Re: [PATCH v19 04/11] perf: arm_v7_pmu: Drop obvious comments for enabling/disabling counters and interrupts

[Anshuman Khandual <anshuman.khandual@arm.com>]

On 2/3/25 06:12, Rob Herring (Arm) wrote:
> The function calls for enabling/disabling counters and interrupts are
> pretty obvious as to what they are doing, and the comments don't add
> any additional value.
> 
> Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
> ---
>  drivers/perf/arm_v7_pmu.c | 44 --------------------------------------------
>  1 file changed, 44 deletions(-)
> 
> diff --git a/drivers/perf/arm_v7_pmu.c b/drivers/perf/arm_v7_pmu.c
> index 420cadd108e7..7fa88e3b64e0 100644
> --- a/drivers/perf/arm_v7_pmu.c
> +++ b/drivers/perf/arm_v7_pmu.c
> @@ -857,14 +857,6 @@ static void armv7pmu_enable_event(struct perf_event *event)
>  		return;
>  	}
>  
> -	/*
> -	 * Enable counter and interrupt, and set the counter to count
> -	 * the event that we're interested in.
> -	 */
> -
> -	/*
> -	 * Disable counter
> -	 */
>  	armv7_pmnc_disable_counter(idx);
>  
>  	/*
> @@ -875,14 +867,7 @@ static void armv7pmu_enable_event(struct perf_event *event)
>  	if (cpu_pmu->set_event_filter || idx != ARMV7_IDX_CYCLE_COUNTER)
>  		armv7_pmnc_write_evtsel(idx, hwc->config_base);
>  
> -	/*
> -	 * Enable interrupt for this counter
> -	 */
>  	armv7_pmnc_enable_intens(idx);
> -
> -	/*
> -	 * Enable counter
> -	 */
>  	armv7_pmnc_enable_counter(idx);
>  }
>  
> @@ -898,18 +883,7 @@ static void armv7pmu_disable_event(struct perf_event *event)
>  		return;
>  	}
>  
> -	/*
> -	 * Disable counter and interrupt
> -	 */
> -
> -	/*
> -	 * Disable counter
> -	 */
>  	armv7_pmnc_disable_counter(idx);
> -
> -	/*
> -	 * Disable interrupt for this counter
> -	 */
>  	armv7_pmnc_disable_intens(idx);
>  }
>  
> @@ -1476,12 +1450,6 @@ static void krait_pmu_enable_event(struct perf_event *event)
>  	struct hw_perf_event *hwc = &event->hw;
>  	int idx = hwc->idx;
>  
> -	/*
> -	 * Enable counter and interrupt, and set the counter to count
> -	 * the event that we're interested in.
> -	 */
> -
> -	/* Disable counter */
>  	armv7_pmnc_disable_counter(idx);
>  
>  	/*
> @@ -1494,10 +1462,7 @@ static void krait_pmu_enable_event(struct perf_event *event)
>  	else
>  		armv7_pmnc_write_evtsel(idx, hwc->config_base);
>  
> -	/* Enable interrupt for this counter */
>  	armv7_pmnc_enable_intens(idx);
> -
> -	/* Enable counter */
>  	armv7_pmnc_enable_counter(idx);
>  }
>  
> @@ -1797,12 +1762,6 @@ static void scorpion_pmu_enable_event(struct perf_event *event)
>  	struct hw_perf_event *hwc = &event->hw;
>  	int idx = hwc->idx;
>  
> -	/*
> -	 * Enable counter and interrupt, and set the counter to count
> -	 * the event that we're interested in.
> -	 */
> -
> -	/* Disable counter */
>  	armv7_pmnc_disable_counter(idx);
>  
>  	/*
> @@ -1815,10 +1774,7 @@ static void scorpion_pmu_enable_event(struct perf_event *event)
>  	else if (idx != ARMV7_IDX_CYCLE_COUNTER)
>  		armv7_pmnc_write_evtsel(idx, hwc->config_base);
>  
> -	/* Enable interrupt for this counter */
>  	armv7_pmnc_enable_intens(idx);
> -
> -	/* Enable counter */
>  	armv7_pmnc_enable_counter(idx);
>  }
>  
> 

Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>