linux-stable.git/drivers/gpu/drm/amd/amdkfd/kfd_process.c, branch linux-4.6.y

drm/amdkfd: destroy dbgmgr in notifier release

2016-07-27T15:42:17+00:00

commit bc4755a4bd1845ef6e88ac8c62f12e05bb530256 upstream.

amdkfd need to destroy the debug manager in case amdkfd's notifier
function is called before the unbind function, because in that case,
the unbind function will exit without destroying debug manager.

Signed-off-by: Oded Gabbay 
Signed-off-by: Greg Kroah-Hartman

drm/amdkfd: unbind only existing processes

2016-07-27T15:42:17+00:00

commit 121b78e679ee3ffab780115e260b2775d0cc1f73 upstream.

When unbinding a process from a device (initiated by amd_iommu_v2), the
driver needs to make sure that process still exists in the process table.
There is a possibility that amdkfd's own notifier handler -
kfd_process_notifier_release() - was called before the unbind function
and it already removed the process from the process table.

v2:
Because there can be only one process with the specified pasid, and
because *p can't be NULL inside the hash_for_each_rcu macro, it is more
reasonable to just put the whole code inside the if statement that
compares the pasid value. That way, when we exit hash_for_each_rcu, we
simply exit the function as well.

Signed-off-by: Oded Gabbay 
Signed-off-by: Greg Kroah-Hartman

drivers/gpu/drm/amd/amdkfd: use in_compat_syscall to check open() caller type

2016-03-22T22:36:02+00:00

amdkfd wants to know syscall type, not task type.  Check directly.

Unfortunately, amdkfd is making nasty assumptions that a process'
bitness is a well-defined constant thing.  This isn't the case on x86.
I don't know how much this matters, but this patch has no effect on
generated code on x86, so amdkfd is equally broken with and without this
patch.

Signed-off-by: Andy Lutomirski 
Cc: Oded Gabbay 
Cc: David Airlie 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drm/amdkfd: Remove unnecessary cast in kfree

2016-01-28T12:40:11+00:00

Remove an unnecassary cast in the argument to kfree.

Found using Coccinelle. The semantic patch used to find this is as follows:

//
@@
type T;
expression *f;
@@

- kfree((T *)(f));
+ kfree(f);
//

Signed-off-by: Amitoj Kaur Chawla 
Signed-off-by: Oded Gabbay

drm/amdkfd: validate pdd where it acquired first

2015-07-09T10:27:52+00:00

Currently pdd is validate after dereferencing it, which is
not correct, Thus validate pdd before its first use.

Signed-off-by: Maninder Singh 
Signed-off-by: Oded Gabbay

drm/amdkfd: make reset wavefronts per process per device

2015-06-06T19:26:39+00:00

This commit moves the reset wavefront flag to per process per device
data structure, so we can support multiple devices.

Signed-off-by: Ben Goz 
Signed-off-by: Oded Gabbay

drm/amdkfd: Enforce kill all waves on process termination

2015-06-03T08:34:47+00:00

This commit makes sure that on process termination, after
we're destroying all the active queues, we're killing all the
existing wave front of the current process.

By doing this we're making sure that if any of the CUs were blocked
by infinite loop we're enforcing it to end the shader explicitly.

Signed-off-by: Ben Goz 
Signed-off-by: Oded Gabbay

drm/amdkfd: Add the events module

2015-05-19T10:02:26+00:00

This patch adds the events module (kfd_events.c) and the interrupt
handle module for Kaveri (cik_event_interrupt.c).

The patch updates the interrupt_is_wanted(), so that it now calls the
interrupt isr function specific for the device that received the
interrupt. That function(implemented in cik_event_interrupt.c)
returns whether this interrupt is of interest to us or not.

The patch also updates the interrupt_wq(), so that it now calls the
device's specific wq function, which checks the interrupt source
and tries to signal relevant events.

v2:

Increase limit of signal events to 4096 per process
Remove bitfields from struct cik_ih_ring_entry
Rename radeon_kfd_event_mmap to kfd_event_mmap
Add debug prints to allocate_free_slot and allocate_signal_page
Make allocate_event_notification_slot return a correct value
Add warning prints to create_signal_event
Remove error print from IOCTL path
Reformatted debug prints in kfd_event_mmap
Map correct size (as received from mmap) in kfd_event_mmap

v3:

Reduce limit of signal events back to 256 per process
Fix allocation of kernel memory for signal events

Signed-off-by: Andrew Lewycky 
Signed-off-by: Oded Gabbay

drm/amdkfd: Remove unessary void pointer cast

2015-05-19T09:13:38+00:00

kmalloc() returns a void pointer - no need to cast it in
drivers/gpu/drm/amd/amdkfd/kfd_process.c::kfd_process_destroy_delayed()

Signed-off-by: Firo Yang 
Signed-off-by: Oded Gabbay

drm/amdkfd: add debug prints for process teardown

2015-03-25T12:02:05+00:00

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