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lib/vsprintf.c: remove %Z support

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Now that %z is standartised in C99 there is no reason to support %Z.
Unlike %L it doesn't even make format strings smaller.

Use BUILD_BUG_ON in a couple ATM drivers.

In case anyone didn't notice lib/vsprintf.o is about half of SLUB which
is in my opinion is quite an achievement.  Hopefully this patch inspires
someone else to trim vsprintf.c more.

Link: http://lkml.kernel.org/r/20170103230126.GA30170@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan
2017-02-27 14:30:02 -08:00
committed by Linus Torvalds
parent d7f6724366
commit 5b5e0928f7
79 changed files with 187 additions and 201 deletions
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8
lib/vsprintf.c
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@@ -1739,6 +1739,7 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
* 'h', 'l', or 'L' for integer fields
* 'z' support added 23/7/1999 S.H.
* 'z' changed to 'Z' --davidm 1/25/99
* 'Z' changed to 'z' --adobriyan 2017-01-25
* 't' added for ptrdiff_t
*
* @fmt: the format string
@@ -1838,7 +1839,7 @@ qualifier:
/* get the conversion qualifier */
qualifier = 0;
if (*fmt == 'h' || _tolower(*fmt) == 'l' ||
_tolower(*fmt) == 'z' || *fmt == 't') {
*fmt == 'z' || *fmt == 't') {
qualifier = *fmt++;
if (unlikely(qualifier == *fmt)) {
if (qualifier == 'l') {
@@ -1907,7 +1908,7 @@ qualifier:
else if (qualifier == 'l') {
BUILD_BUG_ON(FORMAT_TYPE_ULONG + SIGN != FORMAT_TYPE_LONG);
spec->type = FORMAT_TYPE_ULONG + (spec->flags & SIGN);
} else if (_tolower(qualifier) == 'z') {
} else if (qualifier == 'z') {
spec->type = FORMAT_TYPE_SIZE_T;
} else if (qualifier == 't') {
spec->type = FORMAT_TYPE_PTRDIFF;
@@ -2657,7 +2658,7 @@ int vsscanf(const char *buf, const char *fmt, va_list args)
/* get conversion qualifier */
qualifier = -1;
if (*fmt == 'h' || _tolower(*fmt) == 'l' ||
_tolower(*fmt) == 'z') {
*fmt == 'z') {
qualifier = *fmt++;
if (unlikely(qualifier == *fmt)) {
if (qualifier == 'h') {
@@ -2851,7 +2852,6 @@ int vsscanf(const char *buf, const char *fmt, va_list args)
else
*va_arg(args, unsigned long long *) = val.u;
break;
case 'Z':
case 'z':
*va_arg(args, size_t *) = val.u;
break;