mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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1d037ca164
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>
42 lines
817 B
C
42 lines
817 B
C
/*
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* Various trivial helper wrappers around standard functions
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*/
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#include "cache.h"
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/*
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* There's no pack memory to release - but stay close to the Git
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* version so wrap this away:
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*/
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static inline void release_pack_memory(size_t size __maybe_unused,
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int flag __maybe_unused)
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{
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}
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char *xstrdup(const char *str)
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{
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char *ret = strdup(str);
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if (!ret) {
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release_pack_memory(strlen(str) + 1, -1);
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ret = strdup(str);
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if (!ret)
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die("Out of memory, strdup failed");
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}
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return ret;
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}
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void *xrealloc(void *ptr, size_t size)
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{
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void *ret = realloc(ptr, size);
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if (!ret && !size)
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ret = realloc(ptr, 1);
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if (!ret) {
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release_pack_memory(size, -1);
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ret = realloc(ptr, size);
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if (!ret && !size)
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ret = realloc(ptr, 1);
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if (!ret)
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die("Out of memory, realloc failed");
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}
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return ret;
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}
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