From: Jason Baron <jbaron@redhat.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Steven Rostedt <rostedt@goodmis.org>,
Peter Zijlstra <peterz@infradead.org>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
Jiaying Zhang <jiayingz@google.com>,
Martin Bligh <mbligh@google.com>, Li Zefan <lizf@cn.fujitsu.com>,
Masami Hiramatsu <mhiramat@redhat.com>
Subject: Re: [GIT PULL] tracing: Syscalls trace events + perf support
Date: Wed, 12 Aug 2009 10:37:02 -0400 [thread overview]
Message-ID: <20090812143702.GC2711@redhat.com> (raw)
In-Reply-To: <20090812142917.GA19882@elte.hu>
On Wed, Aug 12, 2009 at 04:29:17PM +0200, Ingo Molnar wrote:
> * Jason Baron <jbaron@redhat.com> wrote:
>
> > On Wed, Aug 12, 2009 at 01:14:36PM +0200, Ingo Molnar wrote:
>
> > > another thing: could we please also have a generic, highlevel
> > > tracepoint (in addition to the specific tracepoints) that
> > > enumerates the raw syscall Nr and the parameters it gets - in a
> > > single tracepoint?
> >
> > The specific tracepoints, are all layered on 2 (entry, exit)
> > generic tracepoints already. So this shouldn't be too hard...The
> > parameters it gets might be tricky, since there are a variable
> > number b/w different syscalls?
>
> We should just list all ~6 of them. It's up to the sampling entity
> to decide which ones (if any) is relevant.
>
> At least on x86 the syscall arguments will always have a value when
> the syscall entry code is called. (they are in GP registers)
>
> Ingo
ok, makes sense. I'll add to the todo list.
-Jason
next prev parent reply other threads:[~2009-08-12 14:38 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-11 18:48 [GIT PULL] tracing: Syscalls trace events + perf support Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 01/16] tracing: Rename set_tracer_flags()'s local variable trace_flags Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 02/16] tracing: Map syscall name to number Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 03/16] tracing: Call arch_init_ftrace_syscalls at boot Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 04/16] tracing: Add DECLARE_TRACE_WITH_CALLBACK() macro Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 05/16] tracing: Add syscall tracepoints Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 06/16] tracing: Update FTRACE_SYSCALL_MAX Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 07/16] tracing: Raw_init() bailout in trace event register fail case Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 08/16] tracing: Add ftrace_event_call void * 'data' field Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 09/16] tracing: Add trace events for each syscall entry/exit Frederic Weisbecker
2009-08-11 18:48 ` [PATCH 10/16] tracing: Add individual syscalls tracepoint id support Frederic Weisbecker
2009-08-11 18:49 ` [PATCH 11/16] tracing: Add perf counter support for syscalls tracing Frederic Weisbecker
2009-08-11 18:49 ` [PATCH 12/16] tracing: Add more namespace area to 'perf list' output Frederic Weisbecker
2009-08-11 18:49 ` [PATCH 13/16] tracing: Convert x86_64 mmap and uname to use DEFINE_SYSCALL Frederic Weisbecker
2009-08-11 18:49 ` [PATCH 14/16] tracing: Add ftrace event call parameter to its field descriptor handler Frederic Weisbecker
2009-08-11 18:49 ` [PATCH 15/16] tracing: Add fields format definition for syscall events Frederic Weisbecker
2009-08-19 17:12 ` Masami Hiramatsu
2009-08-19 17:37 ` Frederic Weisbecker
2009-08-20 1:07 ` Li Zefan
2009-08-11 18:49 ` [PATCH 16/16] tracing: Support for syscall events raw records in perfcounters Frederic Weisbecker
2009-08-12 9:11 ` [GIT PULL] tracing: Syscalls trace events + perf support Ingo Molnar
2009-08-12 11:03 ` Ingo Molnar
2009-08-12 11:14 ` Ingo Molnar
2009-08-12 14:25 ` Jason Baron
2009-08-12 14:29 ` Ingo Molnar
2009-08-12 14:37 ` Jason Baron [this message]
2009-08-12 11:33 ` Frederic Weisbecker
2009-08-12 13:59 ` Jason Baron
2009-08-12 14:30 ` Ingo Molnar
2009-08-18 0:46 ` Paul Mundt
2009-08-18 7:32 ` Ingo Molnar
2009-08-18 7:32 ` Ingo Molnar
2009-08-18 8:51 ` [S390] ftrace: update system call tracer support Ingo Molnar
2009-08-18 8:59 ` Martin Schwidefsky
2009-08-18 10:05 ` Ingo Molnar
2009-08-18 10:22 ` Martin Schwidefsky
2009-08-18 14:56 ` Jason Baron
2009-08-18 8:51 ` Ingo Molnar
2009-08-18 10:25 ` [GIT PULL] tracing: Syscalls trace events + perf support Frederic Weisbecker
2009-08-18 10:25 ` Frederic Weisbecker
2009-08-18 11:06 ` Ingo Molnar
2009-08-18 11:56 ` Paul Mundt
2009-08-12 16:33 ` Masami Hiramatsu
2009-08-12 17:02 ` Masami Hiramatsu
2009-08-12 19:13 ` [RFD] Kprobes/Kretprobes " Frederic Weisbecker
2009-08-12 20:20 ` Masami Hiramatsu
2009-08-13 8:02 ` Ingo Molnar
2009-08-12 21:09 ` Peter Zijlstra
2009-08-12 21:27 ` Masami Hiramatsu
2009-08-12 21:37 ` Frederic Weisbecker
2009-08-12 21:35 ` Frederic Weisbecker
2009-08-14 15:05 ` Masami Hiramatsu
2009-08-15 14:33 ` Ingo Molnar
2009-08-17 21:58 ` Masami Hiramatsu
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