[PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-17 Thread Jordan Crouse 
The i915 DRM driver very cleverly used ascii85 encoding for their
GPU state file. Move the encode functions to a general header file to
support other drivers that might be interested in the same
functionality.

v3: Fix error_puts -> err_puts pointed out by the 01.org bot
v2: Update API to be cleaner for the caller as suggested by Chris Wilson

Signed-off-by: Jordan Crouse 
---
 drivers/gpu/drm/i915/i915_gpu_error.c | 35 +++-
 include/linux/ascii85.h   | 39 +++
 2 files changed, 43 insertions(+), 31 deletions(-)
 create mode 100644 include/linux/ascii85.h

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c 
b/drivers/gpu/drm/i915/i915_gpu_error.c
index 67c902412193..d14b8041d5c7 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -31,7 +31,7 @@
 #include 
 #include 
 #include 
-
+#include 
 #include "i915_drv.h"
 
 static inline const struct intel_engine_cs *
@@ -518,35 +518,12 @@ void i915_error_printf(struct drm_i915_error_state_buf 
*e, const char *f, ...)
va_end(args);
 }
 
-static int
-ascii85_encode_len(int len)
-{
-   return DIV_ROUND_UP(len, 4);
-}
-
-static bool
-ascii85_encode(u32 in, char *out)
-{
-   int i;
-
-   if (in == 0)
-   return false;
-
-   out[5] = '\0';
-   for (i = 5; i--; ) {
-   out[i] = '!' + in % 85;
-   in /= 85;
-   }
-
-   return true;
-}
-
 static void print_error_obj(struct drm_i915_error_state_buf *m,
struct intel_engine_cs *engine,
const char *name,
struct drm_i915_error_object *obj)
 {
-   char out[6];
+   char out[ASCII85_BUFSZ];
int page;
 
if (!obj)
@@ -568,12 +545,8 @@ static void print_error_obj(struct 
drm_i915_error_state_buf *m,
len -= obj->unused;
len = ascii85_encode_len(len);
 
-   for (i = 0; i < len; i++) {
-   if (ascii85_encode(obj->pages[page][i], out))
-   err_puts(m, out);
-   else
-   err_puts(m, "z");
-   }
+   for (i = 0; i < len; i++)
+   err_puts(m, ascii85_encode(obj->pages[page][i], out));
}
err_puts(m, "\n");
 }
diff --git a/include/linux/ascii85.h b/include/linux/ascii85.h
new file mode 100644
index ..322bbed731ae
--- /dev/null
+++ b/include/linux/ascii85.h
@@ -0,0 +1,39 @@
+
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (c) 2008 Intel Corporation
+ * Copyright (c) The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _ASCII85_H_
+#define _ASCII85_H_
+
+#include 
+
+#define ASCII85_BUFSZ 6
+
+static inline long
+ascii85_encode_len(long len)
+{
+   return DIV_ROUND_UP(len, 4);
+}
+
+static inline char *
+ascii85_encode(u32 in, char *out)
+{
+   int i;
+
+   if (in == 0)
+   return "z";
+
+   out[5] = '\0';
+   for (i = 5; i--; ) {
+   out[i] = '!' + in % 85;
+   in /= 85;
+   }
+
+   return out;
+}
+
+#endif
-- 
2.17.0

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Re: [Freedreno] [Intel-gfx] [PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-17 Thread Jordan Crouse 
On Mon, Apr 16, 2018 at 10:52:59AM -0700, Eric Anholt wrote:
> Chris Wilson  writes:
> 
> > Quoting Jordan Crouse (2018-04-05 23:06:53)
> >> On Thu, Apr 05, 2018 at 04:00:47PM -0600, Jordan Crouse wrote:
> >> > The i915 DRM driver very cleverly used ascii85 encoding for their
> >> > GPU state file. Move the encode functions to a general header file to
> >> > support other drivers that might be interested in the same
> >> > functionality.
> >> 
> >> In a previous version of this patch, Chris asked what tree I wanted this 
> >> applied
> >> to, and the answer is: I'm not sure?  I'm hoping that Rob will be cool with
> >> picking the rest up for msm-next for 4.18 but I'm okay with putting this
> >> particular patch wherever it is easiest for the maintainers.
> >
> > We are a bit late to sneak it into the 4.17 drm base via i915. I don't
> > anticipate any problems (for i915) with this patch going in through
> > msm-next, so happy to have it land there and percolate back to i915 3
> > months later.
> 
> I'd love to have it in drm-misc-next, so I can build a similar hang dump
> interface for vc5.  But most importantly, I'd like to have it somewhere
> soon.

