tree 6317cd01c2a758908f747f2c0b110dd40b9dc6d9
parent 3879b6b6a8ee39b50559b2c2dd083c557d39e0f8
author Zach Brown <zach.brown@oracle.com> 1159863375 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1159887860 -0700

[PATCH] pr_debug: check pr_debug() arguments

check pr_debug() arguments

When DEBUG isn't defined pr_debug() is defined away as an empty macro.  By
throwing away the arguments we allow completely incorrect code to build.

Instead let's make it an empty inline which checks arguments and mark it so gcc
can check the format specification.

This results in a seemingly insignificant code size increase.  A x86-64
allyesconfig:

   text    data     bss     dec     hex filename
25354768        7191098 4854720 37400586        23ab00a vmlinux.before
25354945        7191138 4854720 37400803        23ab0e3 vmlinux

Signed-off-by: Zach Brown <zach.brown@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>