linux-kernel - Re: [PATCH v1 1/3] string: Consolidate yesno() helpers under string.h hood

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Message-ID: <87y2fpbdmp.fsf@intel.com>
Date:   Mon, 15 Feb 2021 16:37:50 +0200
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Alex Deucher <alexander.deucher@....com>,
        Mikita Lipski <mikita.lipski@....com>,
        Eryk Brol <eryk.brol@....com>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>,
        Francis Laniel <laniel_francis@...vacyrequired.com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        netdev@...r.kernel.org
Cc:     Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Raju Rangoju <rajur@...lsio.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v1 1/3] string: Consolidate yesno() helpers under string.h hood

On Mon, 15 Feb 2021, Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:
> We have already few similar implementation and a lot of code that can benefit
> of the yesno() helper.  Consolidate yesno() helpers under string.h hood.

Good luck. I gave up after just four versions. [1]

Acked-by: Jani Nikula <jani.nikula@...el.com>


BR,
Jani.


[1] http://lore.kernel.org/r/20191023131308.9420-1-jani.nikula@intel.com


>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  .../drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c    |  6 +-----
>  drivers/gpu/drm/i915/i915_utils.h                    |  6 +-----
>  drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c   | 12 +-----------
>  include/linux/string.h                               |  5 +++++
>  4 files changed, 8 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
> index 360952129b6d..7fde4f90e513 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
> @@ -23,6 +23,7 @@
>   *
>   */
>  
> +#include <linux/string.h>
>  #include <linux/uaccess.h>
>  
>  #include <drm/drm_debugfs.h>
> @@ -49,11 +50,6 @@ struct dmub_debugfs_trace_entry {
>  	uint32_t param1;
>  };
>  
> -static inline const char *yesno(bool v)
> -{
> -	return v ? "yes" : "no";
> -}
> -
>  /* parse_write_buffer_into_params - Helper function to parse debugfs write buffer into an array
>   *
>   * Function takes in attributes passed to debugfs write entry
> diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
> index abd4dcd9f79c..e6da5a951132 100644
> --- a/drivers/gpu/drm/i915/i915_utils.h
> +++ b/drivers/gpu/drm/i915/i915_utils.h
> @@ -27,6 +27,7 @@
>  
>  #include <linux/list.h>
>  #include <linux/overflow.h>
> +#include <linux/string.h>
>  #include <linux/sched.h>
>  #include <linux/types.h>
>  #include <linux/workqueue.h>
> @@ -408,11 +409,6 @@ wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
>  #define MBps(x) KBps(1000 * (x))
>  #define GBps(x) ((u64)1000 * MBps((x)))
>  
> -static inline const char *yesno(bool v)
> -{
> -	return v ? "yes" : "no";
> -}
> -
>  static inline const char *onoff(bool v)
>  {
>  	return v ? "on" : "off";
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
> index 7d49fd4edc9e..c857d73abbd7 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
> @@ -34,6 +34,7 @@
>  
>  #include <linux/seq_file.h>
>  #include <linux/debugfs.h>
> +#include <linux/string.h>
>  #include <linux/string_helpers.h>
>  #include <linux/sort.h>
>  #include <linux/ctype.h>
> @@ -2015,17 +2016,6 @@ static const struct file_operations rss_debugfs_fops = {
>  /* RSS Configuration.
>   */
>  
> -/* Small utility function to return the strings "yes" or "no" if the supplied
> - * argument is non-zero.
> - */
> -static const char *yesno(int x)
> -{
> -	static const char *yes = "yes";
> -	static const char *no = "no";
> -
> -	return x ? yes : no;
> -}
> -
>  static int rss_config_show(struct seq_file *seq, void *v)
>  {
>  	struct adapter *adapter = seq->private;
> diff --git a/include/linux/string.h b/include/linux/string.h
> index 9521d8cab18e..fd946a5e18c8 100644
> --- a/include/linux/string.h
> +++ b/include/linux/string.h
> @@ -308,4 +308,9 @@ static __always_inline size_t str_has_prefix(const char *str, const char *prefix
>  	return strncmp(str, prefix, len) == 0 ? len : 0;
>  }
>  
> +static inline const char *yesno(bool yes)
> +{
> +	return yes ? "yes" : "no";
> +}
> +
>  #endif /* _LINUX_STRING_H_ */

-- 
Jani Nikula, Intel Open Source Graphics Center