diff options
| author | Baoquan He <bhe@redhat.com> | 2023-11-15 21:00:27 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-10 17:21:44 -0800 |
| commit | 7acf164b259d9007264d9d8501da1023f140a3b4 (patch) | |
| tree | 994fc9459720df4d8e4088eb401e987337d66f8c /include/linux/ioport.h | |
| parent | bfc4372b86085ec947fdcef20cbe40c55066394f (diff) | |
resource: add walk_system_ram_res_rev()
This function, being a variant of walk_system_ram_res() introduced in
commit 8c86e70acead ("resource: provide new functions to walk through
resources"), walks through a list of all the resources of System RAM in
reversed order, i.e., from higher to lower.
It will be used in kexec_file code to load kernel, initrd etc when
preparing kexec reboot.
Link: https://lkml.kernel.org/r/ZVTA6z/06cLnWKUz@MiWiFi-R3L-srv
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/ioport.h')
| -rw-r--r-- | include/linux/ioport.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 14f5cfabbbc8..db7fe25f3370 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -331,6 +331,9 @@ extern int walk_system_ram_res(u64 start, u64 end, void *arg, int (*func)(struct resource *, void *)); extern int +walk_system_ram_res_rev(u64 start, u64 end, void *arg, + int (*func)(struct resource *, void *)); +extern int walk_iomem_res_desc(unsigned long desc, unsigned long flags, u64 start, u64 end, void *arg, int (*func)(struct resource *, void *)); |