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perf callchain: Introduce HAVE_DWARF_UNWIND_SUPPORT macro

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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>
This commit is contained in:
Jiri Olsa
2014-01-07 13:47:28 +01:00
committed by Arnaldo Carvalho de Melo
parent ea3da69df9
commit 9ff125d132
5 changed files with 13 additions and 10 deletions
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10
tools/perf/builtin-record.c
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@@ -649,7 +649,7 @@ error:
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 @@ static int get_stack_size(char *str, unsigned long *_size)
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 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
"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 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
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 @@ static struct record record = {
#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";