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perf trace: Add perf trace scripting support modules for Perl

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Add Perf-Trace-Util Perl module and some scripts that use it.
Core.pm contains Perl code to define and access flag and
symbolic fields. Util.pm contains general-purpose utility
functions.

Also adds some makefile bits to install them in
libexec/perf-core/scripts/perl (or wherever perfexec_instdir
points).

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259133352-23685-5-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tom Zanussi
2009-11-25 01:15:49 -06:00
committed by Ingo Molnar
parent 16c632de64
commit bcefe12eff
9 changed files with 806 additions and 0 deletions
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105
tools/perf/scripts/perl/rw-by-file.pl Normal file
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#!/usr/bin/perl -w
# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
# Licensed under the terms of the GNU GPL License version 2
# Display r/w activity for files read/written to for a given program
# The common_* event handler fields are the most useful fields common to
# all events. They don't necessarily correspond to the 'common_*' fields
# in the status files. Those fields not available as handler params can
# be retrieved via script functions of the form get_common_*().
use 5.010000;
use strict;
use warnings;
use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
use lib "./Perf-Trace-Util/lib";
use Perf::Trace::Core;
use Perf::Trace::Util;
# change this to the comm of the program you're interested in
my $for_comm = "perf";
my %reads;
my %writes;
sub syscalls::sys_enter_read
{
my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
$common_pid, $common_comm, $nr, $fd, $buf, $count) = @_;
if ($common_comm eq $for_comm) {
$reads{$fd}{bytes_requested} += $count;
$reads{$fd}{total_reads}++;
}
}
sub syscalls::sys_enter_write
{
my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
$common_pid, $common_comm, $nr, $fd, $buf, $count) = @_;
if ($common_comm eq $for_comm) {
$writes{$fd}{bytes_written} += $count;
$writes{$fd}{total_writes}++;
}
}
sub trace_end
{
printf("file read counts for $for_comm:\n\n");
printf("%6s %10s %10s\n", "fd", "# reads", "bytes_requested");
printf("%6s %10s %10s\n", "------", "----------", "-----------");
foreach my $fd (sort {$reads{$b}{bytes_requested} <=>
$reads{$a}{bytes_requested}} keys %reads) {
my $total_reads = $reads{$fd}{total_reads};
my $bytes_requested = $reads{$fd}{bytes_requested};
printf("%6u %10u %10u\n", $fd, $total_reads, $bytes_requested);
}
printf("\nfile write counts for $for_comm:\n\n");
printf("%6s %10s %10s\n", "fd", "# writes", "bytes_written");
printf("%6s %10s %10s\n", "------", "----------", "-----------");
foreach my $fd (sort {$writes{$b}{bytes_written} <=>
$writes{$a}{bytes_written}} keys %writes) {
my $total_writes = $writes{$fd}{total_writes};
my $bytes_written = $writes{$fd}{bytes_written};
printf("%6u %10u %10u\n", $fd, $total_writes, $bytes_written);
}
print_unhandled();
}
my %unhandled;
sub print_unhandled
{
if ((scalar keys %unhandled) == 0) {
return;
}
print "\nunhandled events:\n\n";
printf("%-40s %10s\n", "event", "count");
printf("%-40s %10s\n", "----------------------------------------",
"-----------");
foreach my $event_name (keys %unhandled) {
printf("%-40s %10d\n", $event_name, $unhandled{$event_name});
}
}
sub trace_unhandled
{
my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
$common_pid, $common_comm) = @_;
$unhandled{$event_name}++;
}