linux-kernel - [PATCH -next] PM: tools: add "CPU killed" timeline on arm64 platform

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Message-Id: <20230223044550.339811-1-luoxueqin@kylinos.cn>
Date:   Thu, 23 Feb 2023 12:45:50 +0800
From:   Xueqin Luo <luoxueqin@...inos.cn>
To:     todd.e.brandt@...ux.intel.com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Xueqin Luo <luoxueqin@...inos.cn>
Subject: [PATCH -next] PM: tools: add "CPU killed" timeline on arm64 platform

On the arm64 platform, the core log of cpu offline is as follows:

[  100.431501] CPU1: shutdown
[  100.454820] psci: CPU1 killed (polled 20 ms)
[  100.459266] CPU2: shutdown
[  100.482575] psci: CPU2 killed (polled 20 ms)
[  100.486057] CPU3: shutdown
[  100.513974] psci: CPU3 killed (polled 28 ms)
[  100.518068] CPU4: shutdown
[  100.541481] psci: CPU4 killed (polled 24 ms)

'smpboot: CPU (?P<cpu>[0-9]*) is now offline' cannot be applied
to the arm64 platform, which caused the loss of the suspend
machine stage in S3. Here I added core code to fix this issue.

Signed-off-by: Xueqin Luo <luoxueqin@...inos.cn>
---
 tools/power/pm-graph/sleepgraph.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/power/pm-graph/sleepgraph.py b/tools/power/pm-graph/sleepgraph.py
index 82c09cd25cc2..d816970b0a3d 100755
--- a/tools/power/pm-graph/sleepgraph.py
+++ b/tools/power/pm-graph/sleepgraph.py
@@ -4132,9 +4132,12 @@ def parseKernelLog(data):
 			elif(re.match('Enabling non-boot CPUs .*', msg)):
 				# start of first cpu resume
 				cpu_start = ktime
-			elif(re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)):
+			elif(re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)) \
+				or re.match('psci: CPU(?P<cpu>[0-9]*) killed.*', msg)):
 				# end of a cpu suspend, start of the next
 				m = re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)
+				if(not m):
+					m = re.match('psci: CPU(?P<cpu>[0-9]*) killed.*', msg)
 				cpu = 'CPU'+m.group('cpu')
 				if(cpu not in actions):
 					actions[cpu] = []
-- 
2.25.1