Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf, x86: Complain louder about BIOSen corrupting CPU/PMU state and continue
perf, x86: P4 PMU - Read proper MSR register to catch unflagged overflows
perf symbols: Look at .dynsym again if .symtab not found
perf build-id: Add quirk to deal with perf.data file format breakage
perf session: Pass evsel in event_ops->sample()
perf: Better fit max unprivileged mlock pages for tools needs
perf_events: Fix stale ->cgrp pointer in update_cgrp_time_from_cpuctx()
perf top: Fix uninitialized 'counter' variable
tracing: Fix set_ftrace_filter probe function display
perf, x86: Fix Intel fixed counters base initialization
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 87eab4a..eed3673a 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -500,12 +500,17 @@
return true;
bios_fail:
- printk(KERN_CONT "Broken BIOS detected, using software events only.\n");
+ /*
+ * We still allow the PMU driver to operate:
+ */
+ printk(KERN_CONT "Broken BIOS detected, complain to your hardware vendor.\n");
printk(KERN_ERR FW_BUG "the BIOS has corrupted hw-PMU resources (MSR %x is %Lx)\n", reg, val);
- return false;
+
+ return true;
msr_fail:
printk(KERN_CONT "Broken PMU hardware detected, using software events only.\n");
+
return false;
}
@@ -912,7 +917,7 @@
hwc->event_base = 0;
} else if (hwc->idx >= X86_PMC_IDX_FIXED) {
hwc->config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL;
- hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0;
+ hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0 + (hwc->idx - X86_PMC_IDX_FIXED);
} else {
hwc->config_base = x86_pmu_config_addr(hwc->idx);
hwc->event_base = x86_pmu_event_addr(hwc->idx);
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index 0811f5e..c2520e1 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -777,6 +777,7 @@
* the counter has reached zero value and continued counting before
* real NMI signal was received:
*/
+ rdmsrl(hwc->event_base, v);
if (!(v & ARCH_P4_UNFLAGGED_BIT))
return 1;
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index f495c01..311b4dc 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -938,9 +938,7 @@
struct list_head rotation_list;
int jiffies_interval;
struct pmu *active_pmu;
-#ifdef CONFIG_CGROUP_PERF
struct perf_cgroup *cgrp;
-#endif
};
struct perf_output_handle {
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 3472bb1..c75925c 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -145,7 +145,8 @@
*/
int sysctl_perf_event_paranoid __read_mostly = 1;
-int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */
+/* Minimum for 128 pages + 1 for the user control page */
+int sysctl_perf_event_mlock __read_mostly = 516; /* 'free' kb per user */
/*
* max perf event sample rate
@@ -941,6 +942,7 @@
static void
list_del_event(struct perf_event *event, struct perf_event_context *ctx)
{
+ struct perf_cpu_context *cpuctx;
/*
* We can have double detach due to exit/hot-unplug + close.
*/
@@ -949,8 +951,17 @@
event->attach_state &= ~PERF_ATTACH_CONTEXT;
- if (is_cgroup_event(event))
+ if (is_cgroup_event(event)) {
ctx->nr_cgroups--;
+ cpuctx = __get_cpu_context(ctx);
+ /*
+ * if there are no more cgroup events
+ * then cler cgrp to avoid stale pointer
+ * in update_cgrp_time_from_cpuctx()
+ */
+ if (!ctx->nr_cgroups)
+ cpuctx->cgrp = NULL;
+ }
ctx->nr_events--;
if (event->attr.inherit_stat)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 888b611..c075f4e 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1467,7 +1467,7 @@
return t_hash_next(m, pos);
(*pos)++;
- iter->pos = *pos;
+ iter->pos = iter->func_pos = *pos;
if (iter->flags & FTRACE_ITER_PRINTALL)
return t_hash_start(m, pos);
@@ -1502,7 +1502,6 @@
if (!rec)
return t_hash_start(m, pos);
- iter->func_pos = *pos;
iter->func = rec;
return iter;
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 695de4b..e18eb7e 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -42,9 +42,9 @@
static int perf_evlist__add_sample(struct perf_evlist *evlist,
struct perf_sample *sample,
+ struct perf_evsel *evsel,
struct addr_location *al)
{
- struct perf_evsel *evsel;
struct hist_entry *he;
int ret;
@@ -59,18 +59,6 @@
return 0;
}
- evsel = perf_evlist__id2evsel(evlist, sample->id);
- if (evsel == NULL) {
- /*
- * FIXME: Propagate this back, but at least we're in a builtin,
- * where exit() is allowed. ;-)
- */
- ui__warning("Invalid %s file, contains samples with id not in "
- "its header!\n", input_name);
- exit_browser(0);
- exit(1);
- }
-
he = __hists__add_entry(&evsel->hists, al, NULL, 1);
if (he == NULL)
return -ENOMEM;
@@ -92,6 +80,7 @@
static int process_sample_event(union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel,
struct perf_session *session)
{
struct addr_location al;
@@ -103,7 +92,8 @@
return -1;
}
- if (!al.filtered && perf_evlist__add_sample(session->evlist, sample, &al)) {
+ if (!al.filtered &&
+ perf_evlist__add_sample(session->evlist, sample, evsel, &al)) {
pr_warning("problem incrementing symbol count, "
"skipping event\n");
return -1;
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 6b7d911..e821999 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -32,6 +32,7 @@
static int diff__process_sample_event(union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel __used,
