kselftests: dmabuf-heaps: Add extra checking that allocated buffers are zeroed

Add a check to validate that buffers allocated from the heaps
are properly zeroed before being given to userland.

It is done by allocating a number of buffers, and filling them
with a nonzero pattern, then closing and reallocating more
buffers and checking that they are all properly zeroed.

This is helpful to validate any cached buffers are zeroed
before being given back out.

Cc: Shuah Khan <[email protected]>
Cc: Brian Starkey <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Hridya Valsaraju <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Cc: Sandeep Patil <[email protected]>
Cc: Daniel Mentz <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>

0 files changed, 0 insertions, 0 deletions