apfs/linux-apfs
0
0
Fork 0
mirror of https://github.com/linux-apfs/linux-apfs.git synced 2026-05-01 15:00:59 -07:00
Code Issues Packages Projects Releases Wiki Activity

perf tools: Reconstruct hw cache event with modifiers from perf_event_attr

Browse Source 
[root@sandy ~]# perf record -a -e dTLB-load-misses:u usleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.486 MB perf.data (~21216 samples) ]

Before:

  [root@sandy ~]# perf evlist
  dTLB-load-misses
  [root@sandy ~]#

After:

  [root@sandy ~]# perf evlist
  dTLB-load-misses:u
  [root@sandy ~]#

Ditto for other tools.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-7x1b0e6jthkr93lfjzsuakk5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2012-06-11 14:08:07 -03:00
parent 27f18617b0
commit 0b668bc9a7
3 changed files with 134 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/perf/util/evsel.c
+104
View File
@@ -128,6 +128,105 @@ static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size)
return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
}
const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
[PERF_EVSEL__MAX_ALIASES] = {
{ "L1-dcache", "l1-d", "l1d", "L1-data", },
{ "L1-icache", "l1-i", "l1i", "L1-instruction", },
{ "LLC", "L2", },
{ "dTLB", "d-tlb", "Data-TLB", },
{ "iTLB", "i-tlb", "Instruction-TLB", },
{ "branch", "branches", "bpu", "btb", "bpc", },
{ "node", },
};
const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_EVSEL__MAX_ALIASES] = {
{ "load", "loads", "read", },
{ "store", "stores", "write", },
{ "prefetch", "prefetches", "speculative-read", "speculative-load", },
};
const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
[PERF_EVSEL__MAX_ALIASES] = {
{ "refs", "Reference", "ops", "access", },
{ "misses", "miss", },
};
#define C(x) PERF_COUNT_HW_CACHE_##x
#define CACHE_READ (1 << C(OP_READ))
#define CACHE_WRITE (1 << C(OP_WRITE))
#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
#define COP(x) (1 << x)
/*
* cache operartion stat
* L1I : Read and prefetch only
* ITLB and BPU : Read-only
*/
static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = {
[C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
[C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
[C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
[C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
[C(ITLB)] = (CACHE_READ),
[C(BPU)] = (CACHE_READ),
[C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
};
bool perf_evsel__is_cache_op_valid(u8 type, u8 op)
{
if (perf_evsel__hw_cache_stat[type] & COP(op))
return true; /* valid */
else
return false; /* invalid */
}
int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
char *bf, size_t size)
{
if (result) {
return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0],
perf_evsel__hw_cache_op[op][0],
perf_evsel__hw_cache_result[result][0]);
}
return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0],
perf_evsel__hw_cache_op[op][1]);
}
int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size)
{
u8 op, result, type = (config >> 0) & 0xff;
const char *err = "unknown-ext-hardware-cache-type";
if (type > PERF_COUNT_HW_CACHE_MAX)
goto out_err;
op = (config >> 8) & 0xff;
err = "unknown-ext-hardware-cache-op";
if (op > PERF_COUNT_HW_CACHE_OP_MAX)
goto out_err;
result = (config >> 16) & 0xff;
err = "unknown-ext-hardware-cache-result";
if (result > PERF_COUNT_HW_CACHE_RESULT_MAX)
goto out_err;
err = "invalid-cache";
if (!perf_evsel__is_cache_op_valid(type, op))
goto out_err;
return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size);
out_err:
return scnprintf(bf, size, "%s", err);
}
static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size)
{
int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size);
return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret);
}
int perf_evsel__name(struct perf_evsel *evsel, char *bf, size_t size)
{
int ret;
@@ -140,6 +239,11 @@ int perf_evsel__name(struct perf_evsel *evsel, char *bf, size_t size)
case PERF_TYPE_HARDWARE:
ret = perf_evsel__hw_name(evsel, bf, size);
break;
case PERF_TYPE_HW_CACHE:
ret = perf_evsel__hw_cache_name(evsel, bf, size);
break;
default:
/*
* FIXME