linux-kernel - Re: [PATCH v1 0/4] coresight: Reduce duplicated sysfs accessors

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Message-ID: <20220822174532.GE1583519@p14s>
Date:   Mon, 22 Aug 2022 11:45:32 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     James Clark <james.clark@....com>
Cc:     suzuki.poulose@....com, coresight@...ts.linaro.org,
        mike.leach@...aro.org, leo.yan@...aro.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/4] coresight: Reduce duplicated sysfs accessors

On Mon, Jul 25, 2022 at 03:52:17PM +0100, James Clark wrote:
> The intent of this change is to reduce the large number identical of
> functions created by macros for sysfs accessors. It's possible to re-use
> the same function but pass in the register to access as an argument.
> This reduces the size of the coresight modules folder by 244KB.
> 
> The first two patches are refactors to simplify and remove some dead
> code, and the second two are the changes to use a shared function.
> 
> Testing
> =======
> 
> No changes in any of the outputs:
> 
>   cat /sys/bus/coresight/devices/*/mgmt/* > before.txt
>   cat /sys/bus/coresight/devices/*/mgmt/* > after.txt
>   diff before.txt after.txt
> 
> With the following modules loaded:
> 
>   ls /sys/bus/coresight/devices/
>   etm0  etm2  funnel0  funnel2  replicator0  tmc_etf0  tmc_etf2  tpiu0
>   etm1  etm3  funnel1  funnel3  stm0         tmc_etf1  tmc_etr0
> 
> James Clark (4):
>   coresight: Remove unused function parameter
>   coresight: Simplify sysfs accessors by using csdev_access abstraction
>   coresight: Re-use same function for similar sysfs register accessors
>   coresight: cti-sysfs: Re-use same functions for similar sysfs register
>     accessors
> 
>  drivers/hwtracing/coresight/coresight-catu.c  |  27 +--
>  drivers/hwtracing/coresight/coresight-core.c  |  14 ++
>  .../hwtracing/coresight/coresight-cti-sysfs.c | 213 +++++++-----------
>  drivers/hwtracing/coresight/coresight-etb10.c |  28 +--
>  .../coresight/coresight-etm3x-sysfs.c         |  34 +--
>  drivers/hwtracing/coresight/coresight-priv.h  |  48 ++--
>  .../coresight/coresight-replicator.c          |  10 +-
>  drivers/hwtracing/coresight/coresight-stm.c   |  40 +---
>  .../hwtracing/coresight/coresight-tmc-core.c  |  48 ++--
>  include/linux/coresight.h                     |  18 ++
>  10 files changed, 196 insertions(+), 284 deletions(-)

I am done reviewing this set.  It would be nice if you could respin this as
quickly as possible so that I could apply it to next early in the cycle.

Thanks,
Mathieu

> 
> -- 
> 2.28.0
>