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Date: Tue, 6 Oct 2009 01:09:57 -0500
From: Tom Zanussi <tzanussi@...il.com>
To: linux-kernel@...r.kernel.org
Cc: mingo@...e.hu, fweisbec@...il.com, rostedt@...dmis.org,
lizf@...fujitsu.com, hch@...radead.org
Subject: [RFC][PATCH 8/9] perf trace: Add perf trace scripting support modules for Perl
Add Perf-Trace-Util support module and example scripts that use it.
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@...il.com>
---
tools/perf/Makefile | 12 ++
tools/perf/scripts/perl/Perf-Trace-Util/Changes | 6 +
tools/perf/scripts/perl/Perf-Trace-Util/MANIFEST | 6 +
.../perf/scripts/perl/Perf-Trace-Util/Makefile.PL | 12 ++
tools/perf/scripts/perl/Perf-Trace-Util/README | 30 ++++
.../perl/Perf-Trace-Util/lib/Perf/Trace/Core.pm | 165 ++++++++++++++++++++
.../perl/Perf-Trace-Util/lib/Perf/Trace/Util.pm | 97 ++++++++++++
.../perl/Perf-Trace-Util/t/Perf-Trace-Util.t | 15 ++
tools/perf/scripts/perl/rw-by-file.pl | 95 +++++++++++
tools/perf/scripts/perl/rw-by-pid.pl | 151 ++++++++++++++++++
tools/perf/scripts/perl/wakeup-latency.pl | 94 +++++++++++
tools/perf/scripts/perl/workqueue-stats.pl | 121 ++++++++++++++
12 files changed, 804 insertions(+), 0 deletions(-)
create mode 100644 tools/perf/scripts/perl/Perf-Trace-Util/Changes
create mode 100644 tools/perf/scripts/perl/Perf-Trace-Util/MANIFEST
create mode 100644 tools/perf/scripts/perl/Perf-Trace-Util/Makefile.PL
create mode 100644 tools/perf/scripts/perl/Perf-Trace-Util/README
create mode 100644 tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Core.pm
create mode 100644 tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Util.pm
create mode 100644 tools/perf/scripts/perl/Perf-Trace-Util/t/Perf-Trace-Util.t
create mode 100644 tools/perf/scripts/perl/rw-by-file.pl
create mode 100644 tools/perf/scripts/perl/rw-by-pid.pl
create mode 100644 tools/perf/scripts/perl/wakeup-latency.pl
create mode 100644 tools/perf/scripts/perl/workqueue-stats.pl
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index a443bd3..50b8f64 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -901,6 +901,18 @@ export perfexec_instdir
install: all
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(bindir_SQ)'
$(INSTALL) perf$X '$(DESTDIR_SQ)$(bindir_SQ)'
+ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/lib/Perf/Trace'
+ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/t'
+ $(INSTALL) scripts/perl/Perf-Trace-Util/lib/Perf/Trace/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/lib/Perf/Trace'
+ $(INSTALL) scripts/perl/Perf-Trace-Util/t/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/t'
+ $(INSTALL) scripts/perl/Perf-Trace-Util/Changes -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util'
+ $(INSTALL) scripts/perl/Perf-Trace-Util/Makefile.PL -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util'
+ $(INSTALL) scripts/perl/Perf-Trace-Util/MANIFEST -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util'
+ $(INSTALL) scripts/perl/Perf-Trace-Util/README -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util'
+ $(INSTALL) scripts/perl/wakeup-latency.pl -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl'
+ $(INSTALL) scripts/perl/workqueue-stats.pl -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl'
+ $(INSTALL) scripts/perl/rw-by-pid.pl -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl'
+ $(INSTALL) scripts/perl/rw-by-file.pl -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl'
ifdef BUILT_INS
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
$(INSTALL) $(BUILT_INS) '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/Changes b/tools/perf/scripts/perl/Perf-Trace-Util/Changes
new file mode 100644
index 0000000..3deccab
--- /dev/null
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/Changes
@@ -0,0 +1,6 @@
+Revision history for Perl extension Perf::Trace::Util.
