mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
![Irina Tirdea](/assets/img/avatar_default.png)
perf defines both __used and __unused variables to use for marking
unused variables. The variable __used is defined to
__attribute__((__unused__)), which contradicts the kernel definition to
__attribute__((__used__)) for new gcc versions. On Android, __used is
also defined in system headers and this leads to warnings like: warning:
'__used__' attribute ignored
__unused is not defined in the kernel and is not a standard definition.
If __unused is included everywhere instead of __used, this leads to
conflicts with glibc headers, since glibc has a variables with this name
in its headers.
The best approach is to use __maybe_unused, the definition used in the
kernel for __attribute__((unused)). In this way there is only one
definition in perf sources (instead of 2 definitions that point to the
same thing: __used and __unused) and it works on both Linux and Android.
This patch simply replaces all instances of __used and __unused with
__maybe_unused.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com
[ committer note: fixed up conflict with a116e05
in builtin-sched.c ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
41 lines
817 B
C
41 lines
817 B
C
/*
|
|
* Various trivial helper wrappers around standard functions
|
|
*/
|
|
#include "cache.h"
|
|
|
|
/*
|
|
* There's no pack memory to release - but stay close to the Git
|
|
* version so wrap this away:
|
|
*/
|
|
static inline void release_pack_memory(size_t size __maybe_unused,
|
|
int flag __maybe_unused)
|
|
{
|
|
}
|
|
|
|
char *xstrdup(const char *str)
|
|
{
|
|
char *ret = strdup(str);
|
|
if (!ret) {
|
|
release_pack_memory(strlen(str) + 1, -1);
|
|
ret = strdup(str);
|
|
if (!ret)
|
|
die("Out of memory, strdup failed");
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void *xrealloc(void *ptr, size_t size)
|
|
{
|
|
void *ret = realloc(ptr, size);
|
|
if (!ret && !size)
|
|
ret = realloc(ptr, 1);
|
|
if (!ret) {
|
|
release_pack_memory(size, -1);
|
|
ret = realloc(ptr, size);
|
|
if (!ret && !size)
|
|
ret = realloc(ptr, 1);
|
|
if (!ret)
|
|
die("Out of memory, realloc failed");
|
|
}
|
|
return ret;
|
|
}
|