From: Tingwei Zhang <tingwei@codeaurora.org>
To: Steven Rostedt <rostedt@goodmis.org>, Ingo Molnar <mingo@redhat.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
Subject: [PATCH v2 0/6] tracing: export event trace and trace_marker
Date: Sun, 26 Jul 2020 10:59:25 +0800 [thread overview]
Message-ID: <20200726025931.30510-1-tingwei@codeaurora.org> (raw)
Ftrace has ability to export trace packets to other destionation. 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 seperate channel for each CPU to avoid mixing up packets from different
CPUs together.
Change from v1:
All changes are suggested by Steven Rostedt.
User seperate 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 | 6 +-
include/linux/trace.h | 7 +
kernel/trace/trace.c | 270 ++++++++++++++++++---------------
4 files changed, 158 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:[~2020-07-26 2:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-26 2:59 Tingwei Zhang [this message]
2020-07-26 2:59 ` [PATCH v2 1/6] stm class: ftrace: change dependency to TRACING Tingwei Zhang
2020-07-26 2:59 ` [PATCH v2 2/6] tracing: add flag to control different traces Tingwei Zhang
2020-07-27 18:45 ` Steven Rostedt
2020-07-28 0:29 ` Tingwei Zhang
2020-07-26 2:59 ` [PATCH v2 3/6] tracing: add trace_export support for event trace Tingwei Zhang
2020-07-26 2:59 ` [PATCH v2 4/6] tracing: add trace_export support for trace_marker Tingwei Zhang
2020-07-26 2:59 ` [PATCH v2 5/6] stm class: ftrace: enable supported trace export flag Tingwei Zhang
2020-07-26 2:59 ` [PATCH v2 6/6] stm class: ftrace: use different channel accroding to CPU Tingwei Zhang
2020-07-27 19:08 ` Steven Rostedt
2020-07-28 0:28 ` Tingwei Zhang
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