453 lines
9.2 KiB
C
453 lines
9.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <api/fs/fs.h>
|
|
#include <linux/kernel.h>
|
|
#include "mem-events.h"
|
|
#include "debug.h"
|
|
#include "symbol.h"
|
|
#include "sort.h"
|
|
|
|
unsigned int perf_mem_events__loads_ldlat = 30;
|
|
|
|
#define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
|
|
|
|
struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
|
|
E("ldlat-loads", "cpu/mem-loads,ldlat=%u/P", "mem-loads"),
|
|
E("ldlat-stores", "cpu/mem-stores/P", "mem-stores"),
|
|
};
|
|
#undef E
|
|
|
|
#undef E
|
|
|
|
static char mem_loads_name[100];
|
|
static bool mem_loads_name__init;
|
|
|
|
char *perf_mem_events__name(int i)
|
|
{
|
|
if (i == PERF_MEM_EVENTS__LOAD) {
|
|
if (!mem_loads_name__init) {
|
|
mem_loads_name__init = true;
|
|
scnprintf(mem_loads_name, sizeof(mem_loads_name),
|
|
perf_mem_events[i].name,
|
|
perf_mem_events__loads_ldlat);
|
|
}
|
|
return mem_loads_name;
|
|
}
|
|
|
|
return (char *)perf_mem_events[i].name;
|
|
}
|
|
|
|
int perf_mem_events__parse(const char *str)
|
|
{
|
|
char *tok, *saveptr = NULL;
|
|
bool found = false;
|
|
char *buf;
|
|
int j;
|
|
|
|
/* We need buffer that we know we can write to. */
|
|
buf = malloc(strlen(str) + 1);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
strcpy(buf, str);
|
|
|
|
tok = strtok_r((char *)buf, ",", &saveptr);
|
|
|
|
while (tok) {
|
|
for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
|
|
struct perf_mem_event *e = &perf_mem_events[j];
|
|
|
|
if (strstr(e->tag, tok))
|
|
e->record = found = true;
|
|
}
|
|
|
|
tok = strtok_r(NULL, ",", &saveptr);
|
|
}
|
|
|
|
free(buf);
|
|
|
|
if (found)
|
|
return 0;
|
|
|
|
pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str);
|
|
return -1;
|
|
}
|
|
|
|
int perf_mem_events__init(void)
|
|
{
|
|
const char *mnt = sysfs__mount();
|
|
bool found = false;
|
|
int j;
|
|
|
|
if (!mnt)
|
|
return -ENOENT;
|
|
|
|
for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
|
|
char path[PATH_MAX];
|
|
struct perf_mem_event *e = &perf_mem_events[j];
|
|
struct stat st;
|
|
|
|
scnprintf(path, PATH_MAX, "%s/devices/cpu/events/%s",
|
|
mnt, e->sysfs_name);
|
|
|
|
if (!stat(path, &st))
|
|
e->supported = found = true;
|
|
}
|
|
|
|
return found ? 0 : -ENOENT;
|
|
}
|
|
|
|
static const char * const tlb_access[] = {
|
|
"N/A",
|
|
"HIT",
|
|
"MISS",
|
|
"L1",
|
|
"L2",
|
|
"Walker",
|
|
"Fault",
|
|
};
|
|
|
|
int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
|
|
{
|
|
size_t l = 0, i;
|
|
u64 m = PERF_MEM_TLB_NA;
|
|
u64 hit, miss;
|
|
|
|
sz -= 1; /* -1 for null termination */
|
|
out[0] = '\0';
|
|
|
|
if (mem_info)
|
|
m = mem_info->data_src.mem_dtlb;
|
|
|
|
hit = m & PERF_MEM_TLB_HIT;
|
|
miss = m & PERF_MEM_TLB_MISS;
|
|
|
|
/* already taken care of */
|
|
m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS);
|
|
|
|
for (i = 0; m && i < ARRAY_SIZE(tlb_access); i++, m >>= 1) {
|
|
if (!(m & 0x1))
|
|
continue;
|
|
if (l) {
|
|
strcat(out, " or ");
|
|
l += 4;
|
|
}
|
|
l += scnprintf(out + l, sz - l, tlb_access[i]);
|
|
}
|
|
if (*out == '\0')
|
|
l += scnprintf(out, sz - l, "N/A");
|
|
if (hit)
|
|
l += scnprintf(out + l, sz - l, " hit");
|
|
if (miss)
|
|
l += scnprintf(out + l, sz - l, " miss");
|
|
|
|
return 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",
|
|
};
|
|
|
|
static const char * const mem_lvlnum[] = {
