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perf tools: Introduce perf_mem__lvl_scnprintf function

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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>
This commit is contained in:
Jiri Olsa
2016-02-24 09:46:47 +01:00
committed by Arnaldo Carvalho de Melo
parent 0c877d759d
commit 071e9a1e12
3 changed files with 55 additions and 49 deletions
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53
tools/perf/util/mem-events.c
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@@ -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);
}