Quoting Tvrtko Ursulin (2017-09-28 07:53:56)
>
> On 25/09/2017 21:26, Chris Wilson wrote:
> > Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
> > ---
> > benchmarks/gem_busy.c | 73
> > ++++++++++++++++++++++++++++++++++++++++++++++++++-
> > 1 file changed, 72 insertions(+), 1 deletion(-)
> >
> > diff --git a/benchmarks/gem_busy.c b/benchmarks/gem_busy.c
> > index f050454b..9649ea02 100644
> > --- a/benchmarks/gem_busy.c
> > +++ b/benchmarks/gem_busy.c
> > @@ -58,6 +58,15 @@
> > #define DMABUF 0x4
> > #define WAIT 0x8
> > #define SYNC 0x10
> > +#define SYNCOBJ 0x20
> > +
> > +#define LOCAL_I915_EXEC_FENCE_ARRAY (1 << 19)
> > +struct local_gem_exec_fence {
> > + uint32_t handle;
> > + uint32_t flags;
> > +#define LOCAL_EXEC_FENCE_WAIT (1 << 0)
> > +#define LOCAL_EXEC_FENCE_SIGNAL (1 << 1)
> > +};
> >
> > static void gem_busy(int fd, uint32_t handle)
> > {
> > @@ -109,11 +118,54 @@ static int sync_merge(int fd1, int fd2)
> > return data.fence;
> > }
> >
> > +static uint32_t __syncobj_create(int fd)
> > +{
> > + struct local_syncobj_create {
> > + uint32_t handle, flags;
> > + } arg;
> > +#define LOCAL_IOCTL_SYNCOBJ_CREATE DRM_IOWR(0xBF, struct
> > local_syncobj_create)
> > +
> > + memset(&arg, 0, sizeof(arg));
> > + ioctl(fd, LOCAL_IOCTL_SYNCOBJ_CREATE, &arg);
> > +
> > + return arg.handle;
> > +}
> > +
> > +static uint32_t syncobj_create(int fd)
> > +{
> > + uint32_t ret;
> > +
> > + igt_assert_neq((ret = __syncobj_create(fd)), 0);
> > +
> > + return ret;
> > +}
> > +
> > +#define LOCAL_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0)
> > +#define LOCAL_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1)
> > +struct local_syncobj_wait {
> > + __u64 handles;
> > + /* absolute timeout */
> > + __s64 timeout_nsec;
> > + __u32 count_handles;
> > + __u32 flags;
> > + __u32 first_signaled; /* only valid when not waiting all */
> > + __u32 pad;
> > +};
> > +#define LOCAL_IOCTL_SYNCOBJ_WAIT DRM_IOWR(0xC3, struct
> > local_syncobj_wait)
> > +static int __syncobj_wait(int fd, struct local_syncobj_wait *args)
> > +{
> > + int err = 0;
> > + if (drmIoctl(fd, LOCAL_IOCTL_SYNCOBJ_WAIT, args))
> > + err = -errno;
> > + return err;
> > +}
> > +
> > static int loop(unsigned ring, int reps, int ncpus, unsigned flags)
> > {
> > struct drm_i915_gem_execbuffer2 execbuf;
> > struct drm_i915_gem_exec_object2 obj[2];
> > struct drm_i915_gem_relocation_entry reloc[2];
> > + struct local_gem_exec_fence syncobj;
> > unsigned engines[16];
> > unsigned nengine;
> > uint32_t *batch;
> > @@ -126,6 +178,11 @@ static int loop(unsigned ring, int reps, int ncpus,
> > unsigned flags)
> > fd = drm_open_driver(DRIVER_INTEL);
> > gen = intel_gen(intel_get_drm_devid(fd));
> >
> > + if (flags & SYNCOBJ) {
> > + syncobj.handle = syncobj_create(fd);
> > + syncobj.flags = LOCAL_EXEC_FENCE_SIGNAL;
> > + }
> > +
> > memset(obj, 0, sizeof(obj));
> > obj[0].handle = gem_create(fd, 4096);
> > if (flags & WRITE)
> > @@ -144,6 +201,8 @@ static int loop(unsigned ring, int reps, int ncpus,
> > unsigned flags)
> > execbuf.buffer_count = 2;
> > execbuf.flags |= LOCAL_I915_EXEC_HANDLE_LUT;
> > execbuf.flags |= LOCAL_I915_EXEC_NO_RELOC;
> > + if (flags & SYNCOBJ)
> > + execbuf.flags |= LOCAL_I915_EXEC_FENCE_ARRAY;
>
> According to the comment in i915_drm.h, when this is specified, syncobj
> should be also passed in in cliprects_ptr but that's not happening?
You want -b support as well! :)
-Chris
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