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Jani Nikula

2019-Sep-24 12:58 UTC

[Nouveau] [PATCH v2 0/9] drm/print: add and use drm_debug_enabled()

Hi all, v2 of [1], a little refactoring around drm_debug access to
abstract it better. There shouldn't be any functional changes.

I'd appreciate acks for merging the lot via drm-misc. If there are any
objections to that, we'll need to postpone the last patch until
everything has been merged and converted in drm-next.

BR,
Jani.

Cc: Eric Engestrom <eric.engestrom at intel.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: Christian König <christian.koenig at amd.com>
Cc: David (ChunMing) Zhou <David1.Zhou at amd.com>
Cc: amd-gfx at lists.freedesktop.org
Cc: Ben Skeggs <bskeggs at redhat.com>
Cc: nouveau at lists.freedesktop.org
Cc: Rob Clark <robdclark at gmail.com>
Cc: Sean Paul <sean at poorly.run>
Cc: linux-arm-msm at vger.kernel.org
Cc: freedreno at lists.freedesktop.org
Cc: Francisco Jerez <currojerez at riseup.net>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: Russell King <linux+etnaviv at armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner at gmail.com>
Cc: etnaviv at lists.freedesktop.org


[1] http://mid.mail-archive.com/cover.1568375189.git.jani.nikula at intel.com

Jani Nikula (9):
  drm/print: move drm_debug variable to drm_print.[ch]
  drm/print: add drm_debug_enabled()
  drm/etnaviv: use drm_debug_enabled() to check for debug categories
  drm/i2c/sil164: use drm_debug_enabled() to check for debug categories
  drm/i915: use drm_debug_enabled() to check for debug categories
  drm/msm: use drm_debug_enabled() to check for debug categories
  drm/nouveau: use drm_debug_enabled() to check for debug categories
  drm/amdgpu: use drm_debug_enabled() to check for debug categories
  drm/print: rename drm_debug to __drm_debug to discourage use

 drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c   |  4 ++--
 drivers/gpu/drm/drm_atomic_uapi.c            |  2 +-
 drivers/gpu/drm/drm_dp_mst_topology.c        |  6 ++---
 drivers/gpu/drm/drm_drv.c                    | 17 ---------------
 drivers/gpu/drm/drm_edid.c                   |  2 +-
 drivers/gpu/drm/drm_edid_load.c              |  2 +-
 drivers/gpu/drm/drm_mipi_dbi.c               |  4 ++--
 drivers/gpu/drm/drm_print.c                  | 23 ++++++++++++++++++--
 drivers/gpu/drm/drm_vblank.c                 |  6 ++---
 drivers/gpu/drm/etnaviv/etnaviv_buffer.c     |  8 +++----
 drivers/gpu/drm/i2c/sil164_drv.c             |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c |  4 ++--
 drivers/gpu/drm/i915/display/intel_dp.c      |  2 +-
 drivers/gpu/drm/i915/i915_drv.c              |  2 +-
 drivers/gpu/drm/i915/i915_gem.h              |  2 +-
 drivers/gpu/drm/i915/i915_utils.c            |  2 +-
 drivers/gpu/drm/i915/intel_pm.c              |  2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h      |  4 ++--
 drivers/gpu/drm/nouveau/dispnv50/disp.h      |  4 ++--
 drivers/gpu/drm/nouveau/nouveau_drv.h        |  4 ++--
 include/drm/drm_drv.h                        |  2 --
 include/drm/drm_print.h                      |  8 +++++++
 22 files changed, 60 insertions(+), 52 deletions(-)

-- 
2.20.1

Jani Nikula

2019-Sep-24 12:59 UTC

head link

[Nouveau] [PATCH v2 7/9] drm/nouveau: use drm_debug_enabled() to check for debug categories

Allow better abstraction of the drm_debug global variable in the
future. No functional changes.

v2: move unlikely() to drm_debug_enabled()

