* [PATCH 01/13] include: Move ascii85 functions from i915 to linux/ascii85.h
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
@ 2018-07-12 18:59 ` Jordan Crouse
[not found] ` <20180712185930.2492-2-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 02/13] drm: drm_printer: Add printer for devcoredump Jordan Crouse
` (11 subsequent siblings)
12 siblings, 1 reply; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
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 <jcrouse@codeaurora.org>
---
drivers/gpu/drm/i915/i915_gpu_error.c | 34 +++--------------------
include/linux/ascii85.h | 39 +++++++++++++++++++++++++++
2 files changed, 43 insertions(+), 30 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 df234dc23274..284e899ca8ff 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -31,6 +31,7 @@
#include <linux/stop_machine.h>
#include <linux/zlib.h>
#include <drm/drm_print.h>
+#include <linux/ascii85.h>
#include "i915_gpu_error.h"
#include "i915_drv.h"
@@ -522,35 +523,12 @@ 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)
@@ -572,12 +550,8 @@ 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 000000000000..11b9146a3bc4
--- /dev/null
+++ b/include/linux/ascii85.h
@@ -0,0 +1,39 @@
+
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (c) 2008 Intel Corporation
+ * Copyright (c) 2018 The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _ASCII85_H_
+#define _ASCII85_H_
+
+#include <linux/kernel.h>
+
+#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
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 02/13] drm: drm_printer: Add printer for devcoredump
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 01/13] include: Move ascii85 functions from i915 to linux/ascii85.h Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
[not found] ` <20180712185930.2492-3-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 03/13] drm: Add drm_puts() to complement drm_printf() Jordan Crouse
` (10 subsequent siblings)
12 siblings, 1 reply; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Add a drm printer suitable for use with the read callback for
devcoredump or other suitable buffer based output format that
isn't otherwise covered by seq_file.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/drm_print.c | 74 +++++++++++++++++++++++++++++++++++++
include/drm/drm_print.h | 27 ++++++++++++++
2 files changed, 101 insertions(+)
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
index b25f98f33f6c..03d1f98e5ac7 100644
--- a/drivers/gpu/drm/drm_print.c
+++ b/drivers/gpu/drm/drm_print.c
@@ -30,6 +30,80 @@
#include <drm/drmP.h>
#include <drm/drm_print.h>
+void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf)
+{
+ struct drm_print_iterator *iterator = p->arg;
+ ssize_t len;
+
+ if (!iterator->remain)
+ return;
+
+ /* Figure out how big the string will be */
+ len = snprintf(NULL, 0, "%pV", vaf);
+
+ if (iterator->offset < iterator->start) {
+ char *buf;
+ ssize_t copy;
+
+ if (iterator->offset + len <= iterator->start) {
+ iterator->offset += len;
+ return;
+ }
+
+ /* Print the string into a temporary buffer */
+ buf = kmalloc(len + 1,
+ GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY);
+ if (!buf)
+ return;
+
+ snprintf(buf, len + 1, "%pV", vaf);
+
+ copy = len - (iterator->start - iterator->offset);
+
+ if (copy > iterator->remain)
+ copy = iterator->remain;
+
+ /* Copy out the bit of the string that we need */
+ memcpy(iterator->data,
+ buf + (iterator->start - iterator->offset), copy);
+
+ iterator->offset = iterator->start + copy;
+ iterator->remain -= copy;
+
+ kfree(buf);
+ } else {
+ char *buf;
+ ssize_t pos = iterator->offset - iterator->start;
+
+ if (len < iterator->remain) {
+ snprintf(((char *) iterator->data) + pos,
+ iterator->remain, "%pV", vaf);
+
+ iterator->offset += len;
+ iterator->remain -= len;
+
+ return;
+ }
+
+ /* Print the string into a temporary buffer */
+ buf = kmalloc(len + 1,
+ GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY);
+ if (!buf)
+ return;
+
+ snprintf(buf, len + 1, "%pV", vaf);
+
+ /* Copy out the remaining bits */
+ memcpy(iterator->data + pos, buf, iterator->remain);
+
+ iterator->offset += iterator->remain;
+ iterator->remain = 0;
+
+ kfree(buf);
+ }
+}
+EXPORT_SYMBOL(__drm_printfn_coredump);
+
void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf)
{
seq_printf(p->arg, "%pV", vaf);
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index e1a46e9991cc..0ea440fb5ec3 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -73,6 +73,7 @@ struct drm_printer {
const char *prefix;
};
+void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf);
void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf);
@@ -104,6 +105,32 @@ drm_vprintf(struct drm_printer *p, const char *fmt, va_list *va)
#define drm_printf_indent(printer, indent, fmt, ...) \
drm_printf((printer), "%.*s" fmt, (indent), "\t\t\t\t\tX", ##__VA_ARGS__)
+struct drm_print_iterator {
+ void *data;
+
+ ssize_t start;
+ ssize_t offset;
+ ssize_t remain;
+};
+
+/**
+ * drm_coredump_printer - construct a &drm_printer that can output to a buffer
+ * from the read function for devcoredump
+ * @iter: A pointer to a struct drm_print_iterator for the read instance
+ *
+ * RETURNS:
+ * The &drm_printer object
+ */
+static inline struct drm_printer
+drm_coredump_printer(struct drm_print_iterator *iter)
+{
+ struct drm_printer p = {
+ .printfn = __drm_printfn_coredump,
+ .arg = iter,
+ };
+ return p;
+}
+
/**
* drm_seq_file_printer - construct a &drm_printer that outputs to &seq_file
* @f: the &struct seq_file to output to
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 03/13] drm: Add drm_puts() to complement drm_printf()
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 01/13] include: Move ascii85 functions from i915 to linux/ascii85.h Jordan Crouse
2018-07-12 18:59 ` [PATCH 02/13] drm: drm_printer: Add printer for devcoredump Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
[not found] ` <20180712185930.2492-4-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 04/13] drm: Add a -puts() function for the seq_file printer Jordan Crouse
` (9 subsequent siblings)
12 siblings, 1 reply; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Add drm_puts() for a much faster path to print constant strings
into a drm_printer object with memcpy and friends. This can
shave seconds off of really large outputs such as GPU dumps.
If the drm_printer object supports a custom puts function then
use that otherwise fall back to the slower legacy printf call.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/drm_print.c | 9 +++++++++
include/drm/drm_print.h | 2 ++
2 files changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
index 03d1f98e5ac7..8fd489248a50 100644
--- a/drivers/gpu/drm/drm_print.c
+++ b/drivers/gpu/drm/drm_print.c
@@ -122,6 +122,15 @@ void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf)
}
EXPORT_SYMBOL(__drm_printfn_debug);
+void drm_puts(struct drm_printer *p, const char *str)
+{
+ if (p->puts)
+ p->puts(p, str);
+ else
+ drm_printf(p, "%s", str);
+}
+EXPORT_SYMBOL(drm_puts);
+
/**
* drm_printf - print to a &drm_printer stream
* @p: the &drm_printer
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index 0ea440fb5ec3..b16f4ecaa984 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -69,6 +69,7 @@
struct drm_printer {
/* private: */
void (*printfn)(struct drm_printer *p, struct va_format *vaf);
+ void (*puts)(struct drm_printer *p, const char *str);
void *arg;
const char *prefix;
};
@@ -80,6 +81,7 @@ void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf);
__printf(2, 3)
void drm_printf(struct drm_printer *p, const char *f, ...);
+void drm_puts(struct drm_printer *p, const char *str);
__printf(2, 0)
/**
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 04/13] drm: Add a -puts() function for the seq_file printer
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (2 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 03/13] drm: Add drm_puts() to complement drm_printf() Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
[not found] ` <20180712185930.2492-5-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 05/13] drm: Add put callback for the coredump printer Jordan Crouse
` (8 subsequent siblings)
12 siblings, 1 reply; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Add a puts() function to use seq_puts() to help speed up
up print time for constant strings.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/drm_print.c | 6 ++++++
include/drm/drm_print.h | 2 ++
2 files changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
index 8fd489248a50..bef8f0ec5d73 100644
--- a/drivers/gpu/drm/drm_print.c
+++ b/drivers/gpu/drm/drm_print.c
@@ -104,6 +104,12 @@ void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf)
}
EXPORT_SYMBOL(__drm_printfn_coredump);
+void __drm_puts_seq_file(struct drm_printer *p, const char *str)
+{
+ seq_puts(p->arg, str);
+}
+EXPORT_SYMBOL(__drm_puts_seq_file);
+
void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf)
{
seq_printf(p->arg, "%pV", vaf);
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index b16f4ecaa984..3bc6ba4b7b2c 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -76,6 +76,7 @@ struct drm_printer {
void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf);
void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
+void __drm_puts_seq_file(struct drm_printer *p, const char *str);
void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf);
@@ -144,6 +145,7 @@ static inline struct drm_printer drm_seq_file_printer(struct seq_file *f)
{
struct drm_printer p = {
.printfn = __drm_printfn_seq_file,
+ .puts = __drm_puts_seq_file,
.arg = f,
};
return p;
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 05/13] drm: Add put callback for the coredump printer
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (3 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 04/13] drm: Add a -puts() function for the seq_file printer Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
[not found] ` <20180712185930.2492-6-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-13 13:45 ` [Freedreno] " Rob Clark
2018-07-12 18:59 ` [PATCH 06/13] drm/msm/gpu: Capture the state of the GPU Jordan Crouse
` (7 subsequent siblings)
12 siblings, 2 replies; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Add a put function for the coredump printer to bypass printf()
for constant strings for a speed boost.
v2: Add EXPORT_SYMBOL for _drm_puts_coredump
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/drm_print.c | 43 +++++++++++++++++++++++++++++++++++++
include/drm/drm_print.h | 2 ++
2 files changed, 45 insertions(+)
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
index bef8f0ec5d73..ff20f4a764c8 100644
--- a/drivers/gpu/drm/drm_print.c
+++ b/drivers/gpu/drm/drm_print.c
@@ -30,6 +30,49 @@
#include <drm/drmP.h>
#include <drm/drm_print.h>
+void __drm_puts_coredump(struct drm_printer *p, const char *str)
+{
+ struct drm_print_iterator *iterator = p->arg;
+
+ ssize_t len;
+
+ if (!iterator->remain)
+ return;
+
+ if (iterator->offset < iterator->start) {
+ ssize_t copy;
+
+ len = strlen(str);
+
+ if (iterator->offset + len <= iterator->start) {
+ iterator->offset += len;
+ return;
+ }
+
+ copy = len - (iterator->start - iterator->offset);
+
+ if (copy > iterator->remain)
+ copy = iterator->remain;
+
+ /* Copy out the bit of the string that we need */
+ memcpy(iterator->data,
+ str + (iterator->start - iterator->offset), copy);
+
+ iterator->offset = iterator->start + copy;
+ iterator->remain -= copy;
+ } else {
+ ssize_t pos = iterator->offset - iterator->start;
+
+ len = min_t(ssize_t, strlen(str), iterator->remain);
+
+ memcpy(iterator->data + pos, str, len);
+
+ iterator->offset += len;
+ iterator->remain -= len;
+ }
+}
+EXPORT_SYMBOL(__drm_puts_coredump);
+
void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf)
{
struct drm_print_iterator *iterator = p->arg;
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index 3bc6ba4b7b2c..2a903ee7b428 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -75,6 +75,7 @@ struct drm_printer {
};
void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf);
+void __drm_puts_coredump(struct drm_printer *p, const char *str);
void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
void __drm_puts_seq_file(struct drm_printer *p, const char *str);
void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
@@ -129,6 +130,7 @@ drm_coredump_printer(struct drm_print_iterator *iter)
{
struct drm_printer p = {
.printfn = __drm_printfn_coredump,
+ .puts = __drm_puts_coredump,
.arg = iter,
};
return p;
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
[parent not found: <20180712185930.2492-6-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>]
* Re: [PATCH 05/13] drm: Add put callback for the coredump printer
[not found] ` <20180712185930.2492-6-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
@ 2018-07-12 19:43 ` Chris Wilson
0 siblings, 0 replies; 32+ messages in thread
From: Chris Wilson @ 2018-07-12 19:43 UTC (permalink / raw)
To: Jordan Crouse, freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Quoting Jordan Crouse (2018-07-12 19:59:22)
> Add a put function for the coredump printer to bypass printf()
> for constant strings for a speed boost.