+
+0.01 Fri Sep 25 12:08:40 2009
+ - original version; created by h2xs 1.23 with options
+ -AXn Perf::Trace::Util
+
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/MANIFEST b/tools/perf/scripts/perl/Perf-Trace-Util/MANIFEST
new file mode 100644
index 0000000..09379e1
--- /dev/null
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/MANIFEST
@@ -0,0 +1,6 @@
+Changes
+Makefile.PL
+MANIFEST
+README
+t/Perf-Trace-Util.t
+lib/Perf/Trace/Util.pm
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/Makefile.PL b/tools/perf/scripts/perl/Perf-Trace-Util/Makefile.PL
new file mode 100644
index 0000000..b0de02e
--- /dev/null
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/Makefile.PL
@@ -0,0 +1,12 @@
+use 5.010000;
+use ExtUtils::MakeMaker;
+# See lib/ExtUtils/MakeMaker.pm for details of how to influence
+# the contents of the Makefile that is written.
+WriteMakefile(
+ NAME => 'Perf::Trace::Util',
+ VERSION_FROM => 'lib/Perf/Trace/Util.pm', # finds $VERSION
+ PREREQ_PM => {}, # e.g., Module::Name => 1.1
+ ($] >= 5.005 ? ## Add these new keywords supported since 5.005
+ (ABSTRACT_FROM => 'lib/Perf/Trace/Util.pm', # retrieve abstract from module
+ AUTHOR => 'Tom Zanussi <tzanussi@...il.com>') : ()),
+);
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/README b/tools/perf/scripts/perl/Perf-Trace-Util/README
new file mode 100644
index 0000000..af1078c
--- /dev/null
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/README
@@ -0,0 +1,30 @@
+Perf-Trace-Util version 0.01
+============================
+
+This module contains utility functions for use with perf trace.
+
+INSTALLATION
+
+Building perf with perf trace Perl scripting should install this
+module in the right place.
+
+You should make sure libperl is installed first e.g. apt-get install
+libperl-dev.
+
+DEPENDENCIES
+
+This module requires these other modules and libraries:
+
+ blah blah blah
+
+COPYRIGHT AND LICENCE
+
+Put the correct copyright and licence information here.
+
+Copyright (C) 2009 by Tom Zanussi <tzanussi@...il.com>
+
+This library is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself, either Perl version 5.10.0 or,
+at your option, any later version of Perl 5 you may have available.
+
+
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Core.pm b/tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Core.pm
new file mode 100644
index 0000000..37b52d3
--- /dev/null
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Core.pm
@@ -0,0 +1,165 @@
+package Perf::Trace::Core;
+
+use 5.010000;
+use strict;
+use warnings;
+
+require Exporter;
+
+our @ISA = qw(Exporter);
+
+our %EXPORT_TAGS = ( 'all' => [ qw(
+) ] );
+
+our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
+
+our @EXPORT = qw(
+define_flag_field define_flag_value flag_str dump_flag_fields
+define_symbolic_field define_symbolic_value symbol_str dump_symbolic_fields
+);
+
+our $VERSION = '0.01';
+
+my %flag_fields;
+my %symbolic_fields;
+
+sub flag_str
+{
+ my ($event_name, $field_name, $value) = @_;
+
+ my $string;
+
+ if ($flag_fields{$event_name}{$field_name}) {
+ my $print_delim = 0;
+ foreach my $idx (sort {$a <=> $b} keys %{$flag_fields{$event_name}{$field_name}{"values"}}) {
+ if (!$value && !$idx) {
+ $string .= "$flag_fields{$event_name}{$field_name}{'values'}{$idx}";
+ last;
+ }
+ if ($idx && ($value & $idx) == $idx) {
+ if ($print_delim && $flag_fields{$event_name}{$field_name}{'delim'}) {
+ $string .= " $flag_fields{$event_name}{$field_name}{'delim'} ";
+ }
+ $string .= "$flag_fields{$event_name}{$field_name}{'values'}{$idx}";
+ $print_delim = 1;
+ $value &= ~$idx;
+ }
+ }
+ }
+
+ return $string;
+}
+
+sub define_flag_field
+{
+ my ($event_name, $field_name, $delim) = @_;
+
+ $flag_fields{$event_name}{$field_name}{"delim"} = $delim;
+}
+
+sub define_flag_value
+{
