[v3] drm/print: add drm_debug_enabled()

Submitted by Jani Nikula on Oct. 1, 2019, 2:06 p.m.

Details

Message ID 20191001140614.26909-1-jani.nikula@intel.com
State Accepted
Commit f0a8f533adc202f7dc83961c85187794eaed9cec
Headers show
Series "drm/print: add and use drm_debug_enabled()" ( rev: 3 ) in Intel GFX

Not browsing as part of any series.

Commit Message

Jani Nikula Oct. 1, 2019, 2:06 p.m.
Add helper to check if a drm debug category is enabled. Convert drm core
to use it. No functional changes.

v2: Move unlikely() to drm_debug_enabled() (Eric)

v3: Keep unlikely() when combined with other conditions (Eric)

Cc: Eric Engestrom <eric@engestrom.ch>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/drm_atomic_uapi.c     | 2 +-
 drivers/gpu/drm/drm_dp_mst_topology.c | 6 +++---
 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           | 4 ++--
 drivers/gpu/drm/drm_vblank.c          | 6 +++---
 include/drm/drm_print.h               | 5 +++++
 8 files changed, 18 insertions(+), 13 deletions(-)

Patch hide | download patch | download mbox

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index 7a26bfb5329c..0d466d3b0809 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -1405,7 +1405,7 @@  int drm_mode_atomic_ioctl(struct drm_device *dev,
 	} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
 		ret = drm_atomic_nonblocking_commit(state);
 	} else {
-		if (unlikely(drm_debug & DRM_UT_STATE))
+		if (drm_debug_enabled(DRM_UT_STATE))
 			drm_atomic_print_state(state);
 
 		ret = drm_atomic_commit(state);
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index e6801db54d0f..6b14b63b8d62 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1179,7 +1179,7 @@  static int drm_dp_mst_wait_tx_reply(struct drm_dp_mst_branch *mstb,
 		}
 	}
 out:
-	if (unlikely(ret == -EIO && drm_debug & DRM_UT_DP)) {
+	if (unlikely(ret == -EIO) && drm_debug_enabled(DRM_UT_DP)) {
 		struct drm_printer p = drm_debug_printer(DBG_PREFIX);
 
 		drm_dp_mst_dump_sideband_msg_tx(&p, txmsg);
@@ -2322,7 +2322,7 @@  static int process_single_tx_qlock(struct drm_dp_mst_topology_mgr *mgr,
 	idx += tosend + 1;
 
 	ret = drm_dp_send_sideband_msg(mgr, up, chunk, idx);
-	if (unlikely(ret && drm_debug & DRM_UT_DP)) {
+	if (unlikely(ret) && drm_debug_enabled(DRM_UT_DP)) {
 		struct drm_printer p = drm_debug_printer(DBG_PREFIX);
 
 		drm_printf(&p, "sideband msg failed to send\n");
@@ -2389,7 +2389,7 @@  static void drm_dp_queue_down_tx(struct drm_dp_mst_topology_mgr *mgr,
 	mutex_lock(&mgr->qlock);
 	list_add_tail(&txmsg->next, &mgr->tx_msg_downq);
 
-	if (unlikely(drm_debug & DRM_UT_DP)) {
+	if (drm_debug_enabled(DRM_UT_DP)) {
 		struct drm_printer p = drm_debug_printer(DBG_PREFIX);
 
 		drm_dp_mst_dump_sideband_msg_tx(&p, txmsg);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 3c9703b08491..0552175313cb 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1651,7 +1651,7 @@  static void connector_bad_edid(struct drm_connector *connector,
 {
 	int i;
 
-	if (connector->bad_edid_counter++ && !(drm_debug & DRM_UT_KMS))
+	if (connector->bad_edid_counter++ && !drm_debug_enabled(DRM_UT_KMS))
 		return;
 
 	dev_warn(connector->dev->dev,
diff --git a/drivers/gpu/drm/drm_edid_load.c b/drivers/gpu/drm/drm_edid_load.c
index d38b3b255926..37d8ba3ddb46 100644
--- a/drivers/gpu/drm/drm_edid_load.c
+++ b/drivers/gpu/drm/drm_edid_load.c
@@ -175,7 +175,7 @@  static void *edid_load(struct drm_connector *connector, const char *name,
 	u8 *edid;
 	int fwsize, builtin;
 	int i, valid_extensions = 0;
-	bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
+	bool print_bad_edid = !connector->bad_edid_counter || drm_debug_enabled(DRM_UT_KMS);
 
 	builtin = match_string(generic_edid_name, GENERIC_EDIDS, name);
 	if (builtin >= 0) {
diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index f8154316a3b0..ccfb5b33c5e3 100644
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -783,7 +783,7 @@  static int mipi_dbi_spi1e_transfer(struct mipi_dbi *dbi, int dc,
 	int i, ret;
 	u8 *dst;
 
