Commit 16338e7c authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Uladzislau Rezki (Sony)
Browse files

rcutorture: Pretty-print rcutorture reader segments 



The current "Failure/close-call rcutorture reader segments" output is
good and sufficient, but annoying when you have to interpret several
tens of them after an all-night rcutorture run.  This commit therefore
makes them a bit more human-readable.

Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: default avatarUladzislau Rezki (Sony) <urezki@gmail.com>
parent b27a34f9

kernel/rcu/rcutorture.c

+20 −6
Original line number Diff line number Diff line
@@ -3560,12 +3560,14 @@ rcu_torture_cleanup(void) 
			pr_alert("\t: No segments recorded!!!\n");

		firsttime = 1;

		for (i = 0; i < rt_read_nsegs; i++) {

			pr_alert("\t%d: %#x ", i, err_segs[i].rt_readstate);

			pr_alert("\t%d: %#4x", i, err_segs[i].rt_readstate);

			if (err_segs[i].rt_delay_jiffies != 0) {

				pr_cont("%s%ldjiffies", firsttime ? "" : "+",

					err_segs[i].rt_delay_jiffies);

				firsttime = 0;

			}

			if (IS_ENABLED(CONFIG_RCU_TORTURE_TEST_LOG_CPU))

				pr_cont(" CPU %-2d", err_segs[i].rt_cpu);

			if (err_segs[i].rt_delay_ms != 0) {

				pr_cont(" %s%ldms", firsttime ? "" : "+",

					err_segs[i].rt_delay_ms);
@@ -3577,8 +3579,20 @@ rcu_torture_cleanup(void) 
				firsttime = 0;

			}

			pr_cont("%s", err_segs[i].rt_preempted ? " preempted" : "");

			if (IS_ENABLED(CONFIG_RCU_TORTURE_TEST_LOG_CPU))

				pr_cont(" CPU %d", err_segs[i].rt_cpu);

			if (err_segs[i].rt_readstate & RCUTORTURE_RDR_BH)

				pr_cont(" BH");

			if (err_segs[i].rt_readstate & RCUTORTURE_RDR_IRQ)

				pr_cont(" IRQ");

			if (err_segs[i].rt_readstate & RCUTORTURE_RDR_PREEMPT)

				pr_cont(" PREEMPT");

			if (err_segs[i].rt_readstate & RCUTORTURE_RDR_RBH)

				pr_cont(" RBH");

			if (err_segs[i].rt_readstate & RCUTORTURE_RDR_SCHED)

				pr_cont(" SCHED");

			if (err_segs[i].rt_readstate & RCUTORTURE_RDR_RCU_1)

				pr_cont(" RCU_1");

			if (err_segs[i].rt_readstate & RCUTORTURE_RDR_RCU_2)

				pr_cont(" RCU_2");

			pr_cont("\n");



		}