* [PATCH] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
@ 2021-02-24 20:59 Sami Tolvanen
2021-02-24 21:02 ` Kees Cook
0 siblings, 1 reply; 5+ messages in thread
From: Sami Tolvanen @ 2021-02-24 20:59 UTC (permalink / raw)
To: James E.J. Bottomley, Helge Deller, Guenter Roeck
Cc: Steven Rostedt (VMware),
Kees Cook, linux-parisc, linux-kernel, Sami Tolvanen
parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
to tell that to the build system.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
---
arch/parisc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index ecef9aff9d72..9ee806f68123 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -60,6 +60,7 @@ config PARISC
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
+ select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
select HAVE_KPROBES_ON_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS
base-commit: 719bbd4a509f403f537adcaefd8ce17532be2e84
--
2.30.0.617.g56c4b15f3c-goog
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
2021-02-24 20:59 [PATCH] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY Sami Tolvanen
@ 2021-02-24 21:02 ` Kees Cook
2021-02-24 22:46 ` Guenter Roeck
0 siblings, 1 reply; 5+ messages in thread
From: Kees Cook @ 2021-02-24 21:02 UTC (permalink / raw)
To: Sami Tolvanen
Cc: James E.J. Bottomley, Helge Deller, Guenter Roeck,
Steven Rostedt (VMware),
linux-parisc, linux-kernel
On Wed, Feb 24, 2021 at 12:59:38PM -0800, Sami Tolvanen wrote:
> parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
> don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
> to tell that to the build system.
>
> Reported-by: Guenter Roeck <linux@roeck-us.net>
> Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
I've got parisc building now, and can confirm:
Tested-by: Kees Cook <keescook@chromium.org>
Guenter, does this fix it for you too?
-Kees
> ---
> arch/parisc/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
> index ecef9aff9d72..9ee806f68123 100644
> --- a/arch/parisc/Kconfig
> +++ b/arch/parisc/Kconfig
> @@ -60,6 +60,7 @@ config PARISC
> select HAVE_KPROBES
> select HAVE_KRETPROBES
> select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
> + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if HAVE_DYNAMIC_FTRACE
> select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
> select HAVE_KPROBES_ON_FTRACE
> select HAVE_DYNAMIC_FTRACE_WITH_REGS
>
> base-commit: 719bbd4a509f403f537adcaefd8ce17532be2e84
> --
> 2.30.0.617.g56c4b15f3c-goog
>
--
Kees Cook
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
2021-02-24 21:02 ` Kees Cook
@ 2021-02-24 22:46 ` Guenter Roeck
2021-02-24 22:53 ` Sami Tolvanen
2021-02-24 22:54 ` Kees Cook
0 siblings, 2 replies; 5+ messages in thread
From: Guenter Roeck @ 2021-02-24 22:46 UTC (permalink / raw)
To: Kees Cook
Cc: Sami Tolvanen, James E.J. Bottomley, Helge Deller,
Steven Rostedt (VMware),
linux-parisc, linux-kernel
On Wed, Feb 24, 2021 at 01:02:27PM -0800, Kees Cook wrote:
> On Wed, Feb 24, 2021 at 12:59:38PM -0800, Sami Tolvanen wrote:
> > parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
> > don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
> > to tell that to the build system.
> >
> > Reported-by: Guenter Roeck <linux@roeck-us.net>
> > Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
> > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
>
> I've got parisc building now, and can confirm:
>
> Tested-by: Kees Cook <keescook@chromium.org>
>
> Guenter, does this fix it for you too?
>
I get this:
WARNING: unmet direct dependencies detected for FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
Depends on [n]: TRACING_SUPPORT [=y] && FTRACE [=y] && FTRACE_MCOUNT_RECORD [=n]
Selected by [y]:
- PARISC [=y] && HAVE_DYNAMIC_FTRACE [=y]
when trying to build parisc:defconfig.
I think it should be
select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
(no HAVE_)
Guenter
> -Kees
>
> > ---
> > arch/parisc/Kconfig | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
> > index ecef9aff9d72..9ee806f68123 100644
> > --- a/arch/parisc/Kconfig
> > +++ b/arch/parisc/Kconfig
> > @@ -60,6 +60,7 @@ config PARISC
> > select HAVE_KPROBES
> > select HAVE_KRETPROBES
> > select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
> > + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if HAVE_DYNAMIC_FTRACE
> > select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
> > select HAVE_KPROBES_ON_FTRACE
> > select HAVE_DYNAMIC_FTRACE_WITH_REGS
> >
> > base-commit: 719bbd4a509f403f537adcaefd8ce17532be2e84
> > --
> > 2.30.0.617.g56c4b15f3c-goog
> >
>
> --
> Kees Cook
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
2021-02-24 22:46 ` Guenter Roeck
@ 2021-02-24 22:53 ` Sami Tolvanen
2021-02-24 22:54 ` Kees Cook
1 sibling, 0 replies; 5+ messages in thread
From: Sami Tolvanen @ 2021-02-24 22:53 UTC (permalink / raw)
To: Guenter Roeck
Cc: Kees Cook, James E.J. Bottomley, Helge Deller,
Steven Rostedt (VMware),
linux-parisc, LKML
On Wed, Feb 24, 2021 at 2:46 PM Guenter Roeck <linux@roeck-us.net> wrote:
>
> On Wed, Feb 24, 2021 at 01:02:27PM -0800, Kees Cook wrote:
> > On Wed, Feb 24, 2021 at 12:59:38PM -0800, Sami Tolvanen wrote:
> > > parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
> > > don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
> > > to tell that to the build system.
