linux/tools/perf/util/perf_regs.h
Namhyung Kim 95485b1cda perf tools: Convert to LIBUNWIND_SUPPORT
For building perf without libunwind, we can set NO_LIBUNWIND=1 as a
argument of make.  It then defines NO_LIBUNWIND_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.

Also change NO_PERF_REGS macro to HAVE_PERF_REGS for the same reason.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1348824728-14025-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-02 17:56:01 -03:00

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C

#ifndef __PERF_REGS_H
#define __PERF_REGS_H
#ifdef HAVE_PERF_REGS
#include <perf_regs.h>
#else
#define PERF_REGS_MASK 0
static inline const char *perf_reg_name(int id __maybe_unused)
{
return NULL;
}
#endif /* HAVE_PERF_REGS */
#endif /* __PERF_REGS_H */