perf callchain: Introduce HAVE_DWARF_UNWIND_SUPPORT macro
Introducing global macro HAVE_DWARF_UNWIND_SUPPORT to indicate we have
dwarf unwind support. Any library providing the dwarf post unwind
support will enable this macro.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Jean Pihet <jean.pihet@linaro.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1389098853-14466-12-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 7b8f0e6..eb524f9 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -649,7 +649,7 @@
return ret;
}
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
static int get_stack_size(char *str, unsigned long *_size)
{
char *endptr;
@@ -675,7 +675,7 @@
max_size, str);
return -1;
}
-#endif /* HAVE_LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
int record_parse_callchain(const char *arg, struct record_opts *opts)
{
@@ -704,7 +704,7 @@
"needed for -g fp\n");
break;
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
/* Dwarf style */
} else if (!strncmp(name, "dwarf", sizeof("dwarf"))) {
const unsigned long default_stack_dump_size = 8192;
@@ -720,7 +720,7 @@
ret = get_stack_size(tok, &size);
opts->stack_dump_size = size;
}
-#endif /* HAVE_LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
} else {
pr_err("callchain: Unknown --call-graph option "
"value: %s\n", arg);
@@ -823,7 +823,7 @@
#define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: "
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf";
#else
const char record_callchain_help[] = CALLCHAIN_HELP "fp";