diff options
Diffstat (limited to 'mm/percpu-km.c')
| -rw-r--r-- | mm/percpu-km.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/mm/percpu-km.c b/mm/percpu-km.c index eb58aa4c0997..4efa74a495cb 100644 --- a/mm/percpu-km.c +++ b/mm/percpu-km.c @@ -1,11 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * mm/percpu-km.c - kernel memory based chunk allocation * * Copyright (C) 2010 SUSE Linux Products GmbH * Copyright (C) 2010 Tejun Heo <tj@kernel.org> * - * This file is released under the GPLv2. - * * Chunks are allocated as a contiguous kernel memory using gfp * allocation. This is to be used on nommu architectures. * @@ -33,8 +32,14 @@ #include <linux/log2.h> +static void pcpu_post_unmap_tlb_flush(struct pcpu_chunk *chunk, + int page_start, int page_end) +{ + /* nothing */ +} + static int pcpu_populate_chunk(struct pcpu_chunk *chunk, - int page_start, int page_end) + int page_start, int page_end, gfp_t gfp) { return 0; } @@ -45,32 +50,33 @@ static void pcpu_depopulate_chunk(struct pcpu_chunk *chunk, /* nada */ } -static struct pcpu_chunk *pcpu_create_chunk(void) +static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp) { const int nr_pages = pcpu_group_sizes[0] >> PAGE_SHIFT; struct pcpu_chunk *chunk; struct page *pages; + unsigned long flags; int i; - chunk = pcpu_alloc_chunk(); + chunk = pcpu_alloc_chunk(gfp); if (!chunk) return NULL; - pages = alloc_pages(GFP_KERNEL, order_base_2(nr_pages)); + pages = alloc_pages(gfp, order_base_2(nr_pages)); if (!pages) { pcpu_free_chunk(chunk); return NULL; } for (i = 0; i < nr_pages; i++) - pcpu_set_page_chunk(nth_page(pages, i), chunk); + pcpu_set_page_chunk(pages + i, chunk); chunk->data = pages; - chunk->base_addr = page_address(pages) - pcpu_group_offsets[0]; + chunk->base_addr = page_address(pages); - spin_lock_irq(&pcpu_lock); + spin_lock_irqsave(&pcpu_lock, flags); pcpu_chunk_populated(chunk, 0, nr_pages); - spin_unlock_irq(&pcpu_lock); + spin_unlock_irqrestore(&pcpu_lock, flags); pcpu_stats_chunk_alloc(); trace_percpu_create_chunk(chunk->base_addr); @@ -117,3 +123,8 @@ static int __init pcpu_verify_alloc_info(const struct pcpu_alloc_info *ai) return 0; } + +static bool pcpu_should_reclaim_chunk(struct pcpu_chunk *chunk) +{ + return false; +} |