Merge tag 'bitmap-for-6.17' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:

 - find_random_bit() series (Yury)

 - GENMASK() consolidation (Vincent)

 - random cleanups (Shaopeng, Ben, Yury)

* tag 'bitmap-for-6.17' of https://github.com/norov/linux:
  bitfield: Ensure the return values of helper functions are checked
  test_bits: add tests for __GENMASK() and __GENMASK_ULL()
  bits: unify the non-asm GENMASK*()
  bits: split the definition of the asm and non-asm GENMASK*()
  cpumask: Remove unnecessary cpumask_nth_andnot()
  watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu()
  clocksource: Improve randomness in clocksource_verify_choose_cpus()
  cpumask: introduce cpumask_random()
  bitmap: generalize node_random()

kernel/time/clocksource.c

@@ -340,10 +340,7 @@ static void clocksource_verify_choose_cpus(void)
 	 * CPUs that are currently online.
 	 */
 	for (i = 1; i < n; i++) {
-		cpu = get_random_u32_below(nr_cpu_ids);
-		cpu = cpumask_next(cpu - 1, cpu_online_mask);
-		if (cpu >= nr_cpu_ids)
-			cpu = cpumask_first(cpu_online_mask);
+		cpu = cpumask_random(cpu_online_mask);
 		if (!WARN_ON_ONCE(cpu >= nr_cpu_ids))
 			cpumask_set_cpu(cpu, &cpus_chosen);
 	}

kernel/watchdog_buddy.c

@@ -12,10 +12,7 @@ static unsigned int watchdog_next_cpu(unsigned int cpu)
 {
 	unsigned int next_cpu;
 
-	next_cpu = cpumask_next(cpu, &watchdog_cpus);
-	if (next_cpu >= nr_cpu_ids)
-		next_cpu = cpumask_first(&watchdog_cpus);
-
+	next_cpu = cpumask_next_wrap(cpu, &watchdog_cpus);
 	if (next_cpu == cpu)
 		return nr_cpu_ids;