#!/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; } } move'>logtreecommitdiff
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authorJohan Hovold <johan@kernel.org>2017-01-30 11:26:38 +0100
committerJiri Kosina <jkosina@suse.cz>2017-01-31 12:59:32 +0100
commit7a7b5df84b6b4e5d599c7289526eed96541a0654 (patch)
treecf7514c7ddf4410fe37ca9099a2785e1cf08fa7d /sound/pci/nm256/Makefile
parent877a021e08ccb6434718c0cc781fdf943c884cc0 (diff)
HID: cp2112: fix sleep-while-atomic
A recent commit fixing DMA-buffers on stack added a shared transfer buffer protected by a spinlock. This is broken as the USB HID request callbacks can sleep. Fix this up by replacing the spinlock with a mutex. Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable") Cc: stable <stable@vger.kernel.org> # 4.9 Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'sound/pci/nm256/Makefile')