klp_init_transition

Name:Initialize the global target patch state and all tasks to the initial patch* state, and initialize all function transition states to true in preparation* for patching or unpatching.

Proto:void klp_init_transition(struct klp_patch *patch, int state)

Type:void

Parameter:

Type	Parameter	Name
struct klp_patch *	patch
int	state

510

initial_state = Not state

512

WARN_ON_ONCE(klp_target_state != ask patch states )

514

klp_transition_patch = patch

520

klp_target_state = state

522

pr_debug("'%s': initializing %s transition\n", Unique handle for this module , klp_target_state == KLP_PATCHED ? "patching" : "unpatching")

529

read_lock( & tasklist_lock)

530

Careful: this is a double loop, 'break' won't work as expected. (g, task)

531

WARN_ON_ONCE(patch_state != ask patch states )

532

patch_state = initial_state

534

read_unlock( & tasklist_lock)

539

for_each_possible_cpu(cpu)

540

task = dle_task - return the idle task for a given CPU.*@cpu: the processor in question.* Return: The idle task for the CPU @cpu.

541

WARN_ON_ONCE(patch_state != ask patch states )

542

patch_state = initial_state

554

smp_wmb()

567

klp_for_each_object(patch, obj)

568

klp_for_each_func(obj, func)

569

transition = true

**Caller**
Name	Describe
__klp_enable_patch
__klp_disable_patch	Sysfs Interface* /sys/kernel/livepatch* /sys/kernel/livepatch/* /sys/kernel/livepatch//enabled* /sys/kernel/livepatch//transition* /sys/kernel/livepatch//force* /sys/kernel/livepatch//

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Function report