1. Patchew
  2. linux
  3. [PATCH 0/7] Several updates for HiSilicon PCIe PMU driver
  4. View patch

[PATCH 1/7] drivers/perf: hisi_pcie: Introduce hisi_pcie_pmu_get_filter()

Yicong Yang posted 7 patches 2 years ago
[PATCH 1/7] drivers/perf: hisi_pcie: Introduce hisi_pcie_pmu_get_filter()
Posted by Yicong Yang 2 years ago 
From: Yicong Yang <yangyicong@hisilicon.com>

Factor out retrieving of the register value for the
corresponding event from hisi_pcie_config_filter() into a
new function hisi_pcie_pmu_get_filter() allowing future reuse.

Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
---
 drivers/perf/hisilicon/hisi_pcie_pmu.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/perf/hisilicon/hisi_pcie_pmu.c b/drivers/perf/hisilicon/hisi_pcie_pmu.c
index b90ba8aca3fa..11a819cd07f2 100644
--- a/drivers/perf/hisilicon/hisi_pcie_pmu.c
+++ b/drivers/perf/hisilicon/hisi_pcie_pmu.c
@@ -216,10 +216,8 @@ static void hisi_pcie_pmu_writeq(struct hisi_pcie_pmu *pcie_pmu, u32 reg_offset,
 	writeq_relaxed(val, pcie_pmu->base + offset);
 }
 
-static void hisi_pcie_pmu_config_filter(struct perf_event *event)
+static u64 hisi_pcie_pmu_get_filter(struct perf_event *event)
 {
-	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
-	struct hw_perf_event *hwc = &event->hw;
 	u64 port, trig_len, thr_len, len_mode;
 	u64 reg = HISI_PCIE_INIT_SET;
 
@@ -256,6 +254,15 @@ static void hisi_pcie_pmu_config_filter(struct perf_event *event)
 	else
 		reg |= FIELD_PREP(HISI_PCIE_LEN_M, HISI_PCIE_LEN_M_DEFAULT);
 
+	return reg;
+}
+
+static void hisi_pcie_pmu_config_filter(struct perf_event *event)
+{
+	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
+	struct hw_perf_event *hwc = &event->hw;
+	u64 reg = hisi_pcie_pmu_get_filter(event);
+
 	hisi_pcie_pmu_writeq(pcie_pmu, HISI_PCIE_EVENT_CTRL, hwc->idx, reg);
 }
 
-- 
2.24.0
Re: [PATCH 1/7] drivers/perf: hisi_pcie: Introduce hisi_pcie_pmu_get_filter()
Posted by Jonathan Cameron 2 years ago 
On Sun, 4 Feb 2024 15:45:21 +0800
Yicong Yang <yangyicong@huawei.com> wrote:

> From: Yicong Yang <yangyicong@hisilicon.com>
> 
> Factor out retrieving of the register value for the
> corresponding event from hisi_pcie_config_filter() into a
> new function hisi_pcie_pmu_get_filter() allowing future reuse.
> 
> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

> ---
>  drivers/perf/hisilicon/hisi_pcie_pmu.c | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/perf/hisilicon/hisi_pcie_pmu.c b/drivers/perf/hisilicon/hisi_pcie_pmu.c
> index b90ba8aca3fa..11a819cd07f2 100644
> --- a/drivers/perf/hisilicon/hisi_pcie_pmu.c
> +++ b/drivers/perf/hisilicon/hisi_pcie_pmu.c
> @@ -216,10 +216,8 @@ static void hisi_pcie_pmu_writeq(struct hisi_pcie_pmu *pcie_pmu, u32 reg_offset,
>  	writeq_relaxed(val, pcie_pmu->base + offset);
>  }
>  
> -static void hisi_pcie_pmu_config_filter(struct perf_event *event)
> +static u64 hisi_pcie_pmu_get_filter(struct perf_event *event)
>  {
> -	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
> -	struct hw_perf_event *hwc = &event->hw;
>  	u64 port, trig_len, thr_len, len_mode;
>  	u64 reg = HISI_PCIE_INIT_SET;
>  
> @@ -256,6 +254,15 @@ static void hisi_pcie_pmu_config_filter(struct perf_event *event)
>  	else
>  		reg |= FIELD_PREP(HISI_PCIE_LEN_M, HISI_PCIE_LEN_M_DEFAULT);
>  
> +	return reg;
> +}
> +
> +static void hisi_pcie_pmu_config_filter(struct perf_event *event)
> +{
> +	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
> +	struct hw_perf_event *hwc = &event->hw;
> +	u64 reg = hisi_pcie_pmu_get_filter(event);
> +
>  	hisi_pcie_pmu_writeq(pcie_pmu, HISI_PCIE_EVENT_CTRL, hwc->idx, reg);
>  }
>
Re: [PATCH 1/7] drivers/perf: hisi_pcie: Introduce hisi_pcie_pmu_get_filter()
Posted by Jonathan Cameron 2 years ago 
On Thu, 8 Feb 2024 12:06:43 +0000
Jonathan Cameron <Jonathan.Cameron@Huawei.com> wrote:

> On Sun, 4 Feb 2024 15:45:21 +0800
> Yicong Yang <yangyicong@huawei.com> wrote:
> 
> > From: Yicong Yang <yangyicong@hisilicon.com>
> > 
> > Factor out retrieving of the register value for the
> > corresponding event from hisi_pcie_config_filter() into a
> > new function hisi_pcie_pmu_get_filter() allowing future reuse.
> > 
> > Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>  
> 
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

On second thoughts, this might benefit from a clearer name.
Perhaps just call it exactly what it is
hisi_pcie_pmu_get_ctrl_reg_val_to_set()

It incorporates the event code as well as the filter.
Maybe we want to rename pmu_config_filter() as well to
pmu_config_counter() which I think is the real meaning?


