#include <linux/time64.h>
#include "asm/bug.h"
#include "util/mem-events.h"
+#include "util/dump-insn.h"
static char const *script_name;
static char const *generate_script_lang;
static const char *cpu_list;
static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
static struct perf_stat_config stat_config;
+static int max_blocks;
unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
PERF_OUTPUT_CALLINDENT = 1U << 20,
PERF_OUTPUT_INSN = 1U << 21,
PERF_OUTPUT_INSNLEN = 1U << 22,
+ PERF_OUTPUT_BRSTACKINSN = 1U << 23,
};
struct output_option {
{.str = "callindent", .field = PERF_OUTPUT_CALLINDENT},
{.str = "insn", .field = PERF_OUTPUT_INSN},
{.str = "insnlen", .field = PERF_OUTPUT_INSNLEN},
+ {.str = "brstackinsn", .field = PERF_OUTPUT_BRSTACKINSN},
};
/* default set to maintain compatibility with current format */
"selected. Hence, no address to lookup the source line number.\n");
return -EINVAL;
}
-
+ if (PRINT_FIELD(BRSTACKINSN) &&
+ !(perf_evlist__combined_branch_type(session->evlist) &
+ PERF_SAMPLE_BRANCH_ANY)) {
+ pr_err("Display of branch stack assembler requested, but non all-branch filter set\n"
+ "Hint: run 'perf record -b ...'\n");
+ return -EINVAL;
+ }
if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
PERF_OUTPUT_TID|PERF_OUTPUT_PID))
}
}
+#define MAXBB 16384UL
+
+static int grab_bb(u8 *buffer, u64 start, u64 end,
+ struct machine *machine, struct thread *thread,
+ bool *is64bit, u8 *cpumode, bool last)
+{
+ long offset, len;
+ struct addr_location al;
+ bool kernel;
+
+ if (!start || !end)
+ return 0;
+
+ kernel = machine__kernel_ip(machine, start);
+ if (kernel)
+ *cpumode = PERF_RECORD_MISC_KERNEL;
+ else
+ *cpumode = PERF_RECORD_MISC_USER;
+
+ /*
+ * Block overlaps between kernel and user.
+ * This can happen due to ring filtering
+ * On Intel CPUs the entry into the kernel is filtered,
+ * but the exit is not. Let the caller patch it up.
+ */
+ if (kernel != machine__kernel_ip(machine, end)) {
+ printf("\tblock %" PRIx64 "-%" PRIx64 " transfers between kernel and user\n",
+ start, end);
+ return -ENXIO;
+ }
+
+ memset(&al, 0, sizeof(al));
+ if (end - start > MAXBB - MAXINSN) {
+ if (last)
+ printf("\tbrstack does not reach to final jump (%" PRIx64 "-%" PRIx64 ")\n", start, end);
+ else
+ printf("\tblock %" PRIx64 "-%" PRIx64 " (%" PRIu64 ") too long to dump\n", start, end, end - start);
+ return 0;
+ }
+
+ thread__find_addr_map(thread, *cpumode, MAP__FUNCTION, start, &al);
+ if (!al.map || !al.map->dso) {
+ printf("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end);
+ return 0;
+ }
+ if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR) {
+ printf("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end);
+ return 0;
+ }
+
+ /* Load maps to ensure dso->is_64_bit has been updated */
+ map__load(al.map);
+
+ offset = al.map->map_ip(al.map, start);
+ len = dso__data_read_offset(al.map->dso, machine, offset, (u8 *)buffer,
+ end - start + MAXINSN);
+
+ *is64bit = al.map->dso->is_64_bit;
+ if (len <= 0)
+ printf("\tcannot fetch code for block at %" PRIx64 "-%" PRIx64 "\n",
+ start, end);
+ return len;
+}
+
+static void print_jump(uint64_t ip, struct branch_entry *en,
+ struct perf_insn *x, u8 *inbuf, int len,
+ int insn)
+{
+ printf("\t%016" PRIx64 "\t%-30s\t#%s%s%s%s",
+ ip,
