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perf script: Support user regs 

Teach perf script to print user regs.

  % perf record --user-regs=ip,sp ...
  % perf script -F ip,sym,uregs
  ...
   ffffffff9e060c24 native_write_msr ABI:2    SP:0x7ffd0ea06c38    IP:0x7fe77f55b637
   ffffffff9e060c24 native_write_msr ABI:2    SP:0x7ffd0ea06c38    IP:0x7fe77f55b637
   ffffffff9e060c24 native_write_msr ABI:2    SP:0x7ffd0ea06c38    IP:0x7fe77f55b637
   ffffffff9e060c24 native_write_msr ABI:2    SP:0x7ffd0ea06c38    IP:0x7fe77f55b637
   ffffffff9e00cc12 intel_pmu_handle_irq ABI:2    SP:0x7ffd0ea06c38    IP:0x7fe77f55b637

v2: Rebased on top of phys-addr patches

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/20170905184057.26135-1-andi@firstfloor.org
[ Use PRIu64 for regs->abi in print_sample_uregs() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen 2017-09-05 11:40:57 -07:00 committed by Arnaldo Carvalho de Melo
parent 84c4174227
commit b1491ace8e
2 changed files with 31 additions and 3 deletions
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4
tools/perf/Documentation/perf-script.txt
View File

@ -116,8 +116,8 @@ OPTIONS
--fields::
Comma separated list of fields to print. Options are:
comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
srcline, period, iregs, brstack, brstacksym, flags, bpf-output, brstackinsn, brstackoff,
callindent, insn, insnlen, synth, phys_addr.
srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output, brstackinsn,
brstackoff, callindent, insn, insnlen, synth, phys_addr.
Field list can be prepended with the type, trace, sw or hw,
to indicate to which event type the field list applies.
e.g., -F sw:comm,tid,time,ip,sym and -F trace:time,cpu,trace

30
tools/perf/builtin-script.c
View File

@ -88,6 +88,7 @@ enum perf_output_field {
PERF_OUTPUT_BRSTACKOFF = 1U << 24,
PERF_OUTPUT_SYNTH = 1U << 25,
PERF_OUTPUT_PHYS_ADDR = 1U << 26,
PERF_OUTPUT_UREGS = 1U << 27,
};
struct output_option {
@ -109,6 +110,7 @@ struct output_option {
{.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
{.str = "period", .field = PERF_OUTPUT_PERIOD},
{.str = "iregs", .field = PERF_OUTPUT_IREGS},
{.str = "uregs", .field = PERF_OUTPUT_UREGS},
{.str = "brstack", .field = PERF_OUTPUT_BRSTACK},
{.str = "brstacksym", .field = PERF_OUTPUT_BRSTACKSYM},
{.str = "data_src", .field = PERF_OUTPUT_DATA_SRC},
@ -385,6 +387,11 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
PERF_OUTPUT_IREGS))
return -EINVAL;
if (PRINT_FIELD(UREGS) &&
perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_USER, "UREGS",
PERF_OUTPUT_UREGS))
return -EINVAL;
if (PRINT_FIELD(PHYS_ADDR) &&
perf_evsel__check_stype(evsel, PERF_SAMPLE_PHYS_ADDR, "PHYS_ADDR",
PERF_OUTPUT_PHYS_ADDR))
@ -509,6 +516,24 @@ static void print_sample_iregs(struct perf_sample *sample,
}
}
static void print_sample_uregs(struct perf_sample *sample,
struct perf_event_attr *attr)
{
struct regs_dump *regs = &sample->user_regs;
uint64_t mask = attr->sample_regs_user;
unsigned i = 0, r;
if (!regs || !regs->regs)
return;
printf(" ABI:%" PRIu64 " ", regs->abi);
for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
u64 val = regs->regs[i++];
printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val);
}
}
static void print_sample_start(struct perf_sample *sample,
struct thread *thread,
struct perf_evsel *evsel)
@ -1444,6 +1469,9 @@ static void process_event(struct perf_script *script,
if (PRINT_FIELD(IREGS))
print_sample_iregs(sample, attr);
if (PRINT_FIELD(UREGS))
print_sample_uregs(sample, attr);
if (PRINT_FIELD(BRSTACK))
print_sample_brstack(sample, thread, attr);
else if (PRINT_FIELD(BRSTACKSYM))
@ -2739,7 +2767,7 @@ int cmd_script(int argc, const char **argv)
"+field to add and -field to remove."
"Valid types: hw,sw,trace,raw,synth. "
"Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
"addr,symoff,period,iregs,brstack,brstacksym,flags,"
"addr,symoff,period,iregs,uregs,brstack,brstacksym,flags,"
"bpf-output,callindent,insn,insnlen,brstackinsn,synth,phys_addr",
parse_output_fields),
OPT_BOOLEAN('a', "all-cpus", &system_wide,