# Monitor the system for dropped packets and proudce a report of drop locations and counts # SPDX-License-Identifier: GPL-2.0 from __future__ import print_function import os import sys 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 Util import * drop_log = {} kallsyms = [] def get_kallsyms_table(): global kallsyms try: f = open("/proc/kallsyms", "r") except: return for line in f: loc = int(line.split()[0], 16) name = line.split()[2] kallsyms.append((loc, name)) kallsyms.sort() def get_sym(sloc): loc = int(sloc) # Invariant: kallsyms[i][0] <= loc for all 0 <= i <= start # kallsyms[i][0] > loc for all end <= i < len(kallsyms) start, end = -1, len(kallsyms) while end != start + 1: pivot = (start + end) // 2 if loc < kallsyms[pivot][0]: end = pivot else: start = pivot # Now (start == -1 or kallsyms[start][0] <= loc) # and (start == len(kallsyms) - 1 or loc < kallsyms[start + 1][0]) if start >= 0: symloc, name = kallsyms[start] return (name, loc - symloc) else: return (None, 0) def print_drop_table(): print("%25s %25s %25s" % ("LOCATION", "OFFSET", "COUNT")) for i in drop_log.keys(): (sym, off) = get_sym(i) if sym == None: sym = i print("%25s %25s %25s" % (sym, off, drop_log[i])) def trace_begin(): print("Starting trace (Ctrl-C to dump results)") def trace_end(): print("Gathering kallsyms data") get_kallsyms_table() print_drop_table() # called from perf, when it finds a correspoinding event def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm, callchain, skbaddr, location, protocol): slocation = str(location) try: drop_log[slocation] = drop_log[slocation] + 1 except: drop_log[slocation] = 1 /option> Hosts the 0x221E linux distro kernel.Ubuntu
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path: root/arch/sparc/kernel/signal_32.c
AgeCommit message (Expand)Author
2012-05-11sparc32: drop test for sun4c in signal_32Sam Ravnborg
2012-03-28Disintegrate asm/system.h for SparcDavid Howells
2012-03-21sparc: use block_sigmask()Matt Fleming
2011-11-15sparc: Stash orig_i0 into %g6 instead of %g2David S. Miller
2011-11-14sparc: Fix handling of orig_i0 wrt. debugging when restarting syscalls.David S. Miller
2011-10-12sparc: Avoid calling sigprocmask()David S. Miller
2011-10-12sparc: Use set_current_blocked()Matt Fleming
2011-08-20sparc: Allow handling signals when stack is corrupted.David S. Miller
2010-09-21sparc: Prevent no-handler signal syscall restart recursion.David S. Miller
2010-09-21sparc: Don't mask signal when we can't setup signal frame.David S. Miller
2010-02-09sparc: Align clone and signal stacks to 16 bytes.David S. Miller
2009-09-02KEYS: Add a keyctl to install a process's session keyring on its parent [try #6]David Howells