struct perf_session *session)
{
struct addr_location al;
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index e29f04e..8dfc12b 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -43,6 +43,14 @@
return perf_event__repipe_synth(event, session);
}
+static int perf_event__repipe_sample(union perf_event *event,
+ struct perf_sample *sample __used,
+ struct perf_evsel *evsel __used,
+ struct perf_session *session)
+{
+ return perf_event__repipe_synth(event, session);
+}
+
static int perf_event__repipe_mmap(union perf_event *event,
struct perf_sample *sample,
struct perf_session *session)
@@ -124,6 +132,7 @@
static int perf_event__inject_buildid(union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel __used,
struct perf_session *session)
{
struct addr_location al;
@@ -164,7 +173,7 @@
}
struct perf_event_ops inject_ops = {
- .sample = perf_event__repipe,
+ .sample = perf_event__repipe_sample,
.mmap = perf_event__repipe,
.comm = perf_event__repipe,
.fork = perf_event__repipe,
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 7f618f4..225e963 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -305,6 +305,7 @@
static int process_sample_event(union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel __used,
struct perf_session *session)
{
struct thread *thread = perf_session__findnew(session, event->ip.pid);
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 7a2a79d2..9ac05aa 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -845,7 +845,9 @@
die("Unknown type of information\n");
}
-static int process_sample_event(union perf_event *event, struct perf_sample *sample,
+static int process_sample_event(union perf_event *event,
+ struct perf_sample *sample,
+ struct perf_evsel *evsel __used,
struct perf_session *s)
{
struct thread *thread = perf_session__findnew(s, sample->tid);
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index b1b8200..498c6f7 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -50,12 +50,12 @@
static int perf_session__add_hist_entry(struct perf_session *session,
struct addr_location *al,
- struct perf_sample *sample)
+ struct perf_sample *sample,
+ struct perf_evsel *evsel)
{
struct symbol *parent = NULL;
int err = 0;
struct hist_entry *he;
- struct perf_evsel *evsel;
if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) {
err = perf_session__resolve_callchain(session, al->thread,
@@ -64,18 +64,6 @@
return err;
}
- evsel = perf_evlist__id2evsel(session->evlist, sample->id);
- if (evsel == NULL) {
- /*
- * FIXME: Propagate this back, but at least we're in a builtin,
- * where exit() is allowed. ;-)
- */
- ui__warning("Invalid %s file, contains samples with id %" PRIu64 " not in "
- "its header!\n", input_name, sample->id);
- exit_browser(0);
- exit(1);
- }
-
he = __hists__add_entry(&evsel->hists, al, parent, sample->period);
if (he == NULL)
return -ENOMEM;
@@ -113,6 +101,7 @@
static int process_sample_event(union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel,
struct perf_session *session)
{
struct addr_location al;
@@ -127,7 +116,7 @@
if (al.filtered || (hide_unresolved && al.sym == NULL))
return 0;
- if (perf_session__add_hist_entry(session, &al, sample)) {
+ if (perf_session__add_hist_entry(session, &al, sample, evsel)) {
pr_debug("problem incrementing symbol period, skipping event\n");
return -1;
}
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index a32f411..dcfe887 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1603,6 +1603,7 @@
static int process_sample_event(union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel __used,
struct perf_session *session)
{
struct thread *thread;
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 9f5fc54..ac574ea 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -162,19 +162,11 @@
static void process_event(union perf_event *event __unused,
struct perf_sample *sample,
+ struct perf_evsel *evsel,
struct perf_session *session,
struct thread *thread)
{
- struct perf_event_attr *attr;
- struct perf_evsel *evsel;
-
- evsel = perf_evlist__id2evsel(session->evlist, sample->id);
- if (evsel == NULL) {
- pr_err("Invalid data. Contains samples with id not in "
- "its header!\n");
- return;
- }
- attr = &evsel->attr;
+ struct perf_event_attr *attr = &evsel->attr;
if (output_fields[attr->type] == 0)
return;
@@ -244,6 +236,7 @@
static int process_sample_event(union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel,
struct perf_session *session)
{
struct thread *thread = perf_session__findnew(session, event->ip.pid);
@@ -264,7 +257,7 @@
last_timestamp = sample->time;
return 0;
}
- scripting_ops->process_event(event, sample, session, thread);
+ scripting_ops->process_event(event, sample, evsel, session, thread);
session->hists.stats.total_period += sample->period;
return 0;
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 67c0459..aa26f4d 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -488,6 +488,7 @@
static int process_sample_event(union perf_event *event __used,
struct perf_sample *sample,
+ struct perf_evsel *evsel __used,
struct perf_session *session)
{
struct trace_entry *te;
@@ -506,6 +507,16 @@
struct power_entry_old *peo;
peo = (void *)te;
#endif
+ /*
+ * FIXME: use evsel, its already mapped from id to perf_evsel,
+ * remove perf_header__find_event infrastructure bits.
