[Intel-gfx] [PATCH i-g-t] scripts/trace.pl: Auto-detect tracepoint field order
Tvrtko Ursulin
tursulin at ursulin.net
Mon Dec 18 12:02:15 UTC 2017
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Instead of hard-coding the order of key-value pairs into regular
expressions, auto-detect them as we go.
At the same time re-factor the code so it is smaller and even
slightly faster (10-15% by a quick measurement).
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Cc: John Harrison <John.C.Harrison at intel.com>
---
scripts/trace.pl | 223 ++++++++++++++++++-------------------------------------
1 file changed, 71 insertions(+), 152 deletions(-)
diff --git a/scripts/trace.pl b/scripts/trace.pl
index aed9b20d8407..9b3fb6486fec 100755
--- a/scripts/trace.pl
+++ b/scripts/trace.pl
@@ -302,74 +302,6 @@ die if scalar(@args);
@ARGV = @args;
-sub parse_req
-{
- my ($line, $tp) = @_;
- state %cache;
-
- $cache{$tp} = qr/(\d+)\.(\d+):.*$tp.*ring=(\d+), ctx=(\d+), seqno=(\d+), global(?:_seqno)?=(\d+)/ unless exists $cache{$tp};
-
- if ($line =~ $cache{$tp}) {
- return ($1, $2, $3, $4, $5, $6);
- } else {
- return undef;
- }
-}
-
-sub parse_req_hw
-{
- my ($line, $tp) = @_;
- state %cache;
-
- $cache{$tp} = qr/(\d+)\.(\d+):.*$tp.*ring=(\d+), ctx=(\d+), seqno=(\d+), global(?:_seqno)?=(\d+), port=(\d+)/ unless exists $cache{$tp};
-
- if ($line =~ $cache{$tp}) {
- return ($1, $2, $3, $4, $5, $6, $7);
- } else {
- return undef;
- }
-}
-
-sub parse_req_wait_begin
-{
- my ($line, $tp) = @_;
-
- if ($line =~ /(\d+)\.(\d+):.*i915_gem_request_wait_begin.*ring=(\d+), ctx=(\d+), seqno=(\d+)/) {
- return ($1, $2, $3, $4, $5);
- } else {
- return undef;
- }
-}
-
-sub parse_notify
-{
- my ($line) = @_;
-
- if ($line =~ /(\d+)\.(\d+):.*intel_engine_notify.*ring=(\d+), seqno=(\d+)/) {
- return ($1, $2, $3, $4);
- } else {
- return undef;
- }
-}
-
-sub parse_freq
-{
- my ($line) = @_;
-
- if ($line =~ /(\d+)\.(\d+):.*intel_gpu_freq_change.*new_freq=(\d+)/) {
- return ($1, $2, $3);
- } else {
- return undef;
- }
-}
-
-sub us
-{
- my ($s, $us) = @_;
-
- return $s * 1000000 + $us;
-}
-
sub db_key
{
my ($ring, $ctx, $seqno) = @_;
@@ -425,86 +357,87 @@ my $prev_freq_ts = 0;
my $oldkernelwa = 0;
my ($no_queue, $no_in);
while (<>) {
- my ($s, $us, $ring, $ctx, $seqno, $global_seqno, $port);
- my $freq;
+ my @fields;
+ my @tmp;
+ my $tp_name;
+ my $time;
+ my %tp;
my $key;
chomp;
+ @fields = split ' ';
- ($s, $us, $ring, $ctx, $seqno) = parse_req_wait_begin($_);
- if (defined $s) {
- my %rw;
+ $tp_name = $fields[4];
+ @tmp = split ':', $tp_name, 2;
+ next unless $tmp[0] eq 'i915';
+ $tp_name = $tmp[1];
+ chop $tp_name;
- next if exists $ignore_ring{$ring};
+ chop $fields[3];
+ $time = $fields[3] * 1000000.0;
+ splice @fields, 0, 5;
- $ctx = sanitize_ctx($ctx, $ring);
- $key = db_key($ring, $ctx, $seqno);
