diff options
| author | Paul Jackson <pj@sgi.com> | 2008-05-14 19:15:23 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-25 12:55:11 +0400 |
| commit | c801ed3860fe2f84281d4cae4c3e6ca87e81e890 (patch) | |
| tree | 959f561835bd686cc7b8e711bd8d32edb8aa0e48 | |
| parent | cb5dd7c104c64d7ba8ff4dd3eec3d9b92c378937 (diff) | |
| download | linux-c801ed3860fe2f84281d4cae4c3e6ca87e81e890.tar.xz | |
x86 boot: simplify pageblock_bits enum declaration
The use of #defines with '##' pre-processor concatenation is a useful
way to form several symbol names with a common pattern. But when there
is just a single name obtained from that #define, it's just obfuscation.
Better to just write the plain symbol name, as is.
The following patch is a result of my wasting ten minutes looking through
the kernel to figure out what 'PB_migrate_end' meant, and forgetting what
I came to do, by the time I figured out that the #define PB_range macro
defined it.
Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | include/linux/pageblock-flags.h | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h index e875905f7b12..e8c06122be36 100644 --- a/include/linux/pageblock-flags.h +++ b/include/linux/pageblock-flags.h @@ -25,13 +25,11 @@ #include <linux/types.h> -/* Macro to aid the definition of ranges of bits */ -#define PB_range(name, required_bits) \ - name, name ## _end = (name + required_bits) - 1 - /* Bit indices that affect a whole block of pages */ enum pageblock_bits { - PB_range(PB_migrate, 3), /* 3 bits required for migrate types */ + PB_migrate, + PB_migrate_end = PB_migrate + 3 - 1, + /* 3 bits required for migrate types */ NR_PAGEBLOCK_BITS }; |