+ * Mapping all these "power:cpu_idle" strings to the tracepoint
+ * ID and then just comparing against evsel->attr.config.
+ *
+ * e.g.:
+ *
+ * if (evsel->attr.config == power_cpu_idle_id)
+ */
event_str = perf_header__find_event(te->type);
if (!event_str)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 70f1075..676b4fb 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -515,7 +515,9 @@
break;
case 'E':
if (top.evlist->nr_entries > 1) {
- int counter;
+ /* Select 0 as the default event: */
+ int counter = 0;
+
fprintf(stderr, "\nAvailable events:");
list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 31f934a..a91cd99 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -16,6 +16,7 @@
static int build_id__mark_dso_hit(union perf_event *event,
struct perf_sample *sample __used,
+ struct perf_evsel *evsel __used,
struct perf_session *session)
{
struct addr_location al;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index e5230c0..93862a8 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -695,13 +695,50 @@
return err;
}
+static int perf_header__read_build_ids_abi_quirk(struct perf_header *header,
+ int input, u64 offset, u64 size)
+{
+ struct perf_session *session = container_of(header, struct perf_session, header);
+ struct {
+ struct perf_event_header header;
+ u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))];
+ char filename[0];
+ } old_bev;
+ struct build_id_event bev;
+ char filename[PATH_MAX];
+ u64 limit = offset + size;
+
+ while (offset < limit) {
+ ssize_t len;
+
+ if (read(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev))
+ return -1;
+
+ if (header->needs_swap)
+ perf_event_header__bswap(&old_bev.header);
+
+ len = old_bev.header.size - sizeof(old_bev);
+ if (read(input, filename, len) != len)
+ return -1;
+
+ bev.header = old_bev.header;
+ bev.pid = 0;
+ memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id));
+ __event_process_build_id(&bev, filename, session);
+
+ offset += bev.header.size;
+ }
+
+ return 0;
+}
+
static int perf_header__read_build_ids(struct perf_header *header,
int input, u64 offset, u64 size)
{
struct perf_session *session = container_of(header, struct perf_session, header);
struct build_id_event bev;
char filename[PATH_MAX];
- u64 limit = offset + size;
+ u64 limit = offset + size, orig_offset = offset;
int err = -1;
while (offset < limit) {
@@ -716,6 +753,24 @@
len = bev.header.size - sizeof(bev);
if (read(input, filename, len) != len)
goto out;
+ /*
+ * The a1645ce1 changeset:
+ *
+ * "perf: 'perf kvm' tool for monitoring guest performance from host"
+ *
+ * Added a field to struct build_id_event that broke the file
+ * format.
+ *
+ * Since the kernel build-id is the first entry, process the
+ * table using the old format if the well known
+ * '[kernel.kallsyms]' string for the kernel build-id has the
+ * first 4 characters chopped off (where the pid_t sits).
