linux-kernel - [PATCH 1/8] perf tools: Omit DWARF judgement when recording dwarf callchain

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Message-ID: <1462525154-125656-2-git-send-email-hekuang@huawei.com>
Date:	Fri, 6 May 2016 08:59:07 +0000
From:	He Kuang <hekuang@...wei.com>
To:	<peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
	<alexander.shishkin@...ux.intel.com>, <jolsa@...hat.com>,
	<wangnan0@...wei.com>, <hekuang@...wei.com>, <jpoimboe@...hat.com>,
	<ak@...ux.intel.com>, <eranian@...gle.com>, <namhyung@...nel.org>,
	<adrian.hunter@...el.com>, <sukadev@...ux.vnet.ibm.com>,
	<masami.hiramatsu.pt@...achi.com>, <tumanova@...ux.vnet.ibm.com>,
	<kan.liang@...el.com>, <penberg@...nel.org>, <dsahern@...il.com>
CC:	<linux-kernel@...r.kernel.org>
Subject: [PATCH 1/8] perf tools: Omit DWARF judgement when recording dwarf callchain

There's no need for dwarf support when perf recording with callchain.

Signed-off-by: He Kuang <hekuang@...wei.com>
---
 tools/perf/util/util.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index b7766c5..e5ebfd4 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -471,7 +471,6 @@ int parse_callchain_record(const char *arg, struct callchain_param *param)
 				       "needed for --call-graph fp\n");
 			break;
 
-#ifdef HAVE_DWARF_UNWIND_SUPPORT
 		/* Dwarf style */
 		} else if (!strncmp(name, "dwarf", sizeof("dwarf"))) {
 			const unsigned long default_stack_dump_size = 8192;
@@ -487,7 +486,6 @@ int parse_callchain_record(const char *arg, struct callchain_param *param)
 				ret = get_stack_size(tok, &size);
 				param->dump_size = size;
 			}
-#endif /* HAVE_DWARF_UNWIND_SUPPORT */
 		} else if (!strncmp(name, "lbr", sizeof("lbr"))) {
 			if (!strtok_r(NULL, ",", &saveptr)) {
 				param->record_mode = CALLCHAIN_LBR;
-- 
1.8.5.2