|
|
[PERF_MEM_LVLNUM_ANY_CACHE] = "Any cache",
|
|
[PERF_MEM_LVLNUM_LFB] = "LFB",
|
|
[PERF_MEM_LVLNUM_RAM] = "RAM",
|
|
[PERF_MEM_LVLNUM_PMEM] = "PMEM",
|
|
[PERF_MEM_LVLNUM_NA] = "N/A",
|
|
};
|
|
|
|
int 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;
|
|
int printed;
|
|
|
|
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);
|
|
|
|
|
|
if (mem_info && mem_info->data_src.mem_remote) {
|
|
strcat(out, "Remote ");
|
|
l += 7;
|
|
}
|
|
|
|
printed = 0;
|
|
for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) {
|
|
if (!(m & 0x1))
|
|
continue;
|
|
if (printed++) {
|
|
strcat(out, " or ");
|
|
l += 4;
|
|
}
|
|
l += scnprintf(out + l, sz - l, mem_lvl[i]);
|
|
}
|
|
|
|
if (mem_info && mem_info->data_src.mem_lvl_num) {
|
|
int lvl = mem_info->data_src.mem_lvl_num;
|
|
if (printed++) {
|
|
strcat(out, " or ");
|
|
l += 4;
|
|
}
|
|
if (mem_lvlnum[lvl])
|
|
l += scnprintf(out + l, sz - l, mem_lvlnum[lvl]);
|
|
else
|
|
l += scnprintf(out + l, sz - l, "L%d", lvl);
|
|
}
|
|
|
|
if (l == 0)
|
|
l += scnprintf(out + l, sz - l, "N/A");
|
|
if (hit)
|
|
l += scnprintf(out + l, sz - l, " hit");
|
|
if (miss)
|
|
l += scnprintf(out + l, sz - l, " miss");
|
|
|
|
return l;
|
|
}
|
|
|
|
static const char * const snoop_access[] = {
|
|
"N/A",
|
|
"None",
|
|
"Hit",
|
|
"Miss",
|
|
"HitM",
|
|
};
|
|
|
|
int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
|
|
{
|
|
size_t i, l = 0;
|
|
u64 m = PERF_MEM_SNOOP_NA;
|
|
|
|
sz -= 1; /* -1 for null termination */
|
|
out[0] = '\0';
|
|
|
|
if (mem_info)
|
|
m = mem_info->data_src.mem_snoop;
|
|
|
|
for (i = 0; m && i < ARRAY_SIZE(snoop_access); i++, m >>= 1) {
|
|
if (!(m & 0x1))
|
|
continue;
|
|
if (l) {
|
|
strcat(out, " or ");
|
|
l += 4;
|
|
}
|
|
l += scnprintf(out + l, sz - l, snoop_access[i]);
|
|
}
|
|
if (mem_info &&
|
|
(mem_info->data_src.mem_snoopx & PERF_MEM_SNOOPX_FWD)) {
|
|
if (l) {
|
|
strcat(out, " or ");
|
|
l += 4;
|
|
}
|
|
l += scnprintf(out + l, sz - l, "Fwd");
|
|
}
|
|
|
|
if (*out == '\0')
|
|
l += scnprintf(out, sz - l, "N/A");
|
|
|
|
return l;
|
|
}
|
|
|
|
int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
|
|
{
|
|
u64 mask = PERF_MEM_LOCK_NA;
|
|
int l;
|
|
|
|
if (mem_info)
|
|
mask = mem_info->data_src.mem_lock;
|
|
|
|
if (mask & PERF_MEM_LOCK_NA)
|
|
l = scnprintf(out, sz, "N/A");
|
|
else if (mask & PERF_MEM_LOCK_LOCKED)
|
|
l = scnprintf(out, sz, "Yes");
|
|
else
|
|
l = scnprintf(out, sz, "No");
|
|
|
|
return l;
|
|
}
|
|
|
|
int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
|
|
{
|
|
int i = 0;
|
|
|
|
i += perf_mem__lvl_scnprintf(out, sz, mem_info);
|
|
i += scnprintf(out + i, sz - i, "|SNP ");
|
|
i += perf_mem__snp_scnprintf(out + i, sz - i, mem_info);
|
|
i += scnprintf(out + i, sz - i, "|TLB ");
|
|
i += perf_mem__tlb_scnprintf(out + i, sz - i, mem_info);
|
|
i += scnprintf(out + i, sz - i, "|LCK ");
|
|
i += perf_mem__lck_scnprintf(out + i, sz - i, mem_info);
|
|
|
|
return i;
|
|
}
|
|
|
|
int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi)
|
|
{
|
|
union perf_mem_data_src *data_src = &mi->data_src;
|
|
u64 daddr = mi->daddr.addr;
|
|
u64 op = data_src->mem_op;
|
|
u64 lvl = data_src->mem_lvl;
|
|
u64 snoop = data_src->mem_snoop;
|
|
u64 lock = data_src->mem_lock;
|
|
/*
|
|
* Skylake might report unknown remote level via this
|
|
* bit, consider it when evaluating remote HITMs.