+ */
+ if (memcmp(filename, "nel.kallsyms]", 13) == 0) {
+ if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1)
+ return -1;
+ return perf_header__read_build_ids_abi_quirk(header, input, offset, size);
+ }
__event_process_build_id(&bev, filename, session);
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index cb6858a..3beb97c 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -29,6 +29,7 @@
u32 nr_events[PERF_RECORD_HEADER_MAX];
u32 nr_unknown_events;
u32 nr_invalid_chains;
+ u32 nr_unknown_id;
};
enum hist_column {
diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c
index 6214272..74350ff 100644
--- a/tools/perf/util/scripting-engines/trace-event-perl.c
+++ b/tools/perf/util/scripting-engines/trace-event-perl.c
@@ -247,6 +247,7 @@
static void perl_process_event(union perf_event *pevent __unused,
struct perf_sample *sample,
+ struct perf_evsel *evsel,
struct perf_session *session __unused,
struct thread *thread)
{
diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index 1b85d60..6ccf70e 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -206,6 +206,7 @@
static void python_process_event(union perf_event *pevent __unused,
struct perf_sample *sample,
+ struct perf_evsel *evsel __unused,
struct perf_session *session __unused,
struct thread *thread)
{
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index c68cf40..caa2245 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -280,6 +280,15 @@
return 0;
}
+static int process_event_sample_stub(union perf_event *event __used,
+ struct perf_sample *sample __used,
+ struct perf_evsel *evsel __used,
+ struct perf_session *session __used)
+{
+ dump_printf(": unhandled!\n");
+ return 0;
+}
+
static int process_event_stub(union perf_event *event __used,
struct perf_sample *sample __used,
struct perf_session *session __used)
@@ -303,7 +312,7 @@
static void perf_event_ops__fill_defaults(struct perf_event_ops *handler)
{
if (handler->sample == NULL)
- handler->sample = process_event_stub;
+ handler->sample = process_event_sample_stub;
if (handler->mmap == NULL)
handler->mmap = process_event_stub;
if (handler->comm == NULL)
@@ -698,12 +707,19 @@
struct perf_event_ops *ops,
u64 file_offset)
{
+ struct perf_evsel *evsel;
+
dump_event(session, event, file_offset, sample);
switch (event->header.type) {
case PERF_RECORD_SAMPLE:
dump_sample(session, event, sample);
- return ops->sample(event, sample, session);
+ evsel = perf_evlist__id2evsel(session->evlist, sample->id);
+ if (evsel == NULL) {
+ ++session->hists.stats.nr_unknown_id;
+ return -1;
+ }
+ return ops->sample(event, sample, evsel, session);
case PERF_RECORD_MMAP:
return ops->mmap(event, sample, session);
case PERF_RECORD_COMM:
@@ -845,6 +861,11 @@
session->hists.stats.nr_unknown_events);
}
+ if (session->hists.stats.nr_unknown_id != 0) {
+ ui__warning("%u samples with id not present in the header\n",
+ session->hists.stats.nr_unknown_id);
+ }
+
if (session->hists.stats.nr_invalid_chains != 0) {
ui__warning("Found invalid callchains!\n\n"
"%u out of %u events were discarded for this reason.\n\n"
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 0b3c9af..1ac481f 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -55,8 +55,11 @@
char filename[0];
};
+struct perf_evsel;
struct perf_event_ops;
+typedef int (*event_sample)(union perf_event *event, struct perf_sample *sample,
+ struct perf_evsel *evsel, struct perf_session *session);
typedef int (*event_op)(union perf_event *self, struct perf_sample *sample,
struct perf_session *session);
typedef int (*event_synth_op)(union perf_event *self,
@@ -65,8 +68,8 @@
struct perf_event_ops *ops);
struct perf_event_ops {
- event_op sample,
- mmap,
+ event_sample sample;
+ event_op mmap,
comm,
fork,
exit,
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 651dbfe..17df793 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1486,7 +1486,9 @@
* On the first pass, only load images if they have a full symtab.
* Failing that, do a second pass where we accept .dynsym also
*/
- for (self->symtab_type = SYMTAB__BUILD_ID_CACHE, want_symtab = 1;
+ want_symtab = 1;
+restart:
+ for (self->symtab_type = SYMTAB__BUILD_ID_CACHE;
self->symtab_type != SYMTAB__NOT_FOUND;
self->symtab_type++) {
switch (self->symtab_type) {
@@ -1536,17 +1538,7 @@
snprintf(name, size, "%s%s", symbol_conf.symfs,
self->long_name);
break;
-
- default:
- /*
- * If we wanted a full symtab but no image had one,
- * relax our requirements and repeat the search.
- */
- if (want_symtab) {
- want_symtab = 0;
- self->symtab_type = SYMTAB__BUILD_ID_CACHE;
- } else
- continue;
+ default:;
}
/* Name is now the name of the next image to try */
@@ -1573,6 +1565,15 @@
}
}
+ /*
+ * If we wanted a full symtab but no image had one,
+ * relax our requirements and repeat the search.
+ */
+ if (ret <= 0 && want_symtab) {
+ want_symtab = 0;
+ goto restart;
+ }
+
free(name);
if (ret < 0 && strstr(self->name, " (deleted)") != NULL)
return 0;
diff --git a/tools/perf/util/trace-event-scripting.c b/tools/perf/util/trace-event-scripting.c
index 66f4b78..c9dcbec 100644
--- a/tools/perf/util/trace-event-scripting.c
+++ b/tools/perf/util/trace-event-scripting.c
@@ -38,6 +38,7 @@
static void process_event_unsupported(union perf_event *event __unused,
struct perf_sample *sample __unused,
+ struct perf_evsel *evsel __unused,
struct perf_session *session __unused,
struct thread *thread __unused)
{
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index b04da57..f674dda 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -280,6 +280,7 @@
int (*stop_script) (void);
void (*process_event) (union perf_event *event,
struct perf_sample *sample,
+ struct perf_evsel *evsel,
struct perf_session *session,
struct thread *thread);
int (*generate_script) (const char *outfile);