>
> v2: Add EXPORT_SYMBOL for _drm_puts_coredump
> Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
> ---
> drivers/gpu/drm/drm_print.c | 43 +++++++++++++++++++++++++++++++++++++
> include/drm/drm_print.h | 2 ++
> 2 files changed, 45 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
> index bef8f0ec5d73..ff20f4a764c8 100644
> --- a/drivers/gpu/drm/drm_print.c
> +++ b/drivers/gpu/drm/drm_print.c
> @@ -30,6 +30,49 @@
> #include <drm/drmP.h>
> #include <drm/drm_print.h>
>
> +void __drm_puts_coredump(struct drm_printer *p, const char *str)
> +{
> + struct drm_print_iterator *iterator = p->arg;
> +
> + ssize_t len;
> +
> + if (!iterator->remain)
> + return;
> +
> + if (iterator->offset < iterator->start) {
> + ssize_t copy;
> +
> + len = strlen(str);
> +
printfn_coredump looks like it would then wrap puts_coredump?
-Chris
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply [flat|nested] 32+ messages in thread
* Re: [Freedreno] [PATCH 05/13] drm: Add put callback for the coredump printer
2018-07-12 18:59 ` [PATCH 05/13] drm: Add put callback for the coredump printer Jordan Crouse
[not found] ` <20180712185930.2492-6-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
@ 2018-07-13 13:45 ` Rob Clark
1 sibling, 0 replies; 32+ messages in thread
From: Rob Clark @ 2018-07-13 13:45 UTC (permalink / raw)
To: Jordan Crouse; +Cc: linux-arm-msm, freedreno, dri-devel
On Thu, Jul 12, 2018 at 2:59 PM, Jordan Crouse <jcrouse@codeaurora.org> wrote:
> Add a put function for the coredump printer to bypass printf()
> for constant strings for a speed boost.
s/put/puts/ (and in the $subject)
BR,
-R
>
> v2: Add EXPORT_SYMBOL for _drm_puts_coredump
> Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
> ---
> drivers/gpu/drm/drm_print.c | 43 +++++++++++++++++++++++++++++++++++++
> include/drm/drm_print.h | 2 ++
> 2 files changed, 45 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
> index bef8f0ec5d73..ff20f4a764c8 100644
> --- a/drivers/gpu/drm/drm_print.c
> +++ b/drivers/gpu/drm/drm_print.c
> @@ -30,6 +30,49 @@
> #include <drm/drmP.h>
> #include <drm/drm_print.h>
>
> +void __drm_puts_coredump(struct drm_printer *p, const char *str)
> +{
> + struct drm_print_iterator *iterator = p->arg;
> +
> + ssize_t len;
> +
> + if (!iterator->remain)
> + return;
> +
> + if (iterator->offset < iterator->start) {
> + ssize_t copy;
> +
> + len = strlen(str);
> +
> + if (iterator->offset + len <= iterator->start) {
> + iterator->offset += len;
> + return;
> + }
> +
> + copy = len - (iterator->start - iterator->offset);
> +
> + if (copy > iterator->remain)
> + copy = iterator->remain;
> +
> + /* Copy out the bit of the string that we need */
> + memcpy(iterator->data,
> + str + (iterator->start - iterator->offset), copy);
> +
> + iterator->offset = iterator->start + copy;
> + iterator->remain -= copy;
> + } else {
> + ssize_t pos = iterator->offset - iterator->start;
> +
> + len = min_t(ssize_t, strlen(str), iterator->remain);
> +
> + memcpy(iterator->data + pos, str, len);
> +
> + iterator->offset += len;
> + iterator->remain -= len;
> + }
> +}
> +EXPORT_SYMBOL(__drm_puts_coredump);
> +
> void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf)
> {
> struct drm_print_iterator *iterator = p->arg;
> diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
> index 3bc6ba4b7b2c..2a903ee7b428 100644
> --- a/include/drm/drm_print.h
> +++ b/include/drm/drm_print.h
> @@ -75,6 +75,7 @@ struct drm_printer {
> };
>
> void __drm_printfn_coredump(struct drm_printer *p, struct va_format *vaf);
> +void __drm_puts_coredump(struct drm_printer *p, const char *str);
> void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
> void __drm_puts_seq_file(struct drm_printer *p, const char *str);
> void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
> @@ -129,6 +130,7 @@ drm_coredump_printer(struct drm_print_iterator *iter)
> {
> struct drm_printer p = {
> .printfn = __drm_printfn_coredump,
> + .puts = __drm_puts_coredump,
> .arg = iter,
> };
> return p;
> --
> 2.17.1
>
> _______________________________________________
> Freedreno mailing list
> Freedreno@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/freedreno
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 32+ messages in thread
* [PATCH 06/13] drm/msm/gpu: Capture the state of the GPU
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (4 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 05/13] drm: Add put callback for the coredump printer Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
2018-07-12 18:59 ` [PATCH 07/13] drm/msm/gpu: Convert the GPU show function to use the GPU state Jordan Crouse
` (6 subsequent siblings)
12 siblings, 0 replies; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Add the infrastructure to capture the current state of the GPU and
store it in memory so that it can be dumped later.
For now grab the same basic ringbuffer information and registers
that are provided by the debugfs 'gpu' node but obviously this should
be extended to capture a much larger set of GPU information.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 15 +++++++
drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 14 +++++++
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 22 ++++++++++
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 54 +++++++++++++++++++++++++
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 3 ++
drivers/gpu/drm/msm/msm_gpu.h | 19 +++++++++
6 files changed, 127 insertions(+)
diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
index 3ebbeb3a9b68..b707b5bca9ab 100644
--- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
@@ -427,6 +427,19 @@ static void a3xx_dump(struct msm_gpu *gpu)
gpu_read(gpu, REG_A3XX_RBBM_STATUS));
adreno_dump(gpu);
}
+
+static struct msm_gpu_state *a3xx_gpu_state_get(struct msm_gpu *gpu)
+{
+ struct msm_gpu_state *state = adreno_gpu_state_get(gpu);
+
+ if (IS_ERR(state))
+ return state;
+
+ state->rbbm_status = gpu_read(gpu, REG_A3XX_RBBM_STATUS);
+
+ return state;
+}
+
/* Register offset defines for A3XX */
static const unsigned int a3xx_register_offsets[REG_ADRENO_REGISTER_MAX] = {
REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE, REG_AXXX_CP_RB_BASE),
@@ -453,6 +466,8 @@ static const struct adreno_gpu_funcs funcs = {
#ifdef CONFIG_DEBUG_FS
.show = a3xx_show,
#endif
+ .gpu_state_get = a3xx_gpu_state_get,
+ .gpu_state_put = adreno_gpu_state_put,
},
};
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
index 16d3d596638e..17e97ebc1077 100644
--- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
@@ -465,6 +465,18 @@ static void a4xx_show(struct msm_gpu *gpu, struct seq_file *m)
}
#endif
+static struct msm_gpu_state *a4xx_gpu_state_get(struct msm_gpu *gpu)
+{
+ struct msm_gpu_state *state = adreno_gpu_state_get(gpu);
+
+ if (IS_ERR(state))
+ return state;
+
+ state->rbbm_status = gpu_read(gpu, REG_A4XX_RBBM_STATUS);
+
+ return state;
+}
+
/* Register offset defines for A4XX, in order of enum adreno_regs */
static const unsigned int a4xx_register_offsets[REG_ADRENO_REGISTER_MAX] = {
REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE, REG_A4XX_CP_RB_BASE),
@@ -541,6 +553,8 @@ static const struct adreno_gpu_funcs funcs = {
#ifdef CONFIG_DEBUG_FS
.show = a4xx_show,
#endif
+ .gpu_state_get = a4xx_gpu_state_get,
+ .gpu_state_put = adreno_gpu_state_put,
},
.get_timestamp = a4xx_get_timestamp,
};
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index d39400e5bc42..9e85e4f7016d 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1195,6 +1195,26 @@ static int a5xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
return 0;
}
+static struct msm_gpu_state *a5xx_gpu_state_get(struct msm_gpu *gpu)
+{
+ struct msm_gpu_state *state;
+
+ /*
+ * Temporarily disable hardware clock gating before going into
+ * adreno_show to avoid issues while reading the registers
+ */
+ a5xx_set_hwcg(gpu, false);
+
+ state = adreno_gpu_state_get(gpu);
+
+ if (!IS_ERR(state))
+ state->rbbm_status = gpu_read(gpu, REG_A5XX_RBBM_STATUS);
+
+ a5xx_set_hwcg(gpu, true);
+
+ return state;
+}
+
#ifdef CONFIG_DEBUG_FS
static void a5xx_show(struct msm_gpu *gpu, struct seq_file *m)
{
@@ -1244,6 +1264,8 @@ static const struct adreno_gpu_funcs funcs = {
.debugfs_init = a5xx_debugfs_init,
#endif
.gpu_busy = a5xx_gpu_busy,
+ .gpu_state_get = a5xx_gpu_state_get,
+ .gpu_state_put = adreno_gpu_state_put,
},
.get_timestamp = a5xx_get_timestamp,
};
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index bcbf9f2a29f9..c7a0d278c59e 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -368,6 +368,60 @@ bool adreno_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
return false;
}
+struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu)
+{
+ struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+ struct msm_gpu_state *state;
+ int i, count = 0;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return ERR_PTR(-ENOMEM);
+
+ do_gettimeofday(&state->time);
+
+ for (i = 0; i < gpu->nr_rings; i++) {
+ state->ring[i].fence = gpu->rb[i]->memptrs->fence;
+ state->ring[i].seqno = gpu->rb[i]->seqno;
+ state->ring[i].rptr = get_rptr(adreno_gpu, gpu->rb[i]);
+ state->ring[i].wptr = get_wptr(gpu->rb[i]);
+ }
+
+ /* Count the number of registers */
+ for (i = 0; adreno_gpu->registers[i] != ~0; i += 2)
+ count += adreno_gpu->registers[i + 1] -
+ adreno_gpu->registers[i] + 1;
+
+ state->registers = kcalloc(count * 2, sizeof(u32), GFP_KERNEL);
+ if (state->registers) {
+ int pos = 0;
+
+ for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) {
+ u32 start = adreno_gpu->registers[i];
+ u32 end = adreno_gpu->registers[i + 1];
+ u32 addr;
+
+ for (addr = start; addr <= end; addr++) {
+ state->registers[pos++] = addr;
+ state->registers[pos++] = gpu_read(gpu, addr);
+ }
+ }
+
+ state->nr_registers = count;
+ }
+
+ return state;
+}
+
+void adreno_gpu_state_put(struct msm_gpu_state *state)
+{
+ if (IS_ERR_OR_NULL(state))
+ return;
+
+ kfree(state->registers);
+ kfree(state);
+}
+
#ifdef CONFIG_DEBUG_FS
void adreno_show(struct msm_gpu *gpu, struct seq_file *m)
{
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index bc9ec27e9ed8..734e31a9631f 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -229,6 +229,9 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
void adreno_gpu_cleanup(struct adreno_gpu *gpu);
+struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu);
+void adreno_gpu_state_put(struct msm_gpu_state *state);
+
/* ringbuffer helpers (the parts that are adreno specific) */
static inline void
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index b8241179175a..4be72a612bec 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -27,6 +27,7 @@
struct msm_gem_submit;
struct msm_gpu_perfcntr;
+struct msm_gpu_state;
struct msm_gpu_config {
const char *ioname;
@@ -69,6 +70,8 @@ struct msm_gpu_funcs {
int (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor);
#endif
int (*gpu_busy)(struct msm_gpu *gpu, uint64_t *value);
+ struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu);
+ void (*gpu_state_put)(struct msm_gpu_state *state);
};
struct msm_gpu {
@@ -175,6 +178,22 @@ struct msm_gpu_submitqueue {
struct kref ref;
};
+struct msm_gpu_state {
+ struct timeval time;
+
+ struct {
+ u32 fence;
+ u32 seqno;
+ u32 rptr;
+ u32 wptr;
+ } ring[MSM_GPU_MAX_RINGS];
+
+ int nr_registers;
+ u32 *registers;
+
+ u32 rbbm_status;
+};
+
static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data)
{
msm_writel(data, gpu->mmio + (reg << 2));
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 07/13] drm/msm/gpu: Convert the GPU show function to use the GPU state
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (5 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 06/13] drm/msm/gpu: Capture the state of the GPU Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
[not found] ` <20180712185930.2492-8-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 08/13] drm/msm/gpu: Rearrange the code that collects the task during a hang Jordan Crouse
` (5 subsequent siblings)
12 siblings, 1 reply; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Convert the existing GPU show function to use the GPU state to
dump the information rather than reading it directly from the hardware.
