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From: Steven Rostedt <rostedt@goodmis.org>
To: David Laight <David.Laight@ACULAB.COM>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	"Alexei Starovoitov" <alexei.starovoitov@gmail.com>,
	Peter Wu <peter@lekensteyn.nl>, Jonathan Corbet <corbet@lwn.net>,
	Tom Zanussi <zanussi@kernel.org>,
	"Shuah Khan" <shuahkhan@gmail.com>, bpf <bpf@vger.kernel.org>
Subject: Re: [PATCH 00/12 v2] ring-buffer/tracing: Remove disabling of ring buffer while reading trace file
Date: Fri, 27 Mar 2020 10:30:46 -0400	[thread overview]
Message-ID: <20200327103046.08f06131@gandalf.local.home> (raw)
In-Reply-To: <60977a309b5d46979a9a9bbd46c10932@AcuMS.aculab.com>

On Fri, 27 Mar 2020 10:07:00 +0000
David Laight <David.Laight@ACULAB.COM> wrote:

> > If needed, I can add a kernel command line option and a Kconfig that
> > makes this set to true by default.  
> 
> Maybe a different file 'trace_no_pause' ?

I rather not add another file, it adds more complexity, and confuses the
interface even more. I'll leave this as is.

> Along with the one that lets you read the raw trace and get EOF.

Can you explain this more? I think we talked about this before, but I don't
remember the details.

-- Steve

  reply	other threads:[~2020-03-27 14:30 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-19 23:22 [PATCH 00/12 v2] ring-buffer/tracing: Remove disabling of ring buffer while reading trace file Steven Rostedt
2020-03-19 23:22 ` [PATCH 01/12 v2] selftest/ftrace: Fix function trigger test to handle trace not disabling the tracer Steven Rostedt
2020-03-19 23:22 ` [PATCH 02/12 v2] tracing: Save off entry when peeking at next entry Steven Rostedt
2020-03-20  2:57   ` Masami Hiramatsu
2020-03-26  9:12   ` [tracing] cd8f62b481: BUG:sleeping_function_called_from_invalid_context_at_mm/slab.h kernel test robot
2020-03-26  9:12     ` kernel test robot
2020-04-01 14:07     ` Masami Hiramatsu
2020-04-01 14:07       ` Masami Hiramatsu
2020-04-01 14:21       ` Steven Rostedt
2020-04-01 14:21         ` Steven Rostedt
2020-04-01 15:04         ` Steven Rostedt
2020-04-01 15:04           ` Steven Rostedt
2020-04-02  7:19           ` Masami Hiramatsu
2020-04-02  7:19             ` Masami Hiramatsu
2020-04-02 18:14             ` Steven Rostedt
2020-04-02 18:14               ` Steven Rostedt
2020-04-03  6:47               ` Masami Hiramatsu
2020-04-03  6:47                 ` Masami Hiramatsu
2020-04-03 13:16                 ` Steven Rostedt
2020-04-03 13:16                   ` Steven Rostedt
2020-03-19 23:22 ` [PATCH 03/12 v2] ring-buffer: Have ring_buffer_empty() not depend on tracing stopped Steven Rostedt
2020-03-19 23:22 ` [PATCH 04/12 v2] ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance() Steven Rostedt
2020-03-19 23:22 ` [PATCH 05/12 v2] ring-buffer: Add page_stamp to iterator for synchronization Steven Rostedt
2020-03-19 23:22 ` [PATCH 06/12 v2] ring-buffer: Have rb_iter_head_event() handle concurrent writer Steven Rostedt
2020-03-19 23:22 ` [PATCH 07/12 v2] ring-buffer: Do not die if rb_iter_peek() fails more than thrice Steven Rostedt
2020-03-19 23:22 ` [PATCH 08/12 v2] ring-buffer: Optimize rb_iter_head_event() Steven Rostedt
2020-03-19 23:22 ` [PATCH 09/12 v2] ring-buffer: Do not disable recording when there is an iterator Steven Rostedt
2020-03-19 23:22 ` [PATCH 10/12 v2] tracing: Do not disable tracing when reading the trace file Steven Rostedt
2020-03-19 23:22 ` [PATCH 11/12 v2] ring-buffer/tracing: Have iterator acknowledge dropped events Steven Rostedt
2020-03-19 23:22 ` [PATCH 12/12 v2] tracing: Have the document reflect that the trace file keeps tracing enabled Steven Rostedt
2020-03-21 19:13 ` [PATCH 00/12 v2] ring-buffer/tracing: Remove disabling of ring buffer while reading trace file David Laight
2020-03-22 18:07   ` Steven Rostedt
2020-03-27  1:46   ` Steven Rostedt
2020-03-27 10:07     ` David Laight
2020-03-27 14:30       ` Steven Rostedt [this message]
2020-03-27 14:56         ` David Laight

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