perf c2c report: Add 'offset' dimension key

It displays cacheline offset as hex number.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-m0424ye98lqveg5nopto8qww@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 3a3e67f6e7729ce0e5986284c5bb598d34e523da..01d541fd70222ad5671bb98a63f42b3c0777953d 100644 (file)
--- 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,
 };