perf tools: Introduce new sort type "socket" for the processor socket

This patch enable perf report to sort by processor socket:

  $ perf report --stdio --sort socket,comm,dso,symbol
  # To display the perf.data header info, please use --header/--header-only options.
  #
  # Total Lost Samples: 0
  #
  # Samples: 686  of event 'cycles'
  # Event count (approx.): 349215462
  #
  # Overhead SOCKET Command Shared Object    Symbol
  # ........ ...... ....... ................ ............................
  #
    97.05%    000   test    test             [.] plusB_c
     0.98%    000   test    test             [.] plusA_c
     0.93%    001   perf    [kernel.vmlinux] [k] smp_call_function_single
     0.19%    001   perf    [kernel.vmlinux] [k] page_fault
     0.19%    001   swapper [kernel.vmlinux] [k] pm_qos_request
     0.16%    000   test    [kernel.vmlinux] [k] add_mm_counter_fast

Signed-off-by: Kan Liang <kan.liang@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1441377946-44429-2-git-send-email-kan.liang@intel.com
[ Fix col calc, un-allcapsify col header & read the topology when not using perf.data ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index a97bceeac0e7..6b9556d298c9 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -21,6 +21,7 @@ int		sort__need_collapse = 0;
 int		sort__has_parent = 0;
 int		sort__has_sym = 0;
 int		sort__has_dso = 0;
+int		sort__has_socket = 0;
 enum sort_mode	sort__mode = SORT_MODE__NORMAL;
 
 
@@ -421,6 +422,27 @@ struct sort_entry sort_cpu = {
 	.se_width_idx	= HISTC_CPU,
 };
 
+/* --sort socket */
+
+static int64_t
+sort__socket_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+	return right->socket - left->socket;
+}
+
+static int hist_entry__socket_snprintf(struct hist_entry *he, char *bf,
+				    size_t size, unsigned int width)
+{
+	return repsep_snprintf(bf, size, "%*.*d", width, width-3, he->socket);
+}
+
+struct sort_entry sort_socket = {
+	.se_header      = "Socket",
+	.se_cmp	        = sort__socket_cmp,
+	.se_snprintf    = hist_entry__socket_snprintf,
+	.se_width_idx	= HISTC_SOCKET,
+};
+
 /* sort keys for branch stacks */
 
 static int64_t
@@ -1248,6 +1270,7 @@ static struct sort_dimension common_sort_dimensions[] = {
 	DIM(SORT_SYM, "symbol", sort_sym),
 	DIM(SORT_PARENT, "parent", sort_parent),
 	DIM(SORT_CPU, "cpu", sort_cpu),
+	DIM(SORT_SOCKET, "socket", sort_socket),
 	DIM(SORT_SRCLINE, "srcline", sort_srcline),
 	DIM(SORT_SRCFILE, "srcfile", sort_srcfile),
 	DIM(SORT_LOCAL_WEIGHT, "local_weight", sort_local_weight),
@@ -1550,6 +1573,8 @@ int sort_dimension__add(const char *tok)
 
 		} else if (sd->entry == &sort_dso) {
 			sort__has_dso = 1;
+		} else if (sd->entry == &sort_socket) {
+			sort__has_socket = 1;
 		}
 
 		return __sort_dimension__add(sd);