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mm: percpu: add generic pcpu_fc_alloc/free funciton

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With the previous patch, we could add a generic pcpu first chunk
allocate and free function to cleanup the duplicated definations on each
architecture.

Link: https://lkml.kernel.org/r/20211216112359.103822-4-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: 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: "Rafael J. Wysocki" <rafael@kernel.org>
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 18:07:49 -08:00
committed by Linus Torvalds
parent 1ca3fb3abd
commit 23f917169e
7 changed files with 54 additions and 228 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/base/arch_numa.c
View File

@@ -155,20 +155,6 @@ 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,
pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn)
{
int nid = cpu_to_nd_fn(cpu);
return memblock_alloc_try_nid(size, align,
__pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, nid);
}
static void __init pcpu_fc_free(void *ptr, size_t size)
{
memblock_free(ptr, size);
}
#ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
static void __init pcpu_populate_pte(unsigned long addr)
{
@@ -229,8 +215,7 @@ 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);
early_cpu_to_node);
#ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
if (rc < 0)
pr_warn("PERCPU: %s allocator failed (%d), falling back to page size\n",
@@ -242,8 +227,6 @@ void __init setup_per_cpu_areas(void)
if (rc < 0)
rc = pcpu_page_first_chunk(PERCPU_MODULE_RESERVE,
early_cpu_to_node,
pcpu_fc_alloc,
pcpu_fc_free,
pcpu_populate_pte);
#endif
if (rc < 0)