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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-23 11:11:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-23 11:11:51 -0700 |
| commit | d2d721e2eb1337c67f0c5bba303f8a013b622bed (patch) | |
| tree | 252f953a6e36d367d670b31c50fde5ec32051a92 /kernel | |
| parent | 28bbe4ea686a023929d907cc168430b61094811c (diff) | |
| parent | ea5377ec49f29baaf50cbffa986a8ae667b7eaff (diff) | |
Merge tag 'livepatching-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
Pull livepatching update from Petr Mladek:
- show patch->replace flag in sysfs
- add or improve few selftests
* tag 'livepatching-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
livepatch: Replace snprintf() with sysfs_emit()
selftests/livepatch: Add selftests for "replace" sysfs attribute
livepatch: Add "replace" sysfs attribute
selftests: livepatch: Test atomic replace against multiple modules
selftests/livepatch: define max test-syscall processes
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/livepatch/core.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index 52426665eecc..3c21c31796db 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -346,6 +346,7 @@ int klp_apply_section_relocs(struct module *pmod, Elf_Shdr *sechdrs, * /sys/kernel/livepatch/<patch>/enabled * /sys/kernel/livepatch/<patch>/transition * /sys/kernel/livepatch/<patch>/force + * /sys/kernel/livepatch/<patch>/replace * /sys/kernel/livepatch/<patch>/<object> * /sys/kernel/livepatch/<patch>/<object>/patched * /sys/kernel/livepatch/<patch>/<object>/<function,sympos> @@ -401,7 +402,7 @@ static ssize_t enabled_show(struct kobject *kobj, struct klp_patch *patch; patch = container_of(kobj, struct klp_patch, kobj); - return snprintf(buf, PAGE_SIZE-1, "%d\n", patch->enabled); + return sysfs_emit(buf, "%d\n", patch->enabled); } static ssize_t transition_show(struct kobject *kobj, @@ -410,8 +411,7 @@ static ssize_t transition_show(struct kobject *kobj, struct klp_patch *patch; patch = container_of(kobj, struct klp_patch, kobj); - return snprintf(buf, PAGE_SIZE-1, "%d\n", - patch == klp_transition_patch); + return sysfs_emit(buf, "%d\n", patch == klp_transition_patch); } static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr, @@ -443,13 +443,24 @@ static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr, return count; } +static ssize_t replace_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct klp_patch *patch; + + patch = container_of(kobj, struct klp_patch, kobj); + return sysfs_emit(buf, "%d\n", patch->replace); +} + static struct kobj_attribute enabled_kobj_attr = __ATTR_RW(enabled); static struct kobj_attribute transition_kobj_attr = __ATTR_RO(transition); static struct kobj_attribute force_kobj_attr = __ATTR_WO(force); +static struct kobj_attribute replace_kobj_attr = __ATTR_RO(replace); static struct attribute *klp_patch_attrs[] = { &enabled_kobj_attr.attr, &transition_kobj_attr.attr, &force_kobj_attr.attr, + &replace_kobj_attr.attr, NULL }; ATTRIBUTE_GROUPS(klp_patch); |