linux-kernel - RE: [EXT] Re: [PATCH v4 4/6] perf: imx_perf: add macro definitions for parsing config attr

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Date: Thu, 29 Feb 2024 10:29:09 +0000
From: Xu Yang <xu.yang_2@....com>
To: Will Deacon <will@...nel.org>
CC: Frank Li <frank.li@....com>, "mark.rutland@....com"
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Subject: RE: [EXT] Re: [PATCH v4 4/6] perf: imx_perf: add macro definitions
 for parsing config attr

Hi Will,

> 
> On Wed, Jan 31, 2024 at 01:58:09PM +0800, Xu Yang wrote:
> > The user can set event and counter in cmdline and the driver need to parse
> > it using 'config' attr value. This will add macro definitions to avoid
> > hard-code in driver.
> >
> > Signed-off-by: Xu Yang <xu.yang_2@....com>
> >
> > ---
> > Changes in v4:
> >  - new patch
> > ---
> >  drivers/perf/fsl_imx9_ddr_perf.c | 19 +++++++++++++------
> >  1 file changed, 13 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/perf/fsl_imx9_ddr_perf.c b/drivers/perf/fsl_imx9_ddr_perf.c
> > index 85aaaef7212f..94041f06c152 100644
> > --- a/drivers/perf/fsl_imx9_ddr_perf.c
> > +++ b/drivers/perf/fsl_imx9_ddr_perf.c
> > @@ -52,6 +52,11 @@
> >  #define NUM_COUNTERS         11
> >  #define CYCLES_COUNTER               0
> >
> > +#define CONFIG_EVENT_MASK    0x00FF
> > +#define CONFIG_EVENT_OFFSET  0
> > +#define CONFIG_COUNTER_MASK  0xFF00
> > +#define CONFIG_COUNTER_OFFSET        8
> 
> Can you move this patch earlier, please, so that the imx95 support can use
> these new definitions immediately?

Yes, I will try it in next version.

Thanks,
Xu Yang

> 
> Will