2011-04-18 03:36:02

by Joe Perches

[permalink] [raw]
Subject: [PATCH 0/2] drm: Message logging cleanups

Reduce the text space required and verify debug arguments.

Joe Perches (2):
drm: Create and use drm_err
drm: Verify debug message arguments

drivers/gpu/drm/drm_irq.c | 9 +++++----
drivers/gpu/drm/drm_stub.c | 21 +++++++++++++++++++++
drivers/gpu/drm/i915/intel_bios.c | 6 +++---
drivers/gpu/drm/i915/intel_display.c | 8 ++++----
drivers/gpu/drm/radeon/radeon_display.c | 5 +++--
include/drm/drmP.h | 24 +++++++++---------------
6 files changed, 45 insertions(+), 28 deletions(-)

--
1.7.4.2.g597a6.dirty


2011-04-18 03:36:12

by Joe Perches

[permalink] [raw]
Subject: [PATCH 1/2] drm: Create and use drm_err

Reduce drm text size ~1% by using drm_err and
printf extension %pV to emit error messages.

Remove unused macro DRM_MEM_ERROR.

$ size drivers/gpu/drm/built-in.o*
text data bss dec hex filename
361159 9663 256 371078 5a986 drivers/gpu/drm/built-in.o.new
365416 9663 256 375335 5ba27 drivers/gpu/drm/built-in.o.old

Signed-off-by: Joe Perches <[email protected]>
---
drivers/gpu/drm/drm_stub.c | 21 +++++++++++++++++++++
include/drm/drmP.h | 21 +++++++--------------
2 files changed, 28 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 001273d..6d7b083 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -62,6 +62,26 @@ struct idr drm_minors_idr;
struct class *drm_class;
struct proc_dir_entry *drm_proc_root;
struct dentry *drm_debugfs_root;
+
+int drm_err(const char *func, const char *format, ...)
+{
+ struct va_format vaf;
+ va_list args;
+ int r;
+
+ va_start(args, format);
+
+ vaf.fmt = format;
+ vaf.va = &args;
+
+ r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);
+
+ va_end(args);
+
+ return r;
+}
+EXPORT_SYMBOL(drm_err);
+
void drm_ut_debug_printk(unsigned int request_level,
const char *prefix,
const char *function_name,
@@ -78,6 +98,7 @@ void drm_ut_debug_printk(unsigned int request_level,
}
}
EXPORT_SYMBOL(drm_ut_debug_printk);
+
static int drm_minor_get_id(struct drm_device *dev, int type)
{
int new_id;
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 202424d..22db51d 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -126,6 +126,9 @@ extern void drm_ut_debug_printk(unsigned int request_level,
const char *prefix,
const char *function_name,
const char *format, ...);
+extern __attribute__((format (printf, 2, 3)))
+int drm_err(const char *func, const char *format, ...);
+
/***********************************************************************/
/** \name DRM template customization defaults */
/*@{*/
@@ -181,21 +184,11 @@ extern void drm_ut_debug_printk(unsigned int request_level,
* \param fmt printf() like format string.
* \param arg arguments
*/
-#define DRM_ERROR(fmt, arg...) \
- printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
-
-/**
- * Memory error output.
- *
- * \param area memory area where the error occurred.
- * \param fmt printf() like format string.
- * \param arg arguments
- */
-#define DRM_MEM_ERROR(area, fmt, arg...) \
- printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
- drm_mem_stats[area].name , ##arg)
+#define DRM_ERROR(fmt, ...) \
+ drm_err(__func__, fmt, ##__VA_ARGS__)

-#define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
+#define DRM_INFO(fmt, ...) \
+ printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)

/**
* Debug output.
--
1.7.4.2.g597a6.dirty

2011-04-18 03:36:16

by Joe Perches

[permalink] [raw]
Subject: [PATCH 2/2] drm: Verify debug message arguments

Add __attribute__((format (printf, 4, 5))) to drm_ut_debug_printk
and fix fallout.

