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This commit is contained in:
Maneet Singh
2025-05-29 10:58:21 -07:00
parent e00332b05f
commit 30e15d79de
74 changed files with 798 additions and 417 deletions
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11
kernel-open/nvidia-uvm/uvm_lock.c
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@@ -27,7 +27,7 @@
const char *uvm_lock_order_to_string(uvm_lock_order_t lock_order)
{
BUILD_BUG_ON(UVM_LOCK_ORDER_COUNT != 37);
BUILD_BUG_ON(UVM_LOCK_ORDER_COUNT != 38);
switch (lock_order) {
UVM_ENUM_STRING_CASE(UVM_LOCK_ORDER_INVALID);
@@ -58,6 +58,7 @@ const char *uvm_lock_order_to_string(uvm_lock_order_t lock_order)
UVM_ENUM_STRING_CASE(UVM_LOCK_ORDER_PMM);
UVM_ENUM_STRING_CASE(UVM_LOCK_ORDER_PMM_PMA);
UVM_ENUM_STRING_CASE(UVM_LOCK_ORDER_PMM_ROOT_CHUNK);
UVM_ENUM_STRING_CASE(UVM_LOCK_ACCESS_COUNTERS_CLEAR_OPS);
UVM_ENUM_STRING_CASE(UVM_LOCK_ORDER_CHANNEL);
UVM_ENUM_STRING_CASE(UVM_LOCK_ORDER_WLC_CHANNEL);
UVM_ENUM_STRING_CASE(UVM_LOCK_ORDER_TOOLS_VA_SPACE_LIST);
@@ -352,15 +353,7 @@ bool __uvm_thread_check_all_unlocked(void)
NV_STATUS uvm_bit_locks_init(uvm_bit_locks_t *bit_locks, size_t count, uvm_lock_order_t lock_order)
{
// TODO: Bug 1772140: Notably bit locks currently do not work on memory
// allocated through vmalloc() (including big allocations created with
// uvm_kvmalloc()). The problem is the bit_waitqueue() helper used by the
// kernel internally that uses virt_to_page().
// To prevent us from using kmalloc() for a huge allocation, warn if the
// allocation size gets bigger than what we are comfortable with for
// kmalloc() in uvm_kvmalloc().
size_t size = sizeof(unsigned long) * BITS_TO_LONGS(count);
WARN_ON_ONCE(size > UVM_KMALLOC_THRESHOLD);
bit_locks->bits = kzalloc(size, NV_UVM_GFP_FLAGS);
if (!bit_locks->bits)