Adding cacheline offset dimension key support.
It displays cacheline offset as hex number.

Link: http://lkml.kernel.org/n/tip-m0424ye98lqveg5nopto8...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/builtin-c2c.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 335c0fd30757..7c52481ec36b 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -300,6 +300,32 @@ static int dcacheline_entry(struct perf_hpp_fmt *fmt, 
struct perf_hpp *hpp,
        return snprintf(hpp->buf, hpp->size, "%*s", width, hex_str(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);
+
+       if (he->mem_info)
+               addr = cl_offset(he->mem_info->daddr.al_addr);
+
+       return snprintf(hpp->buf, hpp->size, "%*s", width, hex_str(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] = {            \
@@ -343,8 +369,17 @@ 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

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