Re: [Mesa-dev] [PATCH shader-db 4/4] add special script to run on intel hardware

[Matt Turner]

On Thu, Feb 16, 2017 at 4:29 AM, Lionel Landwerlin
 wrote:
> Intel produces fairly beefy Xeon servers on which it would be nice to be
> able to run shader-db to get some results pretty fast. Unfortunately those
> don't ship with any intel graphics IP (only ancient Matrox cards).
>
> This new script stubs a bunch of ioctls so that we can run shader-db on
> hardware that doesn't have a /dev/dri/renderD128.
>
> Example :
>
>./intel_run -j70 -pskl -oi965 shaders

This is awesome. Thanks a ton for building this.

>
> Signed-off-by: Lionel Landwerlin 
> ---
>  Makefile |  10 ++-
>  intel_run|   5 ++
>  intel_stub.c | 237 
> +++
>  3 files changed, 251 insertions(+), 1 deletion(-)
>  create mode 100755 intel_run
>  create mode 100644 intel_stub.c
>
> diff --git a/Makefile b/Makefile
> index 9422b32..52a764f 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -23,7 +23,15 @@ CFLAGS ?= -g -O2 -march=native -pipe
>  CFLAGS += -std=gnu99 -fopenmp
>  LDLIBS = -lepoxy -lgbm
>
> +INTEL_STUB_CFLAGS = -g -fPIC -shared -Wall `pkg-config libdrm_intel --cflags`
> +INTEL_STUB_LIBS = -ldl
> +
> +all: intel_stub.so run
> +
> +intel_stub.so: intel_stub.c
> +   gcc $(INTEL_STUB_CFLAGS) $< -o $@ $(INTEL_STUB_LIBS)

$(CC) instead of gcc.

Feel free to commit the lot!
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[Mesa-dev] [PATCH shader-db 4/4] add special script to run on intel hardware

[Lionel Landwerlin]

Intel produces fairly beefy Xeon servers on which it would be nice to be
able to run shader-db to get some results pretty fast. Unfortunately those
don't ship with any intel graphics IP (only ancient Matrox cards).

This new script stubs a bunch of ioctls so that we can run shader-db on
hardware that doesn't have a /dev/dri/renderD128.

Example :

   ./intel_run -j70 -pskl -oi965 shaders

Signed-off-by: Lionel Landwerlin 
---
 Makefile |  10 ++-
 intel_run|   5 ++
 intel_stub.c | 237 +++
 3 files changed, 251 insertions(+), 1 deletion(-)
 create mode 100755 intel_run
 create mode 100644 intel_stub.c

diff --git a/Makefile b/Makefile
index 9422b32..52a764f 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,15 @@ CFLAGS ?= -g -O2 -march=native -pipe
 CFLAGS += -std=gnu99 -fopenmp
 LDLIBS = -lepoxy -lgbm
 
+INTEL_STUB_CFLAGS = -g -fPIC -shared -Wall `pkg-config libdrm_intel --cflags`
+INTEL_STUB_LIBS = -ldl
+
+all: intel_stub.so run
+
+intel_stub.so: intel_stub.c
+   gcc $(INTEL_STUB_CFLAGS) $< -o $@ $(INTEL_STUB_LIBS)
+
 run:
 
 clean:
-   rm -f run
+   rm -f intel_stub.so run
diff --git a/intel_run b/intel_run
new file mode 100755
index 000..10114ff
--- /dev/null
+++ b/intel_run
@@ -0,0 +1,5 @@
+#!/bin/bash
+# -*- mode: sh -*-
+
+LD_PRELOAD=${PWD}/intel_stub.so${LD_PPRELOAD:+:${LD_PRELOAD}} \
+ exec ./run $@
diff --git a/intel_stub.c b/intel_stub.c
new file mode 100644
index 000..4917656
--- /dev/null
+++ b/intel_stub.c
@@ -0,0 +1,237 @@
+/*
+ * Copyright © 2015-2017 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#define _GNU_SOURCE /* for RTLD_NEXT */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+
+static void *(*libc_mmap)(void *addr, size_t len, int prot, int flags,
+  int fildes, off_t off);
+static int (*libc_open)(const char *pathname, int flags, mode_t mode);
+static int (*libc_close)(int fd);
+static int (*libc_ioctl)(int fd, unsigned long request, void *argp);
+static int (*libc_fstat)(int fd, struct stat *buf);
+static int (*libc__fxstat)(int ver, int fd, struct stat *buf);
+static int (*libc_fcntl)(int fd, int cmd, int param);
+static ssize_t (*libc_readlink)(const char *pathname, char *buf, size_t 
bufsiz);
+
+static int drm_fd = 0xBEEF;
+
+#define DRM_MAJOR 226
+
+#define SYSFS_PATH "/sys/dev/char/226:0/device/subsystem"
+
+static int
+dispatch_version(int fd, unsigned long request,
+ struct drm_version *version)
+{
+   static const char name[] = "i915";
+   static const char date[] = "20160919";
+   static const char desc[] = "Intel Graphics";
+
+   version->version_major = 1;
+   version->version_minor = 6;
+   version->version_patchlevel = 0;
+
+   if (version->name)
+   strncpy(version->name, name, version->name_len);
+   version->name_len = strlen(name);
+   if (version->date)
+   strncpy(version->date, date, version->date_len);
+   version->date_len = strlen(date);
+   if (version->desc)
+   strncpy(version->desc, desc, version->desc_len);
+   version->desc_len = strlen(desc);
+
+   return 0;
+}
+
+__attribute__ ((visibility ("default"))) int
+open(const char *path, int flags, ...)
+{
+   va_list args;
+   mode_t mode;
+
+   if (strcmp(path, "/dev/dri/renderD128") == 0)
+  return drm_fd;
+
+   va_start(args, flags);
+   mode = va_arg(args, int);
+   va_end(args);
+
+   return libc_open(path, flags, mode);
+}
+
+__attribute__ ((visibility ("default"))) int
+close(int fd)
+{
+   if (fd == drm_fd)
+   return 0;
+
+   return libc_close(fd);
+}
+
+__attribute__ ((visibility ("default"))) int
+fstat(int fd, struct stat