Signed-off-by: Joe Perches <[email protected]>
---
drivers/gpu/drm/drm_irq.c | 9 +++++----
drivers/gpu/drm/i915/intel_bios.c | 6 +++---
drivers/gpu/drm/i915/intel_display.c | 8 ++++----
drivers/gpu/drm/radeon/radeon_display.c | 5 +++--
include/drm/drmP.h | 3 ++-
5 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 741457b..62ced75 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -684,10 +684,11 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
*/
*vblank_time = ns_to_timeval(timeval_to_ns(&raw_time) - delta_ns);

- DRM_DEBUG("crtc %d : v %d p(%d,%d)@ %d.%d -> %d.%d [e %d us, %d rep]\n",
- crtc, (int) vbl_status, hpos, vpos, raw_time.tv_sec,
- raw_time.tv_usec, vblank_time->tv_sec, vblank_time->tv_usec,
- (int) duration_ns/1000, i);
+ DRM_DEBUG("crtc %d : v %d p(%d,%d)@ %ld.%ld -> %ld.%ld [e %d us, %d rep]\n",
+ crtc, (int)vbl_status, hpos, vpos,
+ (long)raw_time.tv_sec, (long)raw_time.tv_usec,
+ (long)vblank_time->tv_sec, (long)vblank_time->tv_usec,
+ (int)duration_ns/1000, i);

vbl_status = DRM_VBLANKTIME_SCANOUTPOS_METHOD;
if (invbl)
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index fb5b4d4..927442a 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -214,9 +214,9 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
i915_lvds_downclock) {
dev_priv->lvds_downclock_avail = 1;
dev_priv->lvds_downclock = temp_downclock;
- DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
- "Normal Clock %dKHz, downclock %dKHz\n",
- temp_downclock, panel_fixed_mode->clock);
+ DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
+ "Normal Clock %dKHz, downclock %dKHz\n",
+ temp_downclock, panel_fixed_mode->clock);
}
return;
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 432fc04..63bc2af 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3497,11 +3497,11 @@ static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
1000;
entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);

- DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required);
+ DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);

wm_size = fifo_size - (entries_required + wm->guard_size);

- DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
+ DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);

/* Don't promote wm_size to unsigned... */
if (wm_size > (long)wm->max_wm)
@@ -3820,13 +3820,13 @@ static bool g4x_check_srwm(struct drm_device *dev,
display_wm, cursor_wm);

if (display_wm > display->max_wm) {
- DRM_DEBUG_KMS("display watermark is too large(%d), disabling\n",
+ DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
display_wm, display->max_wm);
return false;
}

if (cursor_wm > cursor->max_wm) {
- DRM_DEBUG_KMS("cursor watermark is too large(%d), disabling\n",
+ DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
cursor_wm, cursor->max_wm);
return false;
}
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index bdbab5c..0671934 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1087,8 +1087,9 @@ void radeon_compute_pll_legacy(struct radeon_pll *pll,
*frac_fb_div_p = best_frac_feedback_div;
*ref_div_p = best_ref_div;
*post_div_p = best_post_div;
- DRM_DEBUG_KMS("%d %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
- freq, best_freq / 1000, best_feedback_div, best_frac_feedback_div,
+ DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
+ (long long)freq,
+ best_freq / 1000, best_feedback_div, best_frac_feedback_div,
best_ref_div, best_post_div);

}
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 22db51d..4ab866e 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -122,7 +122,8 @@ struct drm_device;
* using the DRM_DEBUG_KMS and DRM_DEBUG.
*/

-extern void drm_ut_debug_printk(unsigned int request_level,
+extern __attribute__((format (printf, 4, 5)))
+void drm_ut_debug_printk(unsigned int request_level,
const char *prefix,
const char *function_name,
const char *format, ...);
--
1.7.4.2.g597a6.dirty

2011-04-18 23:01:05

by David Airlie

[permalink] [raw]
Subject: Re: [PATCH 1/2] drm: Create and use drm_err

On Mon, 2011-04-18 at 15:56 -0700, Ian Romanick wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 04/17/2011 08:35 PM, Joe Perches wrote:
> > Reduce drm text size ~1% by using drm_err and
> > printf extension %pV to emit error messages.
> >
> > Remove unused macro DRM_MEM_ERROR.
> >
> > $ size drivers/gpu/drm/built-in.o*
> > text data bss dec hex filename
> > 361159 9663 256 371078 5a986 drivers/gpu/drm/built-in.o.new
> > 365416 9663 256 375335 5ba27 drivers/gpu/drm/built-in.o.old
> >
> > Signed-off-by: Joe Perches <[email protected]>
> > ---
> > drivers/gpu/drm/drm_stub.c | 21 +++++++++++++++++++++
> > include/drm/drmP.h | 21 +++++++--------------
> > 2 files changed, 28 insertions(+), 14 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
> > index 001273d..6d7b083 100644
> > --- a/drivers/gpu/drm/drm_stub.c
> > +++ b/drivers/gpu/drm/drm_stub.c
> > @@ -62,6 +62,26 @@ struct idr drm_minors_idr;
> > struct class *drm_class;
> > struct proc_dir_entry *drm_proc_root;
> > struct dentry *drm_debugfs_root;
> > +
> > +int drm_err(const char *func, const char *format, ...)
> > +{
> > + struct va_format vaf;
> > + va_list args;
> > + int r;
> > +
> > + va_start(args, format);
> > +
> > + vaf.fmt = format;
> > + vaf.va = &args;
> > +
> > + r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);
>
> This code has ben reorganized a lot over the years, so this comment may
> be bogus. However...
>
> I believe that DRM_NAME is a define, and drm_stub.c is in common code.
> As a result, won't this change cause something different to get logged?

