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pm-graph: add flags support for RT kernel

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with PREEMPT_RT enabled in kernel, ftrace have a different
falgs compare with standard kernel. Add supported for
RT kernel ftrace flags format.

Signed-off-by: Liwei Song <liwei.song@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Liwei Song 2020-06-23 14:21:27 +08:00 committed by Khem Raj
parent 428d4e6885
commit 2719a80949
2 changed files with 43 additions and 0 deletions
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42
meta-oe/recipes-kernel/pm-graph/pm-graph/0001-sleepgraph-add-support-for-RT-kernel-ftrace-flags.patch Normal file
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@ -0,0 +1,42 @@
From 47a1db21f6c5d17c94c58c3fe0dcce35c623dbf4 Mon Sep 17 00:00:00 2001
From: Liwei Song <liwei.song@windriver.com>
Date: Tue, 23 Jun 2020 04:47:20 +0000
Subject: [PATCH] sleepgraph: add support for RT kernel ftrace flags
with PREEMPT_RT enabled in kernel, ftrace have a different
flags format:
_-----=> irqs-off
/ _----=> need-resched
| / _----=> need-resched
|| / _---=> hardirq/softirq
||| / _--=> preempt-depth
||||/ delay
TASK-PID CPU# ||||| TIMESTAMP FUNCTION
| | | ||||| | |
add support for this.
Upstream-Status: Submitted [https://github.com/intel/pm-graph/pull/18]
Signed-off-by: Liwei Song <liwei.song@windriver.com>
---
sleepgraph.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sleepgraph.py b/sleepgraph.py
index cfed8e09e0e6..561f165cf9be 100755
--- a/sleepgraph.py
+++ b/sleepgraph.py
@@ -2689,7 +2689,7 @@ class TestProps:
'[ +!#\*@$]*(?P<dur>[0-9\.]*) .*\| (?P<msg>.*)'
ftrace_line_fmt_nop = \
' *(?P<proc>.*)-(?P<pid>[0-9]*) *\[(?P<cpu>[0-9]*)\] *'+\
- '(?P<flags>.{4}) *(?P<time>[0-9\.]*): *'+\
+ '(?P<flags>.{4,7}) *(?P<time>[0-9\.]*): *'+\
'(?P<msg>.*)'
def __init__(self):
self.stamp = ''
--
2.24.1

1
meta-oe/recipes-kernel/pm-graph/pm-graph_5.5.bb
View File

@ -9,6 +9,7 @@ SRCREV = "cf59527dc24fdd2f314ae4dcaeb3d68a117988f6"
SRC_URI = "git://github.com/intel/pm-graph.git \
file://0001-Makefile-fix-multilib-build-failure.patch \
file://0001-sleepgraph.py-use-python3.patch \
file://0001-sleepgraph-add-support-for-RT-kernel-ftrace-flags.patch \
"
S = "${WORKDIR}/git"