UPSTREAM: dma-buf: add DMA_BUF_SET_NAME ioctls
This patch adds complimentary DMA_BUF_SET_NAME ioctls, which lets userspace processes attach a free-form name to each buffer. This information can be extremely helpful for tracking and accounting shared buffers. For example, on Android, we know what each buffer will be used for at allocation time: GL, multimedia, camera, etc. The userspace allocator can use DMA_BUF_SET_NAME to associate that information with the buffer, so we can later give developers a breakdown of how much memory they're allocating for graphics, camera, etc. Signed-off-by:Greg Hackmann <ghackmann@google.com> Signed-off-by:
Chenbo Feng <fengc@google.com> Signed-off-by:
Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190613223408.139221-3-fengc@google.com (cherry picked from commit bb2bb903042517b8fb17b2bc21e00512f2dcac01) Bug: 135613055 Test: run dmabufinfo_test.cpp and check the name is showed up in /proc/pid/fd Change-Id: Ib7f227b5e730c7ecfade14ad596ba3889eab1b0b
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