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| author | Sam Ravnborg <sam@ravnborg.org> | 2009-04-10 13:18:08 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2009-04-11 08:18:11 +0200 |
| commit | 20375bf82567b5fecd331048c6cc1fc292b67710 (patch) | |
| tree | 1dc36f316f8e8d27d282f6cea6cf5adc97531b65 | |
| parent | kbuild: make it possible for the linker to discard local symbols from vmlinux (diff) | |
| download | linux-20375bf82567b5fecd331048c6cc1fc292b67710.tar.xz linux-20375bf82567b5fecd331048c6cc1fc292b67710.zip | |
Documentation: explain the difference between __bitwise and __bitwise__
Simply added explanation from Al Viro in the following mail:
http://lkml.indiana.edu/hypermail/linux/kernel/0802.2/3164.html
Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| -rw-r--r-- | Documentation/sparse.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/sparse.txt b/Documentation/sparse.txt index 42f43fa59f24..34c76a55bc04 100644 --- a/Documentation/sparse.txt +++ b/Documentation/sparse.txt @@ -42,6 +42,14 @@ sure that bitwise types don't get mixed up (little-endian vs big-endian vs cpu-endian vs whatever), and there the constant "0" really _is_ special. +__bitwise__ - to be used for relatively compact stuff (gfp_t, etc.) that +is mostly warning-free and is supposed to stay that way. Warnings will +be generated without __CHECK_ENDIAN__. + +__bitwise - noisy stuff; in particular, __le*/__be* are that. We really +don't want to drown in noise unless we'd explicitly asked for it. + + Getting sparse ~~~~~~~~~~~~~~ |