From: Tingwei Zhang <tingwei@codeaurora.org>
To: Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Tingwei Zhang <tingwei@codeaurora.org>,
tsoni@codeaurora.org,
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Mao Jinlong <jinlmao@codeaurora.org>,
linux-kernel@vger.kernel.org, coresight@lists.linaro.org
Subject: [PATCH v3 0/6] tracing: export event trace and trace_marker
Date: Thu, 13 Aug 2020 09:45:46 +0800 [thread overview]
Message-ID: <20200813014552.23539-1-tingwei@codeaurora.org> (raw)
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)
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 reply other threads:[~2020-08-13 1:47 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-13 1:45 Tingwei Zhang [this message]
2020-08-13 1:45 ` [PATCH v3 1/6] stm class: ftrace: change dependency to TRACING Tingwei Zhang
2020-08-13 1:45 ` [PATCH v3 2/6] tracing: add flag to control different traces Tingwei Zhang
2020-08-13 1:45 ` [PATCH v3 3/6] tracing: add trace_export support for event trace Tingwei Zhang
2020-08-13 1:45 ` [PATCH v3 4/6] tracing: add trace_export support for trace_marker Tingwei Zhang
2020-08-13 1:45 ` [PATCH v3 5/6] stm class: ftrace: enable supported trace export flag Tingwei Zhang
2020-08-13 1:45 ` [PATCH v3 6/6] stm class: ftrace: use different channel accroding to CPU Tingwei Zhang
2020-09-01 6:37 ` [PATCH v3 0/6] tracing: export event trace and trace_marker 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
-- strict thread matches above, loose matches on Subject: below --
2020-09-03 0:17 Tingwei Zhang
2020-09-14 23:27 ` Tingwei Zhang
2020-09-18 14:26 ` Alexander Shishkin
2020-08-11 3:57 Tingwei Zhang
2020-08-12 16:49 ` Mathieu Poirier
2020-08-13 1:47 ` Tingwei Zhang
2020-07-28 1:33 Tingwei Zhang
2020-08-11 3:04 ` Tingwei Zhang
2020-08-11 3:19 ` Steven Rostedt
[not found] ` <20200811034946.GA9338@codeaurora.org>
[not found] ` <20200811000333.5d24b16f@oasis.local.home>
2020-08-11 6:45 ` Tingwei Zhang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200813014552.23539-1-tingwei@codeaurora.org \
--to=tingwei@codeaurora.org \
--cc=alexander.shishkin@linux.intel.com \
--cc=coresight@lists.linaro.org \
--cc=jinlmao@codeaurora.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mathieu.poirier@linaro.org \
--cc=mingo@redhat.com \
--cc=rostedt@goodmis.org \
--cc=saiprakash.ranjan@codeaurora.org \
--cc=suzuki.poulose@arm.com \
--cc=tsoni@codeaurora.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox