linux-kernel - Re: [PATCH v5a 2/5] clocksource/drivers/arm_arch_timer: Do not use timer namespace for timer

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Date:   Mon, 7 Nov 2022 11:03:29 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Anna-Maria Gleixner <anna-maria@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Marc Zyngier <maz@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5a 2/5] clocksource/drivers/arm_arch_timer: Do not use
 timer namespace for timer_shutdown() function

On Sun, Nov 06, 2022 at 01:45:37AM -0400, Steven Rostedt wrote:
> From: "Steven Rostedt (Google)" <rostedt@...dmis.org>
> 
> A new "shutdown" timer state is being added to the generic timer code. One
> of the functions to change the timer into the state is called
> "timer_shutdown()". This means that there can not be other functions
> called "timer_shutdown()" as the timer code owns the "timer_*" name space.
> 
> Rename timer_shutdown() to arch_timer_shutdown() to avoid this conflict.
> 
> Link: https://lore.kernel.org/all/20221105060155.409832154@goodmis.org/
> 
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Marc Zyngier <maz@...nel.org>
> Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: linux-arm-kernel@...ts.infradead.org
> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
> Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>

Acked-by: Mark Rutland <mark.rutland@....com>

Mark.

> ---
>  drivers/clocksource/arm_arch_timer.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
> index a7ff77550e17..9c3420a0d19d 100644
> --- a/drivers/clocksource/arm_arch_timer.c
> +++ b/drivers/clocksource/arm_arch_timer.c
> @@ -687,8 +687,8 @@ static irqreturn_t arch_timer_handler_virt_mem(int irq, void *dev_id)
>  	return timer_handler(ARCH_TIMER_MEM_VIRT_ACCESS, evt);
>  }
>  
> -static __always_inline int timer_shutdown(const int access,
> -					  struct clock_event_device *clk)
> +static __always_inline int arch_timer_shutdown(const int access,
> +					       struct clock_event_device *clk)
>  {
>  	unsigned long ctrl;
>  
> @@ -701,22 +701,22 @@ static __always_inline int timer_shutdown(const int access,
>  
>  static int arch_timer_shutdown_virt(struct clock_event_device *clk)
>  {
> -	return timer_shutdown(ARCH_TIMER_VIRT_ACCESS, clk);
> +	return arch_timer_shutdown(ARCH_TIMER_VIRT_ACCESS, clk);
>  }
>  
>  static int arch_timer_shutdown_phys(struct clock_event_device *clk)
>  {
> -	return timer_shutdown(ARCH_TIMER_PHYS_ACCESS, clk);
> +	return arch_timer_shutdown(ARCH_TIMER_PHYS_ACCESS, clk);
>  }
>  
>  static int arch_timer_shutdown_virt_mem(struct clock_event_device *clk)
>  {
> -	return timer_shutdown(ARCH_TIMER_MEM_VIRT_ACCESS, clk);
> +	return arch_timer_shutdown(ARCH_TIMER_MEM_VIRT_ACCESS, clk);
>  }
>  
>  static int arch_timer_shutdown_phys_mem(struct clock_event_device *clk)
>  {
> -	return timer_shutdown(ARCH_TIMER_MEM_PHYS_ACCESS, clk);
> +	return arch_timer_shutdown(ARCH_TIMER_MEM_PHYS_ACCESS, clk);
>  }
>  
>  static __always_inline void set_next_event(const int access, unsigned long evt,
> -- 
> 2.35.1