#!/usr/bin/perl # Read two files produced by the stackusage script, and show the # delta between them. # # Currently, only shows changes for functions listed in both files. We # could add an option to show also functions which have vanished or # appeared (which would often be due to gcc making other inlining # decisions). # # Another possible option would be a minimum absolute value for the # delta. # # A third possibility is for sorting by delta, but that can be # achieved by piping to sort -k5,5g. sub read_stack_usage_file { my %su; my $f = shift; open(my $fh, '<', $f) or die "cannot open $f: $!"; while (<$fh>) { chomp; my ($file, $func, $size, $type) = split; # Old versions of gcc (at least 4.7) have an annoying quirk in # that a (static) function whose name has been changed into # for example ext4_find_unwritten_pgoff.isra.11 will show up # in the .su file with a name of just "11". Since such a # numeric suffix is likely to change across different # commits/compilers/.configs or whatever else we're trying to # tweak, we can't really track those functions, so we just # silently skip them. # # Newer gcc (at least 5.0) report the full name, so again, # since the suffix is likely to change, we strip it. next if $func =~ m/^[0-9]+$/; $func =~ s/\..*$//; # Line numbers are likely to change; strip those. $file =~ s/:[0-9]+$//; $su{"${file}\t${func}"} = {size => $size, type => $type}; } close($fh); return \%su; } @ARGV == 2 or die "usage: $0 "; my $old = read_stack_usage_file($ARGV[0]); my $new = read_stack_usage_file($ARGV[1]); my @common = sort grep {exists $new->{$_}} keys %$old; for (@common) { my $x = $old->{$_}{size}; my $y = $new->{$_}{size}; my $delta = $y - $x; if ($delta) { printf "%s\t%d\t%d\t%+d\n", $_, $x, $y, $delta; } } >logtreecommitdiff
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authorAlexander Stein <alexander.stein@systec-electronic.com>2017-01-30 12:35:28 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-01-30 15:53:57 +0100
commitcdca06e4e85974d8a3503ab15709dbbaf90d3dd1 (patch)
tree268b0c01070a957006db97c88dccb5fb061440ff /include/net/flow.h
parent1b89970d81bbd52720fc64a3fe9572ee33588363 (diff)
pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler
According to VLI64 Intel Atom E3800 Specification Update (#329901) concurrent read accesses may result in returning 0xffffffff and write accesses may be dropped silently. To workaround all accesses must be protected by locks. Cc: stable@vger.kernel.org Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/net/flow.h')