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author | Rasmus Villemoes <linux@rasmusvillemoes.dk> | 2015-11-06 16:31:20 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 17:50:42 -0800 |
commit | 0a9df786a6ae2f898114bdd242b64920dedf53bd (patch) | |
tree | 2c693d2a4038f96f03f2d44dfafc6180d457affb /lib/kobject.c | |
parent | 2cf12f821cd4f996bfabeec23d8f25e7a2052a28 (diff) |
lib/kasprintf.c: introduce kvasprintf_const
This adds kvasprintf_const which tries to use kstrdup_const if possible:
If the format string contains no % characters, or if the format string is
exactly "%s", we delegate to kstrdup_const. Otherwise, we fall back to
kvasprintf.
Just as for kstrdup_const, the main motivation is to save memory by
reusing .rodata when possible.
The return value should be freed by kfree_const, just like for
kstrdup_const.
There is deliberately no kasprintf_const: In the vast majority of cases,
the format string argument is a literal, so one can determine statically
whether one could instead use kstrdup_const directly (which would also
require one to change all corresponding kfree calls to kfree_const).
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/kobject.c')
0 files changed, 0 insertions, 0 deletions