linux-kernel - [PATCH 0/4] perf trace: Add filter Suppport, V2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <4AD3E34C.1020301@cn.fujitsu.com>
Date:	Tue, 13 Oct 2009 10:17:48 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tzanussi@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/4] perf trace: Add filter Suppport, V2

This patchset adds filter support for perf counter, so not all
profile events are recorded but only those match the filters
we set.

An example:

 #./perf record -R -f -e irq:irq_handler_entry --filter irq==18
 ^C
 # ./perf trace
            perf-4303  ... irq_handler_entry: irq=18 handler=eth0
            init-0     ... irq_handler_entry: irq=18 handler=eth0
            init-0     ... irq_handler_entry: irq=18 handler=eth0
            init-0     ... irq_handler_entry: irq=18 handler=eth0
            init-0     ... irq_handler_entry: irq=18 handler=eth0

The syntax of filter expressions can be found in
Documentation/trace/events.txt.

Major changes from v1:

- Make filters per perf event, instead of per tracepoint.

- Use "--filter" to set a filter for a trace event, instead of
  mixing it into "-e" option.

---
 include/linux/ftrace_event.h       |   11 +-
 include/linux/perf_counter.h       |    1 +
 include/linux/perf_event.h         |    7 +
 kernel/perf_event.c                |   81 +++++++++-
 kernel/trace/trace.h               |    6 +-
 kernel/trace/trace_events_filter.c |  320 +++++++++++++++++++++---------------
 tools/perf/builtin-record.c        |   15 ++-
 tools/perf/util/parse-events.c     |   26 +++-
 tools/perf/util/parse-events.h     |    2 +
 9 files changed, 322 insertions(+), 147 deletions(-)


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/