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Message-ID: <CAJZ5v0i9F4JUyxAU49=HwZFdv0MZNTeU=F2PdTf-GspCy4OS+w@mail.gmail.com>
Date: Tue, 15 Oct 2024 21:22:54 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Todd Brandt <todd.e.brandt@...el.com>
Cc: linux-pm@...r.kernel.org, rafael.j.wysocki@...el.com, rjw@...ysocki.net,
linux-kernel@...r.kernel.org, todd.e.brandt@...ux.intel.com
Subject: Re: [PATCH] pm-graph v5.13
On Thu, Sep 12, 2024 at 8:00 AM Todd Brandt <todd.e.brandt@...el.com> wrote:
>
> - fix link to pm-graph homepage and in comments
> - add usleep_range kprobe to -dev mode
> - add SIGUSR1 and SIGUSR2 to list of captured signals
> - kill -s USR1 causes sleepgraph to print out stack trace
> - kill -s USR2 prints stack trace and exits
> - stack trace is also printed to -result file
> - add legacy support for /sys/kernel/debug/tracing/
> - allow multiple instances of trace funcs in the same phase
> - update javascript to draw device detail for multiple trace func instances
> - add -debugtiming option to print out timestamps on all outputs
>
> Signed-off-by: Todd Brandt <todd.e.brandt@...el.com>
> ---
> tools/power/pm-graph/sleepgraph.8 | 3 ++
> tools/power/pm-graph/sleepgraph.py | 59 ++++++++++++++++++++++--------
> 2 files changed, 47 insertions(+), 15 deletions(-)
>
> diff --git a/tools/power/pm-graph/sleepgraph.8 b/tools/power/pm-graph/sleepgraph.8
> index 643271b6fc6f..491ca21dccdb 100644
> --- a/tools/power/pm-graph/sleepgraph.8
> +++ b/tools/power/pm-graph/sleepgraph.8
> @@ -81,6 +81,9 @@ as resume failures.
> .TP
> \fB-wifitrace\fR
> Trace through the wifi reconnect time and include it in the timeline.
> +.TP
> +\fB-debugtiming\fR
> +Add timestamp to each printed output line, accurate to the millisecond.
>
> .SS "advanced"
> .TP
> diff --git a/tools/power/pm-graph/sleepgraph.py b/tools/power/pm-graph/sleepgraph.py
> index ef87e63c05c7..918eae58b0b4 100755
> --- a/tools/power/pm-graph/sleepgraph.py
> +++ b/tools/power/pm-graph/sleepgraph.py
> @@ -18,7 +18,7 @@
> #
> # Links:
> # Home Page
> -# https://01.org/pm-graph
> +# https://www.intel.com/content/www/us/en/developer/topic-technology/open/pm-graph/overview.html
> # Source repo
> # git@...hub.com:intel/pm-graph
> #
> @@ -65,6 +65,7 @@ import gzip
> from threading import Thread
> from subprocess import call, Popen, PIPE
> import base64
> +import traceback
>
> debugtiming = False
> mystarttime = time.time()
> @@ -86,7 +87,7 @@ def ascii(text):
> # store system values and test parameters
> class SystemValues:
> title = 'SleepGraph'
> - version = '5.12'
> + version = '5.13'
> ansi = False
> rs = 0
> display = ''
> @@ -236,7 +237,11 @@ class SystemValues:
> 'msleep': { 'args_x86_64': {'time':'%di:s32'}, 'ub': 1 },
> 'schedule_timeout': { 'args_x86_64': {'timeout':'%di:s32'}, 'ub': 1 },
> 'udelay': { 'func':'__const_udelay', 'args_x86_64': {'loops':'%di:s32'}, 'ub': 1 },
> - 'usleep_range': { 'args_x86_64': {'min':'%di:s32', 'max':'%si:s32'}, 'ub': 1 },
> + 'usleep_range': {
> + 'func':'usleep_range_state',
> + 'args_x86_64': {'min':'%di:s32', 'max':'%si:s32'},
> + 'ub': 1
> + },
> 'mutex_lock_slowpath': { 'func':'__mutex_lock_slowpath', 'ub': 1 },
> 'acpi_os_stall': {'ub': 1},
> 'rt_mutex_slowlock': {'ub': 1},
> @@ -342,15 +347,21 @@ class SystemValues:
> if self.verbose or msg.startswith('WARNING:'):
> pprint(msg)
> def signalHandler(self, signum, frame):
> - if not self.result:
> - return
> signame = self.signames[signum] if signum in self.signames else 'UNKNOWN'
> - msg = 'Signal %s caused a tool exit, line %d' % (signame, frame.f_lineno)
> + if signame in ['SIGUSR1', 'SIGUSR2', 'SIGSEGV']:
> + traceback.print_stack()
> + stack = traceback.format_list(traceback.extract_stack())
> + self.outputResult({'stack':stack})
> + if signame == 'SIGUSR1':
> + return
> + msg = '%s caused a tool exit, line %d' % (signame, frame.f_lineno)
> + pprint(msg)
> self.outputResult({'error':msg})
> + os.kill(os.getpid(), signal.SIGKILL)
> sys.exit(3)
> def signalHandlerInit(self):
> capture = ['BUS', 'SYS', 'XCPU', 'XFSZ', 'PWR', 'HUP', 'INT', 'QUIT',
