percpu: cosmetic renames in pcpu_setup_first_chunk()
Impact: cosmetic, preparation for future changes
Make the following renames in pcpur_setup_first_chunk() in preparation
for future changes.
* s/free_size/dyn_size/
* s/static_vm/first_vm/
* s/static_chunk/schunk/
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/mm/percpu.c b/mm/percpu.c
index 3d0f545..9531590 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -831,7 +831,7 @@
* @get_page_fn: callback to fetch page pointer
* @static_size: the size of static percpu area in bytes
* @unit_size: unit size in bytes, must be multiple of PAGE_SIZE, 0 for auto
- * @free_size: free size in bytes, 0 for auto
+ * @dyn_size: free size for dynamic allocation in bytes, 0 for auto
* @base_addr: mapped address, NULL for auto
* @populate_pte_fn: callback to allocate pagetable, NULL if unnecessary
*
@@ -849,12 +849,12 @@
* return the same number of pages for all cpus.
*
* @unit_size, if non-zero, determines unit size and must be aligned
- * to PAGE_SIZE and equal to or larger than @static_size + @free_size.
+ * to PAGE_SIZE and equal to or larger than @static_size + @dyn_size.
*
- * @free_size determines the number of free bytes after the static
+ * @dyn_size determines the number of free bytes after the static
* area in the first chunk. If zero, whatever left is available.
* Specifying non-zero value make percpu leave the area after
- * @static_size + @free_size alone.
+ * @static_size + @dyn_size alone.
*
* Non-null @base_addr means that the caller already allocated virtual
* region for the first chunk and mapped it. percpu must not mess
@@ -870,19 +870,19 @@
*/
size_t __init pcpu_setup_first_chunk(pcpu_get_page_fn_t get_page_fn,
size_t static_size, size_t unit_size,
- size_t free_size, void *base_addr,
+ size_t dyn_size, void *base_addr,
pcpu_populate_pte_fn_t populate_pte_fn)
{
- static struct vm_struct static_vm;
- struct pcpu_chunk *static_chunk;
+ static struct vm_struct first_vm;
+ struct pcpu_chunk *schunk;
unsigned int cpu;
int nr_pages;
int err, i;
/* santiy checks */
BUG_ON(!static_size);
- BUG_ON(!unit_size && free_size);
- BUG_ON(unit_size && unit_size < static_size + free_size);
+ BUG_ON(!unit_size && dyn_size);
+ BUG_ON(unit_size && unit_size < static_size + dyn_size);
BUG_ON(unit_size & ~PAGE_MASK);
BUG_ON(base_addr && !unit_size);
BUG_ON(base_addr && populate_pte_fn);
@@ -908,24 +908,24 @@
for (i = 0; i < pcpu_nr_slots; i++)
INIT_LIST_HEAD(&pcpu_slot[i]);
- /* init static_chunk */
- static_chunk = alloc_bootmem(pcpu_chunk_struct_size);
- INIT_LIST_HEAD(&static_chunk->list);
- static_chunk->vm = &static_vm;
+ /* init static chunk */
+ schunk = alloc_bootmem(pcpu_chunk_struct_size);
+ INIT_LIST_HEAD(&schunk->list);
+ schunk->vm = &first_vm;
- if (free_size)
- static_chunk->free_size = free_size;
+ if (dyn_size)
+ schunk->free_size = dyn_size;
else
- static_chunk->free_size = pcpu_unit_size - pcpu_static_size;
+ schunk->free_size = pcpu_unit_size - pcpu_static_size;
- static_chunk->contig_hint = static_chunk->free_size;
+ schunk->contig_hint = schunk->free_size;
/* allocate vm address */
- static_vm.flags = VM_ALLOC;
- static_vm.size = pcpu_chunk_size;
+ first_vm.flags = VM_ALLOC;
+ first_vm.size = pcpu_chunk_size;
if (!base_addr)
- vm_area_register_early(&static_vm, PAGE_SIZE);
+ vm_area_register_early(&first_vm, PAGE_SIZE);
else {
/*
* Pages already mapped. No need to remap into
@@ -933,8 +933,8 @@
* be mapped or unmapped by percpu and is marked
* immutable.
*/
- static_vm.addr = base_addr;
- static_chunk->immutable = true;
+ first_vm.addr = base_addr;
+ schunk->immutable = true;
}
/* assign pages */
@@ -945,7 +945,7 @@
if (!page)
break;
- *pcpu_chunk_pagep(static_chunk, cpu, i) = page;
+ *pcpu_chunk_pagep(schunk, cpu, i) = page;
}
BUG_ON(i < PFN_UP(pcpu_static_size));
@@ -960,20 +960,20 @@
if (populate_pte_fn) {
for_each_possible_cpu(cpu)
for (i = 0; i < nr_pages; i++)
- populate_pte_fn(pcpu_chunk_addr(static_chunk,
+ populate_pte_fn(pcpu_chunk_addr(schunk,
cpu, i));
- err = pcpu_map(static_chunk, 0, nr_pages);
+ err = pcpu_map(schunk, 0, nr_pages);
if (err)
panic("failed to setup static percpu area, err=%d\n",
err);
}
- /* link static_chunk in */
- pcpu_chunk_relocate(static_chunk, -1);
- pcpu_chunk_addr_insert(static_chunk);
+ /* link the first chunk in */
+ pcpu_chunk_relocate(schunk, -1);
+ pcpu_chunk_addr_insert(schunk);
/* we're done */
- pcpu_base_addr = (void *)pcpu_chunk_addr(static_chunk, 0, 0);
+ pcpu_base_addr = (void *)pcpu_chunk_addr(schunk, 0, 0);
return pcpu_unit_size;
}