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livepatch: Introduce klp_for_each_patch macro 

There are already macros to iterate over struct klp_func and klp_object.

Add also klp_for_each_patch(). But make it internal because also
klp_patches list is internal.

Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
Petr Mladek 2019-02-04 14:56:50 +01:00
parent 375bfca345
commit ecba29f434
3 changed files with 11 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
kernel/livepatch/core.c
View File

@ -554,7 +554,7 @@ static int klp_add_nops(struct klp_patch *patch)
struct klp_patch *old_patch;
struct klp_object *old_obj;
list_for_each_entry(old_patch, &klp_patches, list) {
klp_for_each_patch(old_patch) {
klp_for_each_object(old_patch, old_obj) {
int err;
@ -1089,7 +1089,7 @@ void klp_discard_replaced_patches(struct klp_patch *new_patch)
{
struct klp_patch *old_patch, *tmp_patch;
list_for_each_entry_safe(old_patch, tmp_patch, &klp_patches, list) {
klp_for_each_patch_safe(old_patch, tmp_patch) {
if (old_patch == new_patch)
return;
@ -1133,7 +1133,7 @@ static void klp_cleanup_module_patches_limited(struct module *mod,
struct klp_patch *patch;
struct klp_object *obj;
list_for_each_entry(patch, &klp_patches, list) {
klp_for_each_patch(patch) {
if (patch == limit)
break;
@ -1180,7 +1180,7 @@ int klp_module_coming(struct module *mod)
*/
mod->klp_alive = true;
list_for_each_entry(patch, &klp_patches, list) {
klp_for_each_patch(patch) {
klp_for_each_object(patch, obj) {
if (!klp_is_module(obj) || strcmp(obj->name, mod->name))
continue;

6
kernel/livepatch/core.h
View File

@ -7,6 +7,12 @@
extern struct mutex klp_mutex;
extern struct list_head klp_patches;
#define klp_for_each_patch_safe(patch, tmp_patch) \
list_for_each_entry_safe(patch, tmp_patch, &klp_patches, list)
#define klp_for_each_patch(patch) \
list_for_each_entry(patch, &klp_patches, list)
void klp_free_patch_start(struct klp_patch *patch);
void klp_discard_replaced_patches(struct klp_patch *new_patch);
void klp_discard_nops(struct klp_patch *new_patch);

2
kernel/livepatch/transition.c
View File

@ -642,6 +642,6 @@ void klp_force_transition(void)
for_each_possible_cpu(cpu)
klp_update_patch_state(idle_task(cpu));
list_for_each_entry(patch, &klp_patches, list)
klp_for_each_patch(patch)
patch->forced = true;
}