Commit a7ca0803 authored by Ingo Molnar's avatar Ingo Molnar

Merge tag 'perf-urgent-for-mingo' of...

Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull various perf tooling fixes from Arnaldo Carvalho de Melo.
parents 4166fb64 7fb0a5ee
......@@ -42,6 +42,7 @@
#include "util/debug.h"
#include <assert.h>
#include <elf.h>
#include <fcntl.h>
#include <stdio.h>
......@@ -59,6 +60,7 @@
#include <sys/prctl.h>
#include <sys/wait.h>
#include <sys/uio.h>
#include <sys/utsname.h>
#include <sys/mman.h>
#include <linux/unistd.h>
......@@ -162,12 +164,40 @@ static void __zero_source_counters(struct hist_entry *he)
symbol__annotate_zero_histograms(sym);
}
static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip)
{
struct utsname uts;
int err = uname(&uts);
ui__warning("Out of bounds address found:\n\n"
"Addr: %" PRIx64 "\n"
"DSO: %s %c\n"
"Map: %" PRIx64 "-%" PRIx64 "\n"
"Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n"
"Arch: %s\n"
"Kernel: %s\n"
"Tools: %s\n\n"
"Not all samples will be on the annotation output.\n\n"
"Please report to linux-kernel@vger.kernel.org\n",
ip, map->dso->long_name, dso__symtab_origin(map->dso),
map->start, map->end, sym->start, sym->end,
sym->binding == STB_GLOBAL ? 'g' :
sym->binding == STB_LOCAL ? 'l' : 'w', sym->name,
err ? "[unknown]" : uts.machine,
err ? "[unknown]" : uts.release, perf_version_string);
if (use_browser <= 0)
sleep(5);
map->erange_warned = true;
}
static void perf_top__record_precise_ip(struct perf_top *top,
struct hist_entry *he,
int counter, u64 ip)
{
struct annotation *notes;
struct symbol *sym;
int err;
if (he == NULL || he->ms.sym == NULL ||
((top->sym_filter_entry == NULL ||
......@@ -189,9 +219,12 @@ static void perf_top__record_precise_ip(struct perf_top *top,
}
ip = he->ms.map->map_ip(he->ms.map, ip);
symbol__inc_addr_samples(sym, he->ms.map, counter, ip);
err = symbol__inc_addr_samples(sym, he->ms.map, counter, ip);
pthread_mutex_unlock(&notes->lock);
if (err == -ERANGE && !he->ms.map->erange_warned)
ui__warn_map_erange(he->ms.map, sym, ip);
}
static void perf_top__show_details(struct perf_top *top)
......@@ -615,6 +648,7 @@ static void *display_thread(void *arg)
/* Tag samples to be skipped. */
static const char *skip_symbols[] = {
"intel_idle",
"default_idle",
"native_safe_halt",
"cpu_idle",
......
......@@ -64,8 +64,8 @@ int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
if (addr > sym->end)
return 0;
if (addr < sym->start || addr > sym->end)
return -ERANGE;
offset = addr - sym->start;
h = annotation__histogram(notes, evidx);
......@@ -561,16 +561,12 @@ void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
{
struct annotation *notes = symbol__annotation(sym);
struct sym_hist *h = annotation__histogram(notes, evidx);
struct objdump_line *pos;
int len = sym->end - sym->start;
int len = sym->end - sym->start, offset;
h->sum = 0;
list_for_each_entry(pos, &notes->src->source, node) {
if (pos->offset != -1 && pos->offset < len) {
h->addr[pos->offset] = h->addr[pos->offset] * 7 / 8;
h->sum += h->addr[pos->offset];
}
for (offset = 0; offset < len; ++offset) {
h->addr[offset] = h->addr[offset] * 7 / 8;
h->sum += h->addr[offset];
}
}
......
......@@ -256,6 +256,18 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
if (!cmp) {
he->period += period;
++he->nr_events;
/* If the map of an existing hist_entry has
* become out-of-date due to an exec() or
* similar, update it. Otherwise we will
* mis-adjust symbol addresses when computing
* the history counter to increment.
*/
if (he->ms.map != entry->ms.map) {
he->ms.map = entry->ms.map;
if (he->ms.map)
he->ms.map->referenced = true;
}
goto out;
}
......
......@@ -38,6 +38,7 @@ void map__init(struct map *self, enum map_type type,
RB_CLEAR_NODE(&self->rb_node);
self->groups = NULL;
self->referenced = false;
self->erange_warned = false;
}
struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
......
......@@ -33,6 +33,7 @@ struct map {
u64 end;
u8 /* enum map_type */ type;
bool referenced;
bool erange_warned;
u32 priv;
u64 pgoff;
......
......@@ -826,8 +826,16 @@ static struct machine *
{
const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest)
return perf_session__find_machine(session, event->ip.pid);
if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
u32 pid;
if (event->header.type == PERF_RECORD_MMAP)
pid = event->mmap.pid;
else
pid = event->ip.pid;
return perf_session__find_machine(session, pid);
}
return perf_session__find_host_machine(session);
}
......
......@@ -125,6 +125,9 @@ static int callchain__count_rows(struct rb_root *chain)
static bool map_symbol__toggle_fold(struct map_symbol *self)
{
if (!self)
return false;
if (!self->has_children)
return false;
......
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