From: Tingwei Zhang <tingweiz@codeaurora.org>
To: Tingwei Zhang <tingwei@codeaurora.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>,
tsoni@codeaurora.org,
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Mao Jinlong <jinlmao@codeaurora.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/6] tracing: export event trace and trace_marker
Date: Tue, 11 Aug 2020 11:04:18 +0800 [thread overview]
Message-ID: <20200811030418.GA1893@codeaurora.org> (raw)
In-Reply-To: <20200728013359.2326-1-tingwei@codeaurora.org>
Hi Steven,
On Tue, Jul 28, 2020 at 09:33:53AM +0800, Tingwei Zhang wrote:
> Ftrace has ability to export trace packets to other destination.
> Currently, only function trace can be exported. This series extends the
> support to event trace and trace_maker. STM is one possible destination to
> export ftrace. Use separate channel for each CPU to avoid mixing up
> packets
> from different CPUs together.
>
> Change from v2:
> Change flag definition to BIT(). (Steven)
> Add comment in stm_ftrace_write() to clarify it's safe to use
> smp_processor_id() here since preempt is disabled. (Steven)
Thanks for your comments, Steven. I've addressed all your comments in v3.
Do you have more comments on v3? Is there anything I need to do to merge
this series to Linux Kernel?
>
> Change from v1:
> All changes are suggested by Steven Rostedt.
> User separate flag to control function trace, event trace and trace mark.
> Allocate channels according to num_possible_cpu() dynamically.
> Move ftrace_exports routines up so all ftrace can use them.
>
> Tingwei Zhang (6):
> stm class: ftrace: change dependency to TRACING
> tracing: add flag to control different traces
> tracing: add trace_export support for event trace
> tracing: add trace_export support for trace_marker
> stm class: ftrace: enable supported trace export flag
> stm class: ftrace: use different channel accroding to CPU
>
> drivers/hwtracing/stm/Kconfig | 2 +-
> drivers/hwtracing/stm/ftrace.c | 7 +-
> include/linux/trace.h | 7 +
> kernel/trace/trace.c | 270 ++++++++++++++++++---------------
> 4 files changed, 159 insertions(+), 127 deletions(-)
>
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
next prev parent reply other threads:[~2020-08-11 3:04 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-28 1:33 [PATCH v3 0/6] tracing: export event trace and trace_marker Tingwei Zhang
2020-07-28 1:33 ` [PATCH v3 1/6] stm class: ftrace: change dependency to TRACING Tingwei Zhang
2020-07-28 1:33 ` [PATCH v3 2/6] tracing: add flag to control different traces Tingwei Zhang
2020-07-28 1:33 ` [PATCH v3 3/6] tracing: add trace_export support for event trace Tingwei Zhang
2020-07-28 1:33 ` [PATCH v3 4/6] tracing: add trace_export support for trace_marker Tingwei Zhang
2020-07-28 1:33 ` [PATCH v3 5/6] stm class: ftrace: enable supported trace export flag Tingwei Zhang
2020-07-28 1:33 ` [PATCH v3 6/6] stm class: ftrace: use different channel accroding to CPU Tingwei Zhang
2020-08-11 3:04 ` Tingwei Zhang [this message]
2020-08-11 3:19 ` [PATCH v3 0/6] tracing: export event trace and trace_marker Steven Rostedt
[not found] ` <20200811034946.GA9338@codeaurora.org>
[not found] ` <20200811000333.5d24b16f@oasis.local.home>
2020-08-11 6:45 ` Tingwei Zhang
2020-08-11 3:57 Tingwei Zhang
2020-08-12 16:49 ` Mathieu Poirier
2020-08-13 1:47 ` Tingwei Zhang
2020-08-13 1:45 Tingwei Zhang
2020-09-01 6:37 ` Tingwei Zhang
2020-09-01 17:05 ` Mathieu Poirier
2020-09-01 23:25 ` Tingwei Zhang
2020-09-01 23:28 ` Tingwei Zhang
2020-09-14 22:43 ` Steven Rostedt
2020-09-14 23:24 ` Tingwei Zhang
2020-09-03 0:17 Tingwei Zhang
2020-09-14 23:27 ` Tingwei Zhang
2020-09-18 14:26 ` Alexander Shishkin
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