+ foreach my $f (@fields) {
+ my @kv = split '=|,', $f;
- next if exists $reqwait{$key};
+ $kv[0] = 'global' if $kv[0] eq 'global_seqno';
- $rw{'key'} = $key;
- $rw{'ring'} = $ring;
- $rw{'seqno'} = $seqno;
- $rw{'ctx'} = $ctx;
- $rw{'start'} = us($s, $us);
- $reqwait{$key} = \%rw;
- next;
+ $tp{$kv[0]} = $kv[1];
}
- ($s, $us, $ring, $ctx, $seqno, $global_seqno) = parse_req($_, 'i915:i915_gem_request_wait_end');
- if (defined $s) {
- next if exists $ignore_ring{$ring};
+ return undef if exists $tp{'ring'} and exists $ignore_ring{$tp{'ring'}};
+
+ if ($tp_name eq 'i915_gem_request_wait_begin') {
+ my %rw;
- $ctx = sanitize_ctx($ctx, $ring);
- $key = db_key($ring, $ctx, $seqno);
+ $tp{'ctx'} = sanitize_ctx($tp{'ctx'}, $tp{'ring'});
+ $key = db_key($tp{'ring'}, $tp{'ctx'}, $tp{'seqno'});
- next unless exists $reqwait{$key};
+ next if exists $reqwait{$key};
- $reqwait{$key}->{'end'} = us($s, $us);
+ $rw{'key'} = $key;
+ $rw{'ring'} = $tp{'ring'};
+ $rw{'seqno'} = $tp{'seqno'};
+ $rw{'ctx'} = $tp{'ctx'};
+ $rw{'start'} = $time;
+ $reqwait{$key} = \%rw;
next;
- }
+ } elsif ($tp_name eq 'i915_gem_request_wait_end') {
+ $tp{'ctx'} = sanitize_ctx($tp{'ctx'}, $tp{'ring'});
+ $key = db_key($tp{'ring'}, $tp{'ctx'}, $tp{'seqno'});
- ($s, $us, $ring, $ctx, $seqno, $global_seqno) = parse_req($_, 'i915:i915_gem_request_add');
- if (defined $s) {
- my $orig_ctx = $ctx;
+ next unless exists $reqwait{$key};
- next if exists $ignore_ring{$ring};
+ $reqwait{$key}->{'end'} = $time;
+ next;
+ } elsif ($tp_name eq 'i915_gem_request_add') {
+ my $orig_ctx = $tp{'ctx'};
- $ctx = sanitize_ctx($ctx, $ring);
- $key = db_key($ring, $ctx, $seqno);
+ $tp{'ctx'} = sanitize_ctx($tp{'ctx'}, $tp{'ring'});
+ $key = db_key($tp{'ring'}, $tp{'ctx'}, $tp{'seqno'});
if (exists $queue{$key}) {
$ctxdb{$orig_ctx}++;
- $ctx = sanitize_ctx($orig_ctx, $ring);
- $key = db_key($ring, $ctx, $seqno);
+ $tp{'ctx'} = sanitize_ctx($tp{'ctx'}, $tp{'ring'});
+ $key = db_key($tp{'ring'}, $tp{'ctx'}, $tp{'seqno'});
}
- $queue{$key} = us($s, $us);
+ $queue{$key} = $time;
next;
- }
-
- ($s, $us, $ring, $ctx, $seqno, $global_seqno) = parse_req($_, 'i915:i915_gem_request_submit');
- if (defined $s) {
- next if exists $ignore_ring{$ring};
-
- $ctx = sanitize_ctx($ctx, $ring);
- $key = db_key($ring, $ctx, $seqno);
+ } elsif ($tp_name eq 'i915_gem_request_submit') {
+ $tp{'ctx'} = sanitize_ctx($tp{'ctx'}, $tp{'ring'});
+ $key = db_key($tp{'ring'}, $tp{'ctx'}, $tp{'seqno'});
die if exists $submit{$key};
die unless exists $queue{$key};
- $submit{$key} = us($s, $us);
+ $submit{$key} = $time;
next;
- }
-
- ($s, $us, $ring, $ctx, $seqno, $global_seqno, $port) = parse_req_hw($_, 'i915:i915_gem_request_in');
- if (defined $s) {
+ } elsif ($tp_name eq 'i915_gem_request_in') {
my %req;
- next if exists $ignore_ring{$ring};
-
- $ctx = sanitize_ctx($ctx, $ring);
