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perf callchain: Move cpumode resolve code to add_callchain_ip

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Using flag to distinguish between branch_history and normal callchain.

Move the cpumode to add_callchain_ip function.

No change in behavior.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1417532814-26208-3-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kan Liang 2014-12-02 10:06:53 -05:00 • committed by Arnaldo Carvalho de Melo
commit 2e77784bb7
1 changed files with 35 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

72
tools/perf/util/machine.c
View file

@ -1385,19 +1385,46 @@ struct mem_info *sample__resolve_mem(struct perf_sample *sample,
static int add_callchain_ip(struct thread *thread,
struct symbol **parent,
struct addr_location *root_al,
int cpumode,
bool branch_history,
u64 ip)
{
struct addr_location al;
al.filtered = 0;
al.sym = NULL;
if (cpumode == -1)
if (branch_history)
thread__find_cpumode_addr_location(thread, MAP__FUNCTION,
ip, &al);
else
else {
u8 cpumode = PERF_RECORD_MISC_USER;
if (ip >= PERF_CONTEXT_MAX) {
switch (ip) {
case PERF_CONTEXT_HV:
cpumode = PERF_RECORD_MISC_HYPERVISOR;
break;
case PERF_CONTEXT_KERNEL:
cpumode = PERF_RECORD_MISC_KERNEL;
break;
case PERF_CONTEXT_USER:
cpumode = PERF_RECORD_MISC_USER;
break;
default:
pr_debug("invalid callchain context: "
"%"PRId64"\n", (s64) ip);
/*
* It seems the callchain is corrupted.
* Discard all.
*/
callchain_cursor_reset(&callchain_cursor);
return 1;
}
return 0;
}
thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
ip, &al);
}
if (al.sym != NULL) {
if (sort__has_parent && !*parent &&
symbol__match_regex(al.sym, &parent_regex))
@ -1480,11 +1507,8 @@ static int thread__resolve_callchain_sample(struct thread *thread,
struct addr_location *root_al,
int max_stack)
{
u8 cpumode = PERF_RECORD_MISC_USER;
int chain_nr = min(max_stack, (int)chain->nr);
int i;
int j;
int err;
int i, j, err;
int skip_idx = -1;
int first_call = 0;
@ -1542,10 +1566,10 @@ static int thread__resolve_callchain_sample(struct thread *thread,
for (i = 0; i < nr; i++) {
err = add_callchain_ip(thread, parent, root_al,
-1, be[i].to);
true, be[i].to);
if (!err)
err = add_callchain_ip(thread, parent, root_al,
-1, be[i].from);
true, be[i].from);
if (err == -EINVAL)
break;
if (err)
@ -1574,36 +1598,10 @@ check_calls:
#endif
ip = chain->ips[j];
if (ip >= PERF_CONTEXT_MAX) {
switch (ip) {
case PERF_CONTEXT_HV:
cpumode = PERF_RECORD_MISC_HYPERVISOR;
break;
case PERF_CONTEXT_KERNEL:
cpumode = PERF_RECORD_MISC_KERNEL;
break;
case PERF_CONTEXT_USER:
cpumode = PERF_RECORD_MISC_USER;
break;
default:
pr_debug("invalid callchain context: "
"%"PRId64"\n", (s64) ip);
/*
* It seems the callchain is corrupted.
* Discard all.
*/
callchain_cursor_reset(&callchain_cursor);
return 0;
}
continue;
}
err = add_callchain_ip(thread, parent, root_al, false, ip);
err = add_callchain_ip(thread, parent, root_al,
cpumode, ip);
if (err == -EINVAL)
break;
if (err)
return err;
return (err < 0) ? err : 0;
}
return 0;