#!/usr/bin/perl -w
# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
# Licensed under the terms of the GNU GPL License version 2

# 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 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 %last_wakeup;

my $max_wakeup_latency;
my $min_wakeup_latency;
my $total_wakeup_latency = 0;
my $total_wakeups = 0;

sub sched::sched_switch
{
    my ($event_name, $context, $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, $context, $common_cpu, $common_secs, $common_nsecs,
	$common_pid, $common_comm,
	$comm, $pid, $prio, $success, $target_cpu) = @_;

    $last_wakeup{$target_cpu}{ts} = nsecs($common_secs, $common_nsecs);
}

sub trace_begin
{
    $min_wakeup_latency = 1000000000;
    $max_wakeup_latency = 0;
}

sub trace_end
{
    printf("wakeup_latency stats:\n\n");
    print "total_wakeups: $total_wakeups\n";
    if ($total_wakeups) {
	printf("avg_wakeup_latency (ns): %u\n",
	       avg($total_wakeup_latency, $total_wakeups));
    } else {
	printf("avg_wakeup_latency (ns): N/A\n");
    }
    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, $context, $common_cpu, $common_secs, $common_nsecs,
	$common_pid, $common_comm) = @_;

    $unhandled{$event_name}++;
}
ue='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=2f3a5272e5c16c3c10fbba06928a513f9b1e2fcd'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?h=nds-private-remove&amp;id=2f3a5272e5c16c3c10fbba06928a513f9b1e2fcd'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?h=nds-private-remove&amp;id=2f3a5272e5c16c3c10fbba06928a513f9b1e2fcd'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc2?h=nds-private-remove&amp;id=2f3a5272e5c16c3c10fbba06928a513f9b1e2fcd'>dwc2</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc2/Kconfig?h=nds-private-remove&amp;id=2f3a5272e5c16c3c10fbba06928a513f9b1e2fcd'>Kconfig</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc2/Kconfig?h=nds-private-remove&amp;id=2f3a5272e5c16c3c10fbba06928a513f9b1e2fcd&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
span='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 15:55:48 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 15:56:40 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/compaction.h?h=nds-private-remove&amp;id=1930b60352e7e195f55b27cde15d2a8f43342a8b'>1930b60352e7e195f55b27cde15d2a8f43342a8b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/trace/events/compaction.h?id=1930b60352e7e195f55b27cde15d2a8f43342a8b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=1930b60352e7e195f55b27cde15d2a8f43342a8b'>ec3f66cd8d8110bf7b4f61e0446bdea505915db9</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/trace/events/compaction.h?h=nds-private-remove&amp;id=1930b60352e7e195f55b27cde15d2a8f43342a8b'>include/trace/events/compaction.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/compaction.h?h=nds-private-remove&amp;id=4be9993493bc7ee3fdf950a83bc050a3e6cf2a45'>4be9993493bc7ee3fdf950a83bc050a3e6cf2a45</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/compaction.h?h=nds-private-remove&amp;id=1930b60352e7e195f55b27cde15d2a8f43342a8b&amp;id2=4be9993493bc7ee3fdf950a83bc050a3e6cf2a45'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/compaction.h?h=nds-private-remove&amp;id=ec960de61503ef349588dccfa3ae02efabcc2762'>ec960de61503ef349588dccfa3ae02efabcc2762</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/compaction.h?h=nds-private-remove&amp;id=1930b60352e7e195f55b27cde15d2a8f43342a8b&amp;id2=ec960de61503ef349588dccfa3ae02efabcc2762'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'dsa-port-mirroring'</div><div class='commit-msg'>Florian Fainelli says:

====================
net: dsa: Port mirroring support

This patch series adds support for port mirroring in the two
Broadcom switch drivers. The major part of the functional are actually with
the plumbing between tc and the drivers.

Changes in v5:

- Added Jiri's Reviewed-by tag to first patch
- rebase against latest net-next/master after bcm_sf2 CFP series

Changes in v4:

- rebased against latest net-next/master after Vivien's changes

Changes in v3:

- removed multiline comments from added structures
- simplify error handling in dsa_slave_add_cls_matchall

Changes in v2:

- fixed filter removal logic to disable the ingress or egress mirroring
  when there are no longer ports being monitored in ingress or egress

- removed a stray list_head in dsa_port structure that is not used

Tested using the two iproute2 examples:

      tc qdisc  add dev eth1 handle ffff: ingress
      tc filter add dev eth1 parent ffff:           \
               matchall skip_sw                      \
               action mirred egress mirror           \
               dev eth2
      tc qdisc add dev eth1 handle 1: root prio
      tc filter add dev eth1 parent 1:               \
               matchall skip_sw                       \
               action mirred egress mirror            \
               dev eth2
====================

Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=1930b60352e7e195f55b27cde15d2a8f43342a8b'>Diffstat</a> (limited to 'include/trace/events/compaction.h')</div><table summary='diffstat' class='diffstat'>