Cc: Ben Skeggs <bskeggs at redhat.com>
Cc: nouveau at lists.freedesktop.org
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/nouveau/dispnv50/disp.h | 4 ++--
 drivers/gpu/drm/nouveau/nouveau_drv.h   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.h
b/drivers/gpu/drm/nouveau/dispnv50/disp.h
index 7c41b0599d1a..c0a79531b087 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.h
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.h
@@ -78,14 +78,14 @@ void evo_kick(u32 *, struct nv50_dmac *);
 
 #define evo_mthd(p, m, s) do {						\
 	const u32 _m = (m), _s = (s);					\
-	if (drm_debug & DRM_UT_KMS)					\
+	if (drm_debug_enabled(DRM_UT_KMS))				\
 		pr_err("%04x %d %s\n", _m, _s, __func__);		\
 	*((p)++) = ((_s << 18) | _m);					\
 } while(0)
 
 #define evo_data(p, d) do {						\
 	const u32 _d = (d);						\
-	if (drm_debug & DRM_UT_KMS)					\
+	if (drm_debug_enabled(DRM_UT_KMS))				\
 		pr_err("\t%08x\n", _d);					\
 	*((p)++) = _d;							\
 } while(0)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h
b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 70f34cacc552..da8c46e09943 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -248,11 +248,11 @@ void nouveau_drm_device_remove(struct drm_device *dev);
 #define NV_INFO(drm,f,a...) NV_PRINTK(info, &(drm)->client, f, ##a)
 
 #define NV_DEBUG(drm,f,a...) do {                                             
\
-	if (unlikely(drm_debug & DRM_UT_DRIVER))                               \
+	if (drm_debug_enabled(DRM_UT_DRIVER))                                  \
 		NV_PRINTK(info, &(drm)->client, f, ##a);                       \
 } while(0)
 #define NV_ATOMIC(drm,f,a...) do {                                            
\
-	if (unlikely(drm_debug & DRM_UT_ATOMIC))                               \
+	if (drm_debug_enabled(DRM_UT_ATOMIC))                                  \
 		NV_PRINTK(info, &(drm)->client, f, ##a);                       \
 } while(0)
 
-- 
2.20.1

Eric Engestrom

2019-Sep-26 07:56 UTC

head link

[Nouveau] [PATCH v2 0/9] drm/print: add and use drm_debug_enabled()

On Tuesday, 2019-09-24 15:58:56 +0300, Jani Nikula
wrote:> Hi all, v2 of [1], a little refactoring around drm_debug access to
> abstract it better. There shouldn't be any functional changes.
> 
> I'd appreciate acks for merging the lot via drm-misc. If there are any
> objections to that, we'll need to postpone the last patch until
> everything has been merged and converted in drm-next.
> 
> BR,
> Jani.
> 
> Cc: Eric Engestrom <eric.engestrom at intel.com>
> Cc: Alex Deucher <alexander.deucher at amd.com>
> Cc: Christian K?nig <christian.koenig at amd.com>
> Cc: David (ChunMing) Zhou <David1.Zhou at amd.com>
> Cc: amd-gfx at lists.freedesktop.org
> Cc: Ben Skeggs <bskeggs at redhat.com>
> Cc: nouveau at lists.freedesktop.org
> Cc: Rob Clark <robdclark at gmail.com>
> Cc: Sean Paul <sean at poorly.run>
> Cc: linux-arm-msm at vger.kernel.org
> Cc: freedreno at lists.freedesktop.org
> Cc: Francisco Jerez <currojerez at riseup.net>
> Cc: Lucas Stach <l.stach at pengutronix.de>
> Cc: Russell King <linux+etnaviv at armlinux.org.uk>
> Cc: Christian Gmeiner <christian.gmeiner at gmail.com>
> Cc: etnaviv at lists.freedesktop.org
> 
> 
> [1] http://mid.mail-archive.com/cover.1568375189.git.jani.nikula at
intel.com
> 
> Jani Nikula (9):
>   drm/print: move drm_debug variable to drm_print.[ch]
>   drm/print: add drm_debug_enabled()
>   drm/i915: use drm_debug_enabled() to check for debug categories
>   drm/print: rename drm_debug to __drm_debug to discourage use
The above four patches are:
Reviewed-by: Eric Engestrom <eric at engestrom.ch>

Did you check to make sure the `unlikely()` is propagated correctly
outside the `drm_debug_enabled()` call?

