Commit 4d4f88fa authored by Paul E. McKenney's avatar Paul E. McKenney

lockdep: Make RCU suspicious-access splats use pr_err

This commit switches RCU suspicious-access splats use pr_err()
instead of the current INFO printk()s.  This change makes it easier
to automatically classify splats.
Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 7c6094db
...@@ -4412,13 +4412,13 @@ void lockdep_rcu_suspicious(const char *file, const int line, const char *s) ...@@ -4412,13 +4412,13 @@ void lockdep_rcu_suspicious(const char *file, const int line, const char *s)
#endif /* #ifdef CONFIG_PROVE_RCU_REPEATEDLY */ #endif /* #ifdef CONFIG_PROVE_RCU_REPEATEDLY */
/* Note: the following can be executed concurrently, so be careful. */ /* Note: the following can be executed concurrently, so be careful. */
printk("\n"); printk("\n");
printk("===============================\n"); pr_err("===============================\n");
printk("[ INFO: suspicious RCU usage. ]\n"); pr_err("[ ERR: suspicious RCU usage. ]\n");
print_kernel_ident(); print_kernel_ident();
printk("-------------------------------\n"); pr_err("-------------------------------\n");
printk("%s:%d %s!\n", file, line, s); pr_err("%s:%d %s!\n", file, line, s);
printk("\nother info that might help us debug this:\n\n"); pr_err("\nother info that might help us debug this:\n\n");
printk("\n%srcu_scheduler_active = %d, debug_locks = %d\n", pr_err("\n%srcu_scheduler_active = %d, debug_locks = %d\n",
!rcu_lockdep_current_cpu_online() !rcu_lockdep_current_cpu_online()
? "RCU used illegally from offline CPU!\n" ? "RCU used illegally from offline CPU!\n"
: !rcu_is_watching() : !rcu_is_watching()
......
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