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| author | Namhyung Kim <namhyung.kim@lge.com> | 2012-09-28 18:31:59 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-28 21:07:36 -0300 |
| commit | 29a0fc9b2b6084e7a8810481df62a0fa496d8957 (patch) | |
| tree | b14fcf9ba9c906ae969daa242057b391bd93ba81 /tools/perf/util/symbol.h | |
| parent | e4898336a1b4d8a259663d15b12f359b6c2887a2 (diff) | |
| download | lwn-29a0fc9b2b6084e7a8810481df62a0fa496d8957.tar.gz lwn-29a0fc9b2b6084e7a8810481df62a0fa496d8957.zip | |
perf tools: Convert to LIBELF_SUPPORT
For building perf without libelf, we can set NO_LIBELF=1 as a argument
of make. It then defines NO_LIBELF_SUPPORT macro for C code to do the
proper handling. However it usually used in a negative semantics -
e.g. #ifndef - so we saw double negations which can be misleading.
Convert it to a positive form to make it more readable.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1348824728-14025-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/symbol.h')
| -rw-r--r-- | tools/perf/util/symbol.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index b441b07172b7..8b6ef7fac745 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -12,7 +12,7 @@ #include <byteswap.h> #include <libgen.h> -#ifndef NO_LIBELF_SUPPORT +#ifdef LIBELF_SUPPORT #include <libelf.h> #include <gelf.h> #include <elf.h> @@ -46,10 +46,10 @@ char *strxfrchar(char *s, char from, char to); * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP; * for newer versions we can use mmap to reduce memory usage: */ -#ifdef LIBELF_NO_MMAP -# define PERF_ELF_C_READ_MMAP ELF_C_READ -#else +#ifdef LIBELF_MMAP # define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP +#else +# define PERF_ELF_C_READ_MMAP ELF_C_READ #endif #ifndef DMGL_PARAMS @@ -233,7 +233,7 @@ struct symsrc { int fd; enum dso_binary_type type; -#ifndef NO_LIBELF_SUPPORT +#ifdef LIBELF_SUPPORT Elf *elf; GElf_Ehdr ehdr; |