+ my ($event_name, $field_name, $value, $field_str) = @_;
+
+ $flag_fields{$event_name}{$field_name}{"values"}{$value} = $field_str;
+}
+
+sub dump_flag_fields
+{
+ for my $event (keys %flag_fields) {
+ print "event $event:\n";
+ for my $field (keys %{$flag_fields{$event}}) {
+ print " field: $field:\n";
+ print " delim: $flag_fields{$event}{$field}{'delim'}\n";
+ foreach my $idx (sort {$a <=> $b} keys %{$flag_fields{$event}{$field}{"values"}}) {
+ print " value $idx: $flag_fields{$event}{$field}{'values'}{$idx}\n";
+ }
+ }
+ }
+}
+
+sub symbol_str
+{
+ my ($event_name, $field_name, $value) = @_;
+
+ if ($symbolic_fields{$event_name}{$field_name}) {
+ foreach my $idx (sort {$a <=> $b} keys %{$symbolic_fields{$event_name}{$field_name}{"values"}}) {
+ if (!$value && !$idx) {
+ return "$symbolic_fields{$event_name}{$field_name}{'values'}{$idx}";
+ last;
+ }
+ if ($value == $idx) {
+ return "$symbolic_fields{$event_name}{$field_name}{'values'}{$idx}";
+ }
+ }
+ }
+
+ return undef;
+}
+
+sub define_symbolic_field
+{
+ my ($event_name, $field_name) = @_;
+
+ # nothing to do, really
+}
+
+sub define_symbolic_value
+{
+ my ($event_name, $field_name, $value, $field_str) = @_;
+
+ $symbolic_fields{$event_name}{$field_name}{"values"}{$value} = $field_str;
+}
+
+sub dump_symbolic_fields
+{
+ for my $event (keys %symbolic_fields) {
+ print "event $event:\n";
+ for my $field (keys %{$symbolic_fields{$event}}) {
+ print " field: $field:\n";
+ foreach my $idx (sort {$a <=> $b} keys %{$symbolic_fields{$event}{$field}{"values"}}) {
+ print " value $idx: $symbolic_fields{$event}{$field}{'values'}{$idx}\n";
+ }
+ }
+ }
+}
+
+1;
+__END__
+=head1 NAME
+
+Perf::Trace::Core - Perl extension for perf trace
+
+=head1 SYNOPSIS
+
+ use Perf::Trace::Core
+
+=head1 DESCRIPTION
+
+Core functions for use with perf trace. The define_* functions are
+called by the event-processing loop and shouldn't be called by users.
+All others are user-callable.
+
+=head2 EXPORT
+
+ flag_str - return a string with the string represention of a flag field
+ symbolic_str - return a string with the string represention of a symbol field
+
+=head1 SEE ALSO
+
+Perf (trace) documentation
+
+=head1 AUTHOR
+
+Tom Zanussi, E<lt>tzanussi@...il.com<gt>
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright (C) 2009 by Tom Zanussi
+
+This library is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself, either Perl version 5.10.0 or,
+at your option, any later version of Perl 5 you may have available.
+
+
+=cut
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Util.pm b/tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Util.pm
new file mode 100644
index 0000000..b3037fe
--- /dev/null
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/lib/Perf/Trace/Util.pm
@@ -0,0 +1,97 @@
+package Perf::Trace::Util;
+
+use 5.010000;
+use strict;
+use warnings;
+
+require Exporter;
+
+our @ISA = qw(Exporter);
+
+our %EXPORT_TAGS = ( 'all' => [ qw(
+) ] );
+
+our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
+
+our @EXPORT = qw(
+avg nsecs nsecs_secs nsecs_nsecs nsecs_usecs print_nsecs
+);
+
+our $VERSION = '0.01';
+
+sub avg
+{
+ my ($total, $n) = @_;
+
+ return $total / $n;
+}
+
+my $NSECS_PER_SEC = 1000000000;
+
+sub nsecs
+{
+ my ($secs, $nsecs) = @_;
+
+ return $secs * $NSECS_PER_SEC + $nsecs;
+}
+
+sub nsecs_secs {
+ my ($nsecs) = @_;
+
+ return $nsecs / $NSECS_PER_SEC;
+}
+
+sub nsecs_nsecs {
+ my ($nsecs) = @_;
+
+ return $nsecs - nsecs_secs($nsecs);
+}
+
+sub nsecs_str {
+ my ($nsecs) = @_;
+
+ my $str = sprintf("%5u.%09u", nsecs_secs($nsecs), nsecs_nsecs($nsecs));
+
+ return $str;
+}
+
+1;
+__END__
+=head1 NAME
+
+Perf::Trace::Util - Perl extension for perf trace
+
+=head1 SYNOPSIS
+
+ use Perf::Trace::Util;
+
+=head1 DESCRIPTION
+
+Utility functions for use with perf trace.
