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Commit ecba29f4 authored by Petr Mladek's avatar Petr Mladek
Browse files

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: default avatarJosh Poimboeuf <jpoimboe@redhat.com>
Acked-by: default avatarMiroslav Benes <mbenes@suse.cz>
Acked-by: default avatarJoe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: default avatarPetr Mladek <pmladek@suse.com>
parent 375bfca3

kernel/livepatch/core.c

+4 −4
Original line number Diff line number Diff line
@@ -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;

kernel/livepatch/core.h

+6 −0
Original line number Diff line number Diff line
@@ -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);

kernel/livepatch/transition.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

}