No I think we hacked that out a long time past thankfully, so its always
"drm" now.

Dave.

2011-04-18 23:02:19

by Ian Romanick

[permalink] [raw]
Subject: Re: [PATCH 1/2] drm: Create and use drm_err

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 04/17/2011 08:35 PM, Joe Perches wrote:
> Reduce drm text size ~1% by using drm_err and
> printf extension %pV to emit error messages.
>
> Remove unused macro DRM_MEM_ERROR.
>
> $ size drivers/gpu/drm/built-in.o*
> text data bss dec hex filename
> 361159 9663 256 371078 5a986 drivers/gpu/drm/built-in.o.new
> 365416 9663 256 375335 5ba27 drivers/gpu/drm/built-in.o.old
>
> Signed-off-by: Joe Perches <[email protected]>
> ---
> drivers/gpu/drm/drm_stub.c | 21 +++++++++++++++++++++
> include/drm/drmP.h | 21 +++++++--------------
> 2 files changed, 28 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
> index 001273d..6d7b083 100644
> --- a/drivers/gpu/drm/drm_stub.c
> +++ b/drivers/gpu/drm/drm_stub.c
> @@ -62,6 +62,26 @@ struct idr drm_minors_idr;
> struct class *drm_class;
> struct proc_dir_entry *drm_proc_root;
> struct dentry *drm_debugfs_root;
> +
> +int drm_err(const char *func, const char *format, ...)
> +{
> + struct va_format vaf;
> + va_list args;
> + int r;
> +
> + va_start(args, format);
> +
> + vaf.fmt = format;
> + vaf.va = &args;
> +
> + r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);

This code has ben reorganized a lot over the years, so this comment may
be bogus. However...

I believe that DRM_NAME is a define, and drm_stub.c is in common code.
As a result, won't this change cause something different to get logged?

> +
> + va_end(args);
> +
> + return r;
> +}
> +EXPORT_SYMBOL(drm_err);
> +
> void drm_ut_debug_printk(unsigned int request_level,
> const char *prefix,
> const char *function_name,
> @@ -78,6 +98,7 @@ void drm_ut_debug_printk(unsigned int request_level,
> }
> }
> EXPORT_SYMBOL(drm_ut_debug_printk);
> +
> static int drm_minor_get_id(struct drm_device *dev, int type)
> {
> int new_id;
> diff --git a/include/drm/drmP.h b/include/drm/drmP.h
> index 202424d..22db51d 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -126,6 +126,9 @@ extern void drm_ut_debug_printk(unsigned int request_level,
> const char *prefix,
> const char *function_name,
> const char *format, ...);
> +extern __attribute__((format (printf, 2, 3)))
> +int drm_err(const char *func, const char *format, ...);
> +
> /***********************************************************************/
> /** \name DRM template customization defaults */
> /*@{*/
> @@ -181,21 +184,11 @@ extern void drm_ut_debug_printk(unsigned int request_level,
> * \param fmt printf() like format string.
> * \param arg arguments
> */
> -#define DRM_ERROR(fmt, arg...) \
> - printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
> -
> -/**
> - * Memory error output.
> - *
> - * \param area memory area where the error occurred.
> - * \param fmt printf() like format string.
> - * \param arg arguments
> - */
> -#define DRM_MEM_ERROR(area, fmt, arg...) \
> - printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
> - drm_mem_stats[area].name , ##arg)
> +#define DRM_ERROR(fmt, ...) \
> + drm_err(__func__, fmt, ##__VA_ARGS__)
>
> -#define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
> +#define DRM_INFO(fmt, ...) \
> + printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
>
> /**
> * Debug output.

