linux-kernel - [PATCH 0/3 V2] ring-buffer: Restructure ftrace ring buffer time keeping to allow accurate nested timing

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Message-ID: <20200629025224.485251097@goodmis.org>
Date:   Sun, 28 Jun 2020 22:52:24 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Yordan Karadzhov <y.karadz@...il.com>,
        Tzvetomir Stoyanov <tz.stoyanov@...il.com>,
        Tom Zanussi <zanussi@...nel.org>,
        Jason Behmer <jbehmer@...gle.com>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Clark Williams <williams@...hat.com>,
        bristot <bristot@...hat.com>, Daniel Wagner <wagi@...om.org>,
        Darren Hart <dvhart@...are.com>,
        Jonathan Corbet <corbet@....net>,
        "Suresh E. Warrier" <warrier@...ux.vnet.ibm.com>
Subject: [PATCH 0/3 V2] ring-buffer: Restructure ftrace ring buffer time keeping to allow accurate nested timing


V1 of this patch set can be found here:

 https://lore.kernel.org/r/20200627010041.517736087@goodmis.org

Changes since V1 patch set:

 - Fixed white space issues (kernel test robot)
 - Fixed change log algorithm to match the code (Masami Hiramatsu)
 - Removed next_write useless code. (Masami Hiramatsu)


Head SHA1: 72c27b3e97be0b2fca6b5518d299bccbc714a245


Steven Rostedt (VMware) (3):
      ring-buffer: Have nested events still record running time stamp
      ring-buffer: Incorporate absolute timestamp into add_timestamp logic
      ring-buffer: Add rb_time_t 64 bit operations for speeding up 32 bit

----
 kernel/trace/ring_buffer.c | 498 ++++++++++++++++++++++++++++++++++++---------
 1 file changed, 401 insertions(+), 97 deletions(-)