NVIDIA/open-gpu-kernel-modules
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This commit is contained in:
Andy Ritger
2024-09-20 12:40:39 -07:00
parent 2cca8b3fd5
commit 5e52edb203
93 changed files with 1186 additions and 712 deletions
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16
kernel-open/nvidia-uvm/uvm_gpu_access_counters.c
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@@ -684,7 +684,10 @@ static void access_counter_buffer_flush_locked(uvm_parent_gpu_t *parent_gpu,
while (get != put) {
// Wait until valid bit is set
UVM_SPIN_WHILE(!parent_gpu->access_counter_buffer_hal->entry_is_valid(parent_gpu, get), &spin);
UVM_SPIN_WHILE(!parent_gpu->access_counter_buffer_hal->entry_is_valid(parent_gpu, get), &spin) {
if (uvm_global_get_status() != NV_OK)
goto done;
}
parent_gpu->access_counter_buffer_hal->entry_clear_valid(parent_gpu, get);
++get;
@@ -692,6 +695,7 @@ static void access_counter_buffer_flush_locked(uvm_parent_gpu_t *parent_gpu,
get = 0;
}
done:
write_get(parent_gpu, get);
}
@@ -817,12 +821,18 @@ static NvU32 fetch_access_counter_buffer_entries(uvm_gpu_t *gpu,
(fetch_mode == NOTIFICATION_FETCH_MODE_ALL || notification_index < access_counters->max_batch_size)) {
uvm_access_counter_buffer_entry_t *current_entry = &notification_cache[notification_index];
// We cannot just wait for the last entry (the one pointed by put) to become valid, we have to do it
// individually since entries can be written out of order
// We cannot just wait for the last entry (the one pointed by put) to
// become valid, we have to do it individually since entries can be
// written out of order
UVM_SPIN_WHILE(!gpu->parent->access_counter_buffer_hal->entry_is_valid(gpu->parent, get), &spin) {
// We have some entry to work on. Let's do the rest later.
if (fetch_mode != NOTIFICATION_FETCH_MODE_ALL && notification_index > 0)
goto done;
// There's no entry to work on and something has gone wrong. Ignore
// the rest.
if (uvm_global_get_status() != NV_OK)
goto done;
}
// Prevent later accesses being moved above the read of the valid bit