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mm: percpu: add pcpu_fc_cpu_to_node_fn_t typedef 

Add pcpu_fc_cpu_to_node_fn_t and pass it into pcpu_fc_alloc_fn_t, pcpu
first chunk allocation will call it to alloc memblock on the
corresponding node by it, this is prepare for the next patch.

Link: https://lkml.kernel.org/r/20211216112359.103822-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kefeng Wang 2022-01-19 18:07:45 -08:00 committed by Linus Torvalds
parent 7ecd19cfdf
commit 1ca3fb3abd
7 changed files with 62 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/mips/mm/init.c
View File

@ -519,12 +519,17 @@ static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
return node_distance(cpu_to_node(from), cpu_to_node(to));
}
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size,
size_t align)
static int __init pcpu_cpu_to_node(int cpu)
{
return cpu_to_node(cpu);
}
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size, size_t align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
return memblock_alloc_try_nid(size, align, __pa(MAX_DMA_ADDRESS),
MEMBLOCK_ALLOC_ACCESSIBLE,
cpu_to_node(cpu));
cpu_to_nd_fn(cpu));
}
static void __init pcpu_fc_free(void *ptr, size_t size)
@ -545,6 +550,7 @@ void __init setup_per_cpu_areas(void)
rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE,
PERCPU_DYNAMIC_RESERVE, PAGE_SIZE,
pcpu_cpu_distance,
pcpu_cpu_to_node,
pcpu_fc_alloc, pcpu_fc_free);
if (rc < 0)
panic("Failed to initialize percpu areas.");

15
arch/powerpc/kernel/setup_64.c
View File

@ -784,12 +784,12 @@ void __init emergency_stack_init(void)
* RETURNS:
* Pointer to the allocated area on success, NULL on failure.
*/
static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size,
size_t align)
static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size, size_t align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
const unsigned long goal = __pa(MAX_DMA_ADDRESS);
#ifdef CONFIG_NUMA
int node = early_cpu_to_node(cpu);
int node = cpu_to_nd_fun(cpu);
void *ptr;
if (!node_online(node) || !NODE_DATA(node)) {
@ -823,6 +823,11 @@ static int pcpu_cpu_distance(unsigned int from, unsigned int to)
return REMOTE_DISTANCE;
}
static __init int pcpu_cpu_to_node(int cpu)
{
return early_cpu_to_node(cpu);
}
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
EXPORT_SYMBOL(__per_cpu_offset);
@ -891,6 +896,7 @@ void __init setup_per_cpu_areas(void)
if (pcpu_chosen_fc != PCPU_FC_PAGE) {
rc = pcpu_embed_first_chunk(0, dyn_size, atom_size, pcpu_cpu_distance,
pcpu_cpu_to_node,
pcpu_alloc_bootmem, pcpu_free_bootmem);
if (rc)
pr_warn("PERCPU: %s allocator failed (%d), "
@ -899,7 +905,8 @@ void __init setup_per_cpu_areas(void)
}
if (rc < 0)
rc = pcpu_page_first_chunk(0, pcpu_alloc_bootmem, pcpu_free_bootmem,
rc = pcpu_page_first_chunk(0, pcpu_cpu_to_node,
pcpu_alloc_bootmem, pcpu_free_bootmem,
pcpu_populate_pte);
if (rc < 0)
panic("cannot initialize percpu area (err=%d)", rc);

13
arch/sparc/kernel/smp_64.c
View File

@ -1539,12 +1539,12 @@ void smp_send_stop(void)
* RETURNS:
* Pointer to the allocated area on success, NULL on failure.
*/
static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size,
size_t align)
static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size, size_t align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
const unsigned long goal = __pa(MAX_DMA_ADDRESS);
#ifdef CONFIG_NUMA
int node = cpu_to_node(cpu);
int node = cpu_to_nd_fn(cpu);
void *ptr;
if (!node_online(node) || !NODE_DATA(node)) {
@ -1578,6 +1578,11 @@ static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
return REMOTE_DISTANCE;
}
static int __init pcpu_cpu_to_node(int cpu)
{
return cpu_to_node(cpu);
}
static void __init pcpu_populate_pte(unsigned long addr)
{
pgd_t *pgd = pgd_offset_k(addr);
@ -1641,6 +1646,7 @@ void __init setup_per_cpu_areas(void)
rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE,
PERCPU_DYNAMIC_RESERVE, 4 << 20,
pcpu_cpu_distance,
pcpu_cpu_to_node,
pcpu_alloc_bootmem,
pcpu_free_bootmem);
if (rc)
@ -1650,6 +1656,7 @@ void __init setup_per_cpu_areas(void)
}
if (rc < 0)
rc = pcpu_page_first_chunk(PERCPU_MODULE_RESERVE,
pcpu_cpu_to_node,
pcpu_alloc_bootmem,
pcpu_free_bootmem,
pcpu_populate_pte);