Jani Nikula

2019-Oct-01 11:03 UTC

head link

[Nouveau] [PATCH v2 0/9] drm/print: add and use drm_debug_enabled()

On Thu, 26 Sep 2019, Eric Engestrom <eric at engestrom.ch>
wrote:> On Tuesday, 2019-09-24 15:58:56 +0300, Jani Nikula wrote:
>> Hi all, v2 of [1], a little refactoring around drm_debug access to
>> abstract it better. There shouldn't be any functional changes.
>> 
>> I'd appreciate acks for merging the lot via drm-misc. If there are
any
>> objections to that, we'll need to postpone the last patch until
>> everything has been merged and converted in drm-next.
>> 
>> BR,
>> Jani.
>> 
>> Cc: Eric Engestrom <eric.engestrom at intel.com>
>> Cc: Alex Deucher <alexander.deucher at amd.com>
>> Cc: Christian König <christian.koenig at amd.com>
>> Cc: David (ChunMing) Zhou <David1.Zhou at amd.com>
>> Cc: amd-gfx at lists.freedesktop.org
>> Cc: Ben Skeggs <bskeggs at redhat.com>
>> Cc: nouveau at lists.freedesktop.org
>> Cc: Rob Clark <robdclark at gmail.com>
>> Cc: Sean Paul <sean at poorly.run>
>> Cc: linux-arm-msm at vger.kernel.org
>> Cc: freedreno at lists.freedesktop.org
>> Cc: Francisco Jerez <currojerez at riseup.net>
>> Cc: Lucas Stach <l.stach at pengutronix.de>
>> Cc: Russell King <linux+etnaviv at armlinux.org.uk>
>> Cc: Christian Gmeiner <christian.gmeiner at gmail.com>
>> Cc: etnaviv at lists.freedesktop.org
>> 
>> 
>> [1] http://mid.mail-archive.com/cover.1568375189.git.jani.nikula at
intel.com
>> 
>> Jani Nikula (9):
>>   drm/print: move drm_debug variable to drm_print.[ch]
>>   drm/print: add drm_debug_enabled()
>>   drm/i915: use drm_debug_enabled() to check for debug categories
>>   drm/print: rename drm_debug to __drm_debug to discourage use
>
> The above four patches are:
> Reviewed-by: Eric Engestrom <eric at engestrom.ch>
>
> Did you check to make sure the `unlikely()` is propagated correctly
> outside the `drm_debug_enabled()` call?
I did now.

Having drm_debug_enabled() as a macro vs. as an inline function does not
seem to make a difference, so I think the inline is clearly preferrable.

However, for example

	unlikely(foo && drm_debug & DRM_UT_DP)

does produce code different from

	(foo && drm_debug_enabled(DRM_UT_DP))

indicating that the unlikely() within drm_debug_enabled() does not
propagate to the whole condition. It's possible to retain the same
assembly output with

	(unlikely(foo) && drm_debug_enabled(DRM_UT_DP))

but it's unclear to me whether this is really worth it, either
readability or performance wise.

Thoughts?

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center

Jani Nikula

2019-Oct-02 14:11 UTC

head link

[Nouveau] [PATCH v2 0/9] drm/print: add and use drm_debug_enabled()

On Tue, 24 Sep 2019, Jani Nikula <jani.nikula at intel.com>
wrote:>   drm/print: move drm_debug variable to drm_print.[ch]
>   drm/print: add drm_debug_enabled()
>   drm/etnaviv: use drm_debug_enabled() to check for debug categories
>   drm/i2c/sil164: use drm_debug_enabled() to check for debug categories
>   drm/msm: use drm_debug_enabled() to check for debug categories
Pushed the above patches to drm-misc-next, thanks for the reviews and
acks!

The below i915 and amdgpu patches conflict on drm-misc-next, and I
haven't received any feedback on nouveau.
>   drm/i915: use drm_debug_enabled() to check for debug categories
>   drm/nouveau: use drm_debug_enabled() to check for debug categories
>   drm/amdgpu: use drm_debug_enabled() to check for debug categories
>   drm/print: rename drm_debug to __drm_debug to discourage use
BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center

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