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perf top: Fix userspace sample addr map offset 

The 'perf top' tool came from the kernel where we had each DSO (vmlinux,
modules) loaded just once at a time.

But userspace may have DSOs loaded in multiple addresses (shared
libraries), requiring that we use the just resolved map instead of the
first one found.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
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-ag53wz0yllpgers0n2w7hchp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-09-14 15:54:30 -03:00
parent be96ea8ffa
commit af52aafad2
1 changed files with 5 additions and 4 deletions
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9
tools/perf/builtin-top.c
View File

@ -191,7 +191,8 @@ static void __zero_source_counters(struct sym_entry *syme)
symbol__annotate_zero_histograms(sym); symbol__annotate_zero_histograms(sym);
} }
static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) static void record_precise_ip(struct sym_entry *syme, struct map *map,
int counter, u64 ip)
{ {
struct annotation *notes; struct annotation *notes;
struct symbol *sym; struct symbol *sym;
@ -205,8 +206,8 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
if (pthread_mutex_trylock(&notes->lock)) if (pthread_mutex_trylock(&notes->lock))
return; return;
ip = syme->map->map_ip(syme->map, ip); ip = map->map_ip(map, ip);
symbol__inc_addr_samples(sym, syme->map, counter, ip); symbol__inc_addr_samples(sym, map, counter, ip);
pthread_mutex_unlock(&notes->lock); pthread_mutex_unlock(&notes->lock);
} }
@ -810,7 +811,7 @@ static void perf_event__process_sample(const union perf_event *event,
evsel = perf_evlist__id2evsel(top.evlist, sample->id); evsel = perf_evlist__id2evsel(top.evlist, sample->id);
assert(evsel != NULL); assert(evsel != NULL);
syme->count[evsel->idx]++; syme->count[evsel->idx]++;
record_precise_ip(syme, evsel->idx, ip); record_precise_ip(syme, al.map, evsel->idx, ip);
pthread_mutex_lock(&top.active_symbols_lock); pthread_mutex_lock(&top.active_symbols_lock);
if (list_empty(&syme->node) || !syme->node.next) { if (list_empty(&syme->node) || !syme->node.next) {
static bool first = true; static bool first = true;