linux-perf-users.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Alexandre Truong <alexandre.truong@arm.com>
To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
Cc: Alexandre Truong <alexandre.truong@arm.com>
Subject: [PATCH v2 3/4] perf tools: enable dwarf_callchain_users on aarch64
Date: Wed, 10 Feb 2021 13:22:12 +0000	[thread overview]
Message-ID: <20210210132213.8146-3-alexandre.truong@arm.com> (raw)
In-Reply-To: <20210210132213.8146-1-alexandre.truong@arm.com>

On arm64, enable dwarf_callchain_users which will be needed
to do a dwarf unwind in order to get the caller of the leaf frame.

Signed-off-by: Alexandre Truong <alexandre.truong@arm.com>
---
 tools/perf/builtin-report.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2a845d6cac09..93661a3eaeb1 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -405,6 +405,10 @@ static int report__setup_sample_type(struct report *rep)
 
 	callchain_param_setup(sample_type);
 
+	if (callchain_param.record_mode == CALLCHAIN_FP &&
+			strncmp(rep->session->header.env.arch, "aarch64", 7) == 0)
+		dwarf_callchain_users = true;
+
 	if (rep->stitch_lbr && (callchain_param.record_mode != CALLCHAIN_LBR)) {
 		ui__warning("Can't find LBR callchain. Switch off --stitch-lbr.\n"
 			    "Please apply --call-graph lbr when recording.\n");
-- 
2.23.0


  parent reply	other threads:[~2021-02-10 13:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-10 13:22 [PATCH v2 1/4] perf tools: record aarch64 registers automatically Alexandre Truong
2021-02-10 13:22 ` [PATCH v2 2/4] perf tools: add a mechanism to inject stack frames Alexandre Truong
2021-02-10 13:22 ` Alexandre Truong [this message]
2021-02-10 13:22 ` [PATCH v2 4/4] perf tools: determine if LR is the return address Alexandre Truong
2021-02-12 17:03 [PATCH v2 1/4] perf tools: record aarch64 registers automatically Alexandre Truong
2021-02-12 17:03 ` [PATCH v2 3/4] perf tools: enable dwarf_callchain_users on aarch64 Alexandre Truong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210210132213.8146-3-alexandre.truong@arm.com \
    --to=alexandre.truong@arm.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-perf-users@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).