- $key = db_key($ring, $ctx, $seqno);
+ $tp{'ctx'} = sanitize_ctx($tp{'ctx'}, $tp{'ring'});
+ $key = db_key($tp{'ring'}, $tp{'ctx'}, $tp{'seqno'});
die if exists $db{$key};
if (not exists $queue{$key} and $oldkernelwa) {
@@ -514,30 +447,25 @@ while (<>) {
die unless exists $queue{$key};
die unless exists $submit{$key};
- $req{'start'} = us($s, $us);
- $req{'ring'} = $ring;
- $req{'seqno'} = $seqno;
- $req{'ctx'} = $ctx;
- $req{'name'} = $ctx . '/' . $seqno;
- $req{'global'} = $global_seqno;
- $req{'port'} = $port;
+ $req{'start'} = $time;
+ $req{'ring'} = $tp{'ring'};
+ $req{'seqno'} = $tp{'seqno'};
+ $req{'ctx'} = $tp{'ctx'};
+ $req{'name'} = $tp{'ctx'} . '/' . $tp{'seqno'};
+ $req{'global'} = $tp{'global'};
+ $req{'port'} = $tp{'port'};
$req{'queue'} = $queue{$key};
$req{'submit-delay'} = $submit{$key} - $queue{$key};
$req{'execute-delay'} = $req{'start'} - $submit{$key};
- $rings{$ring} = $gid++ unless exists $rings{$ring};
- $ringmap{$rings{$ring}} = $ring;
+ $rings{$tp{'ring'}} = $gid++ unless exists $rings{$tp{'ring'}};
+ $ringmap{$rings{$tp{'ring'}}} = $tp{'ring'};
$db{$key} = \%req;
next;
- }
-
- ($s, $us, $ring, $ctx, $seqno, $global_seqno, $port) = parse_req($_, 'i915:i915_gem_request_out');
- if (defined $s) {
- my $gkey = global_key($ring, $global_seqno);
+ } elsif ($tp_name eq 'i915_gem_request_out') {
+ my $gkey = global_key($tp{'ring'}, $tp{'global'});
- next if exists $ignore_ring{$ring};
-
- $ctx = sanitize_ctx($ctx, $ring);
- $key = db_key($ring, $ctx, $seqno);
+ $tp{'ctx'} = sanitize_ctx($tp{'ctx'}, $tp{'ring'});
+ $key = db_key($tp{'ring'}, $tp{'ctx'}, $tp{'seqno'});
if (not exists $db{$key} and $oldkernelwa) {
$no_in++;
@@ -547,7 +475,7 @@ while (<>) {
die unless exists $db{$key}->{'start'};
die if exists $db{$key}->{'end'};
- $db{$key}->{'end'} = us($s, $us);
+ $db{$key}->{'end'} = $time;
if (exists $notify{$gkey}) {
$db{$key}->{'notify'} = $notify{$gkey};
} else {
@@ -559,22 +487,13 @@ while (<>) {
$db{$key}->{'duration'} = $db{$key}->{'notify'} - $db{$key}->{'start'};
$db{$key}->{'context-complete-delay'} = $db{$key}->{'end'} - $db{$key}->{'notify'};
next;
- }
-
- ($s, $us, $ring, $seqno) = parse_notify($_);
- if (defined $s) {
- next if exists $ignore_ring{$ring};
- $notify{global_key($ring, $seqno)} = us($s, $us);
+ } elsif ($tp_name eq 'intel_engine_notify') {
+ $notify{global_key($tp{'ring'}, $tp{'seqno'})} = $time;
next;
- }
-
- ($s, $us, $freq) = parse_freq($_);
- if (defined $s) {
- my $cur = us($s, $us);
-
- push @freqs, [$prev_freq_ts, $cur, $prev_freq] if $prev_freq;
- $prev_freq_ts = $cur;
- $prev_freq = $freq;
+ } elsif ($tp_name eq 'intel_gpu_freq_change') {
+ push @freqs, [$prev_freq_ts, $time, $prev_freq] if $prev_freq;
+ $prev_freq_ts = $time;
+ $prev_freq = $tp{'new_freq'};
next;
}
}
--
2.14.1
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