This will require an additional step to capture the state before
dumping it for the existing nodes but it will greatly facilitate reusing
the same code for dumping a previously captured state from a GPU hang.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 11 +--
drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 12 +---
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 18 +----
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 30 ++++----
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 3 +-
drivers/gpu/drm/msm/msm_debugfs.c | 92 ++++++++++++++++++++++---
drivers/gpu/drm/msm/msm_gpu.h | 3 +-
7 files changed, 104 insertions(+), 65 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
index b707b5bca9ab..4cffec2b6adc 100644
--- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
@@ -411,15 +411,6 @@ static const unsigned int a3xx_registers[] = {
~0 /* sentinel */
};
-#ifdef CONFIG_DEBUG_FS
-static void a3xx_show(struct msm_gpu *gpu, struct seq_file *m)
-{
- seq_printf(m, "status: %08x\n",
- gpu_read(gpu, REG_A3XX_RBBM_STATUS));
- adreno_show(gpu, m);
-}
-#endif
-
/* would be nice to not have to duplicate the _show() stuff with printk(): */
static void a3xx_dump(struct msm_gpu *gpu)
{
@@ -464,7 +455,7 @@ static const struct adreno_gpu_funcs funcs = {
.irq = a3xx_irq,
.destroy = a3xx_destroy,
#ifdef CONFIG_DEBUG_FS
- .show = a3xx_show,
+ .show = adreno_show,
#endif
.gpu_state_get = a3xx_gpu_state_get,
.gpu_state_put = adreno_gpu_state_put,
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
index 17e97ebc1077..95f08c22e8d7 100644
--- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
@@ -455,16 +455,6 @@ static const unsigned int a4xx_registers[] = {
~0 /* sentinel */
};
-#ifdef CONFIG_DEBUG_FS
-static void a4xx_show(struct msm_gpu *gpu, struct seq_file *m)
-{
- seq_printf(m, "status: %08x\n",
- gpu_read(gpu, REG_A4XX_RBBM_STATUS));
- adreno_show(gpu, m);
-
-}
-#endif
-
static struct msm_gpu_state *a4xx_gpu_state_get(struct msm_gpu *gpu)
{
struct msm_gpu_state *state = adreno_gpu_state_get(gpu);
@@ -551,7 +541,7 @@ static const struct adreno_gpu_funcs funcs = {
.irq = a4xx_irq,
.destroy = a4xx_destroy,
#ifdef CONFIG_DEBUG_FS
- .show = a4xx_show,
+ .show = adreno_show,
#endif
.gpu_state_get = a4xx_gpu_state_get,
.gpu_state_put = adreno_gpu_state_put,
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index 9e85e4f7016d..5f1aab3c1cb1 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1215,22 +1215,6 @@ static struct msm_gpu_state *a5xx_gpu_state_get(struct msm_gpu *gpu)
return state;
}
-#ifdef CONFIG_DEBUG_FS
-static void a5xx_show(struct msm_gpu *gpu, struct seq_file *m)
-{
- seq_printf(m, "status: %08x\n",
- gpu_read(gpu, REG_A5XX_RBBM_STATUS));
-
- /*
- * Temporarily disable hardware clock gating before going into
- * adreno_show to avoid issues while reading the registers
- */
- a5xx_set_hwcg(gpu, false);
- adreno_show(gpu, m);
- a5xx_set_hwcg(gpu, true);
-}
-#endif
-
static struct msm_ringbuffer *a5xx_active_ring(struct msm_gpu *gpu)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
@@ -1260,7 +1244,7 @@ static const struct adreno_gpu_funcs funcs = {
.irq = a5xx_irq,
.destroy = a5xx_destroy,
#ifdef CONFIG_DEBUG_FS
- .show = a5xx_show,
+ .show = adreno_show,
.debugfs_init = a5xx_debugfs_init,
#endif
.gpu_busy = a5xx_gpu_busy,
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index c7a0d278c59e..0e937eedcec5 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -423,38 +423,34 @@ void adreno_gpu_state_put(struct msm_gpu_state *state)
}
#ifdef CONFIG_DEBUG_FS
-void adreno_show(struct msm_gpu *gpu, struct seq_file *m)
+void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
+ struct seq_file *m)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
int i;
+ if (IS_ERR_OR_NULL(state))
+ return;
+
+ seq_printf(m, "status: %08x\n", state->rbbm_status);
seq_printf(m, "revision: %d (%d.%d.%d.%d)\n",
adreno_gpu->info->revn, adreno_gpu->rev.core,
adreno_gpu->rev.major, adreno_gpu->rev.minor,
adreno_gpu->rev.patchid);
for (i = 0; i < gpu->nr_rings; i++) {
- struct msm_ringbuffer *ring = gpu->rb[i];
-
seq_printf(m, "rb %d: fence: %d/%d\n", i,
- ring->memptrs->fence, ring->seqno);
+ state->ring[i].fence, state->ring[i].seqno);
- seq_printf(m, " rptr: %d\n",
- get_rptr(adreno_gpu, ring));
- seq_printf(m, "rb wptr: %d\n", get_wptr(ring));
+ seq_printf(m, " rptr: %d\n", state->ring[i].rptr);
+ seq_printf(m, "rb wptr: %d\n", state->ring[i].wptr);
}
- /* dump these out in a form that can be parsed by demsm: */
seq_printf(m, "IO:region %s 00000000 00020000\n", gpu->name);
- for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) {
- uint32_t start = adreno_gpu->registers[i];
- uint32_t end = adreno_gpu->registers[i+1];
- uint32_t addr;
-
- for (addr = start; addr <= end; addr++) {
- uint32_t val = gpu_read(gpu, addr);
- seq_printf(m, "IO:R %08x %08x\n", addr<<2, val);
- }
+ for (i = 0; i < state->nr_registers; i++) {
+ seq_printf(m, "IO:R %08x %08x\n",
+ state->registers[i * 2] << 2,
+ state->registers[(i * 2) + 1]);
}
}
#endif
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 734e31a9631f..90b6b59252af 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -216,7 +216,8 @@ void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
void adreno_flush(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
bool adreno_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
#ifdef CONFIG_DEBUG_FS
-void adreno_show(struct msm_gpu *gpu, struct seq_file *m);
+void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
+ struct seq_file *m);
#endif
void adreno_dump_info(struct msm_gpu *gpu);
void adreno_dump(struct msm_gpu *gpu);
diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c
index 1ff3fda245d1..c3da12179888 100644
--- a/drivers/gpu/drm/msm/msm_debugfs.c
+++ b/drivers/gpu/drm/msm/msm_debugfs.c
@@ -16,26 +16,100 @@
*/
#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
#include "msm_drv.h"
#include "msm_gpu.h"
#include "msm_kms.h"
#include "msm_debugfs.h"
-static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
+struct msm_gpu_show_priv {
+ struct msm_gpu_state *state;
+ struct drm_device *dev;
+};
+
+static int msm_gpu_show(struct seq_file *m, void *arg)
+{
+ struct msm_gpu_show_priv *show_priv = m->private;
+ struct msm_drm_private *priv = show_priv->dev->dev_private;
+ struct msm_gpu *gpu = priv->gpu;
+ int ret;
+
+ ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ seq_printf(m, "%s Status:\n", gpu->name);
+ gpu->funcs->show(gpu, show_priv->state, m);
+
+ mutex_unlock(&show_priv->dev->struct_mutex);
+
+ return 0;
+}
+
+static int msm_gpu_release(struct inode *inode, struct file *file)
+{
+ struct seq_file *m = file->private_data;
+ struct msm_gpu_show_priv *show_priv = m->private;
+ struct msm_drm_private *priv = show_priv->dev->dev_private;
+ struct msm_gpu *gpu = priv->gpu;
+ int ret;
+
+ ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ gpu->funcs->gpu_state_put(show_priv->state);
+ mutex_unlock(&show_priv->dev->struct_mutex);
+
+ kfree(show_priv);
+
+ return single_release(inode, file);
+}
+
+static int msm_gpu_open(struct inode *inode, struct file *file)
{
+ struct drm_device *dev = inode->i_private;
struct msm_drm_private *priv = dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
+ struct msm_gpu_show_priv *show_priv;
+ int ret;
- if (gpu) {
- seq_printf(m, "%s Status:\n", gpu->name);
- pm_runtime_get_sync(&gpu->pdev->dev);
- gpu->funcs->show(gpu, m);
- pm_runtime_put_sync(&gpu->pdev->dev);
+ if (!gpu)
+ return -ENODEV;
+
+ show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL);
+ if (!show_priv)
+ return -ENOMEM;
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ pm_runtime_get_sync(&gpu->pdev->dev);
+ show_priv->state = gpu->funcs->gpu_state_get(gpu);
+ pm_runtime_put_sync(&gpu->pdev->dev);
+
+ mutex_unlock(&dev->struct_mutex);
+
+ if (IS_ERR(show_priv->state)) {
+ ret = PTR_ERR(show_priv->state);
+ kfree(show_priv);
+ return ret;
}
- return 0;
+ show_priv->dev = dev;
+
+ return single_open(file, msm_gpu_show, show_priv);
}
+static const struct file_operations msm_gpu_fops = {
+ .owner = THIS_MODULE,
+ .open = msm_gpu_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = msm_gpu_release,
+};
+
static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
{
struct msm_drm_private *priv = dev->dev_private;
@@ -105,7 +179,6 @@ static int show_locked(struct seq_file *m, void *arg)
}
static struct drm_info_list msm_debugfs_list[] = {
- {"gpu", show_locked, 0, msm_gpu_show},
{"gem", show_locked, 0, msm_gem_show},
{ "mm", show_locked, 0, msm_mm_show },
{ "fb", show_locked, 0, msm_fb_show },
@@ -158,6 +231,9 @@ int msm_debugfs_init(struct drm_minor *minor)
return ret;
}
+ debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
+ dev, &msm_gpu_fops);
+
if (priv->kms->funcs->debugfs_init) {
ret = priv->kms->funcs->debugfs_init(priv->kms, minor);
if (ret)
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 4be72a612bec..470f3bb5f834 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -65,7 +65,8 @@ struct msm_gpu_funcs {
void (*destroy)(struct msm_gpu *gpu);
#ifdef CONFIG_DEBUG_FS
/* show GPU status in debugfs: */
- void (*show)(struct msm_gpu *gpu, struct seq_file *m);
+ void (*show)(struct msm_gpu *gpu, struct msm_gpu_state *state,
+ struct seq_file *m);
/* for generation specific debugfs: */
int (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor);
#endif
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 08/13] drm/msm/gpu: Rearrange the code that collects the task during a hang
