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fs/proc/vmcore: factor out allocating a vmcore range and adding it to a list

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Let's factor it out into include/linux/crash_dump.h, from where we can
use it also outside of vmcore.c later.

Acked-by: Baoquan He <bhe@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20241204125444.1734652-7-david@redhat.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
David Hildenbrand
2024-12-04 13:54:37 +01:00
committed by Michael S. Tsirkin
parent 819403c893
commit e017b1f4aa
2 changed files with 16 additions and 19 deletions
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21
fs/proc/vmcore.c
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@@ -709,11 +709,6 @@ static const struct proc_ops vmcore_proc_ops = {
.proc_mmap = mmap_vmcore,
};
static struct vmcore_range * __init get_new_element(void)
{
return kzalloc(sizeof(struct vmcore_range), GFP_KERNEL);
}
static u64 get_vmcore_size(size_t elfsz, size_t elfnotesegsz,
struct list_head *vc_list)
{
@@ -1116,7 +1111,6 @@ static int __init process_ptload_program_headers_elf64(char *elfptr,
size_t elfnotes_sz,
struct list_head *vc_list)
{
struct vmcore_range *new;
int i;
Elf64_Ehdr *ehdr_ptr;
Elf64_Phdr *phdr_ptr;
@@ -1139,13 +1133,8 @@ static int __init process_ptload_program_headers_elf64(char *elfptr,
end = roundup(paddr + phdr_ptr->p_memsz, PAGE_SIZE);
size = end - start;
/* Add this contiguous chunk of memory to vmcore list.*/
new = get_new_element();
if (!new)
if (vmcore_alloc_add_range(vc_list, start, size))
return -ENOMEM;
new->paddr = start;
new->size = size;
list_add_tail(&new->list, vc_list);
/* Update the program header offset. */
phdr_ptr->p_offset = vmcore_off + (paddr - start);
@@ -1159,7 +1148,6 @@ static int __init process_ptload_program_headers_elf32(char *elfptr,
size_t elfnotes_sz,
struct list_head *vc_list)
{
struct vmcore_range *new;
int i;
Elf32_Ehdr *ehdr_ptr;
Elf32_Phdr *phdr_ptr;
@@ -1182,13 +1170,8 @@ static int __init process_ptload_program_headers_elf32(char *elfptr,
end = roundup(paddr + phdr_ptr->p_memsz, PAGE_SIZE);
size = end - start;
/* Add this contiguous chunk of memory to vmcore list.*/
new = get_new_element();
if (!new)
if (vmcore_alloc_add_range(vc_list, start, size))
return -ENOMEM;
new->paddr = start;
new->size = size;
list_add_tail(&new->list, vc_list);
/* Update the program header offset */
phdr_ptr->p_offset = vmcore_off + (paddr - start);