+ dump_insn(x, ip, inbuf, len, NULL),
+ en->flags.predicted ? " PRED" : "",
+ en->flags.mispred ? " MISPRED" : "",
+ en->flags.in_tx ? " INTX" : "",
+ en->flags.abort ? " ABORT" : "");
+ if (en->flags.cycles) {
+ printf(" %d cycles", en->flags.cycles);
+ if (insn)
+ printf(" %.2f IPC", (float)insn / en->flags.cycles);
+ }
+ putchar('\n');
+}
+
+static void print_ip_sym(struct thread *thread, u8 cpumode, int cpu,
+ uint64_t addr, struct symbol **lastsym,
+ struct perf_event_attr *attr)
+{
+ struct addr_location al;
+ int off;
+
+ memset(&al, 0, sizeof(al));
+
+ thread__find_addr_map(thread, cpumode, MAP__FUNCTION, addr, &al);
+ if (!al.map)
+ thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
+ addr, &al);
+ if ((*lastsym) && al.addr >= (*lastsym)->start && al.addr < (*lastsym)->end)
+ return;
+
+ al.cpu = cpu;
+ al.sym = NULL;
+ if (al.map)
+ al.sym = map__find_symbol(al.map, al.addr);
+
+ if (!al.sym)
+ return;
+
+ if (al.addr < al.sym->end)
+ off = al.addr - al.sym->start;
+ else
+ off = al.addr - al.map->start - al.sym->start;
+ printf("\t%s", al.sym->name);
+ if (off)
+ printf("%+d", off);
+ putchar(':');
+ if (PRINT_FIELD(SRCLINE))
+ map__fprintf_srcline(al.map, al.addr, "\t", stdout);
+ putchar('\n');
+ *lastsym = al.sym;
+}
+
+static void print_sample_brstackinsn(struct perf_sample *sample,
+ struct thread *thread,
+ struct perf_event_attr *attr,
+ struct machine *machine)
+{
+ struct branch_stack *br = sample->branch_stack;
+ u64 start, end;
+ int i, insn, len, nr, ilen;
+ struct perf_insn x;
+ u8 buffer[MAXBB];
+ unsigned off;
+ struct symbol *lastsym = NULL;
+
+ if (!(br && br->nr))
+ return;
+ nr = br->nr;
+ if (max_blocks && nr > max_blocks + 1)
+ nr = max_blocks + 1;
+
+ x.thread = thread;
+ x.cpu = sample->cpu;
+
+ putchar('\n');
+
+ /* Handle first from jump, of which we don't know the entry. */
+ len = grab_bb(buffer, br->entries[nr-1].from,
+ br->entries[nr-1].from,
+ machine, thread, &x.is64bit, &x.cpumode, false);
+ if (len > 0) {
+ print_ip_sym(thread, x.cpumode, x.cpu,
+ br->entries[nr - 1].from, &lastsym, attr);
+ print_jump(br->entries[nr - 1].from, &br->entries[nr - 1],
+ &x, buffer, len, 0);
+ }
+
+ /* Print all blocks */
+ for (i = nr - 2; i >= 0; i--) {
+ if (br->entries[i].from || br->entries[i].to)
+ pr_debug("%d: %" PRIx64 "-%" PRIx64 "\n", i,
+ br->entries[i].from,
+ br->entries[i].to);
+ start = br->entries[i + 1].to;
+ end = br->entries[i].from;
+
+ len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, false);
+ /* Patch up missing kernel transfers due to ring filters */
+ if (len == -ENXIO && i > 0) {
+ end = br->entries[--i].from;
+ pr_debug("\tpatching up to %" PRIx64 "-%" PRIx64 "\n", start, end);
+ len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, false);
+ }
+ if (len <= 0)
+ continue;
+
+ insn = 0;
+ for (off = 0;; off += ilen) {
+ uint64_t ip = start + off;
+
+ print_ip_sym(thread, x.cpumode, x.cpu, ip, &lastsym, attr);
+ if (ip == end) {
+ print_jump(ip, &br->entries[i], &x, buffer + off, len - off, insn);
+ break;
+ } else {
+ printf("\t%016" PRIx64 "\t%s\n", ip,
+ dump_insn(&x, ip, buffer + off, len - off, &ilen));
+ if (ilen == 0)
+ break;
+ insn++;
+ }
+ }
+ }
+
+ /*
+ * Hit the branch? In this case we are already done, and the target
+ * has not been executed yet.