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (6 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 07/13] drm/msm/gpu: Convert the GPU show function to use the GPU state Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
[not found] ` <20180712185930.2492-9-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-07-12 18:59 ` [PATCH 09/13] drm/msm/gpu: Capture the GPU state on a GPU hang Jordan Crouse
` (4 subsequent siblings)
12 siblings, 1 reply; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Do a bit of cleanup to prepare for upcoming changes to pass the
hanging task comm and cmdline to the crash dump function.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/msm/msm_gpu.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 1c09acfb4028..2ca354047250 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -314,6 +314,7 @@ static void recover_worker(struct work_struct *work)
struct msm_drm_private *priv = dev->dev_private;
struct msm_gem_submit *submit;
struct msm_ringbuffer *cur_ring = gpu->funcs->active_ring(gpu);
+ char *comm = NULL, *cmd = NULL;
int i;
mutex_lock(&dev->struct_mutex);
@@ -327,7 +328,7 @@ static void recover_worker(struct work_struct *work)
rcu_read_lock();
task = pid_task(submit->pid, PIDTYPE_PID);
if (task) {
- char *cmd;
+ comm = kstrdup(task->comm, GFP_KERNEL);
/*
* So slightly annoying, in other paths like
@@ -342,20 +343,21 @@ static void recover_worker(struct work_struct *work)
mutex_unlock(&dev->struct_mutex);
cmd = kstrdup_quotable_cmdline(task, GFP_KERNEL);
mutex_lock(&dev->struct_mutex);
+ }
+ rcu_read_unlock();
+ if (comm && cmd) {
dev_err(dev->dev, "%s: offending task: %s (%s)\n",
- gpu->name, task->comm, cmd);
+ gpu->name, comm, cmd);
msm_rd_dump_submit(priv->hangrd, submit,
- "offending task: %s (%s)", task->comm, cmd);
-
- kfree(cmd);
- } else {
+ "offending task: %s (%s)", comm, cmd);
+ } else
msm_rd_dump_submit(priv->hangrd, submit, NULL);
- }
- rcu_read_unlock();
}
+ kfree(cmd);
+ kfree(comm);
/*
* Update all the rings with the latest and greatest fence.. this
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 09/13] drm/msm/gpu: Capture the GPU state on a GPU hang
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (7 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 08/13] drm/msm/gpu: Rearrange the code that collects the task during a hang Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
2018-07-12 18:59 ` [PATCH 10/13] drm/msm/adreno: Convert the show/crash file format Jordan Crouse
` (3 subsequent siblings)
12 siblings, 0 replies; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Capture the GPU state on a GPU hang and store it for later playback
via the devcoredump facility. Only one crash state is stored at a
time on the assumption that the first hang is usually the most
interesting. The existing crash state can be cleared after capturing
it and then a new one will be captured on the next hang.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/msm/Kconfig | 1 +
drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 2 +-
drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 2 +-
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 +-
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 36 +++++++----
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 6 +-
drivers/gpu/drm/msm/msm_debugfs.c | 5 +-
drivers/gpu/drm/msm/msm_gpu.c | 83 ++++++++++++++++++++++++-
drivers/gpu/drm/msm/msm_gpu.h | 38 ++++++++++-
9 files changed, 154 insertions(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index 38cbde971b48..843a9d40c05e 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -12,6 +12,7 @@ config DRM_MSM
select SHMEM
select TMPFS
select QCOM_SCM
+ select WANT_DEV_COREDUMP
select SND_SOC_HDMI_CODEC if SND_SOC
select SYNC_FILE
select PM_OPP
diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
index 4cffec2b6adc..fc502e412132 100644
--- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
@@ -454,7 +454,7 @@ static const struct adreno_gpu_funcs funcs = {
.active_ring = adreno_active_ring,
.irq = a3xx_irq,
.destroy = a3xx_destroy,
-#ifdef CONFIG_DEBUG_FS
+#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
.show = adreno_show,
#endif
.gpu_state_get = a3xx_gpu_state_get,
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
index 95f08c22e8d7..8129cf037db1 100644
--- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
@@ -540,7 +540,7 @@ static const struct adreno_gpu_funcs funcs = {
.active_ring = adreno_active_ring,
.irq = a4xx_irq,
.destroy = a4xx_destroy,
-#ifdef CONFIG_DEBUG_FS
+#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
.show = adreno_show,
#endif
.gpu_state_get = a4xx_gpu_state_get,
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index 5f1aab3c1cb1..16074fa6bf1e 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1243,8 +1243,10 @@ static const struct adreno_gpu_funcs funcs = {
.active_ring = a5xx_active_ring,
.irq = a5xx_irq,
.destroy = a5xx_destroy,
-#ifdef CONFIG_DEBUG_FS
+#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
.show = adreno_show,
+#endif
+#if defined(CONFIG_DEBUG_FS)
.debugfs_init = a5xx_debugfs_init,
#endif
.gpu_busy = a5xx_gpu_busy,
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 0e937eedcec5..163542487e2c 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -378,6 +378,8 @@ struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu)
if (!state)
return ERR_PTR(-ENOMEM);
+ kref_init(&state->ref);
+
do_gettimeofday(&state->time);
for (i = 0; i < gpu->nr_rings; i++) {
@@ -413,18 +415,28 @@ struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu)
return state;
}
-void adreno_gpu_state_put(struct msm_gpu_state *state)
+static void adreno_gpu_state_destroy(struct kref *kref)
{
- if (IS_ERR_OR_NULL(state))
- return;
+ struct msm_gpu_state *state = container_of(kref,
+ struct msm_gpu_state, ref);
+ kfree(state->comm);
+ kfree(state->cmd);
kfree(state->registers);
kfree(state);
}
-#ifdef CONFIG_DEBUG_FS
+int adreno_gpu_state_put(struct msm_gpu_state *state)
+{
+ if (IS_ERR_OR_NULL(state))
+ return 1;
+
+ return kref_put(&state->ref, adreno_gpu_state_destroy);
+}
+
+#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
- struct seq_file *m)
+ struct drm_printer *p)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
int i;
@@ -432,23 +444,23 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
if (IS_ERR_OR_NULL(state))
return;
- seq_printf(m, "status: %08x\n", state->rbbm_status);
- seq_printf(m, "revision: %d (%d.%d.%d.%d)\n",
+ drm_printf(p, "status: %08x\n", state->rbbm_status);
+ drm_printf(p, "revision: %d (%d.%d.%d.%d)\n",
adreno_gpu->info->revn, adreno_gpu->rev.core,
adreno_gpu->rev.major, adreno_gpu->rev.minor,
adreno_gpu->rev.patchid);
for (i = 0; i < gpu->nr_rings; i++) {
- seq_printf(m, "rb %d: fence: %d/%d\n", i,
+ drm_printf(p, "rb %d: fence: %d/%d\n", i,
state->ring[i].fence, state->ring[i].seqno);
- seq_printf(m, " rptr: %d\n", state->ring[i].rptr);
- seq_printf(m, "rb wptr: %d\n", state->ring[i].wptr);
+ drm_printf(p, " rptr: %d\n", state->ring[i].rptr);
+ drm_printf(p, "rb wptr: %d\n", state->ring[i].wptr);
}
- seq_printf(m, "IO:region %s 00000000 00020000\n", gpu->name);
+ drm_printf(p, "IO:region %s 00000000 00020000\n", gpu->name);
for (i = 0; i < state->nr_registers; i++) {
- seq_printf(m, "IO:R %08x %08x\n",
+ drm_printf(p, "IO:R %08x %08x\n",
state->registers[i * 2] << 2,
state->registers[(i * 2) + 1]);
}
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 90b6b59252af..4a868aaf1a70 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -215,9 +215,9 @@ void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
struct msm_file_private *ctx);
void adreno_flush(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
bool adreno_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
-#ifdef CONFIG_DEBUG_FS
+#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
- struct seq_file *m);
+ struct drm_printer *p);
#endif
void adreno_dump_info(struct msm_gpu *gpu);
void adreno_dump(struct msm_gpu *gpu);
@@ -231,7 +231,7 @@ void adreno_gpu_cleanup(struct adreno_gpu *gpu);
struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu);
-void adreno_gpu_state_put(struct msm_gpu_state *state);
+int adreno_gpu_state_put(struct msm_gpu_state *state);
/* ringbuffer helpers (the parts that are adreno specific) */
diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c
index c3da12179888..f0da0d3c8a80 100644
--- a/drivers/gpu/drm/msm/msm_debugfs.c
+++ b/drivers/gpu/drm/msm/msm_debugfs.c
@@ -29,6 +29,7 @@ struct msm_gpu_show_priv {
static int msm_gpu_show(struct seq_file *m, void *arg)
{
+ struct drm_printer p = drm_seq_file_printer(m);
struct msm_gpu_show_priv *show_priv = m->private;
struct msm_drm_private *priv = show_priv->dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
@@ -38,8 +39,8 @@ static int msm_gpu_show(struct seq_file *m, void *arg)
if (ret)
return ret;
- seq_printf(m, "%s Status:\n", gpu->name);
- gpu->funcs->show(gpu, show_priv->state, m);
+ drm_printf(&p, "%s Status:\n", gpu->name);
+ gpu->funcs->show(gpu, show_priv->state, &p);
mutex_unlock(&show_priv->dev->struct_mutex);
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 2ca354047250..1945736fc448 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -20,10 +20,11 @@
#include "msm_mmu.h"
#include "msm_fence.h"
+#include <generated/utsrelease.h>
#include <linux/string_helpers.h>
#include <linux/pm_opp.h>
#include <linux/devfreq.h>
-
+#include <linux/devcoredump.h>
/*
* Power Management:
@@ -273,6 +274,81 @@ int msm_gpu_hw_init(struct msm_gpu *gpu)
return ret;
}
+#ifdef CONFIG_DEV_COREDUMP
+static ssize_t msm_gpu_devcoredump_read(char *buffer, loff_t offset,
