The patch titled
Subject: fs/proc/vmcore: move vmcore definitions out of kcore.h
has been added to the -mm mm-unstable branch. Its filename is
fs-proc-vmcore-move-vmcore-definitions-out-of-kcoreh.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fs-proc-vmcore-move-vmcore-definitions-out-of-kcoreh.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: David Hildenbrand <david@xxxxxxxxxx>
Subject: fs/proc/vmcore: move vmcore definitions out of kcore.h
Date: Wed, 4 Dec 2024 13:54:36 +0100
These vmcore defines are not related to /proc/kcore, move them out.
We'll move "struct vmcoredd_node" to vmcore.c, because it is only used
internally. While "struct vmcore" is only used internally for now, we're
planning on using it from inline functions in crash_dump.h next, so move
it to crash_dump.h.
While at it, rename "struct vmcore" to "struct vmcore_range", which is a
more suitable name and will make the usage of it outside of vmcore.c
clearer.
Link: https://lkml.kernel.org/r/20241204125444.1734652-6-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>
Cc: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Cc: Cornelia Huck <cohuck@xxxxxxxxxx>
Cc: Dave Young <dyoung@xxxxxxxxxx>
Cc: Eric Farman <farman@xxxxxxxxxxxxx>
Cc: Eugenio Pérez <eperezma@xxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Janosch Frank <frankja@xxxxxxxxxxxxx>
Cc: Jason Wang <jasowang@xxxxxxxxxx>
Cc: Michael S. Tsirkin <mst@xxxxxxxxxx>
Cc: Sven Schnelle <svens@xxxxxxxxxxxxx>
Cc: Thomas Huth <thuth@xxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Vivek Goyal <vgoyal@xxxxxxxxxx>
Cc: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/vmcore.c | 26 ++++++++++++++++----------
include/linux/crash_dump.h | 7 +++++++
include/linux/kcore.h | 13 -------------
3 files changed, 23 insertions(+), 23 deletions(-)
--- a/fs/proc/vmcore.c~fs-proc-vmcore-move-vmcore-definitions-out-of-kcoreh
+++ a/fs/proc/vmcore.c
@@ -53,6 +53,12 @@ static u64 vmcore_size;
static struct proc_dir_entry *proc_vmcore;
#ifdef CONFIG_PROC_VMCORE_DEVICE_DUMP
+struct vmcoredd_node {
+ struct list_head list; /* List of dumps */
+ void *buf; /* Buffer containing device's dump */
+ unsigned int size; /* Size of the buffer */
+};
+
/* Device Dump list and mutex to synchronize access to list */
static LIST_HEAD(vmcoredd_list);
@@ -322,10 +328,10 @@ static int vmcoredd_mmap_dumps(struct vm
*/
static ssize_t __read_vmcore(struct iov_iter *iter, loff_t *fpos)
{
+ struct vmcore_range *m = NULL;
ssize_t acc = 0, tmp;
size_t tsz;
u64 start;
- struct vmcore *m = NULL;
if (!iov_iter_count(iter) || *fpos >= vmcore_size)
return 0;
@@ -580,7 +586,7 @@ static int mmap_vmcore(struct file *file
{
size_t size = vma->vm_end - vma->vm_start;
u64 start, end, len, tsz;
- struct vmcore *m;
+ struct vmcore_range *m;
start = (u64)vma->vm_pgoff << PAGE_SHIFT;
end = start + size;
@@ -703,16 +709,16 @@ static const struct proc_ops vmcore_proc
.proc_mmap = mmap_vmcore,
};
-static struct vmcore* __init get_new_element(void)
+static struct vmcore_range * __init get_new_element(void)
{
- return kzalloc(sizeof(struct vmcore), GFP_KERNEL);
+ return kzalloc(sizeof(struct vmcore_range), GFP_KERNEL);
}
static u64 get_vmcore_size(size_t elfsz, size_t elfnotesegsz,
struct list_head *vc_list)
{
+ struct vmcore_range *m;
u64 size;
- struct vmcore *m;
size = elfsz + elfnotesegsz;
list_for_each_entry(m, vc_list, list) {
@@ -1110,11 +1116,11 @@ static int __init process_ptload_program
size_t elfnotes_sz,
struct list_head *vc_list)
{
+ struct vmcore_range *new;
int i;
Elf64_Ehdr *ehdr_ptr;
Elf64_Phdr *phdr_ptr;
loff_t vmcore_off;
- struct vmcore *new;
ehdr_ptr = (Elf64_Ehdr *)elfptr;
phdr_ptr = (Elf64_Phdr*)(elfptr + sizeof(Elf64_Ehdr)); /* PT_NOTE hdr */
