On Mon 2016-02-08 13:12:45, Torsten Duwe wrote:
> On Mon, Feb 08, 2016 at 11:34:06AM +0100, Petr Mladek wrote:
> > On Sat 2016-02-06 11:32:43, Torsten Duwe wrote:
> > > On Fri, Feb 05, 2016 at 05:18:34PM +0100, Petr Mladek wrote:
> > > [...]
> > > > more complicated. Whem I think about it, the change below does similar
> > > > job and looks more strightforwad:
> > >
> > > Had I only looked closer. That's exactly how I thought it would work
> > > in the first place. I'd call that a fix. Full ACK from my side.
> >
> > Feel free to merge this into your patch. Or do you want to do
> > this in a separate one, please?
>
> My Kconfig/Makefile changes depend on it, but OTOH this change (Fix!)
> is independent.
>
> IMHO the right thing would be you resend your second mail from Feb-05,
> with your sign-off, my ack, FWIW, and Steven checks it in ;-)
Please, find it below. I guess that it should be applied before
the check causing the build error. It will help to keep
the tree bisectable.
From 2b0fcb678d7720d03f9c9f233b61ed9ed4d420b3 Mon Sep 17 00:00:00 2001
From: Petr Mladek <pmla...@suse.com>
Date: Mon, 8 Feb 2016 16:03:03 +0100
Subject: [PATCH] ftrace: Allow to explicitly disable the build of the dynamic
ftrace with regs
This patch allows to explicitly disable
CONFIG_DYNAMIC_FTRACE_WITH_REGS. We will need to do so on
PPC with a broken gcc. This situation will be detected at
buildtime and could not be handled by Kbuild automatically.
Also it fixes the prompt of DYNAMIC_FTRACE. The uppercase
better fits the style of the other menu entries.
This patch does not change the default value.
Signed-off-by: Petr Mladek <pmla...@suse.com>
Acked-by: Torsten Duwe <d...@lst.de>
---
kernel/trace/Kconfig | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index a138f6d866ae..de6dab0f74f2 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -449,7 +449,7 @@ config PROBE_EVENTS
def_bool n
config DYNAMIC_FTRACE
- bool "enable/disable function tracing dynamically"
+ bool "Enable/Disable function tracing dynamically"
depends on FUNCTION_TRACER
depends on HAVE_DYNAMIC_FTRACE
default y
@@ -472,9 +472,17 @@ config DYNAMIC_FTRACE
otherwise has native performance as long as no tracing is active.
config DYNAMIC_FTRACE_WITH_REGS
- def_bool y
+ bool "Pass registers to function tracer"
depends on DYNAMIC_FTRACE
depends on HAVE_DYNAMIC_FTRACE_WITH_REGS
+ default y
+ help
+ This option enables passing the current state of processor
+ registers to the function tracer. It allows to do a more
+ detailed analyze and print more information.
+
+ Say Y here if you are unsure. The only exception is if
+ you want to pass a build error caused by a broken compiler.
config FUNCTION_PROFILER
bool "Kernel function profiler"
--
1.8.5.6
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