+ size_t count, void *data, size_t datalen)
+{
+ struct msm_gpu *gpu = data;
+ struct drm_print_iterator iter;
+ struct drm_printer p;
+ struct msm_gpu_state *state;
+
+ state = msm_gpu_crashstate_get(gpu);
+ if (!state)
+ return 0;
+
+ iter.data = buffer;
+ iter.offset = 0;
+ iter.start = offset;
+ iter.remain = count;
+
+ p = drm_coredump_printer(&iter);
+
+ drm_printf(&p, "---\n");
+ drm_printf(&p, "kernel: " UTS_RELEASE "\n");
+ drm_printf(&p, "module: " KBUILD_MODNAME "\n");
+ drm_printf(&p, "time: %ld.%ld\n",
+ state->time.tv_sec, state->time.tv_usec);
+ if (state->comm)
+ drm_printf(&p, "comm: %s\n", state->comm);
+ if (state->cmd)
+ drm_printf(&p, "cmdline: %s\n", state->cmd);
+
+ gpu->funcs->show(gpu, state, &p);
+
+ msm_gpu_crashstate_put(gpu);
+
+ return count - iter.remain;
+}
+
+static void msm_gpu_devcoredump_free(void *data)
+{
+ struct msm_gpu *gpu = data;
+
+ msm_gpu_crashstate_put(gpu);
+}
+
+static void msm_gpu_crashstate_capture(struct msm_gpu *gpu, char *comm,
+ char *cmd)
+{
+ struct msm_gpu_state *state;
+
+ /* Only save one crash state at a time */
+ if (gpu->crashstate)
+ return;
+
+ state = gpu->funcs->gpu_state_get(gpu);
+ if (IS_ERR_OR_NULL(state))
+ return;
+
+ /* Fill in the additional crash state information */
+ state->comm = kstrdup(comm, GFP_KERNEL);
+ state->cmd = kstrdup(cmd, GFP_KERNEL);
+
+ /* Set the active crash state to be dumped on failure */
+ gpu->crashstate = state;
+
+ /* FIXME: Release the crashstate if this errors out? */
+ dev_coredumpm(gpu->dev->dev, THIS_MODULE, gpu, 0, GFP_KERNEL,
+ msm_gpu_devcoredump_read, msm_gpu_devcoredump_free);
+}
+#else
+static void msm_gpu_crashstate_capture(struct msm_gpu *gpu, char *comm,
+ char *cmd)
+{
+}
+#endif
+
/*
* Hangcheck detection for locked gpu:
*/
@@ -356,6 +432,11 @@ static void recover_worker(struct work_struct *work)
msm_rd_dump_submit(priv->hangrd, submit, NULL);
}
+ /* Record the crash state */
+ pm_runtime_get_sync(&gpu->pdev->dev);
+ msm_gpu_crashstate_capture(gpu, comm, cmd);
+ pm_runtime_put_sync(&gpu->pdev->dev);
+
kfree(cmd);
kfree(comm);
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 470f3bb5f834..e65f507954c0 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -66,13 +66,13 @@ struct msm_gpu_funcs {
#ifdef CONFIG_DEBUG_FS
/* show GPU status in debugfs: */
void (*show)(struct msm_gpu *gpu, struct msm_gpu_state *state,
- struct seq_file *m);
+ struct drm_printer *p);
/* for generation specific debugfs: */
int (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor);
#endif
int (*gpu_busy)(struct msm_gpu *gpu, uint64_t *value);
struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu);
- void (*gpu_state_put)(struct msm_gpu_state *state);
+ int (*gpu_state_put)(struct msm_gpu_state *state);
};
struct msm_gpu {
@@ -133,6 +133,8 @@ struct msm_gpu {
u64 busy_cycles;
ktime_t time;
} devfreq;
+
+ struct msm_gpu_state *crashstate;
};
/* It turns out that all targets use the same ringbuffer size */
@@ -180,6 +182,7 @@ struct msm_gpu_submitqueue {
};
struct msm_gpu_state {
+ struct kref ref;
struct timeval time;
struct {
@@ -193,6 +196,9 @@ struct msm_gpu_state {
u32 *registers;
u32 rbbm_status;
+
+ char *comm;
+ char *cmd;
};
static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data)
@@ -274,4 +280,32 @@ static inline void msm_submitqueue_put(struct msm_gpu_submitqueue *queue)
kref_put(&queue->ref, msm_submitqueue_destroy);
}
+static inline struct msm_gpu_state *msm_gpu_crashstate_get(struct msm_gpu *gpu)
+{
+ struct msm_gpu_state *state = NULL;
+
+ mutex_lock(&gpu->dev->struct_mutex);
+
+ if (gpu->crashstate) {
+ kref_get(&gpu->crashstate->ref);
+ state = gpu->crashstate;
+ }
+
+ mutex_unlock(&gpu->dev->struct_mutex);
+
+ return state;
+}
+
+static inline void msm_gpu_crashstate_put(struct msm_gpu *gpu)
+{
+ mutex_lock(&gpu->dev->struct_mutex);
+
+ if (gpu->crashstate) {
+ if (gpu->funcs->gpu_state_put(gpu->crashstate))
+ gpu->crashstate = NULL;
+ }
+
+ mutex_unlock(&gpu->dev->struct_mutex);
+}
+
#endif /* __MSM_GPU_H__ */
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 10/13] drm/msm/adreno: Convert the show/crash file format
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (8 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 09/13] drm/msm/gpu: Capture the GPU state on a GPU hang Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
2018-07-12 19:51 ` Daniel Vetter
2018-07-12 18:59 ` [PATCH 11/13] drm/msm/adreno: Add ringbuffer data to the GPU state Jordan Crouse
` (2 subsequent siblings)
12 siblings, 1 reply; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Convert the format of the 'show' debugfs file and the crash
dump to a format resembling YAML. This should be easier to
parse and be more flexible for future changes and expansions.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
Documentation/gpu/drm-msm-crash-dump.txt | 46 ++++++++++++++++++++++++
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 20 ++++++-----
2 files changed, 58 insertions(+), 8 deletions(-)
create mode 100644 Documentation/gpu/drm-msm-crash-dump.txt
diff --git a/Documentation/gpu/drm-msm-crash-dump.txt b/Documentation/gpu/drm-msm-crash-dump.txt
new file mode 100644
index 000000000000..930e4c970a62
--- /dev/null
+++ b/Documentation/gpu/drm-msm-crash-dump.txt
@@ -0,0 +1,46 @@
+# drm/msm GPU crash dump format
+#
+# This is a description of the format of the drm/msm GPU crash dump format that
+# can be read from /sys/kernel/dri/X/show or from devcoredump following a GPU
+# hang or fault
+
+---
+kernel: # [string] The kernel version as printed by UTS_RELEASE
+module: # [string] The module that generated the crash dump
+time: # [seconds.microseconds] The kernel time at crash
+comm: # [string] comm string for the binary that generated the fault
+ # (if known)
+cmdline: # [string] the cmdline for the binary that generated the fault
+ # (if known)
+revision: # [ id core.major.minor.patchlevel] The GPU id followed by the
+ # individual components of the id separated by dots
+rbbm-status: # [hex] The current value of RBBM_STATUS which shows what GPU
+ # components were in use at the time of the crash
+ringbuffer: # Ringbuffer data. There will be a sequence for each ringbuffer
+ -id: # [decimal] Ringbuffer identifier (0 based index)
+ last-fence: # [decimal] The last fence issued on the ring
+ retired-fence: # [decimal] THe last fence retired on the ring
+ rptr: # [decimal] The current read pointer (rptr) for the ring
+ wptr: # [decimal] The current write pointer (wptr) for the
+ # ring
+ size: # [decimal] The maximum size of the ring programmed in
+ # the hardware
+ data: # [ascii85] The contents of the ring encoded as ascii85.
+ # Only the unused portions of the ring will be printed
+ # (up to a maximum of 'size' bytes)
+bos: # List of buffers from the hanging submission (if known)
+ -iova: # [hex] GPU address of the buffer
+ size: # [decimal] Size of the buffer (in bytes)
+ data: # [ascii85] The contents of the buffer encoded as
+ # ascii85. Only the contents of buffers marked as
+ # readable are dumped. Trailing zeros at the end of the
+ # buffer won't be dumped.
+registers: # Sets of register values. This section can be used multiple
+ # times for different ranges of registers. Each register will be
+ # on its own line.
+ - [offset, value] # offset: [hex] byte offset of the register
+ # value: [hex] value of the register
+
+registers-hlsq: # (5xx only) Same format as registers. Register data that
+ # only accessible from the HLSQ aperture captured by the
+ # HW based crashdumper
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 163542487e2c..15fe0d029ba6 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -444,23 +444,27 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
if (IS_ERR_OR_NULL(state))
return;
- drm_printf(p, "status: %08x\n", state->rbbm_status);
drm_printf(p, "revision: %d (%d.%d.%d.%d)\n",
adreno_gpu->info->revn, adreno_gpu->rev.core,
adreno_gpu->rev.major, adreno_gpu->rev.minor,
adreno_gpu->rev.patchid);
- for (i = 0; i < gpu->nr_rings; i++) {
- drm_printf(p, "rb %d: fence: %d/%d\n", i,
- state->ring[i].fence, state->ring[i].seqno);
+ drm_printf(p, "rbbm-status: 0x%08x\n", state->rbbm_status);
+
+ drm_puts(p, "ringbuffer:\n");
- drm_printf(p, " rptr: %d\n", state->ring[i].rptr);
- drm_printf(p, "rb wptr: %d\n", state->ring[i].wptr);
+ for (i = 0; i < gpu->nr_rings; i++) {
+ drm_printf(p, " - id: %d\n", i);
+ drm_printf(p, " last-fence: %d\n", state->ring[i].seqno);
+ drm_printf(p, " retired-fence: %d\n", state->ring[i].fence);
+ drm_printf(p, " rptr: %d\n", state->ring[i].rptr);
+ drm_printf(p, " wptr: %d\n", state->ring[i].wptr);
}
- drm_printf(p, "IO:region %s 00000000 00020000\n", gpu->name);
+ drm_puts(p, "registers:\n");
+
for (i = 0; i < state->nr_registers; i++) {
- drm_printf(p, "IO:R %08x %08x\n",
+ drm_printf(p, " - { offset: 0x%04x, value: 0x%08x }\n",
state->registers[i * 2] << 2,
state->registers[(i * 2) + 1]);
}
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* Re: [PATCH 10/13] drm/msm/adreno: Convert the show/crash file format
2018-07-12 18:59 ` [PATCH 10/13] drm/msm/adreno: Convert the show/crash file format Jordan Crouse
@ 2018-07-12 19:51 ` Daniel Vetter
0 siblings, 0 replies; 32+ messages in thread
From: Daniel Vetter @ 2018-07-12 19:51 UTC (permalink / raw)
To: Jordan Crouse; +Cc: linux-arm-msm, freedreno, dri-devel
On Thu, Jul 12, 2018 at 12:59:27PM -0600, Jordan Crouse wrote:
> Convert the format of the 'show' debugfs file and the crash
> dump to a format resembling YAML. This should be easier to
> parse and be more flexible for future changes and expansions.