I'll fix the bot error and push it up again today.

Jordan

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Re: [Intel-gfx] [Freedreno] [PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-17 Thread Daniel Vetter 
On Mon, Apr 16, 2018 at 10:52:59AM -0700, Eric Anholt wrote:
> Chris Wilson  writes:
> 
> > Quoting Jordan Crouse (2018-04-05 23:06:53)
> >> On Thu, Apr 05, 2018 at 04:00:47PM -0600, Jordan Crouse wrote:
> >> > The i915 DRM driver very cleverly used ascii85 encoding for their
> >> > GPU state file. Move the encode functions to a general header file to
> >> > support other drivers that might be interested in the same
> >> > functionality.
> >> 
> >> In a previous version of this patch, Chris asked what tree I wanted this 
> >> applied
> >> to, and the answer is: I'm not sure?  I'm hoping that Rob will be cool with
> >> picking the rest up for msm-next for 4.18 but I'm okay with putting this
> >> particular patch wherever it is easiest for the maintainers.
> >
> > We are a bit late to sneak it into the 4.17 drm base via i915. I don't
> > anticipate any problems (for i915) with this patch going in through
> > msm-next, so happy to have it land there and percolate back to i915 3
> > months later.
> 
> I'd love to have it in drm-misc-next, so I can build a similar hang dump
> interface for vc5.  But most importantly, I'd like to have it somewhere
> soon.

Maarten will likely send the first pull for drm-misc-next at the end of
this week. So if you just push it there today, there's no hold-up for msm
(or anyone else) really.
-Daniel
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http://blog.ffwll.ch
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Re: [Intel-gfx] [Freedreno] [PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-16 Thread Eric Anholt 
Chris Wilson  writes:

> Quoting Jordan Crouse (2018-04-05 23:06:53)
>> On Thu, Apr 05, 2018 at 04:00:47PM -0600, Jordan Crouse wrote:
>> > The i915 DRM driver very cleverly used ascii85 encoding for their
>> > GPU state file. Move the encode functions to a general header file to
>> > support other drivers that might be interested in the same
>> > functionality.
>> 
>> In a previous version of this patch, Chris asked what tree I wanted this 
>> applied
>> to, and the answer is: I'm not sure?  I'm hoping that Rob will be cool with
>> picking the rest up for msm-next for 4.18 but I'm okay with putting this
>> particular patch wherever it is easiest for the maintainers.
>
> We are a bit late to sneak it into the 4.17 drm base via i915. I don't
> anticipate any problems (for i915) with this patch going in through
> msm-next, so happy to have it land there and percolate back to i915 3
> months later.

I'd love to have it in drm-misc-next, so I can build a similar hang dump
interface for vc5.  But most importantly, I'd like to have it somewhere
soon.


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Re: [PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-09 Thread kbuild test robot 
Hi Jordan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on robclark/msm-next]
[also build test ERROR on v4.16 next-20180406]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Jordan-Crouse/drm-msm-GPU-crash-state/20180406-170513
base:   git://people.freedesktop.org/~robclark/linux msm-next
config: x86_64-rhel (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/gpu//drm/i915/i915_gpu_error.c: In function 'print_error_obj':
>> drivers/gpu//drm/i915/i915_gpu_error.c:549:4: error: implicit declaration of 
>> function 'error_puts'; did you mean 'err_puts'? 
>> [-Werror=implicit-function-declaration]
   error_puts(m, ascii85_encode(obj->pages[page][i], out));
   ^~
   err_puts
   cc1: some warnings being treated as errors

vim +549 drivers/gpu//drm/i915/i915_gpu_error.c

   520  
   521  static void print_error_obj(struct drm_i915_error_state_buf *m,
   522  struct intel_engine_cs *engine,
   523  const char *name,
   524  struct drm_i915_error_object *obj)
   525  {
   526  char out[ASCII85_BUFSZ];
   527  int page;
   528  
   529  if (!obj)
   530  return;
   531  
   532  if (name) {
   533  err_printf(m, "%s --- %s = 0x%08x %08x\n",
   534 engine ? engine->name : "global", name,
   535 upper_32_bits(obj->gtt_offset),
   536 lower_32_bits(obj->gtt_offset));
   537  }
   538  
   539  err_compression_marker(m);
   540  for (page = 0; page < obj->page_count; page++) {
   541  int i, len;
   542  
   543  len = PAGE_SIZE;
   544  if (page == obj->page_count - 1)
   545  len -= obj->unused;
   546  len = ascii85_encode_len(len);
   547  
   548  for (i = 0; i < len; i++)
 > 549  error_puts(m, 
 > ascii85_encode(obj->pages[page][i], out));
   550  }
   551  err_puts(m, "\n");
   552  }
   553  

