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benchmark/gem_exec_tracer: Tweak to handle SNA

Browse Source 
SNA starts by feeding in deliberately bad ioctls in order to detect the
kernel interface versions. A quick solution is to always feed it to the
ioctl and only record the trace if it is valid.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-08-14 20:31:48 +01:00
parent 78120d8158
commit a64e6c39b1
1 changed files with 85 additions and 68 deletions
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153
benchmarks/gem_exec_tracer.c
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@ -170,6 +170,35 @@ close(int fd)
return libc_close(fd);
}
static unsigned long
size_for_fb(const struct drm_mode_fb_cmd *cmd)
{
unsigned long size;
#ifndef ALIGN
#define ALIGN(x, y) (((x) + (y) - 1) & -(y))
#endif
size = ALIGN(cmd->width * cmd->bpp, 64);
size *= cmd->height;
return ALIGN(size, 4096);
}
static int is_i915(int fd)
{
drm_version_t version;
char name[5] = "";
memset(&version, 0, sizeof(version));
version.name_len = 4;
version.name = name;
if (libc_ioctl(fd, DRM_IOCTL_VERSION, &version))
return 0;
return strcmp(name, "i915") == 0;
}
int
ioctl(int fd, unsigned long request, ...)
{
@ -181,84 +210,72 @@ ioctl(int fd, unsigned long request, ...)
argp = va_arg(args, void *);
va_end(args);
if (_IOC_TYPE(request) == DRM_IOCTL_BASE && drm_fd != fd) {
ret = libc_ioctl(fd, request, argp);
if (ret)
return ret;
if (_IOC_TYPE(request) != DRM_IOCTL_BASE)
return 0;
if (drm_fd != fd) {
char filename[80];
if (!is_i915(fd))
return 0;
if (file)
fclose(file);
sprintf(filename, "/tmp/trace.%d", fd);
file = fopen(filename, "w+");
drm_fd = fd;
}
if (fd == drm_fd) {
switch (request) {
case DRM_IOCTL_I915_GEM_EXECBUFFER: {
return libc_ioctl(fd, request, argp);
}
switch (request) {
case DRM_IOCTL_I915_GEM_EXECBUFFER2:
trace_exec(fd, argp);
break;
case DRM_IOCTL_I915_GEM_EXECBUFFER2: {
trace_exec(fd, argp);
return libc_ioctl(fd, request, argp);
}
case DRM_IOCTL_I915_GEM_CREATE: {
struct drm_i915_gem_create *create = argp;
ret = libc_ioctl(fd, request, argp);
if (ret == 0)
trace_add(create->handle, create->size);
return ret;
}
case DRM_IOCTL_I915_GEM_USERPTR: {
struct drm_i915_gem_userptr *userptr = argp;
ret = libc_ioctl(fd, request, argp);
if (ret == 0)
trace_add(userptr->handle, userptr->user_size);
return ret;
}
case DRM_IOCTL_GEM_CLOSE: {
struct drm_gem_close *close = argp;
trace_del(close->handle);
return libc_ioctl(fd, request, argp);
}
case DRM_IOCTL_GEM_OPEN: {
struct drm_gem_open *open = argp;
ret = libc_ioctl(fd, request, argp);
if (ret == 0)
trace_add(open->handle, open->size);
return ret;
}
case DRM_IOCTL_PRIME_FD_TO_HANDLE: {
struct drm_prime_handle *prime = argp;
ret = libc_ioctl(fd, request, argp);
if (ret == 0) {
off_t size;
size = lseek(prime->fd, 0, SEEK_END);
fail_if(size == -1, "failed to get prime bo size\n");
trace_add(prime->handle, size);
}
return ret;
}
default:
return libc_ioctl(fd, request, argp);
}
} else {
return libc_ioctl(fd, request, argp);
case DRM_IOCTL_I915_GEM_CREATE: {
struct drm_i915_gem_create *create = argp;
trace_add(create->handle, create->size);
break;
}
case DRM_IOCTL_I915_GEM_USERPTR: {
struct drm_i915_gem_userptr *userptr = argp;
trace_add(userptr->handle, userptr->user_size);
break;
}
case DRM_IOCTL_GEM_CLOSE: {
struct drm_gem_close *close = argp;
trace_del(close->handle);
break;
}
case DRM_IOCTL_GEM_OPEN: {
struct drm_gem_open *open = argp;
trace_add(open->handle, open->size);
break;
}
case DRM_IOCTL_PRIME_FD_TO_HANDLE: {
struct drm_prime_handle *prime = argp;
off_t size = lseek(prime->fd, 0, SEEK_END);
fail_if(size == -1, "failed to get prime bo size\n");
trace_add(prime->handle, size);
break;
}
case DRM_IOCTL_MODE_GETFB: {
struct drm_mode_fb_cmd *cmd = argp;
trace_add(cmd->handle, size_for_fb(cmd));
break;
}
}
return 0;
}
static void __attribute__ ((constructor))