18
arch/x86/kernel/setup_percpu.c
View File

@ -97,12 +97,12 @@ static bool __init pcpu_need_numa(void)
* RETURNS:
* Pointer to the allocated area on success, NULL on failure.
*/
static void * __init pcpu_alloc_bootmem(unsigned int cpu, unsigned long size,
unsigned long align)
static void * __init pcpu_alloc_bootmem(unsigned int cpu, unsigned long size, unsigned long align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
const unsigned long goal = __pa(MAX_DMA_ADDRESS);
#ifdef CONFIG_NUMA
int node = early_cpu_to_node(cpu);
int node = cpu_to_nd_fn(cpu);
void *ptr;
if (!node_online(node) || !NODE_DATA(node)) {
@ -128,9 +128,10 @@ static void * __init pcpu_alloc_bootmem(unsigned int cpu, unsigned long size,
/*
* Helpers for first chunk memory allocation
*/
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size, size_t align)
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size, size_t align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
return pcpu_alloc_bootmem(cpu, size, align);
return pcpu_alloc_bootmem(cpu, size, align, cpu_to_nd_fn);
}
static void __init pcpu_fc_free(void *ptr, size_t size)
@ -150,6 +151,11 @@ static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
#endif
}
static int __init pcpu_cpu_to_node(int cpu)
{
return early_cpu_to_node(cpu);
}
static void __init pcpup_populate_pte(unsigned long addr)
{
populate_extra_pte(addr);
@ -205,6 +211,7 @@ void __init setup_per_cpu_areas(void)
rc = pcpu_embed_first_chunk(PERCPU_FIRST_CHUNK_RESERVE,
dyn_size, atom_size,
pcpu_cpu_distance,
pcpu_cpu_to_node,
pcpu_fc_alloc, pcpu_fc_free);
if (rc < 0)
pr_warn("%s allocator failed (%d), falling back to page size\n",
@ -212,6 +219,7 @@ void __init setup_per_cpu_areas(void)
}
if (rc < 0)
rc = pcpu_page_first_chunk(PERCPU_FIRST_CHUNK_RESERVE,
pcpu_cpu_to_node,
pcpu_fc_alloc, pcpu_fc_free,
pcpup_populate_pte);
if (rc < 0)

8
drivers/base/arch_numa.c
View File

@ -155,10 +155,10 @@ static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
return node_distance(early_cpu_to_node(from), early_cpu_to_node(to));
}
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size,
size_t align)
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size, size_t align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
int nid = early_cpu_to_node(cpu);
int nid = cpu_to_nd_fn(cpu);
return memblock_alloc_try_nid(size, align,
__pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, nid);
@ -229,6 +229,7 @@ void __init setup_per_cpu_areas(void)
rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE,
PERCPU_DYNAMIC_RESERVE, PAGE_SIZE,
pcpu_cpu_distance,
early_cpu_to_node,
pcpu_fc_alloc, pcpu_fc_free);
#ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
if (rc < 0)
@ -240,6 +241,7 @@ void __init setup_per_cpu_areas(void)
#ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
if (rc < 0)
rc = pcpu_page_first_chunk(PERCPU_MODULE_RESERVE,
early_cpu_to_node,
pcpu_fc_alloc,
pcpu_fc_free,
pcpu_populate_pte);

