kernel-ark/tools/perf/scripts/perl/rw-by-file.pl
Arnaldo Carvalho de Melo 765532c8aa perf script: Finish the rename from trace to script
The scripts have calls to 'perf trace' that need to be converted to 'perf script', do it.

This problem was introduced in 133dc4c.

Reported-by: Torok Edwin <edwintorok@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Torok Edwin <edwintorok@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-25 11:29:02 -02:00

107 lines
2.8 KiB
Perl

#!/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;
my $usage = "perf script -s rw-by-file.pl <comm>\n";
my $for_comm = shift or die $usage;
my %reads;
my %writes;
sub syscalls::sys_enter_read
{
my ($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}++;
}