+
+=head2 EXPORT
+
+ nsecs - return total nsecs given secs/nsecs pair
+ nsecs_secs - return whole secs portion given nsecs
+ nsecs_nsecs - return nsecs remainder given nsecs
+ nsecs_str - return printable string in the form secs.nsecs
+ avg - return average given a sum and a total number of values
+
+=head1 SEE ALSO
+
+Perf (trace) documentation
+
+=head1 AUTHOR
+
+Tom Zanussi, E<lt>tzanussi@...il.com<gt>
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright (C) 2009 by Tom Zanussi
+
+This library is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself, either Perl version 5.10.0 or,
+at your option, any later version of Perl 5 you may have available.
+
+
+=cut
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/t/Perf-Trace-Util.t b/tools/perf/scripts/perl/Perf-Trace-Util/t/Perf-Trace-Util.t
new file mode 100644
index 0000000..8166a8c
--- /dev/null
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/t/Perf-Trace-Util.t
@@ -0,0 +1,15 @@
+# Before `make install' is performed this script should be runnable with
+# `make test'. After `make install' it should work as `perl Perf-Trace-Util.t'
+
+#########################
+
+# change 'tests => 1' to 'tests => last_test_to_print';
+
+use Test::More tests => 1;
+BEGIN { use_ok('Perf::Trace::Util') };
+
+#########################
+
+# Insert your test code below, the Test::More module is use()ed here so read
+# its man page ( perldoc Test::More ) for help writing this test script.
+
diff --git a/tools/perf/scripts/perl/rw-by-file.pl b/tools/perf/scripts/perl/rw-by-file.pl
new file mode 100644
index 0000000..2bf0d0d
--- /dev/null
+++ b/tools/perf/scripts/perl/rw-by-file.pl
@@ -0,0 +1,95 @@
+# 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 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, $common_cpu, $common_secs, $common_nsecs,
+ $common_pid, $common_comm, $nr, $fd, $buf, $count) = @_;
+
+ if ($common_comm == $for_comm) {
+ $reads{$fd}{bytes_requested} += $count;
+ $reads{$fd}{total_reads}++;
+ }
+}
+
+sub syscalls::sys_enter_write
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs,
+ $common_pid, $common_comm, $nr, $fd, $buf, $count) = @_;
+
+ if ($common_comm == $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, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm) = @_;
+
+ $unhandled{$event_name}++;
+}
+
+
diff --git a/tools/perf/scripts/perl/rw-by-pid.pl b/tools/perf/scripts/perl/rw-by-pid.pl
new file mode 100644
index 0000000..ea7afe8
--- /dev/null
+++ b/tools/perf/scripts/perl/rw-by-pid.pl
@@ -0,0 +1,151 @@
+# Display r/w activity for all processes
+
+# 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 lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
+use lib "./Perf-Trace-Util/lib";
+use Perf::Trace::Core;
+use Perf::Trace::Util;
+
+my %reads;
+my %writes;
+
+sub syscalls::sys_exit_read
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid, $common_comm,
+ $nr, $ret) = @_;
+
+ if ($ret > 0) {
+ $reads{$common_pid}{bytes_read} += $ret;
+ } else {
+ $reads{$common_pid}{errors}{$ret}++;
+ }
+}
+
+sub syscalls::sys_enter_read
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid, $common_comm,
+ $nr, $fd, $buf, $count) = @_;
+
+ $reads{$common_pid}{bytes_requested} += $count;
+ $reads{$common_pid}{total_reads}++;
+ $reads{$common_pid}{comm} = $common_comm;
+}
+
+sub syscalls::sys_exit_write
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid, $common_comm,
+ $nr, $ret) = @_;
+
+ if ($ret <= 0) {
+ $writes{$common_pid}{errors}{$ret}++;
+ }
+}
+
+sub syscalls::sys_enter_write
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid, $common_comm,