---
0-DAY kernel test infrastructureOpen Source Technology Center
https://lists.01.org/pipermail/kbuild-all   Intel Corporation


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Re: [Intel-gfx] [Freedreno] [PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-06 Thread Chris Wilson 
Quoting Jordan Crouse (2018-04-05 23:06:53)
> On Thu, Apr 05, 2018 at 04:00:47PM -0600, Jordan Crouse wrote:
> > The i915 DRM driver very cleverly used ascii85 encoding for their
> > GPU state file. Move the encode functions to a general header file to
> > support other drivers that might be interested in the same
> > functionality.
> 
> In a previous version of this patch, Chris asked what tree I wanted this 
> applied
> to, and the answer is: I'm not sure?  I'm hoping that Rob will be cool with
> picking the rest up for msm-next for 4.18 but I'm okay with putting this
> particular patch wherever it is easiest for the maintainers.

We are a bit late to sneak it into the 4.17 drm base via i915. I don't
anticipate any problems (for i915) with this patch going in through
msm-next, so happy to have it land there and percolate back to i915 3
months later.
-Chris
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Re: [Freedreno] [PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-05 Thread Jordan Crouse 
On Thu, Apr 05, 2018 at 04:00:47PM -0600, Jordan Crouse wrote:
> The i915 DRM driver very cleverly used ascii85 encoding for their
> GPU state file. Move the encode functions to a general header file to
> support other drivers that might be interested in the same
> functionality.

In a previous version of this patch, Chris asked what tree I wanted this applied
to, and the answer is: I'm not sure?  I'm hoping that Rob will be cool with
picking the rest up for msm-next for 4.18 but I'm okay with putting this
particular patch wherever it is easiest for the maintainers.

Jordan

> Reviewed-by: Chris Wilson 
> Signed-off-by: Jordan Crouse 
>  drivers/gpu/drm/i915/i915_gpu_error.c | 35 ---
>  include/linux/ascii85.h   | 39 
> +++
>  2 files changed, 43 insertions(+), 31 deletions(-)
>  create mode 100644 include/linux/ascii85.h
> 
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c 
> b/drivers/gpu/drm/i915/i915_gpu_error.c
> index 67c902412193..969d967e58c7 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -31,7 +31,7 @@
>  #include 
>  #include 
>  #include 
> -
> +#include 
>  #include "i915_drv.h"
>  
>  static inline const struct intel_engine_cs *
> @@ -518,35 +518,12 @@ void i915_error_printf(struct drm_i915_error_state_buf 
> *e, const char *f, ...)
>   va_end(args);
>  }
>  
> -static int
> -ascii85_encode_len(int len)
> -{
> - return DIV_ROUND_UP(len, 4);
> -}
> -
> -static bool
> -ascii85_encode(u32 in, char *out)
> -{
> - int i;
> -
> - if (in == 0)
> - return false;
> -
> - out[5] = '\0';
> - for (i = 5; i--; ) {
> - out[i] = '!' + in % 85;
> - in /= 85;
> - }
> -
> - return true;
> -}
> -
>  static void print_error_obj(struct drm_i915_error_state_buf *m,
>   struct intel_engine_cs *engine,
>   const char *name,
>   struct drm_i915_error_object *obj)
>  {
> - char out[6];
> + char out[ASCII85_BUFSZ];
>   int page;
>  
>   if (!obj)
> @@ -568,12 +545,8 @@ static void print_error_obj(struct 
> drm_i915_error_state_buf *m,
>   len -= obj->unused;
>   len = ascii85_encode_len(len);
>  
> - for (i = 0; i < len; i++) {
> - if (ascii85_encode(obj->pages[page][i], out))
> - err_puts(m, out);
> - else
> - err_puts(m, "z");
> - }
> + for (i = 0; i < len; i++)
> + error_puts(m, ascii85_encode(obj->pages[page][i], out));
>   }
>   err_puts(m, "\n");
>  }
> diff --git a/include/linux/ascii85.h b/include/linux/ascii85.h
> new file mode 100644
> index ..322bbed731ae
> --- /dev/null
> +++ b/include/linux/ascii85.h
> @@ -0,0 +1,39 @@
> +
> +/*
> + * SPDX-License-Identifier: GPL-2.0
> + *
> + * Copyright (c) 2008 Intel Corporation
> + * Copyright (c) The Linux Foundation. All rights reserved.
> + */
> +
> +#ifndef _ASCII85_H_
> +#define _ASCII85_H_
> +
> +#include 
> +
> +#define ASCII85_BUFSZ 6
> +
> +static inline long
> +ascii85_encode_len(long len)
> +{
> + return DIV_ROUND_UP(len, 4);
> +}
> +
> +static inline char *
> +ascii85_encode(u32 in, char *out)
> +{
> + int i;
> +
> + if (in == 0)
> + return "z";
> +
> + out[5] = '\0';
> + for (i = 5; i--; ) {
> + out[i] = '!' + in % 85;
> + in /= 85;
> + }
> +
> + return out;
> +}
> +
> +#endif
> -- 
> 2.16.1
> 
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[PATCH 01/10] include: Move ascii85 functions from i915 to linux/ascii85.h