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/

iEYEARECAAYFAk2swbEACgkQX1gOwKyEAw+w/ACfd2QMJWOQU5f9sgavPXkfPPfW
GygAn2D8bjKkIV8wOXYC1fOI9w4DPWHj
=q3FM
-----END PGP SIGNATURE-----

2011-04-18 23:02:30

by Ian Romanick

[permalink] [raw]
Subject: Re: [PATCH 2/2] drm: Verify debug message arguments

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 04/17/2011 08:35 PM, Joe Perches wrote:
> Add __attribute__((format (printf, 4, 5))) to drm_ut_debug_printk
> and fix fallout.
>
> Signed-off-by: Joe Perches <[email protected]>

Aside from the comment below about intel_bios.c,

Reviewed-by: Ian Romanick <[email protected]>

especially the changes in intel_display.c. yikes...

> ---
> drivers/gpu/drm/drm_irq.c | 9 +++++----
> drivers/gpu/drm/i915/intel_bios.c | 6 +++---
> drivers/gpu/drm/i915/intel_display.c | 8 ++++----
> drivers/gpu/drm/radeon/radeon_display.c | 5 +++--
> include/drm/drmP.h | 3 ++-
> 5 files changed, 17 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
> index 741457b..62ced75 100644
> --- a/drivers/gpu/drm/drm_irq.c
> +++ b/drivers/gpu/drm/drm_irq.c
> @@ -684,10 +684,11 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
> */
> *vblank_time = ns_to_timeval(timeval_to_ns(&raw_time) - delta_ns);
>
> - DRM_DEBUG("crtc %d : v %d p(%d,%d)@ %d.%d -> %d.%d [e %d us, %d rep]\n",
> - crtc, (int) vbl_status, hpos, vpos, raw_time.tv_sec,
> - raw_time.tv_usec, vblank_time->tv_sec, vblank_time->tv_usec,
> - (int) duration_ns/1000, i);
> + DRM_DEBUG("crtc %d : v %d p(%d,%d)@ %ld.%ld -> %ld.%ld [e %d us, %d rep]\n",
> + crtc, (int)vbl_status, hpos, vpos,
> + (long)raw_time.tv_sec, (long)raw_time.tv_usec,
> + (long)vblank_time->tv_sec, (long)vblank_time->tv_usec,
> + (int)duration_ns/1000, i);
>
> vbl_status = DRM_VBLANKTIME_SCANOUTPOS_METHOD;
> if (invbl)
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index fb5b4d4..927442a 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -214,9 +214,9 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
> i915_lvds_downclock) {
> dev_priv->lvds_downclock_avail = 1;
> dev_priv->lvds_downclock = temp_downclock;
> - DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
> - "Normal Clock %dKHz, downclock %dKHz\n",
> - temp_downclock, panel_fixed_mode->clock);
> + DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
> + "Normal Clock %dKHz, downclock %dKHz\n",
> + temp_downclock, panel_fixed_mode->clock);
> }
> return;
> }

Does this hunk only change white space, or am I missing something?

> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 432fc04..63bc2af 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -3497,11 +3497,11 @@ static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
> 1000;
> entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
>
> - DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required);
> + DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
>
> wm_size = fifo_size - (entries_required + wm->guard_size);
>
> - DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
> + DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
>
> /* Don't promote wm_size to unsigned... */
> if (wm_size > (long)wm->max_wm)
> @@ -3820,13 +3820,13 @@ static bool g4x_check_srwm(struct drm_device *dev,
> display_wm, cursor_wm);
>
> if (display_wm > display->max_wm) {
> - DRM_DEBUG_KMS("display watermark is too large(%d), disabling\n",
> + DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
> display_wm, display->max_wm);
> return false;
> }
>
> if (cursor_wm > cursor->max_wm) {
> - DRM_DEBUG_KMS("cursor watermark is too large(%d), disabling\n",
> + DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
> cursor_wm, cursor->max_wm);
> return false;
> }
> diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
> index bdbab5c..0671934 100644
> --- a/drivers/gpu/drm/radeon/radeon_display.c
> +++ b/drivers/gpu/drm/radeon/radeon_display.c
> @@ -1087,8 +1087,9 @@ void radeon_compute_pll_legacy(struct radeon_pll *pll,
> *frac_fb_div_p = best_frac_feedback_div;
> *ref_div_p = best_ref_div;
> *post_div_p = best_post_div;
> - DRM_DEBUG_KMS("%d %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
> - freq, best_freq / 1000, best_feedback_div, best_frac_feedback_div,
> + DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
> + (long long)freq,
> + best_freq / 1000, best_feedback_div, best_frac_feedback_div,
> best_ref_div, best_post_div);
>
> }
> diff --git a/include/drm/drmP.h b/include/drm/drmP.h
> index 22db51d..4ab866e 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -122,7 +122,8 @@ struct drm_device;
> * using the DRM_DEBUG_KMS and DRM_DEBUG.
> */
>
> -extern void drm_ut_debug_printk(unsigned int request_level,
> +extern __attribute__((format (printf, 4, 5)))
> +void drm_ut_debug_printk(unsigned int request_level,
> const char *prefix,
> const char *function_name,
> const char *format, ...);
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/

iEYEARECAAYFAk2swrgACgkQX1gOwKyEAw+b8wCfdNqYUGinwLaXk7PeNNu8ExXe
39EAoIWQPkZ3z8Au22tTM3cXOQlIuAH4
=4RWh
-----END PGP SIGNATURE-----