-	if (drm_debug & DRM_UT_DRIVER)
+	if (drm_debug_enabled(DRM_UT_DRIVER))
 		pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n",
 			 __func__, dc, max_chunk);
 
@@ -907,7 +907,7 @@  static int mipi_dbi_spi1_transfer(struct mipi_dbi *dbi, int dc,
 	max_chunk = dbi->tx_buf9_len;
 	dst16 = dbi->tx_buf9;
 
-	if (drm_debug & DRM_UT_DRIVER)
+	if (drm_debug_enabled(DRM_UT_DRIVER))
 		pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n",
 			 __func__, dc, max_chunk);
 
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
index 1ade3a917c10..9a25d73c155c 100644
--- a/drivers/gpu/drm/drm_print.c
+++ b/drivers/gpu/drm/drm_print.c
@@ -262,7 +262,7 @@  void drm_dev_dbg(const struct device *dev, unsigned int category,
 	struct va_format vaf;
 	va_list args;
 
-	if (!(drm_debug & category))
+	if (!drm_debug_enabled(category))
 		return;
 
 	va_start(args, format);
@@ -285,7 +285,7 @@  void drm_dbg(unsigned int category, const char *format, ...)
 	struct va_format vaf;
 	va_list args;
 
-	if (!(drm_debug & category))
+	if (!drm_debug_enabled(category))
 		return;
 
 	va_start(args, format);
diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
index 9c6899758bc9..4f7962b6427b 100644
--- a/drivers/gpu/drm/drm_vblank.c
+++ b/drivers/gpu/drm/drm_vblank.c
@@ -332,7 +332,7 @@  u64 drm_crtc_accurate_vblank_count(struct drm_crtc *crtc)
 	u64 vblank;
 	unsigned long flags;
 
-	WARN_ONCE(drm_debug & DRM_UT_VBL && !dev->driver->get_vblank_timestamp,
+	WARN_ONCE(drm_debug_enabled(DRM_UT_VBL) && !dev->driver->get_vblank_timestamp,
 		  "This function requires support for accurate vblank timestamps.");
 
 	spin_lock_irqsave(&dev->vblank_time_lock, flags);
@@ -706,7 +706,7 @@  bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
 	 */
 	*vblank_time = ktime_sub_ns(etime, delta_ns);
 
-	if ((drm_debug & DRM_UT_VBL) == 0)
+	if (!drm_debug_enabled(DRM_UT_VBL))
 		return true;
 
 	ts_etime = ktime_to_timespec64(etime);
@@ -1352,7 +1352,7 @@  void drm_vblank_restore(struct drm_device *dev, unsigned int pipe)
 	assert_spin_locked(&dev->vblank_time_lock);
 
 	vblank = &dev->vblank[pipe];
-	WARN_ONCE((drm_debug & DRM_UT_VBL) && !vblank->framedur_ns,
+	WARN_ONCE(drm_debug_enabled(DRM_UT_VBL) && !vblank->framedur_ns,
 		  "Cannot compute missed vblanks without frame duration\n");
 	framedur_ns = vblank->framedur_ns;
 
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index fc9f218ab715..5b8049992c24 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -293,6 +293,11 @@  static inline struct drm_printer drm_err_printer(const char *prefix)
 #define DRM_UT_LEASE		0x80
 #define DRM_UT_DP		0x100
 
+static inline bool drm_debug_enabled(unsigned int category)
+{
+	return unlikely(drm_debug & category);
+}
+
 __printf(3, 4)
 void drm_dev_printk(const struct device *dev, const char *level,
 		    const char *format, ...);

