linux-rng/drivers/accel/habanalabs/common/command_buffer.c, branch master

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

accel/habanalabs: Move ioctls to the device specific ioctls range

2023-10-09T09:37:20Z

To use drm_ioctl(), move the ioctls to the device specific ioctls range at [DRM_COMMAND_BASE, DRM_COMMAND_END). Signed-off-by: Tomer Tayar Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

accel/habanalabs: remove support for mmu disable

2023-06-08T09:35:55Z

As mmu disable mode is only used for bring-up stages, let's remove this option and all code related to it. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

accel/habanalabs: unmap mapped memory when TLB inv fails

2023-04-08T07:39:33Z

Once a memory mapping is added to the page tables, it's followed by a TLB invalidation request which could potentially fail (HW failure). Removing the mapping is simply a part of this failure handling routine. TLB invalidation failure prints were updated to be more accurate. Signed-off-by: Koby Elbaz Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Reviewed-by: Stanislaw Gruszka

habanalabs: move some prints to debug level

2023-01-26T09:52:10Z

When entering an IOCTL, the driver prints a message in case device is not operational. This message should be printed in debug level as it can spam the kernel log and it is not an error. Signed-off-by: Oded Gabbay

habanalabs: verify that kernel CB is destroyed only once

2023-01-26T09:52:10Z

Remove the distinction between user CB and kernel CB, and verify for both that they are not destroyed more than once. As kernel CB might be taken from the pre-allocated CB pool, so we need to clear the handle destroyed indication when returning a CB to the pool. Signed-off-by: Tomer Tayar Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: move driver to accel subsystem

2023-01-26T09:52:10Z

Now that we have a subsystem for compute accelerators, move the habanalabs driver to it. This patch only moves the files and fixes the Makefiles. Future patches will change the existing code to register to the accel subsystem and expose the accel device char files instead of the habanalabs device char files. Update the MAINTAINERS file to reflect this change. Signed-off-by: Oded Gabbay