LU-9859 libcfs: discard MKSTR() macro

This is only used for tracing when some strings might
be NULL.  NULL strings are not a problem for tracing,
vnsprintf() will report them as "(null)" which is probably
better (easier to parse) than an empty string.

Linux-commit: dd0393a5f29633f0e3d52e4c26ae4123c873c016

Test-Parameters: trivial
Change-Id: Ia305ea0d0dc05602a03dea589f928b6a599ee55e
Signed-off-by: Mr. NeilBrown <neilb@suse.de>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50376
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/libcfs/include/libcfs/libcfs_private.h b/libcfs/include/libcfs/libcfs_private.h
index 02fc165..fb42b99 100644 (file)
--- a/libcfs/include/libcfs/libcfs_private.h
+++ b/libcfs/include/libcfs/libcfs_private.h
@@ -333,8 +333,6 @@ do {                                                            \
 /* logical equivalence */
 #define equi(a, b) (!!(a) == !!(b))
 
-#define MKSTR(ptr) ((ptr))? (ptr) : ""
-
 #ifndef HAVE_CFS_SIZE_ROUND
 static inline size_t cfs_size_round(size_t val)
 {