mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 07:04:00 +08:00
95485b1cda
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>
36 lines
830 B
C
36 lines
830 B
C
#ifndef __UNWIND_H
|
|
#define __UNWIND_H
|
|
|
|
#include "types.h"
|
|
#include "event.h"
|
|
#include "symbol.h"
|
|
|
|
struct unwind_entry {
|
|
struct map *map;
|
|
struct symbol *sym;
|
|
u64 ip;
|
|
};
|
|
|
|
typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
|
|
|
|
#ifdef LIBUNWIND_SUPPORT
|
|
int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
|
|
struct machine *machine,
|
|
struct thread *thread,
|
|
u64 sample_uregs,
|
|
struct perf_sample *data);
|
|
int unwind__arch_reg_id(int regnum);
|
|
#else
|
|
static inline int
|
|
unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
|
|
void *arg __maybe_unused,
|
|
struct machine *machine __maybe_unused,
|
|
struct thread *thread __maybe_unused,
|
|
u64 sample_uregs __maybe_unused,
|
|
struct perf_sample *data __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* LIBUNWIND_SUPPORT */
|
|
#endif /* __UNWIND_H */
|