2011-04-18 23:05:43

by Joe Perches

[permalink] [raw]
Subject: Re: [PATCH 1/2] drm: Create and use drm_err

On Mon, 2011-04-18 at 15:56 -0700, Ian Romanick wrote:
> I believe that DRM_NAME is a define, and drm_stub.c is in common code.
> As a result, won't this change cause something different to get logged?

Nope. DRM_NAME is #defined only once.

include/drm/drm.h:#define DRM_NAME "drm"

The only real reason to do this is the "*ERROR*"
used in:

> > -#define DRM_ERROR(fmt, arg...) \
> > - printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)

It'd be more or less similar to use:

#define DRM_ERROR(fmt, ...) \
pr_err("%s: " fmt, __func__, ##__VA_ARGS__)

or just convert DRM_ERROR to pr_err and DRM_INFO to pr_info.

2011-04-18 23:09:14

by Joe Perches

[permalink] [raw]
Subject: Re: [PATCH 2/2] drm: Verify debug message arguments

On Mon, 2011-04-18 at 16:01 -0700, Ian Romanick wrote:
> > @@ -214,9 +214,9 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
> > i915_lvds_downclock) {
> > dev_priv->lvds_downclock_avail = 1;
> > dev_priv->lvds_downclock = temp_downclock;
> > - DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
> > - "Normal Clock %dKHz, downclock %dKHz\n",
> > - temp_downclock, panel_fixed_mode->clock);
> > + DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
> > + "Normal Clock %dKHz, downclock %dKHz\n",
> > + temp_downclock, panel_fixed_mode->clock);
> > }
> > return;
> > }
> Does this hunk only change white space, or am I missing something?

No, you're right. It's just whitespace.
I prefer arguments aligned to open paren.

2011-04-19 16:28:05

by Marcin Slusarz

[permalink] [raw]
Subject: Re: [PATCH 2/2] drm: Verify debug message arguments

On Mon, Apr 18, 2011 at 04:09:11PM -0700, Joe Perches wrote:
> On Mon, 2011-04-18 at 16:01 -0700, Ian Romanick wrote:
> > > @@ -214,9 +214,9 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
> > > i915_lvds_downclock) {
> > > dev_priv->lvds_downclock_avail = 1;
> > > dev_priv->lvds_downclock = temp_downclock;
> > > - DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
> > > - "Normal Clock %dKHz, downclock %dKHz\n",
> > > - temp_downclock, panel_fixed_mode->clock);
> > > + DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
> > > + "Normal Clock %dKHz, downclock %dKHz\n",
> > > + temp_downclock, panel_fixed_mode->clock);
> > > }
> > > return;
> > > }
> > Does this hunk only change white space, or am I missing something?
>
> No, you're right. It's just whitespace.
> I prefer arguments aligned to open paren.

It's not just whitespace. Look at the end of first line.

Marcin

2011-04-19 16:31:45

by Joe Perches

[permalink] [raw]
Subject: Re: [PATCH 2/2] drm: Verify debug message arguments

On Tue, 2011-04-19 at 18:26 +0200, Marcin Slusarz wrote:
> On Mon, Apr 18, 2011 at 04:09:11PM -0700, Joe Perches wrote:
> > On Mon, 2011-04-18 at 16:01 -0700, Ian Romanick wrote:
> > > > - DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
> > > > - "Normal Clock %dKHz, downclock %dKHz\n",
> > > > - temp_downclock, panel_fixed_mode->clock);
> > > > + DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
> > > > + "Normal Clock %dKHz, downclock %dKHz\n",
> > > > + temp_downclock, panel_fixed_mode->clock);
> > > Does this hunk only change white space, or am I missing something?
> > No, you're right. It's just whitespace.
> > I prefer arguments aligned to open paren.
> It's not just whitespace. Look at the end of first line.

Heh. Thanks Marcin.

Teach me to just at the code in the patch.

It's a format error as the first quoted string has
a comma at the end so the arguments after the comma
were ignored.