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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Jiri Olsa <jolsa@kernel.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	linux-trace-users@vger.kernel.org
Subject: [RFC][PATCH 0/4] tracing: Add event-fork to trace tasks children
Date: Tue, 19 Apr 2016 10:34:21 -0400	[thread overview]
Message-ID: <20160419143421.829909157@goodmis.org> (raw)

This code adds the event-fork option that, when set, will have tasks
with their PIDs in set_event_pid add their children PIDs when they
fork. It will also remove their PID from the file on exit.

Thanks to HPA for suggesting the bitmask over the more complex special
"hash" algorithm I originally had. It simplified the code and makes
it more robust.

Steven Rostedt (3):
      tracing: Rename check_ignore_pid() to ignore_this_task()
      tracing: Use pid bitmap instead of a pid array for set_event_pid
      tracing: Add infrastructure to allow set_event_pid to follow children

Steven Rostedt (Red Hat) (1):
      tracing: Update the documentation to describe "event-fork" option

----
 Documentation/trace/ftrace.txt |  34 +++--
 kernel/trace/trace.c           |   3 +
 kernel/trace/trace.h           |   7 +-
 kernel/trace/trace_events.c    | 297 +++++++++++++++++++++++------------------
 4 files changed, 201 insertions(+), 140 deletions(-)

             reply	other threads:[~2016-04-19 14:37 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-19 14:34 Steven Rostedt [this message]
2016-04-19 14:34 ` [RFC][PATCH 1/4] tracing: Rename check_ignore_pid() to ignore_this_task() Steven Rostedt
2016-04-19 14:34 ` [RFC][PATCH 2/4] tracing: Use pid bitmap instead of a pid array for set_event_pid Steven Rostedt
     [not found]   ` <1694657549.62933.1461084928341.JavaMail.zimbra@efficios.com>
2016-04-19 17:19     ` Steven Rostedt
     [not found]       ` <4ACF15B6-D344-4647-9CF8-CEDE5BF5EF70@zytor.com>
2016-04-19 19:41         ` Steven Rostedt
     [not found]           ` <2093660141.63332.1461097049611.JavaMail.zimbra@efficios.com>
2016-04-19 20:50             ` Steven Rostedt
     [not found]               ` <568915868.63547.1461100941927.JavaMail.zimbra@efficios.com>
2016-04-19 22:49                 ` Steven Rostedt
     [not found]                   ` <2099338042.63665.1461106754326.JavaMail.zimbra@efficios.com>
2016-04-19 23:06                     ` Steven Rostedt
     [not found]   ` <20160422024530.GA1790@sejong>
2016-04-22 15:30     ` Steven Rostedt
2016-04-19 14:34 ` [RFC][PATCH 3/4] tracing: Add infrastructure to allow set_event_pid to follow children Steven Rostedt
     [not found]   ` <1887707510.62932.1461084911586.JavaMail.zimbra@efficios.com>
2016-04-19 17:13     ` Steven Rostedt
2016-04-19 14:34 ` [RFC][PATCH 4/4] tracing: Update the documentation to describe "event-fork" option Steven Rostedt
     [not found] ` <5716E3E8.7000609@redhat.com>
2016-04-20  2:30   ` [RFC][PATCH 0/4] tracing: Add event-fork to trace tasks children Steven Rostedt

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