debuggers.hg

changeset 21051:0d85c05b1554

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blktap: provide a variant of __RING_SIZE() that is an integer constant expression

Without this new variant, gcc 4.5 won't compile where this is being
used to specify array sizes. See also c/s 20975.

Signed-off-by: Charles Arnold <carnold@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Sat Mar 06 13:31:03 2010 +0000 (2010-03-06)
parents b82dd03944e0
children 8dada4c897c9
files tools/blktap/lib/blktaplib.h tools/blktap2/include/blktaplib.h
line diff
     1.1 --- a/tools/blktap/lib/blktaplib.h	Fri Mar 05 14:42:25 2010 +0000
     1.2 +++ b/tools/blktap/lib/blktaplib.h	Sat Mar 06 13:31:03 2010 +0000
     1.3 @@ -42,7 +42,7 @@
     1.4  #include <sys/types.h>
     1.5  #include <unistd.h>
     1.6  
     1.7 -#define BLK_RING_SIZE __RING_SIZE((blkif_sring_t *)0, XC_PAGE_SIZE)
     1.8 +#define BLK_RING_SIZE __CONST_RING_SIZE(blkif, XC_PAGE_SIZE)
     1.9  
    1.10  /* size of the extra VMA area to map in attached pages. */
    1.11  #define BLKTAP_VMA_PAGES BLK_RING_SIZE

     2.1 --- a/tools/blktap2/include/blktaplib.h	Fri Mar 05 14:42:25 2010 +0000
     2.2 +++ b/tools/blktap2/include/blktaplib.h	Sat Mar 06 13:31:03 2010 +0000
     2.3 @@ -45,7 +45,7 @@
     2.4  #define EPRINTF(_f, _a...) syslog(LOG_ERR, "tap-err:%s: " _f, __func__, ##_a)
     2.5  #define PERROR(_f, _a...)  EPRINTF(_f ": %s", ##_a, strerror(errno))
     2.6  
     2.7 -#define BLK_RING_SIZE __RING_SIZE((blkif_sring_t *)0, XC_PAGE_SIZE)
     2.8 +#define BLK_RING_SIZE __CONST_RING_SIZE(blkif, XC_PAGE_SIZE)
     2.9  
    2.10  /* size of the extra VMA area to map in attached pages. */
    2.11  #define BLKTAP_VMA_PAGES BLK_RING_SIZE