7
include/linux/percpu.h
View File

@ -94,8 +94,9 @@ extern const char * const pcpu_fc_names[PCPU_FC_NR];
extern enum pcpu_fc pcpu_chosen_fc;
typedef void * (*pcpu_fc_alloc_fn_t)(unsigned int cpu, size_t size,
size_t align);
typedef int (pcpu_fc_cpu_to_node_fn_t)(int cpu);
typedef void * (*pcpu_fc_alloc_fn_t)(unsigned int cpu, size_t size, size_t align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn);
typedef void (*pcpu_fc_free_fn_t)(void *ptr, size_t size);
typedef void (*pcpu_fc_populate_pte_fn_t)(unsigned long addr);
typedef int (pcpu_fc_cpu_distance_fn_t)(unsigned int from, unsigned int to);
@ -111,12 +112,14 @@ extern void __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
extern int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
size_t atom_size,
pcpu_fc_cpu_distance_fn_t cpu_distance_fn,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn,
pcpu_fc_alloc_fn_t alloc_fn,
pcpu_fc_free_fn_t free_fn);
#endif
#ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
extern int __init pcpu_page_first_chunk(size_t reserved_size,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn,
pcpu_fc_alloc_fn_t alloc_fn,
pcpu_fc_free_fn_t free_fn,
pcpu_fc_populate_pte_fn_t populate_pte_fn);

14
mm/percpu.c
View File

@ -3001,6 +3001,7 @@ static struct pcpu_alloc_info * __init __flatten pcpu_build_alloc_info(
* @dyn_size: minimum free size for dynamic allocation in bytes
* @atom_size: allocation atom size
* @cpu_distance_fn: callback to determine distance between cpus, optional
* @cpu_to_nd_fn: callback to convert cpu to it's node, optional
* @alloc_fn: function to allocate percpu page
* @free_fn: function to free percpu page
*
@ -3030,6 +3031,7 @@ static struct pcpu_alloc_info * __init __flatten pcpu_build_alloc_info(
int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
size_t atom_size,
pcpu_fc_cpu_distance_fn_t cpu_distance_fn,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn,
pcpu_fc_alloc_fn_t alloc_fn,
pcpu_fc_free_fn_t free_fn)
{
@ -3066,7 +3068,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
BUG_ON(cpu == NR_CPUS);
/* allocate space for the whole group */
ptr = alloc_fn(cpu, gi->nr_units * ai->unit_size, atom_size);
ptr = alloc_fn(cpu, gi->nr_units * ai->unit_size, atom_size, cpu_to_nd_fn);
if (!ptr) {
rc = -ENOMEM;
goto out_free_areas;
@ -3143,6 +3145,7 @@ out_free:
/**
* pcpu_page_first_chunk - map the first chunk using PAGE_SIZE pages
* @reserved_size: the size of reserved percpu area in bytes
* @cpu_to_nd_fn: callback to convert cpu to it's node, optional
* @alloc_fn: function to allocate percpu page, always called with PAGE_SIZE
* @free_fn: function to free percpu page, always called with PAGE_SIZE
* @populate_pte_fn: function to populate pte
@ -3157,6 +3160,7 @@ out_free:
* 0 on success, -errno on failure.
*/
int __init pcpu_page_first_chunk(size_t reserved_size,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn,
pcpu_fc_alloc_fn_t alloc_fn,
pcpu_fc_free_fn_t free_fn,
pcpu_fc_populate_pte_fn_t populate_pte_fn)
@ -3201,7 +3205,7 @@ int __init pcpu_page_first_chunk(size_t reserved_size,
for (i = 0; i < unit_pages; i++) {
void *ptr;
ptr = alloc_fn(cpu, PAGE_SIZE, PAGE_SIZE);
ptr = alloc_fn(cpu, PAGE_SIZE, PAGE_SIZE, cpu_to_nd_fn);
if (!ptr) {
pr_warn("failed to allocate %s page for cpu%u\n",
psize_str, cpu);
@ -3278,8 +3282,8 @@ out_free_ar:
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
EXPORT_SYMBOL(__per_cpu_offset);
static void * __init pcpu_dfl_fc_alloc(unsigned int cpu, size_t size,
size_t align)
static void * __init pcpu_dfl_fc_alloc(unsigned int cpu, size_t size, size_t align,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
return memblock_alloc_from(size, align, __pa(MAX_DMA_ADDRESS));
}
@ -3300,7 +3304,7 @@ void __init setup_per_cpu_areas(void)
* what the legacy allocator did.
*/
rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE,
PERCPU_DYNAMIC_RESERVE, PAGE_SIZE, NULL,
PERCPU_DYNAMIC_RESERVE, PAGE_SIZE, NULL, NULL,
pcpu_dfl_fc_alloc, pcpu_dfl_fc_free);
if (rc < 0)
panic("Failed to initialize percpu areas.");