Merging upstream version 6.10.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 71 deletions

diff --git a/mm/percpu.c b/mm/percpu.c
index 4e11fc1e6d..474e3683b7 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1392,9 +1392,9 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr,
 		panic("%s: Failed to allocate %zu bytes\n", __func__,
 		      alloc_size);
 
-#ifdef CONFIG_MEMCG_KMEM
+#ifdef NEED_PCPUOBJ_EXT
 	/* first chunk is free to use */
-	chunk->obj_cgroups = NULL;
+	chunk->obj_exts = NULL;
 #endif
 	pcpu_init_md_blocks(chunk);
 
@@ -1463,12 +1463,12 @@ static struct pcpu_chunk *pcpu_alloc_chunk(gfp_t gfp)
 	if (!chunk->md_blocks)
 		goto md_blocks_fail;
 
-#ifdef CONFIG_MEMCG_KMEM
-	if (!mem_cgroup_kmem_disabled()) {
-		chunk->obj_cgroups =
+#ifdef NEED_PCPUOBJ_EXT
+	if (need_pcpuobj_ext()) {
+		chunk->obj_exts =
 			pcpu_mem_zalloc(pcpu_chunk_map_bits(chunk) *
-					sizeof(struct obj_cgroup *), gfp);
-		if (!chunk->obj_cgroups)
+					sizeof(struct pcpuobj_ext), gfp);
+		if (!chunk->obj_exts)
 			goto objcg_fail;
 	}
 #endif
@@ -1480,7 +1480,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(gfp_t gfp)
 
 	return chunk;
 
-#ifdef CONFIG_MEMCG_KMEM
+#ifdef NEED_PCPUOBJ_EXT
 objcg_fail:
 	pcpu_mem_free(chunk->md_blocks);
 #endif
@@ -1498,8 +1498,8 @@ static void pcpu_free_chunk(struct pcpu_chunk *chunk)
 {
 	if (!chunk)
 		return;
-#ifdef CONFIG_MEMCG_KMEM
-	pcpu_mem_free(chunk->obj_cgroups);
+#ifdef NEED_PCPUOBJ_EXT
+	pcpu_mem_free(chunk->obj_exts);
 #endif
 	pcpu_mem_free(chunk->md_blocks);
 	pcpu_mem_free(chunk->bound_map);
@@ -1646,9 +1646,9 @@ static void pcpu_memcg_post_alloc_hook(struct obj_cgroup *objcg,
 	if (!objcg)
 		return;
 
-	if (likely(chunk && chunk->obj_cgroups)) {
+	if (likely(chunk && chunk->obj_exts)) {
 		obj_cgroup_get(objcg);
-		chunk->obj_cgroups[off >> PCPU_MIN_ALLOC_SHIFT] = objcg;
+		chunk->obj_exts[off >> PCPU_MIN_ALLOC_SHIFT].cgroup = objcg;
 
 		rcu_read_lock();
 		mod_memcg_state(obj_cgroup_memcg(objcg), MEMCG_PERCPU_B,
@@ -1663,13 +1663,13 @@ static void pcpu_memcg_free_hook(struct pcpu_chunk *chunk, int off, size_t size)
 {
 	struct obj_cgroup *objcg;
 
-	if (unlikely(!chunk->obj_cgroups))
+	if (unlikely(!chunk->obj_exts))
 		return;
 
-	objcg = chunk->obj_cgroups[off >> PCPU_MIN_ALLOC_SHIFT];
+	objcg = chunk->obj_exts[off >> PCPU_MIN_ALLOC_SHIFT].cgroup;
 	if (!objcg)
 		return;
-	chunk->obj_cgroups[off >> PCPU_MIN_ALLOC_SHIFT] = NULL;
+	chunk->obj_exts[off >> PCPU_MIN_ALLOC_SHIFT].cgroup = NULL;
 
 	obj_cgroup_uncharge(objcg, pcpu_obj_full_size(size));
 
@@ -1699,6 +1699,32 @@ static void pcpu_memcg_free_hook(struct pcpu_chunk *chunk, int off, size_t size)
 }
 #endif /* CONFIG_MEMCG_KMEM */
 
