Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index c8fa1d2..3a4da11 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -27,7 +27,6 @@
#include <linux/string.h>
#include <linux/xarray.h>
-
/*
* Radix tree node cache.
*/
@@ -56,22 +55,12 @@
#define IDR_PRELOAD_SIZE (IDR_MAX_PATH * 2 - 1)
/*
- * The IDA is even shorter since it uses a bitmap at the last level.
- */
-#define IDA_INDEX_BITS (8 * sizeof(int) - 1 - ilog2(IDA_BITMAP_BITS))
-#define IDA_MAX_PATH (DIV_ROUND_UP(IDA_INDEX_BITS, \
- RADIX_TREE_MAP_SHIFT))
-#define IDA_PRELOAD_SIZE (IDA_MAX_PATH * 2 - 1)
-
-/*
* Per-cpu pool of preloaded nodes
*/
-struct radix_tree_preload {
- unsigned nr;
- /* nodes->parent points to next preallocated node */
- struct radix_tree_node *nodes;
+DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = {
+ .lock = INIT_LOCAL_LOCK(lock),
};
-static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { 0, };
+EXPORT_PER_CPU_SYMBOL_GPL(radix_tree_preloads);
static inline struct radix_tree_node *entry_to_node(void *ptr)
{
@@ -335,19 +324,19 @@
int ret = -ENOMEM;
/*
- * Nodes preloaded by one cgroup can be be used by another cgroup, so
+ * Nodes preloaded by one cgroup can be used by another cgroup, so
* they should never be accounted to any particular memory cgroup.
*/
gfp_mask &= ~__GFP_ACCOUNT;
- preempt_disable();
+ local_lock(&radix_tree_preloads.lock);
rtp = this_cpu_ptr(&radix_tree_preloads);
while (rtp->nr < nr) {
- preempt_enable();
+ local_unlock(&radix_tree_preloads.lock);
node = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask);
if (node == NULL)
goto out;
- preempt_disable();
+ local_lock(&radix_tree_preloads.lock);
rtp = this_cpu_ptr(&radix_tree_preloads);
if (rtp->nr < nr) {
node->parent = rtp->nodes;
@@ -389,7 +378,7 @@
if (gfpflags_allow_blocking(gfp_mask))
return __radix_tree_preload(gfp_mask, RADIX_TREE_PRELOAD_SIZE);
/* Preloading doesn't help anything with this gfp mask, skip it */
- preempt_disable();
+ local_lock(&radix_tree_preloads.lock);
return 0;
}
EXPORT_SYMBOL(radix_tree_maybe_preload);
@@ -1039,7 +1028,7 @@
{
struct radix_tree_node *node, *parent;
unsigned long maxindex;
- int uninitialized_var(offset);
+ int offset;
radix_tree_load_root(root, &node, &maxindex);
if (index > maxindex)
@@ -1478,7 +1467,7 @@
void idr_preload(gfp_t gfp_mask)
{
if (__radix_tree_preload(gfp_mask, IDR_PRELOAD_SIZE))
- preempt_disable();
+ local_lock(&radix_tree_preloads.lock);
}
EXPORT_SYMBOL(idr_preload);