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67439d555f
Since common_callchain has been added to the argument array, we need to
reflect it in perl-based scripts, because otherwise the following args
would be shifted and thus incorrect. E.g. rw-by-pid and calculation of
read and written bytes:
Before:
read counts by pid:
pid comm # reads bytes_requested bytes_read
------ -------------------- ----------- ---------- ----------
19301 dd 4 424510450039736 0
After:
read counts by pid:
pid comm # reads bytes_requested bytes_read
------ -------------------- ----------- ---------- ----------
19301 dd 4 9536 4341
Committer testing:
To see before after first do:
# perf script record rw-by-pid
^C
Now you'll have a perf.data file to report on, then do before and after
using:
# perf script report rw-by-pid
Anbd notice the bytes_request/bytes_read, as above.
Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Benjamin Salon <bsalon@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
LPU-Reference: 20200311132836.12693-1-mpetlan@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
107 lines
2.6 KiB
Raku
107 lines
2.6 KiB
Raku
# perf script event handlers, generated by perf script -g perl
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# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
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# Licensed under the terms of the GNU GPL License version 2
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# This script tests basic functionality such as flag and symbol
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# strings, common_xxx() calls back into perf, begin, end, unhandled
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# events, etc. Basically, if this script runs successfully and
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# displays expected results, perl scripting support should be ok.
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use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
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use lib "./Perf-Trace-Util/lib";
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use Perf::Trace::Core;
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use Perf::Trace::Context;
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use Perf::Trace::Util;
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sub trace_begin
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{
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print "trace_begin\n";
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}
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sub trace_end
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{
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print "trace_end\n";
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print_unhandled();
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}
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sub irq::softirq_entry
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm, $common_callchain,
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$vec) = @_;
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print_header($event_name, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm);
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print_uncommon($context);
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printf("vec=%s\n",
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symbol_str("irq::softirq_entry", "vec", $vec));
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}
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sub kmem::kmalloc
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm, $common_callchain,
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$call_site, $ptr, $bytes_req, $bytes_alloc,
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$gfp_flags) = @_;
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print_header($event_name, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm);
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print_uncommon($context);
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printf("call_site=%p, ptr=%p, bytes_req=%u, bytes_alloc=%u, ".
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"gfp_flags=%s\n",
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$call_site, $ptr, $bytes_req, $bytes_alloc,
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flag_str("kmem::kmalloc", "gfp_flags", $gfp_flags));
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}
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# print trace fields not included in handler args
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sub print_uncommon
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{
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my ($context) = @_;
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printf("common_preempt_count=%d, common_flags=%s, common_lock_depth=%d, ",
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common_pc($context), trace_flag_str(common_flags($context)),
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common_lock_depth($context));
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}
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my %unhandled;
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sub print_unhandled
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{
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if ((scalar keys %unhandled) == 0) {
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return;
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}
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print "\nunhandled events:\n\n";
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printf("%-40s %10s\n", "event", "count");
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printf("%-40s %10s\n", "----------------------------------------",
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"-----------");
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foreach my $event_name (keys %unhandled) {
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printf("%-40s %10d\n", $event_name, $unhandled{$event_name});
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}
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}
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sub trace_unhandled
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm, $common_callchain) = @_;
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$unhandled{$event_name}++;
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}
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sub print_header
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{
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my ($event_name, $cpu, $secs, $nsecs, $pid, $comm) = @_;
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printf("%-20s %5u %05u.%09u %8u %-20s ",
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$event_name, $cpu, $secs, $nsecs, $pid, $comm);
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}
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