>
> Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
> ---
> Documentation/gpu/drm-msm-crash-dump.txt | 46 ++++++++++++++++++++++++
.rst would be nice, plus including it some msm.rst overview file like we
have for other drivers. For drivers we also tend to omit the drm prefix in
the documentation.
-Daniel
> drivers/gpu/drm/msm/adreno/adreno_gpu.c | 20 ++++++-----
> 2 files changed, 58 insertions(+), 8 deletions(-)
> create mode 100644 Documentation/gpu/drm-msm-crash-dump.txt
>
> diff --git a/Documentation/gpu/drm-msm-crash-dump.txt b/Documentation/gpu/drm-msm-crash-dump.txt
> new file mode 100644
> index 000000000000..930e4c970a62
> --- /dev/null
> +++ b/Documentation/gpu/drm-msm-crash-dump.txt
> @@ -0,0 +1,46 @@
> +# drm/msm GPU crash dump format
> +#
> +# This is a description of the format of the drm/msm GPU crash dump format that
> +# can be read from /sys/kernel/dri/X/show or from devcoredump following a GPU
> +# hang or fault
> +
> +---
> +kernel: # [string] The kernel version as printed by UTS_RELEASE
> +module: # [string] The module that generated the crash dump
> +time: # [seconds.microseconds] The kernel time at crash
> +comm: # [string] comm string for the binary that generated the fault
> + # (if known)
> +cmdline: # [string] the cmdline for the binary that generated the fault
> + # (if known)
> +revision: # [ id core.major.minor.patchlevel] The GPU id followed by the
> + # individual components of the id separated by dots
> +rbbm-status: # [hex] The current value of RBBM_STATUS which shows what GPU
> + # components were in use at the time of the crash
> +ringbuffer: # Ringbuffer data. There will be a sequence for each ringbuffer
> + -id: # [decimal] Ringbuffer identifier (0 based index)
> + last-fence: # [decimal] The last fence issued on the ring
> + retired-fence: # [decimal] THe last fence retired on the ring
> + rptr: # [decimal] The current read pointer (rptr) for the ring
> + wptr: # [decimal] The current write pointer (wptr) for the
> + # ring
> + size: # [decimal] The maximum size of the ring programmed in
> + # the hardware
> + data: # [ascii85] The contents of the ring encoded as ascii85.
> + # Only the unused portions of the ring will be printed
> + # (up to a maximum of 'size' bytes)
> +bos: # List of buffers from the hanging submission (if known)
> + -iova: # [hex] GPU address of the buffer
> + size: # [decimal] Size of the buffer (in bytes)
> + data: # [ascii85] The contents of the buffer encoded as
> + # ascii85. Only the contents of buffers marked as
> + # readable are dumped. Trailing zeros at the end of the
> + # buffer won't be dumped.
> +registers: # Sets of register values. This section can be used multiple
> + # times for different ranges of registers. Each register will be
> + # on its own line.
> + - [offset, value] # offset: [hex] byte offset of the register
> + # value: [hex] value of the register
> +
> +registers-hlsq: # (5xx only) Same format as registers. Register data that
> + # only accessible from the HLSQ aperture captured by the
> + # HW based crashdumper
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> index 163542487e2c..15fe0d029ba6 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> @@ -444,23 +444,27 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
> if (IS_ERR_OR_NULL(state))
> return;
>
> - drm_printf(p, "status: %08x\n", state->rbbm_status);
> drm_printf(p, "revision: %d (%d.%d.%d.%d)\n",
> adreno_gpu->info->revn, adreno_gpu->rev.core,
> adreno_gpu->rev.major, adreno_gpu->rev.minor,
> adreno_gpu->rev.patchid);
>
> - for (i = 0; i < gpu->nr_rings; i++) {
> - drm_printf(p, "rb %d: fence: %d/%d\n", i,
> - state->ring[i].fence, state->ring[i].seqno);
> + drm_printf(p, "rbbm-status: 0x%08x\n", state->rbbm_status);
> +
> + drm_puts(p, "ringbuffer:\n");
>
> - drm_printf(p, " rptr: %d\n", state->ring[i].rptr);
> - drm_printf(p, "rb wptr: %d\n", state->ring[i].wptr);
> + for (i = 0; i < gpu->nr_rings; i++) {
> + drm_printf(p, " - id: %d\n", i);
> + drm_printf(p, " last-fence: %d\n", state->ring[i].seqno);
> + drm_printf(p, " retired-fence: %d\n", state->ring[i].fence);
> + drm_printf(p, " rptr: %d\n", state->ring[i].rptr);
> + drm_printf(p, " wptr: %d\n", state->ring[i].wptr);
> }
>
> - drm_printf(p, "IO:region %s 00000000 00020000\n", gpu->name);
> + drm_puts(p, "registers:\n");
> +
> for (i = 0; i < state->nr_registers; i++) {
> - drm_printf(p, "IO:R %08x %08x\n",
> + drm_printf(p, " - { offset: 0x%04x, value: 0x%08x }\n",
> state->registers[i * 2] << 2,
> state->registers[(i * 2) + 1]);
> }
> --
> 2.17.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 32+ messages in thread
* [PATCH 11/13] drm/msm/adreno: Add ringbuffer data to the GPU state
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (9 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 10/13] drm/msm/adreno: Convert the show/crash file format Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
2018-07-12 18:59 ` [PATCH 12/13] drm/msm/adreno: Add a5xx specific registers for " Jordan Crouse
2018-07-12 18:59 ` [PATCH 13/13] drm/msm/gpu: Add the buffer objects from the submit to the crash dump Jordan Crouse
12 siblings, 0 replies; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Add the contents of each ringbuffer to the GPU state and dump the
data in the crash file encoded with ascii85. To save space only
the used portions of the ringbuffer are dumped.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
Documentation/gpu/drm-msm-crash-dump.txt | 5 +++
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 41 ++++++++++++++++++++++++
drivers/gpu/drm/msm/msm_gpu.h | 2 ++
3 files changed, 48 insertions(+)
diff --git a/Documentation/gpu/drm-msm-crash-dump.txt b/Documentation/gpu/drm-msm-crash-dump.txt
index 930e4c970a62..7083075c6f87 100644
--- a/Documentation/gpu/drm-msm-crash-dump.txt
+++ b/Documentation/gpu/drm-msm-crash-dump.txt
@@ -35,6 +35,11 @@ bos: # List of buffers from the hanging submission (if known)
# ascii85. Only the contents of buffers marked as
# readable are dumped. Trailing zeros at the end of the
# buffer won't be dumped.
+ size: # [decimal] The maximum size of the ring programmed in
+ # the hardware
+ data: # [ascii85] The contents of the ring encoded as ascii85.
+ # Only the unused portions of the ring will be printed
+ # (up to a maximum of 'size' bytes)
registers: # Sets of register values. This section can be used multiple
# times for different ranges of registers. Each register will be
# on its own line.
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 15fe0d029ba6..92acce377253 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -17,6 +17,7 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <linux/ascii85.h>
#include <linux/pm_opp.h>
#include "adreno_gpu.h"
#include "msm_gem.h"
@@ -383,10 +384,30 @@ struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu)
do_gettimeofday(&state->time);
for (i = 0; i < gpu->nr_rings; i++) {
+ int size = 0, j;
+
state->ring[i].fence = gpu->rb[i]->memptrs->fence;
state->ring[i].seqno = gpu->rb[i]->seqno;
state->ring[i].rptr = get_rptr(adreno_gpu, gpu->rb[i]);
state->ring[i].wptr = get_wptr(gpu->rb[i]);
+
+ /*
+ * Only copy used parts of the ring buffers (this should save
+ * data size for lightly used rings)
+ */
+ for (j = 0; j < MSM_GPU_RINGBUFFER_SZ >> 2; j++)
+ if (gpu->rb[i]->start[j])
+ size = j;
+
+ if (size) {
+ state->ring[i].data = kmalloc((size + 1) << 2,
+ GFP_KERNEL);
+ if (state->ring[i].data) {
+ memcpy(state->ring[i].data, gpu->rb[i]->start,
+ (size + 1) << 2);
+ state->ring[i].data_size = (size + 1) << 2;
+ }
+ }
}
/* Count the number of registers */
@@ -417,9 +438,13 @@ struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu)
static void adreno_gpu_state_destroy(struct kref *kref)
{
+ int i;
struct msm_gpu_state *state = container_of(kref,
struct msm_gpu_state, ref);
+ for (i = 0; i < ARRAY_SIZE(state->ring); i++)
+ kfree(state->ring[i].data);
+
kfree(state->comm);
kfree(state->cmd);
kfree(state->registers);
@@ -459,6 +484,22 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
drm_printf(p, " retired-fence: %d\n", state->ring[i].fence);
drm_printf(p, " rptr: %d\n", state->ring[i].rptr);
drm_printf(p, " wptr: %d\n", state->ring[i].wptr);
+ drm_printf(p, " size: %d\n", MSM_GPU_RINGBUFFER_SZ);
+
+ if (state->ring[i].data && state->ring[i].data_size) {
+ u32 *ptr = (u32 *) state->ring[i].data;
+ char out[ASCII85_BUFSZ];
+ long len = ascii85_encode_len(state->ring[i].data_size);
+ int j;
+
+ drm_printf(p, " data: !!ascii85 |\n");
+ drm_printf(p, " ");
+
+ for (j = 0; j < len; j++)
+ drm_printf(p, ascii85_encode(ptr[j], out));
+
+ drm_printf(p, "\n");
+ }
}
drm_puts(p, "registers:\n");
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index e65f507954c0..48f7b21f1cae 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -190,6 +190,8 @@ struct msm_gpu_state {
u32 seqno;
u32 rptr;
u32 wptr;
+ void *data;
+ int data_size;
} ring[MSM_GPU_MAX_RINGS];
int nr_registers;
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 12/13] drm/msm/adreno: Add a5xx specific registers for the GPU state
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (10 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 11/13] drm/msm/adreno: Add ringbuffer data to the GPU state Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
2018-07-12 18:59 ` [PATCH 13/13] drm/msm/gpu: Add the buffer objects from the submit to the crash dump Jordan Crouse
12 siblings, 0 replies; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
HLSQ, SP and TP registers are only accessible from a special
aperture and to make matters worse the aperture is blocked from
the CPU on targets that can support secure rendering. Luckily the
GPU hardware has its own purpose built register dumper that can
access the registers from the aperture. Add a5xx specific code
to program the crashdumper and retrieve the wayward registers
and dump them for the crash state.
