On Wed, 2013-04-17 at 19:06 +0200, Daniel Vetter wrote:
> On Wed, Apr 17, 2013 at 07:10:00PM +0300, Imre Deak wrote:
> > Signed-off-by: Imre Deak <imre.deak at intel.com>
>
> I'm a bit confused what this does ... can you please elaborate?
It creates a second GEM buffer on fd1, exports it, imports it on fd2 and
check if the imported buffer contents matches the original one.
--Imre
> -Daniel
>
> > ---
> > tests/prime_self_import.c | 33 ++++++++++++++++++++++-----------
> > 1 file changed, 22 insertions(+), 11 deletions(-)
> >
> > diff --git a/tests/prime_self_import.c b/tests/prime_self_import.c
> > index 111ed4d..a17e942 100644
> > --- a/tests/prime_self_import.c
> > +++ b/tests/prime_self_import.c
> > @@ -48,11 +48,13 @@
> >
> > #define BO_SIZE (16*1024)
> >
> > +static char counter1;
> > +static char counter2;
> > +
> > static void
> > -check_bo(int fd1, uint32_t handle1, int fd2, uint32_t handle2)
> > +check_bo(int fd1, uint32_t handle1, int fd2, uint32_t handle2, char *counter)
> > {
> > char *ptr1, *ptr2;
> > - static char counter = 0;
> > int i;
> >
> > ptr1 = gem_mmap(fd1, handle1, BO_SIZE, PROT_READ | PROT_WRITE);
> > @@ -62,13 +64,13 @@ check_bo(int fd1, uint32_t handle1, int fd2, uint32_t handle2)
> >
> > /* check whether it's still our old object first. */
> > for (i = 0; i < BO_SIZE; i++) {
> > - assert(ptr1[i] == counter);
> > - assert(ptr2[i] == counter);
> > + assert(ptr1[i] == *counter);
> > + assert(ptr2[i] == *counter);
> > }
> >
> > - counter++;
> > + (*counter)++;
> >
> > - memset(ptr1, counter, BO_SIZE);
> > + memset(ptr1, *counter, BO_SIZE);
> > assert(memcmp(ptr1, ptr2, BO_SIZE) == 0);
> >
> > munmap(ptr1, BO_SIZE);
> > @@ -79,17 +81,19 @@ int main(int argc, char **argv)
> > {
> > int fd1, fd2;
> > uint32_t handle, handle_import1, handle_import2, handle_selfimport;
> > + uint32_t handle2;
> > int dma_buf_fd;
> >
> > fd1 = drm_open_any();
> > fd2 = drm_open_any();
> >
> > handle = gem_create(fd1, BO_SIZE);
> > + handle2 = gem_create(fd1, BO_SIZE);
> >
> > dma_buf_fd = prime_handle_to_fd(fd1, handle);
> > handle_import1 = prime_fd_to_handle(fd2, dma_buf_fd);
> >
> > - check_bo(fd1, handle, fd2, handle_import1);
> > + check_bo(fd1, handle, fd2, handle_import1, &counter1);
> >
> > /* reimport should give us the same handle so that userspace can check
> > * whether it has that bo already somewhere. */
> > @@ -102,10 +106,17 @@ int main(int argc, char **argv)
> >
> > /* close dma_buf, check whether nothing disappears. */
> > close(dma_buf_fd);
> > - check_bo(fd1, handle, fd2, handle_import1);
> > + check_bo(fd1, handle, fd2, handle_import1, &counter1);
> >
> > gem_close(fd1, handle);
> > - check_bo(fd2, handle_import1, fd2, handle_import1);
> > + check_bo(fd2, handle_import1, fd2, handle_import1, &counter1);
> > +
> > + dma_buf_fd = prime_handle_to_fd(fd1, handle2);
> > + handle = prime_fd_to_handle(fd2, dma_buf_fd);
> > + check_bo(fd1, handle2, fd2, handle, &counter2);
> > + gem_close(fd2, handle);
> > + gem_close(fd1, handle2);
> > + close(dma_buf_fd);
> >
> > /* re-import into old exporter */
> > dma_buf_fd = prime_handle_to_fd(fd2, handle_import1);
> > @@ -113,11 +124,11 @@ int main(int argc, char **argv)
> > gem_close(fd2, handle_import1);
> > handle = prime_fd_to_handle(fd1, dma_buf_fd);
> > handle_import1 = prime_fd_to_handle(fd2, dma_buf_fd);
> > - check_bo(fd1, handle, fd2, handle_import1);
> > + check_bo(fd1, handle, fd2, handle_import1, &counter1);
> >
> > /* Completely rip out exporting fd. */
> > close(fd1);
> > - check_bo(fd2, handle_import1, fd2, handle_import1);
> > + check_bo(fd2, handle_import1, fd2, handle_import1, &counter1);
> >
> > return 0;
> > }
> > --
> > 1.7.10.4
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