> - 'ILL', 'ABRT', 'FPE', 'SEGV', 'TERM']
> + 'ILL', 'ABRT', 'FPE', 'SEGV', 'TERM', 'USR1', 'USR2']
> self.signames = dict()
> for i in capture:
> s = 'SIG'+i
> @@ -859,6 +870,11 @@ class SystemValues:
> # files needed for any trace data
> files = ['buffer_size_kb', 'current_tracer', 'trace', 'trace_clock',
> 'trace_marker', 'trace_options', 'tracing_on']
> + # legacy check for old systems
> + if not os.path.exists(self.tpath+'trace'):
> + self.tpath = '/sys/kernel/debug/tracing/'
> + if not os.path.exists(self.epath):
> + self.epath = '/sys/kernel/debug/tracing/events/power/'
> # files needed for callgraph trace data
> tp = self.tpath
> if(self.usecallgraph):
> @@ -911,6 +927,13 @@ class SystemValues:
> if num > 0:
> n = '%d' % num
> fp = open(self.result, 'a')
> + if 'stack' in testdata:
> + fp.write('Printing stack trace:\n')
> + for line in testdata['stack']:
> + fp.write(line)
> + fp.close()
> + self.sudoUserchown(self.result)
> + return
> if 'error' in testdata:
> fp.write('result%s: fail\n' % n)
> fp.write('error%s: %s\n' % (n, testdata['error']))
> @@ -1980,7 +2003,7 @@ class Data:
> length = -1.0
> if(start >= 0 and end >= 0):
> length = end - start
> - if pid == -2 or name not in sysvals.tracefuncs.keys():
> + if pid >= -2:
> i = 2
> origname = name
> while(name in list):
> @@ -2753,7 +2776,8 @@ class Timeline:
> def createHeader(self, sv, stamp):
> if(not stamp['time']):
> return
> - self.html += '<div class="version"><a href="https://01.org/pm-graph">%s v%s</a></div>' \
> + self.html += '<div class="version"><a href="https://www.intel.com/content/www/'+\
> + 'us/en/developer/topic-technology/open/pm-graph/overview.html">%s v%s</a></div>' \
> % (sv.title, sv.version)
> if sv.logmsg and sv.testlog:
> self.html += '<button id="showtest" class="logbtn btnfmt">log</button>'
> @@ -5238,12 +5262,16 @@ def addScriptCode(hf, testruns):
> }
> var info = dev[i].title.split(" ");
> var pname = info[info.length-1];
> - pd[pname] = parseFloat(info[info.length-3].slice(1));
> - total[0] += pd[pname];
> + var length = parseFloat(info[info.length-3].slice(1));
> + if (pname in pd)
> + pd[pname] += length;
> + else
> + pd[pname] = length;
> + total[0] += length;
> if(pname.indexOf("suspend") >= 0)
> - total[tidx] += pd[pname];
> + total[tidx] += length;
> else
> - total[tidx+1] += pd[pname];
> + total[tidx+1] += length;
> }
> }
> var devname = deviceTitle(this.title, total, cpu);
> @@ -5262,7 +5290,7 @@ def addScriptCode(hf, testruns):
> phases[i].style.left = left+"%";
> phases[i].title = phases[i].id+" "+pd[phases[i].id]+" ms";
> left += w;
> - var time = "<t4 style=\"font-size:"+fs+"px\">"+pd[phases[i].id]+" ms<br></t4>";
> + var time = "<t4 style=\"font-size:"+fs+"px\">"+pd[phases[i].id].toFixed(3)+" ms<br></t4>";
> var pname = "<t3 style=\"font-size:"+fs2+"px\">"+phases[i].id.replace(new RegExp("_", "g"), " ")+"</t3>";
> phases[i].innerHTML = time+pname;
> } else {
> @@ -6742,6 +6770,7 @@ def printHelp():
> ' -wifi If a wifi connection is available, check that it reconnects after resume.\n'\
> ' -wifitrace Trace kernel execution through wifi reconnect.\n'\
> ' -netfix Use netfix to reset the network in the event it fails to resume.\n'\
> + ' -debugtiming Add timestamp to each printed line\n'\
> ' [testprep]\n'\
> ' -sync Sync the filesystems before starting the test\n'\
> ' -rs on/off Enable/disable runtime suspend for all devices, restore all after test\n'\
> @@ -7047,7 +7076,6 @@ if __name__ == '__main__':
> except:
> doError('No result file supplied', True)
> sysvals.result = val
> - sysvals.signalHandlerInit()
> else:
> doError('Invalid argument: '+arg, True)
>
> @@ -7057,6 +7085,7 @@ if __name__ == '__main__':
> if(sysvals.usecallgraph and sysvals.useprocmon):
> doError('-proc is not compatible with -f')
>
> + sysvals.signalHandlerInit()
> if sysvals.usecallgraph and sysvals.cgskip:
> sysvals.vprint('Using cgskip file: %s' % sysvals.cgskip)
> sysvals.setCallgraphBlacklist(sysvals.cgskip)
> --
Applied as 6.13 material, thanks!
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