The debugger subscibes to nofication for requested exceptions on attach.
Allow the debugger to change its subsciption later on.
Signed-off-by: Jonathan Kim <jonathan.kim@xxxxxxx>
Reviewed-by: Felix Kuehling <felix.kuehling@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 3 ++
drivers/gpu/drm/amd/amdkfd/kfd_debug.c | 36 ++++++++++++++++++++++++
drivers/gpu/drm/amd/amdkfd/kfd_debug.h | 2 ++
3 files changed, 41 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 73cb5abce431..80d354eade35 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -2980,6 +2980,9 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v
args->send_runtime_event.exception_mask);
break;
case KFD_IOC_DBG_TRAP_SET_EXCEPTIONS_ENABLED:
+ kfd_dbg_set_enabled_debug_exception_mask(target,
+ args->set_exceptions_enabled.exception_mask);
+ break;
case KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_OVERRIDE:
case KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_MODE:
case KFD_IOC_DBG_TRAP_SUSPEND_QUEUES:
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
index 68b657398d41..48a4e3cc2234 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
@@ -521,3 +521,39 @@ int kfd_dbg_trap_enable(struct kfd_process *target, uint32_t fd,
return r;
}
+
+void kfd_dbg_set_enabled_debug_exception_mask(struct kfd_process *target,
+ uint64_t exception_set_mask)
+{
+ uint64_t found_mask = 0;
+ struct process_queue_manager *pqm;
+ struct process_queue_node *pqn;
+ static const char write_data = '.';
+ loff_t pos = 0;
+ int i;
+
+ mutex_lock(&target->event_mutex);
+
+ found_mask |= target->exception_status;
+
+ pqm = &target->pqm;
+ list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
+ if (!pqn)
+ continue;
+
+ found_mask |= pqn->q->properties.exception_status;
+ }
+
+ for (i = 0; i < target->n_pdds; i++) {
+ struct kfd_process_device *pdd = target->pdds[i];
+
+ found_mask |= pdd->exception_status;
+ }
+
+ if (exception_set_mask & found_mask)
+ kernel_write(target->dbg_ev_file, &write_data, 1, &pos);
+
+ target->exception_enable_mask = exception_set_mask;
+
+ mutex_unlock(&target->event_mutex);
+}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
index 5153ccbd7fd1..6c1054a08872 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
@@ -56,6 +56,8 @@ static inline bool kfd_dbg_is_per_vmid_supported(struct kfd_node *dev)
void debug_event_write_work_handler(struct work_struct *work);
+void kfd_dbg_set_enabled_debug_exception_mask(struct kfd_process *target,
+ uint64_t exception_set_mask);
/*
* If GFX off is enabled, chips that do not support RLC restore for the debug
* registers will disable GFX off temporarily for the entire debug session.
--
2.25.1
