/simple.c | 274 +++++++++++++++++++++--------------
trace/simple.h | 40 ++++-
5 files changed, 335 insertions(+), 195 deletions(-)
--
1.7.10.4
- [Qemu-devel] [PATCH v7 0/3] Simpletrace v2: Support multiple args, strings.,
Harsh Prateek Bora <=
[Qemu-devel] [PATCH v7 3/3] Update simpletrace.py for new log format, Harsh Prateek Bora, 2012/07/03
[Qemu-devel] [PATCH v7 1/3] monitor: remove unused do_info_trace, Harsh Prateek Bora, 2012/07/03
Re: [Qemu-devel] [PATCH v7 0/3] Simpletrace v2: Support multiple args, strings., Stefan Hajnoczi, 2012/07/17