@@ -1153,11 +1159,11 @@ static int __init process_ptload_program
size_t elfnotes_sz,
struct list_head *vc_list)
{
+ struct vmcore_range *new;
int i;
Elf32_Ehdr *ehdr_ptr;
Elf32_Phdr *phdr_ptr;
loff_t vmcore_off;
- struct vmcore *new;
ehdr_ptr = (Elf32_Ehdr *)elfptr;
phdr_ptr = (Elf32_Phdr*)(elfptr + sizeof(Elf32_Ehdr)); /* PT_NOTE hdr */
@@ -1195,8 +1201,8 @@ static int __init process_ptload_program
static void set_vmcore_list_offsets(size_t elfsz, size_t elfnotes_sz,
struct list_head *vc_list)
{
+ struct vmcore_range *m;
loff_t vmcore_off;
- struct vmcore *m;
/* Skip ELF header, program headers and ELF note segment. */
vmcore_off = elfsz + elfnotes_sz;
@@ -1605,9 +1611,9 @@ void vmcore_cleanup(void)
/* clear the vmcore list. */
while (!list_empty(&vmcore_list)) {
- struct vmcore *m;
+ struct vmcore_range *m;
- m = list_first_entry(&vmcore_list, struct vmcore, list);
+ m = list_first_entry(&vmcore_list, struct vmcore_range, list);
list_del(&m->list);
kfree(m);
}
--- a/include/linux/crash_dump.h~fs-proc-vmcore-move-vmcore-definitions-out-of-kcoreh
+++ a/include/linux/crash_dump.h
@@ -114,6 +114,13 @@ struct vmcore_cb {
extern void register_vmcore_cb(struct vmcore_cb *cb);
extern void unregister_vmcore_cb(struct vmcore_cb *cb);
+struct vmcore_range {
+ struct list_head list;
+ unsigned long long paddr;
+ unsigned long long size;
+ loff_t offset;
+};
+
#else /* !CONFIG_CRASH_DUMP */
static inline bool is_kdump_kernel(void) { return false; }
#endif /* CONFIG_CRASH_DUMP */
--- a/include/linux/kcore.h~fs-proc-vmcore-move-vmcore-definitions-out-of-kcoreh
+++ a/include/linux/kcore.h
@@ -20,19 +20,6 @@ struct kcore_list {
int type;
};
-struct vmcore {
- struct list_head list;
- unsigned long long paddr;
- unsigned long long size;
- loff_t offset;
-};
-
-struct vmcoredd_node {
- struct list_head list; /* List of dumps */
- void *buf; /* Buffer containing device's dump */
- unsigned int size; /* Size of the buffer */
-};
-
#ifdef CONFIG_PROC_KCORE
void __init kclist_add(struct kcore_list *, void *, size_t, int type);
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
mm-mempolicy-fix-migrate_to_node-assuming-there-is-at-least-one-vma-in-a-mm.patch
mm-filemap-dont-call-folio_test_locked-without-a-reference-in-next_uptodate_folio.patch
docs-tmpfs-update-the-large-folios-policy-for-tmpfs-and-shmem.patch
mm-memory_hotplug-move-debug_pagealloc_map_pages-into-online_pages_range.patch
mm-page_isolation-dont-pass-gfp-flags-to-isolate_single_pageblock.patch
mm-page_isolation-dont-pass-gfp-flags-to-start_isolate_page_range.patch
mm-page_alloc-make-__alloc_contig_migrate_range-static.patch
mm-page_alloc-sort-out-the-alloc_contig_range-gfp-flags-mess.patch
mm-page_alloc-forward-the-gfp-flags-from-alloc_contig_range-to-post_alloc_hook.patch
powernv-memtrace-use-__gfp_zero-with-alloc_contig_pages.patch
mm-hugetlb-dont-map-folios-writable-without-vm_write-when-copying-during-fork.patch
fs-proc-vmcore-convert-vmcore_cb_lock-into-vmcore_mutex.patch
fs-proc-vmcore-replace-vmcoredd_mutex-by-vmcore_mutex.patch
fs-proc-vmcore-disallow-vmcore-modifications-while-the-vmcore-is-open.patch
fs-proc-vmcore-prefix-all-pr_-with-vmcore.patch
fs-proc-vmcore-move-vmcore-definitions-out-of-kcoreh.patch
fs-proc-vmcore-factor-out-allocating-a-vmcore-range-and-adding-it-to-a-list.patch
fs-proc-vmcore-factor-out-freeing-a-list-of-vmcore-ranges.patch
fs-proc-vmcore-introduce-proc_vmcore_device_ram-to-detect-device-ram-ranges-in-2nd-kernel.patch
virtio-mem-mark-device-ready-before-registering-callbacks-in-kdump-mode.patch
virtio-mem-remember-usable-region-size.patch
virtio-mem-support-config_proc_vmcore_device_ram.patch
s390-kdump-virtio-mem-kdump-support-config_proc_vmcore_device_ram.patch
