From: Steven Rostedt <rostedt@goodmis.org>
To: Will Deacon <will.deacon@arm.com>
Cc: Tom Zanussi <zanussi@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-kernel@vger.kernel.org,
Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
"Joel Fernandes \(Google\)" <joel@joelfernandes.org>,
Namhyung Kim <namhyung@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [for-next][PATCH 05/30] arm64: function_graph: Remove use of FTRACE_NOTRACE_DEPTH
Date: Thu, 6 Dec 2018 10:55:41 -0500 [thread overview]
Message-ID: <20181206105541.0120d556@vmware.local.home> (raw)
In-Reply-To: <20181206154931.GA4327@arm.com>
On Thu, 6 Dec 2018 15:49:32 +0000
Will Deacon <will.deacon@arm.com> wrote:
> On Wed, Dec 05, 2018 at 06:47:54PM -0500, Steven Rostedt wrote:
> > From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
> >
> > Functions in the set_graph_notrace no longer subtract FTRACE_NOTRACE_DEPTH
> > from curr_ret_stack, as that is now implemented via the trace_recursion
> > flags. Access to curr_ret_stack no longer needs to worry about checking for
> > this. curr_ret_stack is still initialized to -1, when there's not a shadow
> > stack allocated.
> >
> > Cc: Catalin Marinas <catalin.marinas@arm.com>
> > Cc: Will Deacon <will.deacon@arm.com>
> > Cc: linux-arm-kernel@lists.infradead.org
> > Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
> > Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
> > ---
> > arch/arm64/kernel/stacktrace.c | 3 ---
> > 1 file changed, 3 deletions(-)
> >
> > diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c
> > index 4989f7ea1e59..7723dadf25be 100644
> > --- a/arch/arm64/kernel/stacktrace.c
> > +++ b/arch/arm64/kernel/stacktrace.c
> > @@ -61,9 +61,6 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)
> > (frame->pc == (unsigned long)return_to_handler)) {
> > if (WARN_ON_ONCE(frame->graph == -1))
> > return -EINVAL;
> > - if (frame->graph < -1)
> > - frame->graph += FTRACE_NOTRACE_DEPTH;
> > -
>
> Acked-by: Will Deacon <will.deacon@arm.com>
>
Thanks Will!
-- Steve
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prev parent reply other threads:[~2018-12-06 15:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20181205234749.372720574@goodmis.org>
2018-12-05 23:47 ` [for-next][PATCH 05/30] arm64: function_graph: Remove use of FTRACE_NOTRACE_DEPTH Steven Rostedt
2018-12-06 3:55 ` Steven Rostedt
2018-12-06 15:49 ` Will Deacon
2018-12-06 15:55 ` Steven Rostedt [this message]
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