+ */
+ if (br->entries[0].from == sample->ip)
+ return;
+ if (br->entries[0].flags.abort)
+ return;
+
+ /*
+ * Print final block upto sample
+ */
+ start = br->entries[0].to;
+ end = sample->ip;
+ len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, true);
+ print_ip_sym(thread, x.cpumode, x.cpu, start, &lastsym, attr);
+ if (len <= 0) {
+ /* Print at least last IP if basic block did not work */
+ len = grab_bb(buffer, sample->ip, sample->ip,
+ machine, thread, &x.is64bit, &x.cpumode, false);
+ if (len <= 0)
+ return;
+
+ printf("\t%016" PRIx64 "\t%s\n", sample->ip,
+ dump_insn(&x, sample->ip, buffer, len, NULL));
+ return;
+ }
+ for (off = 0; off <= end - start; off += ilen) {
+ printf("\t%016" PRIx64 "\t%s\n", start + off,
+ dump_insn(&x, start + off, buffer + off, len - off, &ilen));
+ if (ilen == 0)
+ break;
+ }
+}
static void print_sample_addr(struct perf_sample *sample,
struct thread *thread,
}
static void print_insn(struct perf_sample *sample,
- struct perf_event_attr *attr)
+ struct perf_event_attr *attr,
+ struct thread *thread,
+ struct machine *machine)
{
if (PRINT_FIELD(INSNLEN))
printf(" ilen: %d", sample->insn_len);
for (i = 0; i < sample->insn_len; i++)
printf(" %02x", (unsigned char)sample->insn[i]);
}
+ if (PRINT_FIELD(BRSTACKINSN))
+ print_sample_brstackinsn(sample, thread, attr, machine);
}
static void print_sample_bts(struct perf_sample *sample,
struct perf_evsel *evsel,
struct thread *thread,
- struct addr_location *al)
+ struct addr_location *al,
+ struct machine *machine)
{
struct perf_event_attr *attr = &evsel->attr;
bool print_srcline_last = false;
if (print_srcline_last)
map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
- print_insn(sample, attr);
+ print_insn(sample, attr, thread, machine);
printf("\n");
}
static void process_event(struct perf_script *script,
struct perf_sample *sample, struct perf_evsel *evsel,
- struct addr_location *al)
+ struct addr_location *al,
+ struct machine *machine)
{
struct thread *thread = al->thread;
struct perf_event_attr *attr = &evsel->attr;
print_sample_flags(sample->flags);
if (is_bts_event(attr)) {
- print_sample_bts(sample, evsel, thread, al);
+ print_sample_bts(sample, evsel, thread, al, machine);
return;
}
if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT))
print_sample_bpf_output(sample);
- print_insn(sample, attr);
+ print_insn(sample, attr, thread, machine);
printf("\n");
}
if (scripting_ops)
scripting_ops->process_event(event, sample, evsel, &al);
else
- process_event(scr, sample, evsel, &al);
+ process_event(scr, sample, evsel, &al, machine);
out_put:
addr_location__put(&al);
"Valid types: hw,sw,trace,raw. "
"Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
"addr,symoff,period,iregs,brstack,brstacksym,flags,"
- "bpf-output,callindent,insn,insnlen", parse_output_fields),
+ "bpf-output,callindent,insn,insnlen,brstackinsn",
+ parse_output_fields),
OPT_BOOLEAN('a', "all-cpus", &system_wide,
"system-wide collection from all CPUs"),
OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
OPT_BOOLEAN('\0', "show-namespace-events", &script.show_namespace_events,
"Show namespace events (if recorded)"),
OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
+ OPT_INTEGER(0, "max-blocks", &max_blocks,
+ "Maximum number of code blocks to dump with brstackinsn"),
OPT_BOOLEAN(0, "ns", &nanosecs,
"Use 9 decimal places when displaying time"),
OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
projects / platform / kernel / linux-rpi.git / commitdiff