scripts/bootgraph.pl

Source file repositories/reference/linux-study-clean/scripts/bootgraph.pl

File Facts

System
Linux kernel
Corpus path
scripts/bootgraph.pl
Extension
.pl
Size
5780 bytes
Lines
225
Domain
Support Tooling And Documentation
Bucket
scripts
Inferred role
Support Tooling And Documentation: scripts
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if ($done == 0) {
			$start{$func} = $1;
			$type{$func} = 0;
			if ($1 < $firsttime) {
				$firsttime = $1;
			}
		}
		if ($line =~ /\@ ([0-9]+)/) {
			$pids{$func} = $1;
		}
		$count = $count + 1;
	}

	if ($line =~ /([0-9\.]+)\] async_waiting @ ([0-9]+)/) {
		my $pid = $2;
		my $func;
		if (!defined($pidctr{$pid})) {
			$func = "wait_" . $pid . "_1";
			$pidctr{$pid} = 1;
		} else {
			$pidctr{$pid} = $pidctr{$pid} + 1;
			$func = "wait_" . $pid . "_" . $pidctr{$pid};
		}
		if ($done == 0) {
			$start{$func} = $1;
			$type{$func} = 1;
			if ($1 < $firsttime) {
				$firsttime = $1;
			}
		}
		$pids{$func} = $pid;
		$count = $count + 1;
	}

	if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_\.]+)\+.*returned/) {
		if ($done == 0) {
			$end{$2} = $1;
			$maxtime = $1;
		}
	}

	if ($line =~ /([0-9\.]+)\] async_continuing @ ([0-9]+)/) {
		my $pid = $2;
		my $func =  "wait_" . $pid . "_" . $pidctr{$pid};
		$end{$func} = $1;
		$maxtime = $1;
	}
	if ($line =~ /Write protecting the/) {
		$done = 1;
	}
	if ($line =~ /Freeing unused kernel memory/) {
		$done = 1;
	}
}

if ($count == 0) {
    print STDERR <<END;
No data found in the dmesg. Make sure that 'printk.time=1' and
'initcall_debug' are passed on the kernel command line.
END
	help(1);
    exit 1;
}

print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
print "<svg width=\"2000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n";


if ($header) {
	my $version = `uname -a`;

Annotation

Implementation Notes