> 
> > ---
> >  drivers/perf/hisilicon/hisi_pcie_pmu.c | 13 ++++++++++---
> >  1 file changed, 10 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/perf/hisilicon/hisi_pcie_pmu.c b/drivers/perf/hisilicon/hisi_pcie_pmu.c
> > index b90ba8aca3fa..11a819cd07f2 100644
> > --- a/drivers/perf/hisilicon/hisi_pcie_pmu.c
> > +++ b/drivers/perf/hisilicon/hisi_pcie_pmu.c
> > @@ -216,10 +216,8 @@ static void hisi_pcie_pmu_writeq(struct hisi_pcie_pmu *pcie_pmu, u32 reg_offset,
> >  	writeq_relaxed(val, pcie_pmu->base + offset);
> >  }
> >  
> > -static void hisi_pcie_pmu_config_filter(struct perf_event *event)
> > +static u64 hisi_pcie_pmu_get_filter(struct perf_event *event)
> >  {
> > -	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
> > -	struct hw_perf_event *hwc = &event->hw;
> >  	u64 port, trig_len, thr_len, len_mode;
> >  	u64 reg = HISI_PCIE_INIT_SET;
> >  
> > @@ -256,6 +254,15 @@ static void hisi_pcie_pmu_config_filter(struct perf_event *event)
> >  	else
> >  		reg |= FIELD_PREP(HISI_PCIE_LEN_M, HISI_PCIE_LEN_M_DEFAULT);
> >  
> > +	return reg;
> > +}
> > +
> > +static void hisi_pcie_pmu_config_filter(struct perf_event *event)
> > +{
> > +	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
> > +	struct hw_perf_event *hwc = &event->hw;
> > +	u64 reg = hisi_pcie_pmu_get_filter(event);
> > +
> >  	hisi_pcie_pmu_writeq(pcie_pmu, HISI_PCIE_EVENT_CTRL, hwc->idx, reg);
> >  }
> >    
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Re: [PATCH 1/7] drivers/perf: hisi_pcie: Introduce hisi_pcie_pmu_get_filter()
Posted by Yicong Yang 1 year, 11 months ago 
On 2024/2/8 20:18, Jonathan Cameron wrote:
> On Thu, 8 Feb 2024 12:06:43 +0000
> Jonathan Cameron <Jonathan.Cameron@Huawei.com> wrote:
> 
>> On Sun, 4 Feb 2024 15:45:21 +0800
>> Yicong Yang <yangyicong@huawei.com> wrote:
>>
>>> From: Yicong Yang <yangyicong@hisilicon.com>
>>>
>>> Factor out retrieving of the register value for the
>>> corresponding event from hisi_pcie_config_filter() into a
>>> new function hisi_pcie_pmu_get_filter() allowing future reuse.
>>>
>>> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>  
>>
>> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> 
> On second thoughts, this might benefit from a clearer name.
> Perhaps just call it exactly what it is
> hisi_pcie_pmu_get_ctrl_reg_val_to_set()
> 
> It incorporates the event code as well as the filter.
> Maybe we want to rename pmu_config_filter() as well to
> pmu_config_counter() which I think is the real meaning?
> 

make sense to me. we can simply use the reg name as the suffix,
it'll be more clearer:

hisi_pcie_pmu_get_event_ctrl_val()
hisi_pcie_pmu_config_event_ctrl()

> 
>>
>>> ---
>>>  drivers/perf/hisilicon/hisi_pcie_pmu.c | 13 ++++++++++---
>>>  1 file changed, 10 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/perf/hisilicon/hisi_pcie_pmu.c b/drivers/perf/hisilicon/hisi_pcie_pmu.c
>>> index b90ba8aca3fa..11a819cd07f2 100644
>>> --- a/drivers/perf/hisilicon/hisi_pcie_pmu.c
>>> +++ b/drivers/perf/hisilicon/hisi_pcie_pmu.c
>>> @@ -216,10 +216,8 @@ static void hisi_pcie_pmu_writeq(struct hisi_pcie_pmu *pcie_pmu, u32 reg_offset,
>>>  	writeq_relaxed(val, pcie_pmu->base + offset);
>>>  }
>>>  
>>> -static void hisi_pcie_pmu_config_filter(struct perf_event *event)
>>> +static u64 hisi_pcie_pmu_get_filter(struct perf_event *event)
>>>  {
>>> -	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
>>> -	struct hw_perf_event *hwc = &event->hw;
>>>  	u64 port, trig_len, thr_len, len_mode;
>>>  	u64 reg = HISI_PCIE_INIT_SET;
>>>  
>>> @@ -256,6 +254,15 @@ static void hisi_pcie_pmu_config_filter(struct perf_event *event)
>>>  	else
>>>  		reg |= FIELD_PREP(HISI_PCIE_LEN_M, HISI_PCIE_LEN_M_DEFAULT);
>>>  
>>> +	return reg;
>>> +}
>>> +
>>> +static void hisi_pcie_pmu_config_filter(struct perf_event *event)
>>> +{
>>> +	struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu);
>>> +	struct hw_perf_event *hwc = &event->hw;
>>> +	u64 reg = hisi_pcie_pmu_get_filter(event);
>>> +
>>>  	hisi_pcie_pmu_writeq(pcie_pmu, HISI_PCIE_EVENT_CTRL, hwc->idx, reg);
>>>  }
>>>    
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 
> .
>

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.