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From: Masami Hiramatsu <mhiramat@kernel.org>
To: Joel Fernandes <joelaf@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>,
	LKML <linux-kernel@vger.kernel.org>,
	"Cc: Android Kernel" <kernel-team@android.com>,
	Boqun Feng <boqun.feng@gmail.com>,
	Byungchul Park <byungchul.park@lge.com>,
	Ingo Molnar <mingo@redhat.com>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Paul McKenney <paulmck@linux.vnet.ibm.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Thomas Glexiner <tglx@linutronix.de>,
	Tom Zanussi <tom.zanussi@linux.intel.com>
Subject: Re: [PATCH v12 0/3] tracing: Centralize preemptirq tracepoints and unify their usage
Date: Fri, 3 Aug 2018 16:34:55 +0900	[thread overview]
Message-ID: <20180803163455.9c846c2a674819564517de59@kernel.org> (raw)
In-Reply-To: <CAJWu+opoT6Ky-pwAwBbjDkyt0Y_UF1QUnDshu-_vLTU5K87_HQ@mail.gmail.com>

On Thu, 2 Aug 2018 19:57:09 -0700
Joel Fernandes <joelaf@google.com> wrote:

> Hi Masami,
> 
> On Thu, Aug 2, 2018 at 7:55 AM, Masami Hiramatsu <mhiramat@kernel.org> wrote:
> > Hi Joel,
> >
> > I found this caused several issues when testing ftrace.
> >
> > #1) ftrace boottest (FTRACE_STARTUP_TEST) fails
> 
> This sadly appears to be a real issue. The startup test for
> "preemptirqsoff" tracer fails, however it passes for only preemptoff
> or only irqsoff. I tested only the last 2 tracers, not the first one,
> that's why I didn't catch it. I need to debug this more.

I found that this does not always happen, but 4 out of 5 it happens.

Thank you,

-- 
Masami Hiramatsu <mhiramat@kernel.org>

      parent reply	other threads:[~2018-08-03  7:35 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-30 22:24 [PATCH v12 0/3] tracing: Centralize preemptirq tracepoints and unify their usage Joel Fernandes
2018-07-30 22:24 ` [PATCH v12 1/3] lockdep: use this_cpu_ptr instead of get_cpu_var stats Joel Fernandes
2018-07-30 22:24 ` [PATCH v12 2/3] tracepoint: Make rcuidle tracepoint callers use SRCU Joel Fernandes
2018-07-30 23:10   ` Steven Rostedt
2018-08-10 15:35   ` Steven Rostedt
2018-08-10 16:32     ` Steven Rostedt
2018-07-30 22:24 ` [PATCH v12 3/3] tracing: Centralize preemptirq tracepoints and unify their usage Joel Fernandes
2018-08-06 19:50   ` Steven Rostedt
2018-08-07  0:43     ` Joel Fernandes
2018-08-07  1:43       ` Steven Rostedt
2018-08-07 13:33         ` Joel Fernandes
2018-08-07 13:49           ` Steven Rostedt
2018-08-07 14:10             ` Joel Fernandes
2018-08-07 14:34               ` Steven Rostedt
2018-08-07 14:48                 ` Joel Fernandes
2018-08-07 15:09                   ` Steven Rostedt
2018-08-07 15:24                     ` Joel Fernandes
2018-08-07 23:45                       ` Steven Rostedt
2018-08-07 23:54                         ` Joel Fernandes
2018-08-08  0:48                           ` Steven Rostedt
2018-08-08  1:17                             ` Joel Fernandes
2018-08-08  1:55                               ` Steven Rostedt
2018-08-08  2:13                                 ` Joel Fernandes
2018-08-08  2:28                                   ` Steven Rostedt
2018-08-08  3:44                                     ` Joel Fernandes
2018-08-08  3:53                                       ` Joel Fernandes
2018-08-08  5:06                                         ` Joel Fernandes
2018-08-08 12:46                                         ` Steven Rostedt
2018-08-08 13:03                                           ` Paul E. McKenney
2018-08-08 13:07                                             ` Steven Rostedt
2018-08-08 14:33                                               ` Paul E. McKenney
2018-08-08 14:49                                                 ` Steven Rostedt
2018-08-08 15:05                                                   ` Paul E. McKenney
2018-08-08 15:23                                                     ` Steven Rostedt
2018-08-08 16:02                                                       ` Paul E. McKenney
2018-08-08 16:24                                                         ` Steven Rostedt
2018-08-08 17:21                                                           ` Paul E. McKenney
2018-08-08 13:00                                         ` Paul E. McKenney
2018-08-08 14:10                                           ` Joel Fernandes
2018-08-08 14:49                                             ` Paul E. McKenney
2018-08-08 19:24                                               ` Joel Fernandes
2018-08-08 20:18                                                 ` Paul E. McKenney
2018-08-08 22:15                                                   ` Joel Fernandes
2018-08-08 22:47                                                     ` Paul E. McKenney
2018-08-09 12:18                                                       ` joel
2018-08-08 14:27                                           ` Steven Rostedt
2018-08-08 14:42                                             ` Paul E. McKenney
2018-08-08 15:27                                               ` Steven Rostedt
2018-08-08 16:03                                                 ` Paul E. McKenney
2018-08-02 14:55 ` [PATCH v12 0/3] " Masami Hiramatsu
2018-08-03  2:57   ` Joel Fernandes
2018-08-03  7:23     ` Masami Hiramatsu
2018-08-04  4:51       ` Joel Fernandes
2018-08-05 16:46         ` Joel Fernandes
2018-08-06  2:07           ` Masami Hiramatsu
2018-08-06 15:24             ` Joel Fernandes
2018-08-03  7:34     ` Masami Hiramatsu [this message]

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