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authorJiri Olsa <jolsa@kernel.org>2016-02-24 11:46:47 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-02-24 16:20:28 +0300
commit071e9a1e12dceaec6f9d3ffe6e77ee68364166d6 (patch)
treeffb30685af7fb259be96aec0b664d400c7974105 /tools/perf/util/mem-events.c
parent0c877d759d3a62a01d75dc6de4a923a686bb285a (diff)
downloadlinux-071e9a1e12dceaec6f9d3ffe6e77ee68364166d6.tar.xz
perf tools: Introduce perf_mem__lvl_scnprintf function
Move meminfo's lvl display function into mem-events.c object, so it could be reused later from script code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1456303616-26926-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/mem-events.c')
-rw-r--r--tools/perf/util/mem-events.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index 4be3eb74001b..bddb1217d129 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -130,3 +130,56 @@ void perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
if (miss)
strncat(out, " miss", sz - l);
}
+
+static const char * const mem_lvl[] = {
+ "N/A",
+ "HIT",
+ "MISS",
+ "L1",
+ "LFB",
+ "L2",
+ "L3",
+ "Local RAM",
+ "Remote RAM (1 hop)",
+ "Remote RAM (2 hops)",
+ "Remote Cache (1 hop)",
+ "Remote Cache (2 hops)",
+ "I/O",
+ "Uncached",
+};
+
+void perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+{
+ size_t i, l = 0;
+ u64 m = PERF_MEM_LVL_NA;
+ u64 hit, miss;
+
+ if (mem_info)
+ m = mem_info->data_src.mem_lvl;
+
+ sz -= 1; /* -1 for null termination */
+ out[0] = '\0';
+
+ hit = m & PERF_MEM_LVL_HIT;
+ miss = m & PERF_MEM_LVL_MISS;
+
+ /* already taken care of */
+ m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS);
+
+ for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) {
+ if (!(m & 0x1))
+ continue;
+ if (l) {
+ strcat(out, " or ");
+ l += 4;
+ }
+ strncat(out, mem_lvl[i], sz - l);
+ l += strlen(mem_lvl[i]);
+ }
+ if (*out == '\0')
+ strcpy(out, "N/A");
+ if (hit)
+ strncat(out, " hit", sz - l);
+ if (miss)
+ strncat(out, " miss", sz - l);
+}