|
|
*/
|
|
bool mrem = data_src->mem_remote;
|
|
int err = 0;
|
|
|
|
#define HITM_INC(__f) \
|
|
do { \
|
|
stats->__f++; \
|
|
stats->tot_hitm++; \
|
|
} while (0)
|
|
|
|
#define P(a, b) PERF_MEM_##a##_##b
|
|
|
|
stats->nr_entries++;
|
|
|
|
if (lock & P(LOCK, LOCKED)) stats->locks++;
|
|
|
|
if (op & P(OP, LOAD)) {
|
|
/* load */
|
|
stats->load++;
|
|
|
|
if (!daddr) {
|
|
stats->ld_noadrs++;
|
|
return -1;
|
|
}
|
|
|
|
if (lvl & P(LVL, HIT)) {
|
|
if (lvl & P(LVL, UNC)) stats->ld_uncache++;
|
|
if (lvl & P(LVL, IO)) stats->ld_io++;
|
|
if (lvl & P(LVL, LFB)) stats->ld_fbhit++;
|
|
if (lvl & P(LVL, L1 )) stats->ld_l1hit++;
|
|
if (lvl & P(LVL, L2 )) stats->ld_l2hit++;
|
|
if (lvl & P(LVL, L3 )) {
|
|
if (snoop & P(SNOOP, HITM))
|
|
HITM_INC(lcl_hitm);
|
|
else
|
|
stats->ld_llchit++;
|
|
}
|
|
|
|
if (lvl & P(LVL, LOC_RAM)) {
|
|
stats->lcl_dram++;
|
|
if (snoop & P(SNOOP, HIT))
|
|
stats->ld_shared++;
|
|
else
|
|
stats->ld_excl++;
|
|
}
|
|
|
|
if ((lvl & P(LVL, REM_RAM1)) ||
|
|
(lvl & P(LVL, REM_RAM2)) ||
|
|
mrem) {
|
|
stats->rmt_dram++;
|
|
if (snoop & P(SNOOP, HIT))
|
|
stats->ld_shared++;
|
|
else
|
|
stats->ld_excl++;
|
|
}
|
|
}
|
|
|
|
if ((lvl & P(LVL, REM_CCE1)) ||
|
|
(lvl & P(LVL, REM_CCE2)) ||
|
|
mrem) {
|
|
if (snoop & P(SNOOP, HIT))
|
|
stats->rmt_hit++;
|
|
else if (snoop & P(SNOOP, HITM))
|
|
HITM_INC(rmt_hitm);
|
|
}
|
|
|
|
if ((lvl & P(LVL, MISS)))
|
|
stats->ld_miss++;
|
|
|
|
} else if (op & P(OP, STORE)) {
|
|
/* store */
|
|
stats->store++;
|
|
|
|
if (!daddr) {
|
|
stats->st_noadrs++;
|
|
return -1;
|
|
}
|
|
|
|
if (lvl & P(LVL, HIT)) {
|
|
if (lvl & P(LVL, UNC)) stats->st_uncache++;
|
|
if (lvl & P(LVL, L1 )) stats->st_l1hit++;
|
|
}
|
|
if (lvl & P(LVL, MISS))
|
|
if (lvl & P(LVL, L1)) stats->st_l1miss++;
|
|
} else {
|
|
/* unparsable data_src? */
|
|
stats->noparse++;
|
|
return -1;
|
|
}
|
|
|
|
if (!mi->daddr.map || !mi->iaddr.map) {
|
|
stats->nomap++;
|
|
return -1;
|
|
}
|
|
|
|
#undef P
|
|
#undef HITM_INC
|
|
return err;
|
|
}
|
|
|
|
void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add)
|
|
{
|
|
stats->nr_entries += add->nr_entries;
|
|
|
|
stats->locks += add->locks;
|
|
stats->store += add->store;
|
|
stats->st_uncache += add->st_uncache;
|
|
stats->st_noadrs += add->st_noadrs;
|
|
stats->st_l1hit += add->st_l1hit;
|
|
stats->st_l1miss += add->st_l1miss;
|
|
stats->load += add->load;
|
|
stats->ld_excl += add->ld_excl;
|
|
stats->ld_shared += add->ld_shared;
|
|
stats->ld_uncache += add->ld_uncache;
|
|
stats->ld_io += add->ld_io;
|
|
stats->ld_miss += add->ld_miss;
|
|
stats->ld_noadrs += add->ld_noadrs;
|
|
stats->ld_fbhit += add->ld_fbhit;
|
|
stats->ld_l1hit += add->ld_l1hit;
|
|
stats->ld_l2hit += add->ld_l2hit;
|
|
stats->ld_llchit += add->ld_llchit;
|
|
stats->lcl_hitm += add->lcl_hitm;
|
|
stats->rmt_hitm += add->rmt_hitm;
|
|
stats->tot_hitm += add->tot_hitm;
|
|
stats->rmt_hit += add->rmt_hit;
|
|
stats->lcl_dram += add->lcl_dram;
|
|
stats->rmt_dram += add->rmt_dram;
|
|
stats->nomap += add->nomap;
|
|
stats->noparse += add->noparse;
|
|
}
|