+ $nr, $fd, $buf, $count) = @_;
+
+ $writes{$common_pid}{bytes_written} += $count;
+ $writes{$common_pid}{total_writes}++;
+ $writes{$common_pid}{comm} = $common_comm;
+}
+
+sub trace_end
+{
+ printf("read counts by pid:\n\n");
+
+ printf("%6s %20s %10s %10s %10s\n", "pid", "comm",
+ "# reads", "bytes_requested", "bytes_read");
+ printf("%6s %-20s %10s %10s %10s\n", "------", "--------------------",
+ "-----------", "----------", "----------");
+
+ foreach my $pid (sort {$reads{$b}{bytes_read} <=> $reads{$a}{bytes_read}} keys %reads) {
+ my $comm = $reads{$pid}{comm};
+ my $total_reads = $reads{$pid}{total_reads};
+ my $bytes_requested = $reads{$pid}{bytes_requested};
+ my $bytes_read = $reads{$pid}{bytes_read};
+
+ printf("%6s %-20s %10s %10s %10s\n", $pid, $comm,
+ $total_reads, $bytes_requested, $bytes_read);
+ }
+
+ printf("\nfailed reads by pid:\n\n");
+
+ printf("%6s %20s %6s %10s\n", "pid", "comm", "error #", "# errors");
+ printf("%6s %20s %6s %10s\n", "------", "--------------------",
+ "------", "----------");
+
+ foreach my $pid (keys %reads) {
+ my $comm = $reads{$pid}{comm};
+ foreach my $err (sort {$reads{$b}{comm} cmp $reads{$a}{comm}} keys %{$reads{$pid}{errors}}) {
+ my $errors = $reads{$pid}{errors}{$err};
+
+ printf("%6d %-20s %6d %10s\n", $pid, $comm, $err, $errors);
+ }
+ }
+
+ printf("\nwrite counts by pid:\n\n");
+
+ printf("%6s %20s %10s %10s %10s\n", "pid", "comm",
+ "# writes", "bytes_written");
+ printf("%6s %-20s %10s %10s %10s\n", "------", "--------------------",
+ "-----------", "----------");
+
+ foreach my $pid (sort {$writes{$b}{bytes_written} <=> $writes{$a}{bytes_written}} keys %writes) {
+ my $comm = $writes{$pid}{comm};
+ my $total_writes = $writes{$pid}{total_writes};
+ my $bytes_written = $writes{$pid}{bytes_written};
+
+ printf("%6s %-20s %10s %10s\n", $pid, $comm,
+ $total_writes, $bytes_written);
+ }
+
+ printf("\nfailed writes by pid:\n\n");
+
+ printf("%6s %20s %6s %10s\n", "pid", "comm", "error #", "# errors");
+ printf("%6s %20s %6s %10s\n", "------", "--------------------",
+ "------", "----------");
+
+ foreach my $pid (keys %writes) {
+ my $comm = $writes{$pid}{comm};
+ foreach my $err (sort {$writes{$b}{comm} cmp $writes{$a}{comm}} keys %{$writes{$pid}{errors}}) {
+ my $errors = $writes{$pid}{errors}{$err};
+
+ printf("%6d %-20s %6d %10s\n", $pid, $comm, $err, $errors);
+ }
+ }
+
+ 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, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm) = @_;
+
+ $unhandled{$event_name}++;
+}
diff --git a/tools/perf/scripts/perl/wakeup-latency.pl b/tools/perf/scripts/perl/wakeup-latency.pl
new file mode 100644
index 0000000..34011ff
--- /dev/null
+++ b/tools/perf/scripts/perl/wakeup-latency.pl
@@ -0,0 +1,94 @@
+# Display avg/min/max wakeup latency
+
+# 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 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 %last_wakeup;
+
+my $max_wakeup_latency;
+my $min_wakeup_latency;
+my $total_wakeup_latency;
+my $total_wakeups;
+
+sub sched::sched_switch
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm,
+ $prev_comm, $prev_pid, $prev_prio, $prev_state, $next_comm, $next_pid,
+ $next_prio) = @_;
+
+ my $wakeup_ts = $last_wakeup{$common_cpu}{ts};
+ if ($wakeup_ts) {
+ my $switch_ts = nsecs($common_secs, $common_nsecs);
+ my $wakeup_latency = $switch_ts - $wakeup_ts;
+ if ($wakeup_latency > $max_wakeup_latency) {
+ $max_wakeup_latency = $wakeup_latency;
+ }
+ if ($wakeup_latency < $min_wakeup_latency) {
+ $min_wakeup_latency = $wakeup_latency;
+ }
+ $total_wakeup_latency += $wakeup_latency;
+ $total_wakeups++;
+ }
+ $last_wakeup{$common_cpu}{ts} = 0;