2018-04-05 Thread Jordan Crouse 
The i915 DRM driver very cleverly used ascii85 encoding for their
GPU state file. Move the encode functions to a general header file to
support other drivers that might be interested in the same
functionality.

Reviewed-by: Chris Wilson 
Signed-off-by: Jordan Crouse 
 drivers/gpu/drm/i915/i915_gpu_error.c | 35 ---
 include/linux/ascii85.h   | 39 +++
 2 files changed, 43 insertions(+), 31 deletions(-)
 create mode 100644 include/linux/ascii85.h

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c 
b/drivers/gpu/drm/i915/i915_gpu_error.c
index 67c902412193..969d967e58c7 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -31,7 +31,7 @@
 #include 
 #include 
 #include 
-
+#include 
 #include "i915_drv.h"
 
 static inline const struct intel_engine_cs *
@@ -518,35 +518,12 @@ void i915_error_printf(struct drm_i915_error_state_buf 
*e, const char *f, ...)
va_end(args);
 }
 
-static int
-ascii85_encode_len(int len)
-{
-   return DIV_ROUND_UP(len, 4);
-}
-
-static bool
-ascii85_encode(u32 in, char *out)
-{
-   int i;
-
-   if (in == 0)
-   return false;
-
-   out[5] = '\0';
-   for (i = 5; i--; ) {
-   out[i] = '!' + in % 85;
-   in /= 85;
-   }
-
-   return true;
-}
-
 static void print_error_obj(struct drm_i915_error_state_buf *m,
struct intel_engine_cs *engine,
const char *name,
struct drm_i915_error_object *obj)
 {
-   char out[6];
+   char out[ASCII85_BUFSZ];
int page;
 
if (!obj)
@@ -568,12 +545,8 @@ static void print_error_obj(struct 
drm_i915_error_state_buf *m,
len -= obj->unused;
len = ascii85_encode_len(len);
 
-   for (i = 0; i < len; i++) {
-   if (ascii85_encode(obj->pages[page][i], out))
-   err_puts(m, out);
-   else
-   err_puts(m, "z");
-   }
+   for (i = 0; i < len; i++)
+   error_puts(m, ascii85_encode(obj->pages[page][i], out));
}
err_puts(m, "\n");
 }
diff --git a/include/linux/ascii85.h b/include/linux/ascii85.h
new file mode 100644
index ..322bbed731ae
--- /dev/null
+++ b/include/linux/ascii85.h
@@ -0,0 +1,39 @@
+
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (c) 2008 Intel Corporation
+ * Copyright (c) The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _ASCII85_H_
+#define _ASCII85_H_
+
+#include 
+
+#define ASCII85_BUFSZ 6
+
+static inline long
+ascii85_encode_len(long len)
+{
+   return DIV_ROUND_UP(len, 4);
+}
+
+static inline char *
+ascii85_encode(u32 in, char *out)
+{
+   int i;
+
+   if (in == 0)
+   return "z";
+
+   out[5] = '\0';
+   for (i = 5; i--; ) {
+   out[i] = '!' + in % 85;
+   in /= 85;
+   }
+
+   return out;
+}
+
+#endif
-- 
2.16.1

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