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Message-ID: <20200226131606.GL14946@hirez.programming.kicks-ass.net>
Date: Wed, 26 Feb 2020 14:16:06 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Andy Lutomirski <luto@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
linux-arch <linux-arch@...r.kernel.org>,
Ingo Molnar <mingo@...nel.org>,
Joel Fernandes <joel@...lfernandes.org>,
Greg KH <gregkh@...uxfoundation.org>, gustavo@...eddedor.com,
Thomas Gleixner <tglx@...utronix.de>, paulmck@...nel.org,
Josh Triplett <josh@...htriplett.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Lai Jiangshan <jiangshanlai@...il.com>,
Tony Luck <tony.luck@...el.com>,
Frederic Weisbecker <frederic@...nel.org>,
Dan Carpenter <dan.carpenter@...cle.com>,
Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter()
On Wed, Feb 26, 2020 at 11:25:09AM +0100, Peter Zijlstra wrote:
> Subject: sh/ftrace: Move arch_ftrace_nmi_{enter,exit} into nmi exception
> From: Peter Zijlstra <peterz@...radead.org>
> Date: Mon Feb 24 22:26:21 CET 2020
>
> SuperH is the last remaining user of arch_ftrace_nmi_{enter,exit}(),
> remove it from the generic code and into the SuperH code.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> ---
> --- a/arch/sh/kernel/traps.c
> +++ b/arch/sh/kernel/traps.c
> @@ -170,11 +170,21 @@ BUILD_TRAP_HANDLER(bug)
> force_sig(SIGTRAP);
> }
>
> +#ifdef CONFIG_HAVE_DYNAMIC_FTRACE
build robot just informed me that this ought to s/HAVE_//
> +extern void arch_ftrace_nmi_enter(void);
> +extern void arch_ftrace_nmi_exit(void);
> +#else
> +static inline void arch_ftrace_nmi_enter(void) { }
> +static inline void arch_ftrace_nmi_exit(void) { }
> +#endif
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