ACIL FM

Nama	Ukuran	Aksi
clk.py	2.46 MB	View DL Edit
config.py	1.27 MB	View DL Edit
constants.py.in	3.15 MB	View DL Edit
cpus.py	5.2 MB	View DL Edit
device.py	5.65 MB	View DL Edit
dmesg.py	5.82 MB	View DL Edit
genpd.py	2.52 MB	View DL Edit
lists.py	4.16 MB	View DL Edit
Makefile	667 B	View DL Edit
mm.py	13.98 MB	View DL Edit
modules.py	2.75 MB	View DL Edit
pgtable.py	10.08 MB	View DL Edit
proc.py	8.54 MB	View DL Edit
rbtree.py	4.25 MB	View DL Edit
symbols.py	6.92 MB	View DL Edit
tasks.py	3.55 MB	View DL Edit
timerlist.py	7.55 MB	View DL Edit
utils.py	5.03 MB	View DL Edit
__init__.py	55 B	View DL Edit

Edit file: /usr/src/kernels/5.14.0-611.27.1.el9_7.x86_64/scripts/gdb/linux/timerlist.py

# SPDX-License-Identifier: GPL-2.0
#
# Copyright 2019 Google LLC.

import binascii
import gdb

from linux import constants
from linux import cpus
from linux import rbtree
from linux import utils

timerqueue_node_type = utils.CachedType("struct timerqueue_node").get_type()
hrtimer_type = utils.CachedType("struct hrtimer").get_type()

def ktime_get():
    """Returns the current time, but not very accurately

We can't read the hardware timer itself to add any nanoseconds
    that need to be added since we last stored the time in the
    timekeeper. But this is probably good enough for debug purposes."""
    tk_core = gdb.parse_and_eval("&tk_core")

return tk_core['timekeeper']['tkr_mono']['base']

def print_timer(rb_node, idx):
    timerqueue = utils.container_of(rb_node, timerqueue_node_type.pointer(),
                                    "node")
    timer = utils.container_of(timerqueue, hrtimer_type.pointer(), "node")

function = str(timer['function']).split(" ")[1].strip("<>")
    softexpires = timer['_softexpires']
    expires = timer['node']['expires']
    now = ktime_get()

text = " #{}: <{}>, {}, ".format(idx, timer, function)
    text += "S:{:02x}\n".format(int(timer['state']))
    text += " # expires at {}-{} nsecs [in {} to {} nsecs]\n".format(
            softexpires, expires, softexpires - now, expires - now)
    return text

def print_active_timers(base):
    curr = base['active']['next']['node']
    curr = curr.address.cast(rbtree.rb_node_type.get_type().pointer())
    idx = 0
    while curr:
        yield print_timer(curr, idx)
        curr = rbtree.rb_next(curr)
        idx += 1

def print_base(base):
    text = " .base:       {}\n".format(base.address)
    text += " .index:      {}\n".format(base['index'])

text += " .resolution: {} nsecs\n".format(constants.LX_hrtimer_resolution)

text += " .get_time:   {}\n".format(base['get_time'])
    if constants.LX_CONFIG_HIGH_RES_TIMERS:
        text += "  .offset:     {} nsecs\n".format(base['offset'])
    text += "active timers:\n"
    text += "".join([x for x in print_active_timers(base)])
    return text

def print_cpu(hrtimer_bases, cpu, max_clock_bases):
    cpu_base = cpus.per_cpu(hrtimer_bases, cpu)
    jiffies = gdb.parse_and_eval("jiffies_64")
    tick_sched_ptr = gdb.parse_and_eval("&tick_cpu_sched")
    ts = cpus.per_cpu(tick_sched_ptr, cpu)

text = "cpu: {}\n".format(cpu)
    for i in xrange(max_clock_bases):
        text += " clock {}:\n".format(i)
        text += print_base(cpu_base['clock_base'][i])

if constants.LX_CONFIG_HIGH_RES_TIMERS:
            fmts = [("  .{}   : {} nsecs", 'expires_next'),
                    ("  .{}    : {}", 'hres_active'),
                    ("  .{}      : {}", 'nr_events'),
                    ("  .{}     : {}", 'nr_retries'),
                    ("  .{}       : {}", 'nr_hangs'),
                    ("  .{}  : {}", 'max_hang_time')]
            text += "\n".join([s.format(f, cpu_base[f]) for s, f in fmts])
            text += "\n"

