From: Ingo Molnar <mingo@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH 00/19] [GIT PULL][v3.6] ftrace: Allow kprobes to work with ftace
Date: Tue, 21 Aug 2012 11:26:06 +0200 [thread overview]
Message-ID: <20120821092606.GA12202@gmail.com> (raw)
In-Reply-To: <20120721021943.274162381@goodmis.org>
* Steven Rostedt <rostedt@goodmis.org> wrote:
>
> Ingo,
>
> This patch series extends ftrace function tracing utility to be
> more dynamic for its users. It allows for data passing to the callback
> functions, as well as reading regs as if a breakpoint were to trigger
> at function entry.
>
> The main goal of this patch series was to allow kprobes to use ftrace
> as an optimized probe point when a probe is placed on an ftrace nop.
> With lots of help from Masami Hiramatsu, and going through lots of
> iterations, we finally came up with a good solution.
>
> I've tested it vigorously (although, like always, there may be some
> subtle bug), but I feel it is ready for inclussion for the 3.6 merge
> window.
>
> Please pull the latest tip/perf/core tree, which can be found at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
> tip/perf/core
>
> Head SHA1: aa5e57294ac5614ac395a9733d3e050eace4764e
>
>
> Masami Hiramatsu (5):
> ftrace: add ftrace_set_filter_ip() for address based filter
> kprobes: cleanup to separate probe-able check
> kprobes: Move locks into appropriate functions
> kprobes: introduce ftrace based optimization
> kprobes/x86: ftrace based optimization for x86
>
> Steven Rostedt (13):
> ftrace: Pass ftrace_ops as third parameter to function trace callback
> ftrace: Consolidate arch dependent functions with 'list' function
> ftrace: Return pt_regs to function trace callback
> ftrace/x86_32: Push ftrace_ops in as 3rd parameter to function tracer
> ftrace/x86: Add separate function to save regs
> ftrace/x86: Add save_regs for i386 function calls
> ftrace/x86: Remove function_trace_stop check from graph caller
> ftrace: Add default recursion protection for function tracing
> ftrace: Only compile ftrace selftest if selftests are enabled
> ftrace: Add selftest to test function trace recursion protection
> ftrace: Add selftest to test function save-regs support
> kprobes: Inverse taking of module_mutex with kprobe_mutex
> ftrace: Make ftrace_location() a nop on !DYNAMIC_FTRACE
>
> Uros Bizjak (1):
> ftrace/x86_32: Simplify parameter setup for ftrace_regs_caller
>
> ----
> arch/x86/include/asm/ftrace.h | 49 +++---
> arch/x86/include/asm/kprobes.h | 1 +
> arch/x86/kernel/entry_32.S | 75 ++++++++-
> arch/x86/kernel/entry_64.S | 96 +++++++++--
> arch/x86/kernel/ftrace.c | 73 ++++++++-
> arch/x86/kernel/kprobes.c | 48 ++++++
> include/linux/ftrace.h | 158 ++++++++++++++++--
> include/linux/kprobes.h | 27 ++++
> kernel/kprobes.c | 250 ++++++++++++++++++++--------
> kernel/trace/Makefile | 2 +
> kernel/trace/ftrace.c | 322 ++++++++++++++++++++++++++++---------
> kernel/trace/trace.h | 2 +-
> kernel/trace/trace_event_perf.c | 3 +-
> kernel/trace/trace_events.c | 4 +-
> kernel/trace/trace_functions.c | 14 +-
> kernel/trace/trace_irqsoff.c | 5 +-
> kernel/trace/trace_sched_wakeup.c | 5 +-
> kernel/trace/trace_selftest.c | 277 ++++++++++++++++++++++++++++++-
> kernel/trace/trace_stack.c | 4 +-
> 19 files changed, 1199 insertions(+), 216 deletions(-)
Pulled, thanks a lot Steve!
Ingo
prev parent reply other threads:[~2012-08-21 9:26 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-21 2:19 [PATCH 00/19] [GIT PULL][v3.6] ftrace: Allow kprobes to work with ftace Steven Rostedt
2012-07-21 2:19 ` [PATCH 01/19] ftrace: Pass ftrace_ops as third parameter to function trace callback Steven Rostedt
2012-07-21 2:19 ` [PATCH 02/19] ftrace: Consolidate arch dependent functions with list function Steven Rostedt
2012-07-21 2:19 ` [PATCH 03/19] ftrace: Return pt_regs to function trace callback Steven Rostedt
2012-07-21 2:19 ` [PATCH 04/19] ftrace/x86_32: Push ftrace_ops in as 3rd parameter to function tracer Steven Rostedt
2012-07-21 2:19 ` [PATCH 05/19] ftrace/x86: Add separate function to save regs Steven Rostedt
2012-07-21 2:19 ` [PATCH 06/19] ftrace/x86: Add save_regs for i386 function calls Steven Rostedt
2012-07-21 2:19 ` [PATCH 07/19] ftrace/x86_32: Simplify parameter setup for ftrace_regs_caller Steven Rostedt
2012-07-23 4:06 ` Masami Hiramatsu
2012-07-21 2:19 ` [PATCH 08/19] ftrace/x86: Remove function_trace_stop check from graph caller Steven Rostedt
2012-07-21 2:19 ` [PATCH 09/19] ftrace: Add default recursion protection for function tracing Steven Rostedt
2012-07-21 2:19 ` [PATCH 10/19] ftrace: Only compile ftrace selftest if selftests are enabled Steven Rostedt
2012-07-21 2:19 ` [PATCH 11/19] ftrace: Add selftest to test function trace recursion protection Steven Rostedt
2012-07-21 2:19 ` [PATCH 12/19] ftrace: Add selftest to test function save-regs support Steven Rostedt
2012-07-21 2:19 ` [PATCH 13/19] ftrace: add ftrace_set_filter_ip() for address based filter Steven Rostedt
2012-07-21 2:19 ` [PATCH 14/19] kprobes: Inverse taking of module_mutex with kprobe_mutex Steven Rostedt
2012-07-21 2:19 ` [PATCH 15/19] kprobes: cleanup to separate probe-able check Steven Rostedt
2012-07-21 2:19 ` [PATCH 16/19] kprobes: Move locks into appropriate functions Steven Rostedt
2012-07-21 2:20 ` [PATCH 17/19] ftrace: Make ftrace_location() a nop on !DYNAMIC_FTRACE Steven Rostedt
2012-07-21 2:20 ` [PATCH 18/19] kprobes: introduce ftrace based optimization Steven Rostedt
2012-07-21 2:20 ` [PATCH 19/19] kprobes/x86: ftrace based optimization for x86 Steven Rostedt
2012-07-30 15:51 ` [PATCH 00/19] [GIT PULL][v3.6] ftrace: Allow kprobes to work with ftace Steven Rostedt
2012-07-31 14:37 ` [GIT PULL][v3.7] (was: Re: [PATCH 00/19] [GIT PULL][v3.6]) " Steven Rostedt
2012-07-31 15:12 ` [PATCH 00/19] [GIT PULL][v3.6] " Ingo Molnar
2012-08-07 13:23 ` Steven Rostedt
2012-08-21 9:26 ` Ingo Molnar [this message]
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