perf c2c report: Add --show-all option

Normally we limit the main list to contain only entries with HITM %
value > 0.0005, but it might be useful to display all captured entries.
Adding --show-all option for that.

Requested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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-nokgjdwikbegec5jzj4mxhqc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 8 insertions, 2 deletions

diff --git a/tools/perf/Documentation/perf-c2c.txt b/tools/perf/Documentation/perf-c2c.txt
index 33ed4564a8c0..21810d711f5f 100644
--- a/tools/perf/Documentation/perf-c2c.txt
+++ b/tools/perf/Documentation/perf-c2c.txt
@@ -97,6 +97,9 @@ REPORT OPTIONS
 --no-source::
         Do not display Source:Line column.
 
+--show-all::
+        Show all captured HITM lines, with no regard to HITM % 0.0005 limit.
+
 C2C RECORD
 ----------
 The perf c2c record command setup options related to HITM cacheline analysis
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 7eb418d3af04..c6d0dda594d9 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -71,6 +71,7 @@ struct perf_c2c {
         int                      node_info;
 
         bool                     show_src;
+        bool                     show_all;
         bool                     use_stdio;
         bool                     stats_only;
         bool                     symbol_full;
@@ -1773,8 +1774,8 @@ static bool he__display(struct hist_entry *he, struct c2c_stats *stats)
         struct c2c_hist_entry *c2c_he;
         double ld_dist;
 
-        /* XXX Disabled for now, till we get a command line switch to control this */
-        return true;
+        if (c2c.show_all)
+                return true;
 
         c2c_he = container_of(he, struct c2c_hist_entry, he);
 
@@ -2513,6 +2514,8 @@ static int perf_c2c__report(int argc, const char **argv)
                     "Display full length of symbols"),
         OPT_BOOLEAN(0, "no-source", &no_source,
                     "Do not display Source Line column"),
+        OPT_BOOLEAN(0, "show-all", &c2c.show_all,
+                    "Show all captured HITM lines."),
         OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
                              "print_type,threshold[,print_limit],order,sort_key[,branch],value",
                              callchain_help, &parse_callchain_opt,