+}
+
+sub sched::sched_wakeup
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm,
+ $comm, $pid, $prio, $success, $cpu) = @_;
+
+ $last_wakeup{$cpu}{ts} = nsecs($common_secs, $common_nsecs);
+}
+
+sub trace_begin
+{
+ $min_wakeup_latency = 1000000000;
+}
+
+sub trace_end
+{
+ printf("wakeup_latency stats:\n\n");
+ print "total_wakeups: $total_wakeups\n";
+ printf("avg_wakeup_latency (ns): %u\n",
+ avg($total_wakeup_latency, $total_wakeups));
+ printf("min_wakeup_latency (ns): %u\n", $min_wakeup_latency);
+ printf("max_wakeup_latency (ns): %u\n", $max_wakeup_latency);
+
+ 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, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm) = @_;
+
+ $unhandled{$event_name}++;
+}
diff --git a/tools/perf/scripts/perl/workqueue-stats.pl b/tools/perf/scripts/perl/workqueue-stats.pl
new file mode 100644
index 0000000..45e7a26
--- /dev/null
+++ b/tools/perf/scripts/perl/workqueue-stats.pl
@@ -0,0 +1,121 @@
+# Displays workqueue stats
+#
+# Usage:
+#
+# perf record -c 1 -f -a -R -e workqueue:workqueue_creation -e
+# workqueue:workqueue_destruction -e workqueue:workqueue_execution
+# -e workqueue:workqueue_insertion
+#
+# perf trace -p -s tools/perf/scripts/perl/workqueue-stats.pl
+
+use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
+use lib "./Perf-Trace-Util/lib";
+use Perf::Trace::Core;
+use Perf::Trace::Util;
+
+my @cpus;
+
+sub workqueue::workqueue_destruction
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm,
+ $thread_comm, $thread_pid) = @_;
+
+ $cpus[$common_cpu]{$thread_pid}{destroyed}++;
+ $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
+}
+
+sub workqueue::workqueue_creation
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm,
+ $thread_comm, $thread_pid, $cpu) = @_;
+
+ $cpus[$common_cpu]{$thread_pid}{created}++;
+ $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
+}
+
+sub workqueue::workqueue_execution
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm,
+ $thread_comm, $thread_pid, $func) = @_;
+
+ $cpus[$common_cpu]{$thread_pid}{executed}++;
+ $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
+}
+
+sub workqueue::workqueue_insertion
+{
+ my ($event_name, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm,
+ $thread_comm, $thread_pid, $func) = @_;
+
+ $cpus[$common_cpu]{$thread_pid}{inserted}++;
+ $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
+}
+
+sub trace_end
+{
+ print "workqueue work stats:\n\n";
+ my $cpu = 0;
+ printf("%3s %6s %6s\t%-20s\n", "cpu", "ins", "exec", "name");
+ printf("%3s %6s %6s\t%-20s\n", "---", "---", "----", "----");
+ foreach $pidhash (@cpus) {
+ while (($pid, $wqhash) = each %$pidhash) {
+ my $ins = $$wqhash{'inserted'};
+ my $exe = $$wqhash{'executed'};
+ my $comm = $$wqhash{'comm'};
+ if ($ins || $exe) {
+ printf("%3u %6u %6u\t%-20s\n", $cpu, $ins, $exe, $comm);
+ }
+ }
+ $cpu++;
+ }
+
+ $cpu = 0;
+ print "\nworkqueue lifecycle stats:\n\n";
+ printf("%3s %6s %6s\t%-20s\n", "cpu", "created", "destroyed", "name");
+ printf("%3s %6s %6s\t%-20s\n", "---", "-------", "---------", "----");
+ foreach $pidhash (@cpus) {
+ while (($pid, $wqhash) = each %$pidhash) {
+ my $created = $$wqhash{'created'};
+ my $destroyed = $$wqhash{'destroyed'};
+ my $comm = $$wqhash{'comm'};
+ if ($created || $destroyed) {
+ printf("%3u %6u %6u\t%-20s\n", $cpu, $created, $destroyed,
+ $comm);
+ }
+ }
+ $cpu++;
+ }
+
+ 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, $common_cpu, $common_secs, $common_nsecs, $common_pid,
+ $common_comm) = @_;
+
+ $unhandled{$event_name}++;
+}
--
1.6.4.GIT
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