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[PATCH 03/10] i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2(dev_priv->info.subslice_7eu[i])"

Started byZhaoxiu Zeng <zhaoxiu.zeng@gmail.com>
First post2015-12-06 11:30 +0100
Last post2015-12-07 09:40 +0100
Articles 3 — 3 participants

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  [PATCH 03/10] i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2(dev_priv->info.subslice_7eu[i])" Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com> - 2015-12-06 11:30 +0100
    Re: [PATCH 03/10] i915: Replace  "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with  "!is_power_of_2(dev_priv->info.subslice_7eu[i])" Daniel Vetter <daniel@ffwll.ch> - 2015-12-07 08:50 +0100
    Re: [PATCH 03/10] i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2(dev_priv->info.subslice_7eu[i])" Jani Nikula <jani.nikula@linux.intel.com> - 2015-12-07 09:40 +0100

#1284838 — [PATCH 03/10] i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2(dev_priv->info.subslice_7eu[i])"

FromZhaoxiu Zeng <zhaoxiu.zeng@gmail.com>
Date2015-12-06 11:30 +0100
Subject[PATCH 03/10] i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2(dev_priv->info.subslice_7eu[i])"
Message-ID<qCEJQ-5Hj-11@gated-at.bofh.it>
From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>

Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 9461a23..16c8cf1 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -27,6 +27,7 @@
  *
  */
 
+#include <linux/log2.h>
 #include <drm/drmP.h>
 #include "i915_drv.h"
 #include <drm/i915_drm.h>
@@ -1000,7 +1001,7 @@ static int skl_tune_iz_hashing(struct intel_engine_cs *ring)
 		 * Only consider slices where one, and only one, subslice has 7
 		 * EUs
 		 */
-		if (hweight8(dev_priv->info.subslice_7eu[i]) != 1)
+		if (!is_power_of_2(dev_priv->info.subslice_7eu[i]))
 			continue;
 
 		/*
-- 
2.5.0

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#1285058 — Re: [PATCH 03/10] i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2(dev_priv->info.subslice_7eu[i])"

FromDaniel Vetter <daniel@ffwll.ch>
Date2015-12-07 08:50 +0100
SubjectRe: [PATCH 03/10] i915: Replace "hweight8(dev_priv->info.subslice_7eu[i]) != 1" with "!is_power_of_2(dev_priv->info.subslice_7eu[i])"
Message-ID<qCYIx-1vP-1@gated-at.bofh.it>
In reply to#1284838
On Sun, Dec 06, 2015 at 06:26:30PM +0800, Zhaoxiu Zeng wrote:
> From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
> 
> Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>

Queued for -next, thanks for the patch.
-Daniel

> ---
>  drivers/gpu/drm/i915/intel_ringbuffer.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index 9461a23..16c8cf1 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -27,6 +27,7 @@
>   *
>   */
>  
> +#include <linux/log2.h>
>  #include <drm/drmP.h>
>  #include "i915_drv.h"
>  #include <drm/i915_drm.h>
> @@ -1000,7 +1001,7 @@ static int skl_tune_iz_hashing(struct intel_engine_cs *ring)
>  		 * Only consider slices where one, and only one, subslice has 7
>  		 * EUs
>  		 */
> -		if (hweight8(dev_priv->info.subslice_7eu[i]) != 1)
> +		if (!is_power_of_2(dev_priv->info.subslice_7eu[i]))
>  			continue;
>  
>  		/*
> -- 
> 2.5.0
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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#1285081

FromJani Nikula <jani.nikula@linux.intel.com>
Date2015-12-07 09:40 +0100
Message-ID<qCZuV-24d-1@gated-at.bofh.it>
In reply to#1284838
On Sun, 06 Dec 2015, Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com> wrote:
> From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
>
> Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>

I'd like to see a commit message describing what is done and why, even
for trivial changes. Now the subject line is essentially the diff in
plain English, which adds no information to the patch itself.

It doesn't even say that this should be a non-functional change.

BR,
Jani.


> ---
>  drivers/gpu/drm/i915/intel_ringbuffer.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index 9461a23..16c8cf1 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -27,6 +27,7 @@
>   *
>   */
>  
> +#include <linux/log2.h>
>  #include <drm/drmP.h>
>  #include "i915_drv.h"
>  #include <drm/i915_drm.h>
> @@ -1000,7 +1001,7 @@ static int skl_tune_iz_hashing(struct intel_engine_cs *ring)
>  		 * Only consider slices where one, and only one, subslice has 7
>  		 * EUs
>  		 */
> -		if (hweight8(dev_priv->info.subslice_7eu[i]) != 1)
> +		if (!is_power_of_2(dev_priv->info.subslice_7eu[i]))
>  			continue;
>  
>  		/*

-- 
Jani Nikula, Intel Open Source Technology Center
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