linux-kernel - [PATCH -tip 2/4] perf script: print DSOs and symbols for BTS branch

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20110628074037.4269.7659.stgit@linux3>
Date:	Tue, 28 Jun 2011 16:40:37 +0900
From:	Akihiro Nagai <akihiro.nagai.hw@...achi.com>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	David Ahern <dsahern@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	pp-manager@....hitachi.co.jp,
	Akihiro Nagai <akihiro.nagai.hw@...achi.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	David Ahern <dsahern@...il.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: [PATCH -tip 2/4] perf script: print DSOs and symbols for BTS
 branch_from addr

Print DSOs and symbols for branch_from address of BTS.
BTS records branch_from address in 'addr' fields,
and branch_to address in 'ip' field. Latest perf-script
resolves DSOs and symbols only for 'ip' field.
This patch resolves them for 'addr' field too.

# perf script -f ip,addr,dso,sym
  3f03e016b0                  ([kernel.kallsyms]) ffffffff81467612 irq_return ([kernel.kallsyms])
  3f03e016b0           _start (/lib64/ld-2.14.so) ffffffff81467612 irq_return ([kernel.kallsyms])
  3f03e04b80        _dl_start (/lib64/ld-2.14.so)       3f03e016b3 _start (/lib64/ld-2.14.so)
  3f03e04b80        _dl_start (/lib64/ld-2.14.so) ffffffff81467612 irq_return ([kernel.kallsyms])
  3f03e04ba6        _dl_start (/lib64/ld-2.14.so) ffffffff81467612 irq_return ([kernel.kallsyms])

Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@...achi.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Arnaldo Carvalho de Melo <acme@...radead.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
---

 tools/perf/builtin-script.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index e45433f..2d68086 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -306,6 +306,12 @@ static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
 	     (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
 		return true;
 
+	/* BTS Events */
+	if ((attr->type == PERF_TYPE_HARDWARE) &&
+	    (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
+	    (attr->sample_period == 1))
+		return true;
+
 	return false;
 }
 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/