+#ifdef CONFIG_MEM_ALLOC_PROFILING
+static void pcpu_alloc_tag_alloc_hook(struct pcpu_chunk *chunk, int off,
+				      size_t size)
+{
+	if (mem_alloc_profiling_enabled() && likely(chunk->obj_exts)) {
+		alloc_tag_add(&chunk->obj_exts[off >> PCPU_MIN_ALLOC_SHIFT].tag,
+			      current->alloc_tag, size);
+	}
+}
+
+static void pcpu_alloc_tag_free_hook(struct pcpu_chunk *chunk, int off, size_t size)
+{
+	if (mem_alloc_profiling_enabled() && likely(chunk->obj_exts))
+		alloc_tag_sub(&chunk->obj_exts[off >> PCPU_MIN_ALLOC_SHIFT].tag, size);
+}
+#else
+static void pcpu_alloc_tag_alloc_hook(struct pcpu_chunk *chunk, int off,
+				      size_t size)
+{
+}
+
+static void pcpu_alloc_tag_free_hook(struct pcpu_chunk *chunk, int off, size_t size)
+{
+}
+#endif
+
 /**
  * pcpu_alloc - the percpu allocator
  * @size: size of area to allocate in bytes
@@ -1714,7 +1740,7 @@ static void pcpu_memcg_free_hook(struct pcpu_chunk *chunk, int off, size_t size)
  * RETURNS:
  * Percpu pointer to the allocated area on success, NULL on failure.
  */
-static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
+void __percpu *pcpu_alloc_noprof(size_t size, size_t align, bool reserved,
 				 gfp_t gfp)
 {
 	gfp_t pcpu_gfp;
@@ -1881,6 +1907,8 @@ area_found:
 
 	pcpu_memcg_post_alloc_hook(objcg, chunk, off, size);
 
+	pcpu_alloc_tag_alloc_hook(chunk, off, size);
+
 	return ptr;
 
 fail_unlock:
@@ -1909,61 +1937,7 @@ fail:
 
 	return NULL;
 }
-
-/**
- * __alloc_percpu_gfp - allocate dynamic percpu area
- * @size: size of area to allocate in bytes
- * @align: alignment of area (max PAGE_SIZE)
- * @gfp: allocation flags
- *
- * Allocate zero-filled percpu area of @size bytes aligned at @align.  If
- * @gfp doesn't contain %GFP_KERNEL, the allocation doesn't block and can
- * be called from any context but is a lot more likely to fail. If @gfp
- * has __GFP_NOWARN then no warning will be triggered on invalid or failed
- * allocation requests.
- *
- * RETURNS:
- * Percpu pointer to the allocated area on success, NULL on failure.
- */
-void __percpu *__alloc_percpu_gfp(size_t size, size_t align, gfp_t gfp)
-{
-	return pcpu_alloc(size, align, false, gfp);
-}
-EXPORT_SYMBOL_GPL(__alloc_percpu_gfp);
-
-/**
- * __alloc_percpu - allocate dynamic percpu area
- * @size: size of area to allocate in bytes
- * @align: alignment of area (max PAGE_SIZE)
- *
- * Equivalent to __alloc_percpu_gfp(size, align, %GFP_KERNEL).
- */
-void __percpu *__alloc_percpu(size_t size, size_t align)
-{
-	return pcpu_alloc(size, align, false, GFP_KERNEL);
-}
-EXPORT_SYMBOL_GPL(__alloc_percpu);
-
-/**
- * __alloc_reserved_percpu - allocate reserved percpu area
- * @size: size of area to allocate in bytes
- * @align: alignment of area (max PAGE_SIZE)
- *
- * Allocate zero-filled percpu area of @size bytes aligned at @align
- * from reserved percpu area if arch has set it up; otherwise,
- * allocation is served from the same dynamic area.  Might sleep.
- * Might trigger writeouts.
- *
- * CONTEXT:
- * Does GFP_KERNEL allocation.
- *
- * RETURNS:
- * Percpu pointer to the allocated area on success, NULL on failure.
- */
-void __percpu *__alloc_reserved_percpu(size_t size, size_t align)
-{
-	return pcpu_alloc(size, align, true, GFP_KERNEL);
-}
+EXPORT_SYMBOL_GPL(pcpu_alloc_noprof);
 
 /**
  * pcpu_balance_free - manage the amount of free chunks
@@ -2302,6 +2276,8 @@ void free_percpu(void __percpu *ptr)
 	spin_lock_irqsave(&pcpu_lock, flags);
 	size = pcpu_free_area(chunk, off);
 
+	pcpu_alloc_tag_free_hook(chunk, off, size);
+
 	pcpu_memcg_free_hook(chunk, off, size);
 
 	/*