> > >
> > > Reported-by: Guenter Roeck <linux@roeck-us.net>
> > > Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
> > > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
> >
> > I've got parisc building now, and can confirm:
> >
> > Tested-by: Kees Cook <keescook@chromium.org>
> >
> > Guenter, does this fix it for you too?
> >
>
> I get this:
>
> WARNING: unmet direct dependencies detected for FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
> Depends on [n]: TRACING_SUPPORT [=y] && FTRACE [=y] && FTRACE_MCOUNT_RECORD [=n]
> Selected by [y]:
> - PARISC [=y] && HAVE_DYNAMIC_FTRACE [=y]
>
> when trying to build parisc:defconfig.
>
> I think it should be
>
> select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
>
> (no HAVE_)
Ah, it depends on FTRACE_MCOUNT_RECORD. Thanks for testing. I'll send v2.
Sami
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
2021-02-24 22:46 ` Guenter Roeck
2021-02-24 22:53 ` Sami Tolvanen
@ 2021-02-24 22:54 ` Kees Cook
1 sibling, 0 replies; 5+ messages in thread
From: Kees Cook @ 2021-02-24 22:54 UTC (permalink / raw)
To: Guenter Roeck
Cc: Sami Tolvanen, James E.J. Bottomley, Helge Deller,
Steven Rostedt (VMware),
linux-parisc, linux-kernel
On Wed, Feb 24, 2021 at 02:46:34PM -0800, Guenter Roeck wrote:
> On Wed, Feb 24, 2021 at 01:02:27PM -0800, Kees Cook wrote:
> > On Wed, Feb 24, 2021 at 12:59:38PM -0800, Sami Tolvanen wrote:
> > > parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
> > > don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
> > > to tell that to the build system.
> > >
> > > Reported-by: Guenter Roeck <linux@roeck-us.net>
> > > Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
> > > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
> >
> > I've got parisc building now, and can confirm:
> >
> > Tested-by: Kees Cook <keescook@chromium.org>
> >
> > Guenter, does this fix it for you too?
> >
>
> I get this:
>
> WARNING: unmet direct dependencies detected for FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
> Depends on [n]: TRACING_SUPPORT [=y] && FTRACE [=y] && FTRACE_MCOUNT_RECORD [=n]
> Selected by [y]:
> - PARISC [=y] && HAVE_DYNAMIC_FTRACE [=y]
>
> when trying to build parisc:defconfig.
>
> I think it should be
>
> select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
>
> (no HAVE_)
Yeah, that works for me with both defconfig and allmodconfig. (And that
more closely matches what's done for arm64.)
-Kees
>
> Guenter
>
> > -Kees
> >
> > > ---
> > > arch/parisc/Kconfig | 1 +
> > > 1 file changed, 1 insertion(+)
> > >
> > > diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
> > > index ecef9aff9d72..9ee806f68123 100644
> > > --- a/arch/parisc/Kconfig
> > > +++ b/arch/parisc/Kconfig
> > > @@ -60,6 +60,7 @@ config PARISC
> > > select HAVE_KPROBES
> > > select HAVE_KRETPROBES
> > > select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
> > > + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if HAVE_DYNAMIC_FTRACE
> > > select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
> > > select HAVE_KPROBES_ON_FTRACE
> > > select HAVE_DYNAMIC_FTRACE_WITH_REGS
> > >
> > > base-commit: 719bbd4a509f403f537adcaefd8ce17532be2e84
> > > --
> > > 2.30.0.617.g56c4b15f3c-goog
> > >
> >
> > --
> > Kees Cook
--
Kees Cook
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-02-24 22:55 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-24 20:59 [PATCH] parisc: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY Sami Tolvanen
2021-02-24 21:02 ` Kees Cook
2021-02-24 22:46 ` Guenter Roeck
2021-02-24 22:53 ` Sami Tolvanen
2021-02-24 22:54 ` Kees Cook
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