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From: Peter Zijlstra <peterz@infradead.org>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	"Joel Fernandes (Google)" <joel@joelfernandes.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Josh Triplett <josh@joshtriplett.org>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Lai Jiangshan <jiangshanlai@gmail.com>
Subject: Re: [PATCH] tracing/perf: Move rcu_irq_enter/exit_irqson() to perf trace point hook
Date: Tue, 11 Feb 2020 14:10:46 +0100	[thread overview]
Message-ID: <20200211131046.GR14914@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20200211125929.GG2935@paulmck-ThinkPad-P72>

On Tue, Feb 11, 2020 at 04:59:29AM -0800, Paul E. McKenney wrote:

> However, a quick grep for NMI_MASK didn't show me the NMI_MASK bit
> getting set.  Help?

| #define nmi_enter()						\
| 	do {							\
| 		arch_nmi_enter();				\
| 		printk_nmi_enter();				\
| 		lockdep_off();					\
| 		ftrace_nmi_enter();				\
| 		BUG_ON(in_nmi());				\
| 		preempt_count_add(NMI_OFFSET + HARDIRQ_OFFSET);	\

		^^^^ right there

| 		rcu_nmi_enter();				\
| 		trace_hardirq_enter();				\
| 	} while (0)

  reply	other threads:[~2020-02-11 13:11 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-10 22:06 [PATCH] tracing/perf: Move rcu_irq_enter/exit_irqson() to perf trace point hook Steven Rostedt
2020-02-11  0:30 ` Mathieu Desnoyers
2020-02-11  2:22   ` Steven Rostedt
2020-02-11  2:32     ` joel
2020-02-11 15:19     ` Mathieu Desnoyers
2020-02-11 12:00   ` Peter Zijlstra
2020-02-11 13:03     ` Paul E. McKenney
2020-02-11 13:16       ` Peter Zijlstra
2020-02-11 13:23         ` Paul E. McKenney
2020-02-11 14:10     ` Steven Rostedt
2020-02-11 11:49 ` Peter Zijlstra
2020-02-11 12:59   ` Paul E. McKenney
2020-02-11 13:10     ` Peter Zijlstra [this message]
2020-02-11 13:20       ` Paul E. McKenney
2020-02-11 14:05   ` Steven Rostedt
2020-02-11 15:05     ` Peter Zijlstra
2020-02-11 15:29       ` Peter Zijlstra
2020-02-11 16:16         ` Steven Rostedt
2020-02-11 15:06     ` Paul E. McKenney
2020-02-11 15:31       ` Peter Zijlstra
2020-02-11 15:40         ` Paul E. McKenney
2020-02-11 12:21 ` Peter Zijlstra
2020-02-11 14:10   ` Steven Rostedt

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