linux/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c, branch v3.19

drm/amdkfd: Don't create BUG due to incorrect user parameter

2015-02-02T07:45:24Z

This patch changes a BUG_ON() statement to pr_debug, in case the user tries to update a non-existing queue. Signed-off-by: Oded Gabbay Reviewed-by: Ben Goz Reviewed-by: Jammy Zhou Reviewed-by: Alex Deucher

drm/amdkfd: Allow user to limit only queues per device

2015-01-18T11:18:01Z

This patch replaces the two current amdkfd module parameters with a new one. The current parameters that are being replaced are: - Maximum number of HSA processes - Maximum number of queues per process The new parameter that replaces them is called "Maximum queues per device" This replacement achieves two goals: - Allows the user to have as many HSA processes as it wants (until a maximum of 512 HSA processes in Kaveri). - Removes the limitation the user had on maximum number of queues per HSA process. E.g. the user can now have processes which only have one queue and other processes which have hundreds of queues, while before the user couldn't have more than 128 queues per process (as default). The default value of the new parameter is 4096 (32 * 128, which were the defaults of the old parameters). There is almost no additional GART memory required for the default case. As a reminder, this amount of queues requires a little bit below 4MB of GART memory. v2: In addition, This patch defines a new counter for queues accounting in the DQM structure. This is done because the current counter only counts active queues which allows the user to create more queues than the max_num_of_queues_per_device module parameter allows. However, we need the current counter for the runlist packet build process, so the solution is to have a dedicated counter for this accounting. Signed-off-by: Oded Gabbay Reviewed-by: Ben Goz

drm/amdkfd: PQM handle queue creation fault

2015-01-15T15:14:47Z

If the first queue created was failed on DQM then PQM should unregister the process from DQM. Signed-off-by: Ben Goz Signed-off-by: Oded Gabbay

amdkfd: fix an error handling bug in pqm_create_queue()

2014-11-25T10:24:51Z

The call to kernel_queue_uninit(NULL) will trigger a BUG(), and also the error code is incorrect. Fixes: 45102048f77e ('amdkfd: Add process queue manager module') Reviewed-by: Oded Gabbay Signed-off-by: Dan Carpenter Signed-off-by: Oded Gabbay

amdkfd: pqm_get_kernel_queue() can be static

2014-11-20T09:16:23Z

Reviewed-by: Alex Deucher Signed-off-by: Fengguang Wu Signed-off-by: Oded Gabbay

amdkfd: Add process queue manager module

2014-07-16T22:04:10Z

The queue scheduler divides into two sections, one section is process bounded and the other section is device bounded. The process bounded section is handled by this module. The PQM handles usermode queue setup, updates and tear-down. v3: Used kernel parameter to limit queues per process instead of define Added use of doorbell address from user v4: Modified pqm_create_queue so that only when creating usermode queues the driver should return the queue properties to the userspace. Added an info message print when no more queues can be opened because of the queue per process limitation v5: Move amdkfd from drm/radeon/ to drm/amd/ Various fixes Signed-off-by: Ben Goz Signed-off-by: Oded Gabbay