rcutorture: Add preempt_count() to rcutorture_one_extend_check() diagnostics

paulmckrcu · urezki · commit c31569eec481 · 2024-12-14T17:05:36.000+01:00
This commit adds the value of preempt_count() to the diagnostics produced
by rcutorture_one_extend_check() to improve debugging.

Signed-off-by: Paul E. McKenney &lt;paulmck@kernel.org&gt;
Signed-off-by: Uladzislau Rezki (Sony) &lt;urezki@gmail.com&gt;
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
@@ -1872,7 +1872,7 @@ static void rcu_torture_reader_do_mbchk(long myid, struct rcu_torture *rtp,
 }
 
 // Verify the specified RCUTORTURE_RDR* state.
-#define ROEC_ARGS "%s %s: Current %#x  To add %#x  To remove %#x\n", __func__, s, curstate, new, old
+#define ROEC_ARGS "%s %s: Current %#x  To add %#x  To remove %#x  preempt_count() %#x\n", __func__, s, curstate, new, old, preempt_count()
 static void rcutorture_one_extend_check(char *s, int curstate, int new, int old, bool insoftirq)
 {
 	if (!IS_ENABLED(CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE))

Original file line number	Diff line number	Diff line change
`@@ -1872,7 +1872,7 @@ static void rcu_torture_reader_do_mbchk(long myid, struct rcu_torture *rtp,`
`1872`	`1872`	`}`
`1873`	`1873`
`1874`	`1874`	`// Verify the specified RCUTORTURE_RDR* state.`
`1875`		`-#define ROEC_ARGS "%s %s: Current %#x To add %#x To remove %#x\n", __func__, s, curstate, new, old`
	`1875`	`+#define ROEC_ARGS "%s %s: Current %#x To add %#x To remove %#x preempt_count() %#x\n", __func__, s, curstate, new, old, preempt_count()`
`1876`	`1876`	`static void rcutorture_one_extend_check(char *s, int curstate, int new, int old, bool insoftirq)`
`1877`	`1877`	`{`
`1878`	`1878`	`if (!IS_ENABLED(CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE))`