Also, remove a block of registers the regular CPU accessible
list that aren't useful for debug which helps reduce the size
of the crash state file by a goodly amount.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 8 +-
drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 8 +-
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 236 ++++++++++++++++++++++--
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 23 +--
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 4 +-
5 files changed, 248 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
index fc502e412132..669c2d4b070d 100644
--- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
@@ -421,10 +421,12 @@ static void a3xx_dump(struct msm_gpu *gpu)
static struct msm_gpu_state *a3xx_gpu_state_get(struct msm_gpu *gpu)
{
- struct msm_gpu_state *state = adreno_gpu_state_get(gpu);
+ struct msm_gpu_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (IS_ERR(state))
- return state;
+ if (!state)
+ return ERR_PTR(-ENOMEM);
+
+ adreno_gpu_state_get(gpu, state);
state->rbbm_status = gpu_read(gpu, REG_A3XX_RBBM_STATUS);
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
index 8129cf037db1..7c4e6dc1ed59 100644
--- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
@@ -457,10 +457,12 @@ static const unsigned int a4xx_registers[] = {
static struct msm_gpu_state *a4xx_gpu_state_get(struct msm_gpu *gpu)
{
- struct msm_gpu_state *state = adreno_gpu_state_get(gpu);
+ struct msm_gpu_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (IS_ERR(state))
- return state;
+ if (!state)
+ return ERR_PTR(-ENOMEM);
+
+ adreno_gpu_state_get(gpu, state);
state->rbbm_status = gpu_read(gpu, REG_A4XX_RBBM_STATUS);
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index 16074fa6bf1e..bd84f71d27d8 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -19,6 +19,7 @@
#include <linux/soc/qcom/mdt_loader.h>
#include <linux/pm_opp.h>
#include <linux/nvmem-consumer.h>
+#include <linux/iopoll.h>
#include "msm_gem.h"
#include "msm_mmu.h"
#include "a5xx_gpu.h"
@@ -1123,8 +1124,9 @@ static const u32 a5xx_registers[] = {
0xE800, 0xE806, 0xE810, 0xE89A, 0xE8A0, 0xE8A4, 0xE8AA, 0xE8EB,
0xE900, 0xE905, 0xEB80, 0xEB8F, 0xEBB0, 0xEBB0, 0xEC00, 0xEC05,
0xEC08, 0xECE9, 0xECF0, 0xECF0, 0xEA80, 0xEA80, 0xEA82, 0xEAA3,
- 0xEAA5, 0xEAC2, 0xA800, 0xA8FF, 0xAC60, 0xAC60, 0xB000, 0xB97F,
- 0xB9A0, 0xB9BF, ~0
+ 0xEAA5, 0xEAC2, 0xA800, 0xA800, 0xA820, 0xA828, 0xA840, 0xA87D,
+ 0XA880, 0xA88D, 0xA890, 0xA8A3, 0xA8D0, 0xA8D8, 0xA8E0, 0xA8F5,
+ 0xAC60, 0xAC60, ~0,
};
static void a5xx_dump(struct msm_gpu *gpu)
@@ -1195,25 +1197,233 @@ static int a5xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
return 0;
}
+struct a5xx_crashdumper {
+ void *ptr;
+ struct drm_gem_object *bo;
+ u64 iova;
+};
+
+struct a5xx_gpu_state {
+ struct msm_gpu_state base;
+ u32 *hlsqregs;
+};
+
+#define gpu_poll_timeout(gpu, addr, val, cond, interval, timeout) \
+ readl_poll_timeout((gpu)->mmio + ((addr) << 2), val, cond, \
+ interval, timeout)
+
+static int a5xx_crashdumper_init(struct msm_gpu *gpu,
+ struct a5xx_crashdumper *dumper)
+{
+ dumper->ptr = msm_gem_kernel_new_locked(gpu->dev,
+ SZ_1M, MSM_BO_UNCACHED, gpu->aspace,
+ &dumper->bo, &dumper->iova);
+
+ if (IS_ERR(dumper->ptr))
+ return PTR_ERR(dumper->ptr);
+
+ return 0;
+}
+
+static void a5xx_crashdumper_free(struct msm_gpu *gpu,
+ struct a5xx_crashdumper *dumper)
+{
+ msm_gem_put_iova(dumper->bo, gpu->aspace);
+ msm_gem_put_vaddr(dumper->bo);
+
+ drm_gem_object_unreference(dumper->bo);
+}
+
+static int a5xx_crashdumper_run(struct msm_gpu *gpu,
+ struct a5xx_crashdumper *dumper)
+{
+ u32 val;
+
+ if (IS_ERR_OR_NULL(dumper->ptr))
+ return -EINVAL;
+
+ gpu_write64(gpu, REG_A5XX_CP_CRASH_SCRIPT_BASE_LO,
+ REG_A5XX_CP_CRASH_SCRIPT_BASE_HI, dumper->iova);
+
+ gpu_write(gpu, REG_A5XX_CP_CRASH_DUMP_CNTL, 1);
+
+ return gpu_poll_timeout(gpu, REG_A5XX_CP_CRASH_DUMP_CNTL, val,
+ val & 0x04, 100, 10000);
+}
+
+/*
+ * These are a list of the registers that need to be read through the HLSQ
+ * aperture through the crashdumper. These are not nominally accessible from
+ * the CPU on a secure platform.
+ */
+static const struct {
+ u32 type;
+ u32 regoffset;
+ u32 count;
+} a5xx_hlsq_aperture_regs[] = {
+ { 0x35, 0xe00, 0x32 }, /* HSLQ non-context */
+ { 0x31, 0x2080, 0x1 }, /* HLSQ 2D context 0 */
+ { 0x33, 0x2480, 0x1 }, /* HLSQ 2D context 1 */
+ { 0x32, 0xe780, 0x62 }, /* HLSQ 3D context 0 */
+ { 0x34, 0xef80, 0x62 }, /* HLSQ 3D context 1 */
+ { 0x3f, 0x0ec0, 0x40 }, /* SP non-context */
+ { 0x3d, 0x2040, 0x1 }, /* SP 2D context 0 */
+ { 0x3b, 0x2440, 0x1 }, /* SP 2D context 1 */
+ { 0x3e, 0xe580, 0x170 }, /* SP 3D context 0 */
+ { 0x3c, 0xed80, 0x170 }, /* SP 3D context 1 */
+ { 0x3a, 0x0f00, 0x1c }, /* TP non-context */
+ { 0x38, 0x2000, 0xa }, /* TP 2D context 0 */
+ { 0x36, 0x2400, 0xa }, /* TP 2D context 1 */
+ { 0x39, 0xe700, 0x80 }, /* TP 3D context 0 */
+ { 0x37, 0xef00, 0x80 }, /* TP 3D context 1 */
+};
+
+static void a5xx_gpu_state_get_hlsq_regs(struct msm_gpu *gpu,
+ struct a5xx_gpu_state *a5xx_state)
+{
+ struct a5xx_crashdumper dumper = { 0 };
+ u32 offset, count = 0;
+ u64 *ptr;
+ int i;
+
+ if (a5xx_crashdumper_init(gpu, &dumper))
+ return;
+
+ /* The script will be written at offset 0 */
+ ptr = dumper.ptr;
+
+ /* Start writing the data at offset 256k */
+ offset = dumper.iova + (256 * SZ_1K);
+
+ /* Count how many additional registers to get from the HLSQ aperture */
+ for (i = 0; i < ARRAY_SIZE(a5xx_hlsq_aperture_regs); i++)
+ count += a5xx_hlsq_aperture_regs[i].count;
+
+ a5xx_state->hlsqregs = kcalloc(count, sizeof(u32), GFP_KERNEL);
+ if (!a5xx_state->hlsqregs)
+ return;
+
+ /* Build the crashdump script */
+ for (i = 0; i < ARRAY_SIZE(a5xx_hlsq_aperture_regs); i++) {
+ u32 type = a5xx_hlsq_aperture_regs[i].type;
+ u32 c = a5xx_hlsq_aperture_regs[i].count;
+
+ /* Write the register to select the desired bank */
+ *ptr++ = ((u64) type << 8);
+ *ptr++ = (((u64) REG_A5XX_HLSQ_DBG_READ_SEL) << 44) |
+ (1 << 21) | 1;
+
+ *ptr++ = offset;
+ *ptr++ = (((u64) REG_A5XX_HLSQ_DBG_AHB_READ_APERTURE) << 44)
+ | c;
+
+ offset += c * sizeof(u32);
+ }
+
+ /* Write two zeros to close off the script */
+ *ptr++ = 0;
+ *ptr++ = 0;
+
+ if (a5xx_crashdumper_run(gpu, &dumper)) {
+ kfree(a5xx_state->hlsqregs);
+ a5xx_crashdumper_free(gpu, &dumper);
+ return;
+ }
+
+ /* Copy the data from the crashdumper to the state */
+ memcpy(a5xx_state->hlsqregs, dumper.ptr + (256 * SZ_1K),
+ count * sizeof(u32));
+
+ a5xx_crashdumper_free(gpu, &dumper);
+}
+
static struct msm_gpu_state *a5xx_gpu_state_get(struct msm_gpu *gpu)
{
- struct msm_gpu_state *state;
+ struct a5xx_gpu_state *a5xx_state = kzalloc(sizeof(*a5xx_state),
+ GFP_KERNEL);
- /*
- * Temporarily disable hardware clock gating before going into
- * adreno_show to avoid issues while reading the registers
- */
+ if (!a5xx_state)
+ return ERR_PTR(-ENOMEM);
+
+ /* Temporarily disable hardware clock gating before reading the hw */
a5xx_set_hwcg(gpu, false);
- state = adreno_gpu_state_get(gpu);
+ /* First get the generic state from the adreno core */
+ adreno_gpu_state_get(gpu, &(a5xx_state->base));
+
+ a5xx_state->base.rbbm_status = gpu_read(gpu, REG_A5XX_RBBM_STATUS);
- if (!IS_ERR(state))
- state->rbbm_status = gpu_read(gpu, REG_A5XX_RBBM_STATUS);
+ /* Get the HLSQ regs with the help of the crashdumper */
+ a5xx_gpu_state_get_hlsq_regs(gpu, a5xx_state);
a5xx_set_hwcg(gpu, true);
- return state;
+ return &a5xx_state->base;
+}
+
+static void a5xx_gpu_state_destroy(struct kref *kref)
+{
+ struct msm_gpu_state *state = container_of(kref,
+ struct msm_gpu_state, ref);
+ struct a5xx_gpu_state *a5xx_state = container_of(state,
+ struct a5xx_gpu_state, base);
+
+ kfree(a5xx_state->hlsqregs);
+
+ adreno_gpu_state_destroy(state);
+ kfree(a5xx_state);
+}
+
+int a5xx_gpu_state_put(struct msm_gpu_state *state)
+{
+ if (IS_ERR_OR_NULL(state))
+ return 1;
+
+ return kref_put(&state->ref, a5xx_gpu_state_destroy);
+}
+
+
+#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
+void a5xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
+ struct drm_printer *p)
+{
+ int i, j;
+ u32 pos = 0;
+ struct a5xx_gpu_state *a5xx_state = container_of(state,
+ struct a5xx_gpu_state, base);
+
+ if (IS_ERR_OR_NULL(state))
+ return;
+
+ adreno_show(gpu, state, p);
+
+ /* Dump the additional a5xx HLSQ registers */
+ if (!a5xx_state->hlsqregs)
+ return;
+
+ drm_printf(p, "registers-hlsq:\n");
+
+ for (i = 0; i < ARRAY_SIZE(a5xx_hlsq_aperture_regs); i++) {
+ u32 o = a5xx_hlsq_aperture_regs[i].regoffset;
+ u32 c = a5xx_hlsq_aperture_regs[i].count;
+
+ for (j = 0; j < c; j++, pos++, o++) {
+ /*
+ * To keep the crashdump simple we pull the entire range
+ * for each register type but not all of the registers
+ * in the range are valid. Fortunately invalid registers
+ * stick out like a sore thumb with a value of
+ * 0xdeadbeef
+ */
+ if (a5xx_state->hlsqregs[pos] == 0xdeadbeef)
+ continue;
+
+ drm_printf(p, " - { offset: 0x%04x, value: 0x%08x }\n",
+ o << 2, a5xx_state->hlsqregs[pos]);
+ }
+ }
}
+#endif
static struct msm_ringbuffer *a5xx_active_ring(struct msm_gpu *gpu)
{
@@ -1244,14 +1454,14 @@ static const struct adreno_gpu_funcs funcs = {
.irq = a5xx_irq,
.destroy = a5xx_destroy,
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
- .show = adreno_show,
+ .show = a5xx_show,
#endif
#if defined(CONFIG_DEBUG_FS)
.debugfs_init = a5xx_debugfs_init,
#endif
