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Full Discussion: Use of goto keyword in kernel programming
Operating Systems Linux Ubuntu Use of goto keyword in kernel programming Post 302967974 by BHASKAR JUPUDI on Tuesday 1st of March 2016 10:36:42 PM
Old 03-01-2016
Use of goto keyword in kernel programming
I have found many source files in the kernel using goto keyword instead of just doing the actual thing. For example:

Code:
if(blah)
goto x;
--
--
--
--
--

x: return blah-blah

Is there any specific reason for writing the code like this? The first thought that came to my mind is minimizing code duplication. If we are going to change the
Code:
return (blah-blah)

then with the use of goto we have to change only one instance of it. I'm asking this because if we consider the above situation, if we replace
Code:
goto x

with
Code:
return blah-blah

(to avoid the overhead of calling goto) then will that be a patch?
 

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LEARN ABOUT DEBIAN

import-bug-from-debian

import-bug-from-debian(1)				      General Commands Manual					 import-bug-from-debian(1)

NAME

       import-bug-from-debian - Import bugs from Debian's BTS, and file them against Ubuntu in LP.

SYNOPSIS

       import-bug-from-debian [options] bug...
       import-bug-from-debian -h

DESCRIPTION

       import-bug-from-debian  clones  bugs  from Debian's BTS into Launchpad. Each bug listed on the command line has its initial report re-filed
       against the same source package in Ubuntu.  The Ubuntu bug is linked back to its Debian counterpart.

       Each bug may be provided either as a bug number or URL.

OPTIONS

       -b, --browserless
	      Don't open the bug in a browser at the end.

       -h, --help
	      Display a help message and exit.

       -l INSTANCE, --lpinstance=INSTANCE
	      Use the specified instance of Launchpad (e.g. "staging"), instead of the default of "production".

       -p PACKAGE, --package=PACKAGE
	      Launchpad package to file bug against, if not the same source package name as Debian.   Useful  for  importing  removal  bugs  filed
	      against ftp.debian.org.

       --no-conf
	      Do not read any configuration files, or configuration from environment variables.

ENVIRONMENT

       All  of	the  CONFIGURATION  VARIABLES  below are also supported as environment variables.  Variables in the environment take precedence to
       those in configuration files.

CONFIGURATION VARIABLES

       The following variables can be set in the environment or in ubuntu-dev-tools(5) configuration files.  In  each  case,  the  script-specific
       variable takes precedence over the package-wide variable.

       IMPORT_BUG_FROM_DEBIAN_LPINSTANCE, UBUNTUTOOLS_LPINSTANCE
	      The default value for --lpinstance.

SEE ALSO

       ubuntu-dev-tools(5)

AUTHORS

       import-bug-from-debian  was  written  by  James	Westby <james.westby@ubuntu.com>, and this manual page was written by Stefano Rivera <ste-
       fanor@ubuntu.com>.

       Both are released under the terms of the GNU General Public License, version 2.

ubuntu-dev-tools						 September 21 2010					 import-bug-from-debian(1)
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