Re: [RFC][PATCH v3 00/33] timers: Use timer_shutdown*() before freeing timers

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On Fri, 4 Nov 2022 12:22:32 -0700
Guenter Roeck <linux@xxxxxxxxxxxx> wrote:

> Unfortunately the renaming caused some symbol conflicts.
> 
> Global definition: timer_shutdown
> 
>   File             Line
> 0 time.c            93 static inline void timer_shutdown(struct clock_event_device *evt)
> 1 arm_arch_timer.c 690 static __always_inline int timer_shutdown(const int access,
> 2 timer-fttmr010.c 105 int (*timer_shutdown)(struct clock_event_device *evt);
> 3 timer-sp804.c    158 static inline void timer_shutdown(struct clock_event_device *evt)
> 4 timer.h          239 static inline int timer_shutdown(struct timer_list *timer)

$ git grep '\btimer_shutdown'
arch/arm/mach-spear/time.c:static inline void timer_shutdown(struct clock_event_device *evt)
arch/arm/mach-spear/time.c:     timer_shutdown(evt);
arch/arm/mach-spear/time.c:     timer_shutdown(evt);
arch/arm/mach-spear/time.c:     timer_shutdown(evt);
drivers/clocksource/arm_arch_timer.c:static __always_inline int timer_shutdown(const int access,
drivers/clocksource/arm_arch_timer.c:   return timer_shutdown(ARCH_TIMER_VIRT_ACCESS, clk);
drivers/clocksource/arm_arch_timer.c:   return timer_shutdown(ARCH_TIMER_PHYS_ACCESS, clk);
drivers/clocksource/arm_arch_timer.c:   return timer_shutdown(ARCH_TIMER_MEM_VIRT_ACCESS, clk);
drivers/clocksource/arm_arch_timer.c:   return timer_shutdown(ARCH_TIMER_MEM_PHYS_ACCESS, clk);
drivers/clocksource/timer-fttmr010.c:   int (*timer_shutdown)(struct clock_event_device *evt);
drivers/clocksource/timer-fttmr010.c:   fttmr010->timer_shutdown(evt);
drivers/clocksource/timer-fttmr010.c:   fttmr010->timer_shutdown(evt);
drivers/clocksource/timer-fttmr010.c:   fttmr010->timer_shutdown(evt);
drivers/clocksource/timer-fttmr010.c:           fttmr010->timer_shutdown = ast2600_timer_shutdown;
drivers/clocksource/timer-fttmr010.c:           fttmr010->timer_shutdown = fttmr010_timer_shutdown;
drivers/clocksource/timer-fttmr010.c:   fttmr010->clkevt.set_state_shutdown = fttmr010->timer_shutdown;
drivers/clocksource/timer-fttmr010.c:   fttmr010->clkevt.tick_resume = fttmr010->timer_shutdown;
drivers/clocksource/timer-sp804.c:static inline void timer_shutdown(struct clock_event_device *evt)
drivers/clocksource/timer-sp804.c:      timer_shutdown(evt);
drivers/clocksource/timer-sp804.c:      timer_shutdown(evt);

Honestly, I think these need to be renamed, as "timer_shutdown()"
should be specific to the timer code, and not individual timers.

I'll start making a patch set that starts by renaming these timers,
then adds the timer_shutdown() API, and finished with the trivial
updates, and that will be a real "PATCH" (non RFC).

Linus, should I also add any patches that has already been acked by the
respective maintainer?

-- Steve



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