linux-kernel - Re: [PATCH 23/36] arm64,smp: Remove trace_.*

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Message-ID: <Yqi2UGb4alCAR5s4@FVFF77S0Q05N>
Date:   Tue, 14 Jun 2022 17:24:48 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Peter Zijlstra <peterz@...radead.org>
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Subject: Re: [PATCH 23/36] arm64,smp: Remove trace_.*_rcuidle() usage

On Wed, Jun 08, 2022 at 04:27:46PM +0200, Peter Zijlstra wrote:
> Ever since commit d3afc7f12987 ("arm64: Allow IPIs to be handled as
> normal interrupts") this function is called in regular IRQ context.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

[adding Marc since he authored that commit]

Makes sense to me:

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

Mark.

> ---
>  arch/arm64/kernel/smp.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> --- a/arch/arm64/kernel/smp.c
> +++ b/arch/arm64/kernel/smp.c
> @@ -865,7 +865,7 @@ static void do_handle_IPI(int ipinr)
>  	unsigned int cpu = smp_processor_id();
>  
>  	if ((unsigned)ipinr < NR_IPI)
> -		trace_ipi_entry_rcuidle(ipi_types[ipinr]);
> +		trace_ipi_entry(ipi_types[ipinr]);
>  
>  	switch (ipinr) {
>  	case IPI_RESCHEDULE:
> @@ -914,7 +914,7 @@ static void do_handle_IPI(int ipinr)
>  	}
>  
>  	if ((unsigned)ipinr < NR_IPI)
> -		trace_ipi_exit_rcuidle(ipi_types[ipinr]);
> +		trace_ipi_exit(ipi_types[ipinr]);
>  }
>  
>  static irqreturn_t ipi_handler(int irq, void *data)
> 
>