Comments

On Tuesday, 2019-10-01 17:06:14 +0300, Jani Nikula wrote:
> Add helper to check if a drm debug category is enabled. Convert drm core
> to use it. No functional changes.
> 
> v2: Move unlikely() to drm_debug_enabled() (Eric)
> 
> v3: Keep unlikely() when combined with other conditions (Eric)
> 
> Cc: Eric Engestrom <eric@engestrom.ch>

Reviewed-by: Eric Engestrom <eric@engestrom.ch>

> Acked-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> ---
>  drivers/gpu/drm/drm_atomic_uapi.c     | 2 +-
>  drivers/gpu/drm/drm_dp_mst_topology.c | 6 +++---
>  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           | 4 ++--
>  drivers/gpu/drm/drm_vblank.c          | 6 +++---
>  include/drm/drm_print.h               | 5 +++++
>  8 files changed, 18 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
> index 7a26bfb5329c..0d466d3b0809 100644
> --- a/drivers/gpu/drm/drm_atomic_uapi.c
> +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> @@ -1405,7 +1405,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
>  	} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
>  		ret = drm_atomic_nonblocking_commit(state);
>  	} else {
> -		if (unlikely(drm_debug & DRM_UT_STATE))
> +		if (drm_debug_enabled(DRM_UT_STATE))
>  			drm_atomic_print_state(state);
>  
>  		ret = drm_atomic_commit(state);
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
> index e6801db54d0f..6b14b63b8d62 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -1179,7 +1179,7 @@ static int drm_dp_mst_wait_tx_reply(struct drm_dp_mst_branch *mstb,
>  		}
>  	}
>  out:
> -	if (unlikely(ret == -EIO && drm_debug & DRM_UT_DP)) {
> +	if (unlikely(ret == -EIO) && drm_debug_enabled(DRM_UT_DP)) {
>  		struct drm_printer p = drm_debug_printer(DBG_PREFIX);
>  
>  		drm_dp_mst_dump_sideband_msg_tx(&p, txmsg);
> @@ -2322,7 +2322,7 @@ static int process_single_tx_qlock(struct drm_dp_mst_topology_mgr *mgr,
>  	idx += tosend + 1;
>  
>  	ret = drm_dp_send_sideband_msg(mgr, up, chunk, idx);
> -	if (unlikely(ret && drm_debug & DRM_UT_DP)) {
> +	if (unlikely(ret) && drm_debug_enabled(DRM_UT_DP)) {
>  		struct drm_printer p = drm_debug_printer(DBG_PREFIX);
>  
>  		drm_printf(&p, "sideband msg failed to send\n");
> @@ -2389,7 +2389,7 @@ static void drm_dp_queue_down_tx(struct drm_dp_mst_topology_mgr *mgr,
>  	mutex_lock(&mgr->qlock);
>  	list_add_tail(&txmsg->next, &mgr->tx_msg_downq);
>  
> -	if (unlikely(drm_debug & DRM_UT_DP)) {
> +	if (drm_debug_enabled(DRM_UT_DP)) {
>  		struct drm_printer p = drm_debug_printer(DBG_PREFIX);
>  
>  		drm_dp_mst_dump_sideband_msg_tx(&p, txmsg);
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 3c9703b08491..0552175313cb 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -1651,7 +1651,7 @@ static void connector_bad_edid(struct drm_connector *connector,
>  {
>  	int i;
>  
> -	if (connector->bad_edid_counter++ && !(drm_debug & DRM_UT_KMS))
> +	if (connector->bad_edid_counter++ && !drm_debug_enabled(DRM_UT_KMS))
>  		return;
>  
>  	dev_warn(connector->dev->dev,
> diff --git a/drivers/gpu/drm/drm_edid_load.c b/drivers/gpu/drm/drm_edid_load.c
> index d38b3b255926..37d8ba3ddb46 100644
> --- a/drivers/gpu/drm/drm_edid_load.c
> +++ b/drivers/gpu/drm/drm_edid_load.c
> @@ -175,7 +175,7 @@ static void *edid_load(struct drm_connector *connector, const char *name,
>  	u8 *edid;
>  	int fwsize, builtin;
>  	int i, valid_extensions = 0;
> -	bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