if constants.LX_CONFIG_TICK_ONESHOT:
            fmts = [("  .{}      : {}", 'nohz_mode'),
                    ("  .{}      : {} nsecs", 'last_tick'),
                    ("  .{}   : {}", 'tick_stopped'),
                    ("  .{}   : {}", 'idle_jiffies'),
                    ("  .{}     : {}", 'idle_calls'),
                    ("  .{}    : {}", 'idle_sleeps'),
                    ("  .{} : {} nsecs", 'idle_entrytime'),
                    ("  .{}  : {} nsecs", 'idle_waketime'),
                    ("  .{}  : {} nsecs", 'idle_exittime'),
                    ("  .{} : {} nsecs", 'idle_sleeptime'),
                    ("  .{}: {} nsecs", 'iowait_sleeptime'),
                    ("  .{}   : {}", 'last_jiffies'),
                    ("  .{}     : {}", 'next_timer'),
                    ("  .{}   : {} nsecs", 'idle_expires')]
            text += "\n".join([s.format(f, ts[f]) for s, f in fmts])
            text += "\njiffies: {}\n".format(jiffies)

text += "\n"

return text

def print_tickdevice(td, cpu):
    dev = td['evtdev']
    text = "Tick Device: mode:     {}\n".format(td['mode'])
    if cpu < 0:
            text += "Broadcast device\n"
    else:
            text += "Per CPU device: {}\n".format(cpu)

text += "Clock Event Device: "
    if dev == 0:
            text += "<NULL>\n"
            return text

text += "{}\n".format(dev['name'])
    text += " max_delta_ns:   {}\n".format(dev['max_delta_ns'])
    text += " min_delta_ns:   {}\n".format(dev['min_delta_ns'])
    text += " mult:           {}\n".format(dev['mult'])
    text += " shift:          {}\n".format(dev['shift'])
    text += " mode:           {}\n".format(dev['state_use_accessors'])
    text += " next_event:     {} nsecs\n".format(dev['next_event'])

text += " set_next_event: {}\n".format(dev['set_next_event'])

members = [('set_state_shutdown', " shutdown: {}\n"),
               ('set_state_periodic', " periodic: {}\n"),
               ('set_state_oneshot', " oneshot:  {}\n"),
               ('set_state_oneshot_stopped', " oneshot stopped: {}\n"),
               ('tick_resume', " resume:   {}\n")]
    for member, fmt in members:
        if dev[member]:
            text += fmt.format(dev[member])

text += " event_handler:  {}\n".format(dev['event_handler'])
    text += " retries:        {}\n".format(dev['retries'])

return text

def pr_cpumask(mask):
    nr_cpu_ids = 1
    if constants.LX_NR_CPUS > 1:
        nr_cpu_ids = gdb.parse_and_eval("nr_cpu_ids")

inf = gdb.inferiors()[0]
    bits = mask['bits']
    num_bytes = (nr_cpu_ids + 7) / 8
    buf = utils.read_memoryview(inf, bits, num_bytes).tobytes()
    buf = binascii.b2a_hex(buf)

chunks = []
    i = num_bytes
    while i > 0:
        i -= 1
        start = i * 2
        end = start + 2
        chunks.append(buf[start:end])
        if i != 0 and i % 4 == 0:
            chunks.append(',')

extra = nr_cpu_ids % 8
    if 0 < extra <= 4:
        chunks[0] = chunks[0][0]  # Cut off the first 0

return "".join(chunks)

class LxTimerList(gdb.Command):
    """Print /proc/timer_list"""

def __init__(self):
        super(LxTimerList, self).__init__("lx-timerlist", gdb.COMMAND_DATA)

def invoke(self, arg, from_tty):
        hrtimer_bases = gdb.parse_and_eval("&hrtimer_bases")
        max_clock_bases = gdb.parse_and_eval("HRTIMER_MAX_CLOCK_BASES")

text = "Timer List Version: gdb scripts\n"
        text += "HRTIMER_MAX_CLOCK_BASES: {}\n".format(max_clock_bases)
        text += "now at {} nsecs\n".format(ktime_get())

for cpu in cpus.each_online_cpu():
            text += print_cpu(hrtimer_bases, cpu, max_clock_bases)

if constants.LX_CONFIG_GENERIC_CLOCKEVENTS:
            if constants.LX_CONFIG_GENERIC_CLOCKEVENTS_BROADCAST:
                bc_dev = gdb.parse_and_eval("&tick_broadcast_device")
                text += print_tickdevice(bc_dev, -1)
                text += "\n"
                mask = gdb.parse_and_eval("tick_broadcast_mask")
                mask = pr_cpumask(mask)
                text += "tick_broadcast_mask: {}\n".format(mask)
                if constants.LX_CONFIG_TICK_ONESHOT:
                    mask = gdb.parse_and_eval("tick_broadcast_oneshot_mask")
                    mask = pr_cpumask(mask)
                    text += "tick_broadcast_oneshot_mask: {}\n".format(mask)
                text += "\n"

tick_cpu_devices = gdb.parse_and_eval("&tick_cpu_device")
            for cpu in cpus.each_online_cpu():
                tick_dev = cpus.per_cpu(tick_cpu_devices, cpu)
                text += print_tickdevice(tick_dev, cpu)
                text += "\n"

gdb.write(text)

LxTimerList()

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