#!/usr/bin/perl -w # # stackcollapse-bpftrace.pl collapse bpftrace samples into single lines. # # USAGE ./stackcollapse-bpftrace.pl infile > outfile # # Example input: # # @[ # _raw_spin_lock_bh+0 # tcp_recvmsg+808 # inet_recvmsg+81 # sock_recvmsg+67 # sock_read_iter+144 # new_sync_read+228 # __vfs_read+41 # vfs_read+142 # sys_read+85 # do_syscall_64+115 # entry_SYSCALL_64_after_hwframe+61 # ]: 3 # # Example output: # # entry_SYSCALL_64_after_hwframe+61;do_syscall_64+115;sys_read+85;vfs_read+142;__vfs_read+41;new_sync_read+228;sock_read_iter+144;sock_recvmsg+67;inet_recvmsg+81;tcp_recvmsg+808;_raw_spin_lock_bh+0 3 # # Copyright 2018 Peter Sanford. All rights reserved. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software Foundation, # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # # (http://www.gnu.org/copyleft/gpl.html) # use strict; my @stack; my $in_stack = 0; foreach (<>) { chomp; if (!$in_stack) { if (/^@\[/) { $in_stack = 1; } } else { if (m/^\]: (\d+)/) { print join(';', reverse(@stack)) . " $1\n"; $in_stack = 0; @stack = (); } else { push(@stack, $_); } } }