From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [RFC PATCH] Add CRC checksum for RCU lists
Date: Fri, 21 Sep 2007 14:02:21 +0200 [thread overview]
Message-ID: <20070921140221.000a416a@twins> (raw)
In-Reply-To: <1190313251.4518.14.camel@localhost.localdomain>
On Thu, 20 Sep 2007 14:34:11 -0400 Steven Rostedt <rostedt@goodmis.org>
wrote:
> +static inline void rcu_crc_check(struct rcu_head *head)
> +{
> + static int once;
> + if (unlikely(head->crc != rcu_crc_calc(head)) && !once) {
> + once++;
> + printk("BUG: RCU check failed!");
> + if (head->caller)
> + printk(" (caller=%p)",
> + head->caller);
char sym[KSYM_SYMBOL_LEN];
sprint_symbol(sym, head->caller);
printk(" (caller: [<%p>] %s)", head->caller, sym);
> + printk("\n");
> + printk(" CRC was %08lx, expected %08lx\n",
> + head->crc, rcu_crc_calc(head));
> + printk(" %p %p\n",
> + head->next, head->func);
> + dump_stack();
> + }
> +}
next prev parent reply other threads:[~2007-09-21 12:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-20 18:34 [RFC PATCH] Add CRC checksum for RCU lists Steven Rostedt
2007-09-21 12:02 ` Peter Zijlstra [this message]
2007-09-21 13:01 ` Steven Rostedt
2007-09-21 13:16 ` Jan Engelhardt
2007-09-21 13:27 ` Steven Rostedt
2007-09-21 17:12 ` Paul E. McKenney
2007-09-21 21:32 ` Steven Rostedt
2007-09-22 7:04 ` Kyle Moffett
2007-09-22 17:20 ` Paul E. McKenney
2007-09-22 17:59 ` Paul E. McKenney
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