diff options
Diffstat (limited to 'kernel/crash_dump.c')
| -rw-r--r-- | kernel/crash_dump.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/crash_dump.c b/kernel/crash_dump.c index 459ba49..334c37f 100644 --- a/kernel/crash_dump.c +++ b/kernel/crash_dump.c @@ -18,7 +18,16 @@ /* Stores the physical address of elf header of crash image. */ unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX; -/* +/** + * copy_oldmem_page - copy one page from "oldmem" + * @pfn: page frame number to be copied + * @buf: target memory address for the copy; this can be in kernel address + * space or user address space (see @userbuf) + * @csize: number of bytes to copy + * @offset: offset in bytes into the page (based on pfn) to begin the copy + * @userbuf: if set, @buf is in user address space, use copy_to_user(), + * otherwise @buf is in kernel address space, use memcpy(). + * * Copy a page from "oldmem". For this page, there is no pte mapped * in the current kernel. We stitch up a pte, similar to kmap_atomic. */ |