linux-kernel - [PATCH 20/68] perf c2c report: Add 'offset' dimension key

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Message-Id: <1476207123-21791-21-git-send-email-acme@kernel.org>
Date:   Tue, 11 Oct 2016 14:31:15 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Linux Weekly News <lwn@....net>,
        Jiri Olsa <jolsa@...nel.org>, Andi Kleen <andi@...stfloor.org>,
        David Ahern <dsahern@...il.com>,
        Don Zickus <dzickus@...hat.com>, Joe Mario <jmario@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 20/68] perf c2c report: Add 'offset' dimension key

From: Jiri Olsa <jolsa@...nel.org>

It displays cacheline offset as hex number.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Don Zickus <dzickus@...hat.com>
Cc: Joe Mario <jmario@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/n/tip-m0424ye98lqveg5nopto8qww@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-c2c.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 3a3e67f6e772..01d541fd7022 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -301,6 +301,33 @@ static int dcacheline_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 	return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
 }
 
+static int offset_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+			struct hist_entry *he)
+{
+	uint64_t addr = 0;
+	int width = c2c_width(fmt, hpp, he->hists);
+	char buf[20];
+
+	if (he->mem_info)
+		addr = cl_offset(he->mem_info->daddr.al_addr);
+
+	return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
+}
+
+static int64_t
+offset_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
+	   struct hist_entry *left, struct hist_entry *right)
+{
+	uint64_t l = 0, r = 0;
+
+	if (left->mem_info)
+		l = cl_offset(left->mem_info->daddr.addr);
+	if (right->mem_info)
+		r = cl_offset(right->mem_info->daddr.addr);
+
+	return (int64_t)(r - l);
+}
+
 #define HEADER_LOW(__h)			\
 	{				\
 		.line[1] = {		\
@@ -344,8 +371,17 @@ static struct c2c_dimension dim_dcacheline = {
 	.width		= 18,
 };
 
+static struct c2c_dimension dim_offset = {
+	.header		= HEADER_BOTH("Data address", "Offset"),
+	.name		= "offset",
+	.cmp		= offset_cmp,
+	.entry		= offset_entry,
+	.width		= 18,
+};
+
 static struct c2c_dimension *dimensions[] = {
 	&dim_dcacheline,
+	&dim_offset,
 	NULL,
 };
 
-- 
2.7.4