Commit 769f3e8c authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  vsprintf: introduce %pf format specifier
  printk: add support of hh length modifier for printk
parents c0d25450 0c8b946e
......@@ -408,6 +408,8 @@ enum format_type {
FORMAT_TYPE_LONG_LONG,
FORMAT_TYPE_ULONG,
FORMAT_TYPE_LONG,
FORMAT_TYPE_UBYTE,
FORMAT_TYPE_BYTE,
FORMAT_TYPE_USHORT,
FORMAT_TYPE_SHORT,
FORMAT_TYPE_UINT,
......@@ -573,12 +575,15 @@ static char *string(char *buf, char *end, char *s, struct printf_spec spec)
}
static char *symbol_string(char *buf, char *end, void *ptr,
struct printf_spec spec)
struct printf_spec spec, char ext)
{
unsigned long value = (unsigned long) ptr;
#ifdef CONFIG_KALLSYMS
char sym[KSYM_SYMBOL_LEN];
sprint_symbol(sym, value);
if (ext != 'f')
sprint_symbol(sym, value);
else
kallsyms_lookup(value, NULL, NULL, NULL, sym);
return string(buf, end, sym, spec);
#else
spec.field_width = 2*sizeof(void *);
......@@ -690,7 +695,8 @@ static char *ip4_addr_string(char *buf, char *end, u8 *addr,
*
* Right now we handle:
*
* - 'F' For symbolic function descriptor pointers
* - 'F' For symbolic function descriptor pointers with offset
* - 'f' For simple symbolic function names without offset
* - 'S' For symbolic direct pointers
* - 'R' For a struct resource pointer, it prints the range of
* addresses (not the name nor the flags)
......@@ -713,10 +719,11 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
switch (*fmt) {
case 'F':
case 'f':
ptr = dereference_function_descriptor(ptr);
/* Fallthrough */
case 'S':
return symbol_string(buf, end, ptr, spec);
return symbol_string(buf, end, ptr, spec, *fmt);
case 'R':
return resource_string(buf, end, ptr, spec);
case 'm':
......@@ -853,11 +860,15 @@ static int format_decode(const char *fmt, struct printf_spec *spec)
spec->qualifier = -1;
if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
*fmt == 'Z' || *fmt == 'z' || *fmt == 't') {
spec->qualifier = *fmt;
++fmt;
if (spec->qualifier == 'l' && *fmt == 'l') {
spec->qualifier = 'L';
++fmt;
spec->qualifier = *fmt++;
if (unlikely(spec->qualifier == *fmt)) {
if (spec->qualifier == 'l') {
spec->qualifier = 'L';
++fmt;
} else if (spec->qualifier == 'h') {
spec->qualifier = 'H';
++fmt;
}
}
}
......@@ -919,6 +930,11 @@ static int format_decode(const char *fmt, struct printf_spec *spec)
spec->type = FORMAT_TYPE_SIZE_T;
} else if (spec->qualifier == 't') {
spec->type = FORMAT_TYPE_PTRDIFF;
} else if (spec->qualifier == 'H') {
if (spec->flags & SIGN)
spec->type = FORMAT_TYPE_BYTE;
else
spec->type = FORMAT_TYPE_UBYTE;
} else if (spec->qualifier == 'h') {
if (spec->flags & SIGN)
spec->type = FORMAT_TYPE_SHORT;
......@@ -943,7 +959,8 @@ static int format_decode(const char *fmt, struct printf_spec *spec)
*
* This function follows C99 vsnprintf, but has some extensions:
* %pS output the name of a text symbol
* %pF output the name of a function pointer
* %pF output the name of a function pointer with its offset
* %pf output the name of a function pointer without its offset
* %pR output the address range in a struct resource
*
* The return value is the number of characters which would
......@@ -1087,6 +1104,12 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
case FORMAT_TYPE_PTRDIFF:
num = va_arg(args, ptrdiff_t);
break;
case FORMAT_TYPE_UBYTE:
num = (unsigned char) va_arg(args, int);
break;
case FORMAT_TYPE_BYTE:
num = (signed char) va_arg(args, int);
break;
case FORMAT_TYPE_USHORT:
num = (unsigned short) va_arg(args, int);
break;
......@@ -1363,6 +1386,10 @@ do { \
case FORMAT_TYPE_PTRDIFF:
save_arg(ptrdiff_t);
break;
case FORMAT_TYPE_UBYTE:
case FORMAT_TYPE_BYTE:
save_arg(char);
break;
case FORMAT_TYPE_USHORT:
case FORMAT_TYPE_SHORT:
save_arg(short);
......@@ -1391,7 +1418,8 @@ EXPORT_SYMBOL_GPL(vbin_printf);
*
* The format follows C99 vsnprintf, but has some extensions:
* %pS output the name of a text symbol
* %pF output the name of a function pointer
* %pF output the name of a function pointer with its offset
* %pf output the name of a function pointer without its offset
* %pR output the address range in a struct resource
* %n is ignored
*
......@@ -1538,6 +1566,12 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
case FORMAT_TYPE_PTRDIFF:
num = get_arg(ptrdiff_t);
break;
case FORMAT_TYPE_UBYTE:
num = get_arg(unsigned char);
break;
case FORMAT_TYPE_BYTE:
num = get_arg(signed char);
break;
case FORMAT_TYPE_USHORT:
num = get_arg(unsigned short);
break;
......
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