.gpu_busy = a5xx_gpu_busy,
.gpu_state_get = a5xx_gpu_state_get,
- .gpu_state_put = adreno_gpu_state_put,
+ .gpu_state_put = a5xx_gpu_state_put,
},
.get_timestamp = a5xx_get_timestamp,
};
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 92acce377253..be81fe1f6a35 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -369,16 +369,11 @@ bool adreno_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
return false;
}
-struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu)
+int adreno_gpu_state_get(struct msm_gpu *gpu, struct msm_gpu_state *state)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
- struct msm_gpu_state *state;
int i, count = 0;
- state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (!state)
- return ERR_PTR(-ENOMEM);
-
kref_init(&state->ref);
do_gettimeofday(&state->time);
@@ -433,14 +428,12 @@ struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu)
state->nr_registers = count;
}
- return state;
+ return 0;
}
-static void adreno_gpu_state_destroy(struct kref *kref)
+void adreno_gpu_state_destroy(struct msm_gpu_state *state)
{
int i;
- struct msm_gpu_state *state = container_of(kref,
- struct msm_gpu_state, ref);
for (i = 0; i < ARRAY_SIZE(state->ring); i++)
kfree(state->ring[i].data);
@@ -448,6 +441,14 @@ static void adreno_gpu_state_destroy(struct kref *kref)
kfree(state->comm);
kfree(state->cmd);
kfree(state->registers);
+}
+
+static void adreno_gpu_state_kref_destroy(struct kref *kref)
+{
+ struct msm_gpu_state *state = container_of(kref,
+ struct msm_gpu_state, ref);
+
+ adreno_gpu_state_destroy(state);
kfree(state);
}
@@ -456,7 +457,7 @@ int adreno_gpu_state_put(struct msm_gpu_state *state)
if (IS_ERR_OR_NULL(state))
return 1;
- return kref_put(&state->ref, adreno_gpu_state_destroy);
+ return kref_put(&state->ref, adreno_gpu_state_kref_destroy);
}
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 4a868aaf1a70..4406776597fd 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -230,7 +230,9 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
void adreno_gpu_cleanup(struct adreno_gpu *gpu);
-struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu);
+void adreno_gpu_state_destroy(struct msm_gpu_state *state);
+
+int adreno_gpu_state_get(struct msm_gpu *gpu, struct msm_gpu_state *state);
int adreno_gpu_state_put(struct msm_gpu_state *state);
/* ringbuffer helpers (the parts that are adreno specific) */
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread
* [PATCH 13/13] drm/msm/gpu: Add the buffer objects from the submit to the crash dump
[not found] ` <20180712185930.2492-1-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
` (11 preceding siblings ...)
2018-07-12 18:59 ` [PATCH 12/13] drm/msm/adreno: Add a5xx specific registers for " Jordan Crouse
@ 2018-07-12 18:59 ` Jordan Crouse
12 siblings, 0 replies; 32+ messages in thread
From: Jordan Crouse @ 2018-07-12 18:59 UTC (permalink / raw)
To: freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
Cc: linux-arm-msm-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
For hangs, dump copy out the contents of the buffer objects attached to the
guilty submission and print them in the crash dump report.
v2: Use %zd to print the size of the buffer correctly
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
Documentation/gpu/drm-msm-crash-dump.txt | 7 +++
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 58 ++++++++++++++++++++----
drivers/gpu/drm/msm/msm_gpu.c | 48 ++++++++++++++++++--
drivers/gpu/drm/msm/msm_gpu.h | 9 ++++
4 files changed, 109 insertions(+), 13 deletions(-)
diff --git a/Documentation/gpu/drm-msm-crash-dump.txt b/Documentation/gpu/drm-msm-crash-dump.txt
index 7083075c6f87..b9804dd112db 100644
--- a/Documentation/gpu/drm-msm-crash-dump.txt
+++ b/Documentation/gpu/drm-msm-crash-dump.txt
@@ -40,6 +40,13 @@ bos: # List of buffers from the hanging submission (if known)
data: # [ascii85] The contents of the ring encoded as ascii85.
# Only the unused portions of the ring will be printed
# (up to a maximum of 'size' bytes)
+bos: # List of buffers from the hanging submission (if known)
+ -iova: # [hex] GPU address of the buffer
+ size: # [decimal] Size of the buffer (in bytes)
+ data: # [ascii85] The contents of the buffer encoded as
+ # ascii85. Only the contents of buffers marked as
+ # readable are dumped. Trailing zeros at the end of the
+ # buffer won't be dumped.
registers: # Sets of register values. This section can be used multiple
# times for different ranges of registers. Each register will be
# on its own line.
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index be81fe1f6a35..ce8b7af0a77d 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -438,6 +438,10 @@ void adreno_gpu_state_destroy(struct msm_gpu_state *state)
for (i = 0; i < ARRAY_SIZE(state->ring); i++)
kfree(state->ring[i].data);
+ for (i = 0; state->bos && i < state->nr_bos; i++)
+ kvfree(state->bos[i].data);
+
+ kfree(state->bos);
kfree(state->comm);
kfree(state->cmd);
kfree(state->registers);
@@ -461,6 +465,39 @@ int adreno_gpu_state_put(struct msm_gpu_state *state)
}
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
+
+static void adreno_show_object(struct drm_printer *p, u32 *ptr, int len)
+{
+ char out[ASCII85_BUFSZ];
+ long l, datalen, i;
+
+ if (!ptr || !len)
+ return;
+
+ /*
+ * Only dump the non-zero part of the buffer - rarely will any data
+ * completely fill the entire allocated size of the buffer
+ */
+ for (datalen = 0, i = 0; i < len >> 2; i++) {
+ if (ptr[i])
+ datalen = i << 2;
+ }
+
+ /* Skip printing the object if it is empty */
+ if (datalen == 0)
+ return;
+
+ l = ascii85_encode_len(datalen);
+
+ drm_puts(p, " data: !!ascii85 |\n");
+ drm_puts(p, " ");
+
+ for (i = 0; i < l; i++)
+ drm_puts(p, ascii85_encode(ptr[i], out));
+
+ drm_puts(p, "\n");
+}
+
void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
struct drm_printer *p)
{
@@ -487,19 +524,20 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
drm_printf(p, " wptr: %d\n", state->ring[i].wptr);
drm_printf(p, " size: %d\n", MSM_GPU_RINGBUFFER_SZ);
- if (state->ring[i].data && state->ring[i].data_size) {
- u32 *ptr = (u32 *) state->ring[i].data;
- char out[ASCII85_BUFSZ];
- long len = ascii85_encode_len(state->ring[i].data_size);
- int j;
+ adreno_show_object(p, state->ring[i].data,
+ state->ring[i].data_size);
+ }
- drm_printf(p, " data: !!ascii85 |\n");
- drm_printf(p, " ");
+ if (state->bos) {
+ drm_puts(p, "bos:\n");
- for (j = 0; j < len; j++)
- drm_printf(p, ascii85_encode(ptr[j], out));
+ for (i = 0; i < state->nr_bos; i++) {
+ drm_printf(p, " - iova: 0x%016llx\n",
+ state->bos[i].iova);
+ drm_printf(p, " size: %ld\n", state->bos[i].size);
- drm_printf(p, "\n");
+ adreno_show_object(p, state->bos[i].data,
+ state->bos[i].size);
}
}
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 1945736fc448..03e62f6ea2b6 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -318,8 +318,39 @@ static void msm_gpu_devcoredump_free(void *data)
msm_gpu_crashstate_put(gpu);
}
-static void msm_gpu_crashstate_capture(struct msm_gpu *gpu, char *comm,
- char *cmd)
+static void msm_gpu_crashstate_get_bo(struct msm_gpu_state *state,
+ struct msm_gem_object *obj, u64 iova, u32 flags)
+{
+ struct msm_gpu_state_bo *state_bo = &state->bos[state->nr_bos];
+
+ /* Don't record write only objects */
+
+ state_bo->size = obj->base.size;
+ state_bo->iova = iova;
+
+ /* Only store the data for buffer objects marked for read */
+ if ((flags & MSM_SUBMIT_BO_READ)) {
+ void *ptr;
+
+ state_bo->data = kvmalloc(obj->base.size, GFP_KERNEL);
+ if (!state_bo->data)
+ return;
+
+ ptr = msm_gem_get_vaddr_active(&obj->base);
+ if (IS_ERR(ptr)) {
+ kvfree(state_bo->data);
+ return;
+ }
+
+ memcpy(state_bo->data, ptr, obj->base.size);
+ msm_gem_put_vaddr(&obj->base);
+ }
+
+ state->nr_bos++;
+}
+
+static void msm_gpu_crashstate_capture(struct msm_gpu *gpu,
+ struct msm_gem_submit *submit, char *comm, char *cmd)
{
struct msm_gpu_state *state;
@@ -335,6 +366,17 @@ static void msm_gpu_crashstate_capture(struct msm_gpu *gpu, char *comm,
state->comm = kstrdup(comm, GFP_KERNEL);
state->cmd = kstrdup(cmd, GFP_KERNEL);
+ if (submit) {
+ int i;
+
+ state->bos = kcalloc(submit->nr_bos,
+ sizeof(struct msm_gpu_state_bo), GFP_KERNEL);
+
+ for (i = 0; state->bos && i < submit->nr_bos; i++)
+ msm_gpu_crashstate_get_bo(state, submit->bos[i].obj,
+ submit->bos[i].iova, submit->bos[i].flags);
+ }
+
/* Set the active crash state to be dumped on failure */
gpu->crashstate = state;
@@ -434,7 +476,7 @@ static void recover_worker(struct work_struct *work)
/* Record the crash state */
pm_runtime_get_sync(&gpu->pdev->dev);
- msm_gpu_crashstate_capture(gpu, comm, cmd);
+ msm_gpu_crashstate_capture(gpu, submit, comm, cmd);
pm_runtime_put_sync(&gpu->pdev->dev);
kfree(cmd);
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 48f7b21f1cae..8242c6e0f107 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -181,6 +181,12 @@ struct msm_gpu_submitqueue {
struct kref ref;
};
+struct msm_gpu_state_bo {
+ u64 iova;
+ size_t size;
+ void *data;
+};
+
struct msm_gpu_state {
struct kref ref;
struct timeval time;
@@ -201,6 +207,9 @@ struct msm_gpu_state {
char *comm;
char *cmd;
+
+ int nr_bos;
+ struct msm_gpu_state_bo *bos;
};
static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data)
--
2.17.1
_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno
^ permalink raw reply related [flat|nested] 32+ messages in thread