# stackcollapse.py - format perf samples with one line per distinct call stack
# SPDX-License-Identifier: GPL-2.0
#
# This script's output has two space-separated fields.  The first is a semicolon
# separated stack including the program name (from the "comm" field) and the
# function names from the call stack.  The second is a count:
#
#  swapper;start_kernel;rest_init;cpu_idle;default_idle;native_safe_halt 2
#
# The file is sorted according to the first field.
#
# Input may be created and processed using:
#
#  perf record -a -g -F 99 sleep 60
#  perf script report stackcollapse > out.stacks-folded
#
# (perf script record stackcollapse works too).
#
# Written by Paolo Bonzini <pbonzini@redhat.com>
# Based on Brendan Gregg's stackcollapse-perf.pl script.

from __future__ import print_function

import os
import sys
from collections import defaultdict
from optparse import OptionParser, make_option

sys.path.append(os.environ['PERF_EXEC_PATH'] + \
    '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')

from perf_trace_context import *
from Core import *
from EventClass import *

# command line parsing

option_list = [
    # formatting options for the bottom entry of the stack
    make_option("--include-tid", dest="include_tid",
                 action="store_true", default=False,
                 help="include thread id in stack"),
    make_option("--include-pid", dest="include_pid",
                 action="store_true", default=False,
                 help="include process id in stack"),
    make_option("--no-comm", dest="include_comm",
                 action="store_false", default=True,
                 help="do not separate stacks according to comm"),
    make_option("--tidy-java", dest="tidy_java",
                 action="store_true", default=False,
                 help="beautify Java signatures"),
    make_option("--kernel", dest="annotate_kernel",
                 action="store_true", default=False,
                 help="annotate kernel functions with _[k]")
]

parser = OptionParser(option_list=option_list)
(opts, args) = parser.parse_args()

if len(args) != 0:
    parser.error("unexpected command line argument")
if opts.include_tid and not opts.include_comm:
    parser.error("requesting tid but not comm is invalid")
if opts.include_pid and not opts.include_comm:
    parser.error("requesting pid but not comm is invalid")

# event handlers

lines = defaultdict(lambda: 0)

def process_event(param_dict):
    def tidy_function_name(sym, dso):
        if sym is None:
            sym = '[unknown]'

        sym = sym.replace(';', ':')
        if opts.tidy_java:
            # the original stackcollapse-perf.pl script gives the
            # example of converting this:
            #    Lorg/mozilla/javascript/MemberBox;.<init>(Ljava/lang/reflect/Method;)V
            # to this:
            #    org/mozilla/javascript/MemberBox:.init
            sym = sym.replace('<', '')
            sym = sym.replace('>', '')
            if sym[0] == 'L' and sym.find('/'):
                sym = sym[1:]
            try:
                sym = sym[:sym.index('(')]
            except ValueError:
                pass

        if opts.annotate_kernel and dso == '[kernel.kallsyms]':
            return sym + '_[k]'
        else:
            return sym

    stack = list()
    if 'callchain' in param_dict:
        for entry in param_dict['callchain']:
            entry.setdefault('sym', dict())
            entry['sym'].setdefault('name', None)
            entry.setdefault('dso', None)
            stack.append(tidy_function_name(entry['sym']['name'],
                                            entry['dso']))
    else:
        param_dict.setdefault('symbol', None)
        param_dict.setdefault('dso', None)
        stack.append(tidy_function_name(param_dict['symbol'],
                                        param_dict['dso']))

    if opts.include_comm:
        comm = param_dict["comm"].replace(' ', '_')
        sep = "-"
        if opts.include_pid:
            comm = comm + sep + str(param_dict['sample']['pid'])
            sep = "/"
        if opts.include_tid:
            comm = comm + sep + str(param_dict['sample']['tid'])
        stack.append(comm)

    stack_string = ';'.join(reversed(stack))
    lines[stack_string] = lines[stack_string] + 1

def trace_end():
    list = sorted(lines)
    for stack in list:
        print("%s %d" % (stack, lines[stack]))
y.shevchenko@linux.intel.com&gt;
Signed-off-by: Lv Zheng &lt;lv.zheng@intel.com&gt;
[rjw: Subject and changelog]
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ACPI: Clean up inclusions of ACPI header files</title>
<updated>2013-12-07T00:03:14+00:00</updated>
<author>
<name>Lv Zheng</name>
<email>lv.zheng@intel.com</email>
</author>
<published>2013-12-03T00:49:16+00:00</published>
<link rel='alternate' type='text/html' href='http://git.arm.linux.org.uk/cgit/git.armlinux.org.uk/linux.git/commit/?id=8b48463f89429af408ff695244dc627e1acff4f7'/>
<id>8b48463f89429af408ff695244dc627e1acff4f7</id>
<content type='text'>
Replace direct inclusions of &lt;acpi/acpi.h&gt;, &lt;acpi/acpi_bus.h&gt; and
&lt;acpi/acpi_drivers.h&gt;, which are incorrect, with &lt;linux/acpi.h&gt;
inclusions and remove some inclusions of those files that aren't
necessary.

First of all, &lt;acpi/acpi.h&gt;, &lt;acpi/acpi_bus.h&gt; and &lt;acpi/acpi_drivers.h&gt;
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
&lt;linux/acpi.h&gt; includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.

Second, there are ordering dependencies between those files that always
have to be met.  Namely, it is required that &lt;acpi/acpi_bus.h&gt; be included
prior to &lt;acpi/acpi_drivers.h&gt; so that the acpi_pci_root declarations the
latter depends on are always there.  And &lt;acpi/acpi.h&gt; which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
&lt;linux/acpi.h&gt; as appropriate.