> +	bool print_bad_edid = !connector->bad_edid_counter || drm_debug_enabled(DRM_UT_KMS);
>  
>  	builtin = match_string(generic_edid_name, GENERIC_EDIDS, name);
>  	if (builtin >= 0) {
> diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
> index f8154316a3b0..ccfb5b33c5e3 100644
> --- a/drivers/gpu/drm/drm_mipi_dbi.c
> +++ b/drivers/gpu/drm/drm_mipi_dbi.c
> @@ -783,7 +783,7 @@ static int mipi_dbi_spi1e_transfer(struct mipi_dbi *dbi, int dc,
>  	int i, ret;
>  	u8 *dst;
>  
> -	if (drm_debug & DRM_UT_DRIVER)
> +	if (drm_debug_enabled(DRM_UT_DRIVER))
>  		pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n",
>  			 __func__, dc, max_chunk);
>  
> @@ -907,7 +907,7 @@ static int mipi_dbi_spi1_transfer(struct mipi_dbi *dbi, int dc,
>  	max_chunk = dbi->tx_buf9_len;
>  	dst16 = dbi->tx_buf9;
>  
> -	if (drm_debug & DRM_UT_DRIVER)
> +	if (drm_debug_enabled(DRM_UT_DRIVER))
>  		pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n",
>  			 __func__, dc, max_chunk);
>  
> diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
> index 1ade3a917c10..9a25d73c155c 100644
> --- a/drivers/gpu/drm/drm_print.c
> +++ b/drivers/gpu/drm/drm_print.c
> @@ -262,7 +262,7 @@ void drm_dev_dbg(const struct device *dev, unsigned int category,
>  	struct va_format vaf;
>  	va_list args;
>  
> -	if (!(drm_debug & category))
> +	if (!drm_debug_enabled(category))
>  		return;
>  
>  	va_start(args, format);
> @@ -285,7 +285,7 @@ void drm_dbg(unsigned int category, const char *format, ...)
>  	struct va_format vaf;
>  	va_list args;
>  
> -	if (!(drm_debug & category))
> +	if (!drm_debug_enabled(category))
>  		return;
>  
>  	va_start(args, format);
> diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
> index 9c6899758bc9..4f7962b6427b 100644
> --- a/drivers/gpu/drm/drm_vblank.c
> +++ b/drivers/gpu/drm/drm_vblank.c
> @@ -332,7 +332,7 @@ u64 drm_crtc_accurate_vblank_count(struct drm_crtc *crtc)
>  	u64 vblank;
>  	unsigned long flags;
>  
> -	WARN_ONCE(drm_debug & DRM_UT_VBL && !dev->driver->get_vblank_timestamp,
> +	WARN_ONCE(drm_debug_enabled(DRM_UT_VBL) && !dev->driver->get_vblank_timestamp,
>  		  "This function requires support for accurate vblank timestamps.");
>  
>  	spin_lock_irqsave(&dev->vblank_time_lock, flags);
> @@ -706,7 +706,7 @@ bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
>  	 */
>  	*vblank_time = ktime_sub_ns(etime, delta_ns);
>  
> -	if ((drm_debug & DRM_UT_VBL) == 0)
> +	if (!drm_debug_enabled(DRM_UT_VBL))
>  		return true;
>  
>  	ts_etime = ktime_to_timespec64(etime);
> @@ -1352,7 +1352,7 @@ void drm_vblank_restore(struct drm_device *dev, unsigned int pipe)
>  	assert_spin_locked(&dev->vblank_time_lock);
>  
>  	vblank = &dev->vblank[pipe];
> -	WARN_ONCE((drm_debug & DRM_UT_VBL) && !vblank->framedur_ns,
> +	WARN_ONCE(drm_debug_enabled(DRM_UT_VBL) && !vblank->framedur_ns,
>  		  "Cannot compute missed vblanks without frame duration\n");
>  	framedur_ns = vblank->framedur_ns;
>  
> diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
> index fc9f218ab715..5b8049992c24 100644
> --- a/include/drm/drm_print.h
> +++ b/include/drm/drm_print.h
> @@ -293,6 +293,11 @@ static inline struct drm_printer drm_err_printer(const char *prefix)
>  #define DRM_UT_LEASE		0x80
>  #define DRM_UT_DP		0x100
>  
> +static inline bool drm_debug_enabled(unsigned int category)
> +{
> +	return unlikely(drm_debug & category);
> +}
> +
>  __printf(3, 4)
>  void drm_dev_printk(const struct device *dev, const char *level,
>  		    const char *format, ...);
> -- 
> 2.20.1
>