diff options
author | Andi Kleen <andi@firstfloor.org> | 2008-10-16 07:02:02 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-16 20:21:32 +0200 |
commit | 20036fdcaf05fac0a84ed81a56906493a7d822e2 (patch) | |
tree | df06d92ffa8190dfafa59cbb7528564f8d0a055a /lib | |
parent | SubmittingPatches: add a reference to Andi's OLS paper (diff) | |
download | linux-20036fdcaf05fac0a84ed81a56906493a7d822e2.tar.xz linux-20036fdcaf05fac0a84ed81a56906493a7d822e2.zip |
Add kerneldoc documentation for new printk format extensions
Add documentation in kerneldoc for new printk format extensions
This patch documents the new %pS/%pF options in printk in kernel doc.
Hope I didn't miss any other extension.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/vsprintf.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index c399bc1093cb..4c6674a41ed9 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -565,6 +565,10 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field * @fmt: The format string to use * @args: Arguments for the format string * + * 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 + * * The return value is the number of characters which would * be generated for the given input, excluding the trailing * '\0', as per ISO C99. If you want to have the exact @@ -806,6 +810,8 @@ EXPORT_SYMBOL(vsnprintf); * * Call this function if you are already dealing with a va_list. * You probably want scnprintf() instead. + * + * See the vsnprintf() documentation for format string extensions over C99. */ int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) { @@ -828,6 +834,8 @@ EXPORT_SYMBOL(vscnprintf); * generated for the given input, excluding the trailing null, * as per ISO C99. If the return is greater than or equal to * @size, the resulting string is truncated. + * + * See the vsnprintf() documentation for format string extensions over C99. */ int snprintf(char * buf, size_t size, const char *fmt, ...) { @@ -877,6 +885,8 @@ EXPORT_SYMBOL(scnprintf); * * Call this function if you are already dealing with a va_list. * You probably want sprintf() instead. + * + * See the vsnprintf() documentation for format string extensions over C99. */ int vsprintf(char *buf, const char *fmt, va_list args) { @@ -894,6 +904,8 @@ EXPORT_SYMBOL(vsprintf); * The function returns the number of characters written * into @buf. Use snprintf() or scnprintf() in order to avoid * buffer overflows. + * + * See the vsnprintf() documentation for format string extensions over C99. */ int sprintf(char * buf, const char *fmt, ...) { |