Signed-off-by: Lv Zheng &lt;lv.zheng@intel.com&gt;
Cc: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Cc: Matthew Garrett &lt;mjg59@srcf.ucam.org&gt;
Cc: Tony Luck &lt;tony.luck@intel.com&gt;
Cc: "H. Peter Anvin" &lt;hpa@zytor.com&gt;
Acked-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt; (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk &lt;konrad.wilk@oracle.com&gt; (Xen stuff)
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Replace direct inclusions of &lt;acpi/acpi.h&gt;, &lt;acpi/acpi_bus.h&gt; and
&lt;acpi/acpi_drivers.h&gt;, which are incorrect, with &lt;linux/acpi.h&gt;
inclusions and remove some inclusions of those files that aren't
necessary.

First of all, &lt;acpi/acpi.h&gt;, &lt;acpi/acpi_bus.h&gt; and &lt;acpi/acpi_drivers.h&gt;
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
&lt;linux/acpi.h&gt; includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.

Second, there are ordering dependencies between those files that always
have to be met.  Namely, it is required that &lt;acpi/acpi_bus.h&gt; be included
prior to &lt;acpi/acpi_drivers.h&gt; so that the acpi_pci_root declarations the
latter depends on are always there.  And &lt;acpi/acpi.h&gt; which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
&lt;linux/acpi.h&gt; as appropriate.

Signed-off-by: Lv Zheng &lt;lv.zheng@intel.com&gt;
Cc: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Cc: Matthew Garrett &lt;mjg59@srcf.ucam.org&gt;
Cc: Tony Luck &lt;tony.luck@intel.com&gt;
Cc: "H. Peter Anvin" &lt;hpa@zytor.com&gt;
Acked-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt; (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk &lt;konrad.wilk@oracle.com&gt; (Xen stuff)
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ACPI: mark acpi_sfi_table_parse() as __init</title>
<updated>2012-06-22T21:36:44+00:00</updated>
<author>
<name>Jiang Liu</name>
<email>jiang.liu@huawei.com</email>
</author>
<published>2012-06-22T06:55:21+00:00</published>
<link rel='alternate' type='text/html' href='http://git.arm.linux.org.uk/cgit/git.armlinux.org.uk/linux.git/commit/?id=397038519f2c2ac68c125c0cd766e91041c52b30'/>
<id>397038519f2c2ac68c125c0cd766e91041c52b30</id>
<content type='text'>
Mark function acpi_sfi_table_parse() as __init to avoid warning messages:

WARNING: vmlinux.o(.text+0x4cd2d2): Section mismatch in reference from the
function acpi_sfi_table_parse.clone.0() to the function

Function acpi_sfi_table_parse() calls acpi_table_parse() and
pci_parse_mcfg(), which are both marked as __init.  Currently
acpi_sfi_table_parse() is only used by MMCONFIG to scan MCFG table
at boot time only, so it's safe to mark acpi_sfi_table_parse() as __init.

Reviewed-by: Yinghai Lu &lt;yinghai@kernel.org&gt;
Signed-off-by: Jiang Liu &lt;liuj97@gmail.com&gt;
Signed-off-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt;</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Mark function acpi_sfi_table_parse() as __init to avoid warning messages:

WARNING: vmlinux.o(.text+0x4cd2d2): Section mismatch in reference from the
function acpi_sfi_table_parse.clone.0() to the function

Function acpi_sfi_table_parse() calls acpi_table_parse() and
pci_parse_mcfg(), which are both marked as __init.  Currently
acpi_sfi_table_parse() is only used by MMCONFIG to scan MCFG table
at boot time only, so it's safe to mark acpi_sfi_table_parse() as __init.

Reviewed-by: Yinghai Lu &lt;yinghai@kernel.org&gt;
Signed-off-by: Jiang Liu &lt;liuj97@gmail.com&gt;
Signed-off-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt;</pre>
</div>
</content>
</entry>
<entry>
<title>SFI: add capability to parse ACPI tables</title>
<updated>2009-08-28T23:57:33+00:00</updated>
<author>
<name>Feng Tang</name>
<email>feng.tang@intel.com</email>
</author>
<published>2009-08-14T19:17:53+00:00</published>
<link rel='alternate' type='text/html' href='http://git.arm.linux.org.uk/cgit/git.armlinux.org.uk/linux.git/commit/?id=13e82d023c4c3f13ab1e665cbb917a7ebba8935c'/>
<id>13e82d023c4c3f13ab1e665cbb917a7ebba8935c</id>
<content type='text'>
Extend SFI to access standard ACPI tables.
(eg. the PCI MCFG) using sfi_acpi_table_parse().

Note that this is _not_ a hybrid ACPI + SFI mode.
The platform boots in either ACPI mode or SFI mode.

SFI runs only with acpi_disabled=1, which can be set
at build-time via CONFIG_ACPI=n, or at boot time by
the failure to find ACPI platform support.

So this extension simply allows SFI-platforms to
re-use existing standard table formats that happen to
be defined to live in ACPI envelopes.

Signed-off-by: Feng Tang &lt;feng.tang@intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Extend SFI to access standard ACPI tables.
(eg. the PCI MCFG) using sfi_acpi_table_parse().

Note that this is _not_ a hybrid ACPI + SFI mode.
The platform boots in either ACPI mode or SFI mode.

SFI runs only with acpi_disabled=1, which can be set
at build-time via CONFIG_ACPI=n, or at boot time by
the failure to find ACPI platform support.

So this extension simply allows SFI-platforms to
re-use existing standard table formats that happen to
be defined to live in ACPI envelopes.

Signed-off-by: Feng Tang &lt;feng.tang@intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</pre>
</div>
</content>
</entry>