1 #!/usr/bin/perl -w 1 #!/usr/bin/perl -w
2 # SPDX-License-Identifier: GPL-2.0-only 2 # SPDX-License-Identifier: GPL-2.0-only
3 # (c) 2009, Tom Zanussi <tzanussi@gmail.com> 3 # (c) 2009, Tom Zanussi <tzanussi@gmail.com>
4 4
5 # Display r/w activity for files read/written 5 # Display r/w activity for files read/written to for a given program
6 6
7 # The common_* event handler fields are the mo 7 # The common_* event handler fields are the most useful fields common to
8 # all events. They don't necessarily correspo 8 # all events. They don't necessarily correspond to the 'common_*' fields
9 # in the status files. Those fields not avail 9 # in the status files. Those fields not available as handler params can
10 # be retrieved via script functions of the for 10 # be retrieved via script functions of the form get_common_*().
11 11
12 use 5.010000; 12 use 5.010000;
13 use strict; 13 use strict;
14 use warnings; 14 use warnings;
15 15
16 use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/P 16 use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
17 use lib "./Perf-Trace-Util/lib"; 17 use lib "./Perf-Trace-Util/lib";
18 use Perf::Trace::Core; 18 use Perf::Trace::Core;
19 use Perf::Trace::Util; 19 use Perf::Trace::Util;
20 20
21 my $usage = "perf script -s rw-by-file.pl <com 21 my $usage = "perf script -s rw-by-file.pl <comm>\n";
22 22
23 my $for_comm = shift or die $usage; 23 my $for_comm = shift or die $usage;
24 24
25 my %reads; 25 my %reads;
26 my %writes; 26 my %writes;
27 27
28 sub syscalls::sys_enter_read 28 sub syscalls::sys_enter_read
29 { 29 {
30 my ($event_name, $context, $common_cpu, $c 30 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
31 $common_pid, $common_comm, $common_cal 31 $common_pid, $common_comm, $common_callchain, $nr, $fd, $buf, $count) = @_;
32 32
33 if ($common_comm eq $for_comm) { 33 if ($common_comm eq $for_comm) {
34 $reads{$fd}{bytes_requested} += $count 34 $reads{$fd}{bytes_requested} += $count;
35 $reads{$fd}{total_reads}++; 35 $reads{$fd}{total_reads}++;
36 } 36 }
37 } 37 }
38 38
39 sub syscalls::sys_enter_write 39 sub syscalls::sys_enter_write
40 { 40 {
41 my ($event_name, $context, $common_cpu, $c 41 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
42 $common_pid, $common_comm, $common_cal 42 $common_pid, $common_comm, $common_callchain, $nr, $fd, $buf, $count) = @_;
43 43
44 if ($common_comm eq $for_comm) { 44 if ($common_comm eq $for_comm) {
45 $writes{$fd}{bytes_written} += $count; 45 $writes{$fd}{bytes_written} += $count;
46 $writes{$fd}{total_writes}++; 46 $writes{$fd}{total_writes}++;
47 } 47 }
48 } 48 }
49 49
50 sub trace_end 50 sub trace_end
51 { 51 {
52 printf("file read counts for $for_comm:\n\ 52 printf("file read counts for $for_comm:\n\n");
53 53
54 printf("%6s %10s %10s\n", "fd", "# reads 54 printf("%6s %10s %10s\n", "fd", "# reads", "bytes_requested");
55 printf("%6s %10s %10s\n", "------", "--- 55 printf("%6s %10s %10s\n", "------", "----------", "-----------");
56 56
57 foreach my $fd (sort {$reads{$b}{bytes_req 57 foreach my $fd (sort {$reads{$b}{bytes_requested} <=>
58 $reads{$a}{bytes 58 $reads{$a}{bytes_requested}} keys %reads) {
59 my $total_reads = $reads{$fd}{total_re 59 my $total_reads = $reads{$fd}{total_reads};
60 my $bytes_requested = $reads{$fd}{byte 60 my $bytes_requested = $reads{$fd}{bytes_requested};
61 printf("%6u %10u %10u\n", $fd, $tota 61 printf("%6u %10u %10u\n", $fd, $total_reads, $bytes_requested);
62 } 62 }
63 63
64 printf("\nfile write counts for $for_comm: 64 printf("\nfile write counts for $for_comm:\n\n");
65 65
66 printf("%6s %10s %10s\n", "fd", "# write 66 printf("%6s %10s %10s\n", "fd", "# writes", "bytes_written");
67 printf("%6s %10s %10s\n", "------", "--- 67 printf("%6s %10s %10s\n", "------", "----------", "-----------");
68 68
69 foreach my $fd (sort {$writes{$b}{bytes_wr 69 foreach my $fd (sort {$writes{$b}{bytes_written} <=>
70 $writes{$a}{byte 70 $writes{$a}{bytes_written}} keys %writes) {
71 my $total_writes = $writes{$fd}{total_ 71 my $total_writes = $writes{$fd}{total_writes};
72 my $bytes_written = $writes{$fd}{bytes 72 my $bytes_written = $writes{$fd}{bytes_written};
73 printf("%6u %10u %10u\n", $fd, $tota 73 printf("%6u %10u %10u\n", $fd, $total_writes, $bytes_written);
74 } 74 }
75 75
76 print_unhandled(); 76 print_unhandled();
77 } 77 }
78 78
79 my %unhandled; 79 my %unhandled;
80 80
81 sub print_unhandled 81 sub print_unhandled
82 { 82 {
83 if ((scalar keys %unhandled) == 0) { 83 if ((scalar keys %unhandled) == 0) {
84 return; 84 return;
85 } 85 }
86 86
87 print "\nunhandled events:\n\n"; 87 print "\nunhandled events:\n\n";
88 88
89 printf("%-40s %10s\n", "event", "count"); 89 printf("%-40s %10s\n", "event", "count");
90 printf("%-40s %10s\n", "----------------- 90 printf("%-40s %10s\n", "----------------------------------------",
91 "-----------"); 91 "-----------");
92 92
93 foreach my $event_name (keys %unhandled) { 93 foreach my $event_name (keys %unhandled) {
94 printf("%-40s %10d\n", $event_name, $ 94 printf("%-40s %10d\n", $event_name, $unhandled{$event_name});
95 } 95 }
96 } 96 }
97 97
98 sub trace_unhandled 98 sub trace_unhandled
99 { 99 {
100 my ($event_name, $context, $common_cpu, $c 100 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
101 $common_pid, $common_comm, $common_cal 101 $common_pid, $common_comm, $common_callchain) = @_;
102 102
103 $unhandled{$event_name}++; 103 $unhandled{$event_name}++;
104 } 104 }
105 105
106 106
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