Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 198 insertions, 156 deletions

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index ea51a90e20a0..33e3fd8c2e68 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -32,8 +32,12 @@ static struct {
 	bool exclude_guest;
 	bool mmap2;
 	bool cloexec;
+	bool clockid;
+	bool clockid_wrong;
 } perf_missing_features;
 
+static clockid_t clockid;
+
 static int perf_evsel__no_extra_init(struct perf_evsel *evsel __maybe_unused)
 {
 	return 0;
@@ -537,13 +541,30 @@ int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size)
 }
 
 static void
-perf_evsel__config_callgraph(struct perf_evsel *evsel)
+perf_evsel__config_callgraph(struct perf_evsel *evsel,
+			     struct record_opts *opts)
 {
 	bool function = perf_evsel__is_function_event(evsel);
 	struct perf_event_attr *attr = &evsel->attr;
 
 	perf_evsel__set_sample_bit(evsel, CALLCHAIN);
 
+	if (callchain_param.record_mode == CALLCHAIN_LBR) {
+		if (!opts->branch_stack) {
+			if (attr->exclude_user) {
+				pr_warning("LBR callstack option is only available "
+					   "to get user callchain information. "
+					   "Falling back to framepointers.\n");
+			} else {
+				perf_evsel__set_sample_bit(evsel, BRANCH_STACK);
+				attr->branch_sample_type = PERF_SAMPLE_BRANCH_USER |
+							PERF_SAMPLE_BRANCH_CALL_STACK;
+			}
+		} else
+			 pr_warning("Cannot use LBR callstack with branch stack. "
+				    "Falling back to framepointers.\n");
+	}
+
 	if (callchain_param.record_mode == CALLCHAIN_DWARF) {
 		if (!function) {
 			perf_evsel__set_sample_bit(evsel, REGS_USER);
@@ -667,7 +688,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
 		evsel->attr.exclude_callchain_user = 1;
 
 	if (callchain_param.enabled && !evsel->no_aux_samples)
-		perf_evsel__config_callgraph(evsel);
+		perf_evsel__config_callgraph(evsel, opts);
 
 	if (opts->sample_intr_regs) {
 		attr->sample_regs_intr = PERF_REGS_MASK;
@@ -717,6 +738,12 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
 	if (opts->sample_transaction)
 		perf_evsel__set_sample_bit(evsel, TRANSACTION);
 
+	if (opts->running_time) {
+		evsel->attr.read_format |=
+			PERF_FORMAT_TOTAL_TIME_ENABLED |
+			PERF_FORMAT_TOTAL_TIME_RUNNING;
+	}
+
 	/*
 	 * XXX see the function comment above
 	 *
@@ -738,6 +765,12 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
 		attr->disabled = 0;
 		attr->enable_on_exec = 0;
 	}
+
+	clockid = opts->clockid;
+	if (opts->use_clockid) {
+		attr->use_clockid = 1;
+		attr->clockid = opts->clockid;
+	}
 }
 
 static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
@@ -978,67 +1011,126 @@ static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread)
 	return fd;
 }
 
-#define __PRINT_ATTR(fmt, cast, field)  \
-	fprintf(fp, "  %-19s "fmt"\n", #field, cast attr->field)
-
-#define PRINT_ATTR_U32(field)  __PRINT_ATTR("%u" , , field)
-#define PRINT_ATTR_X32(field)  __PRINT_ATTR("%#x", , field)
-#define PRINT_ATTR_U64(field)  __PRINT_ATTR("%" PRIu64, (uint64_t), field)
-#define PRINT_ATTR_X64(field)  __PRINT_ATTR("%#"PRIx64, (uint64_t), field)
-
-#define PRINT_ATTR2N(name1, field1, name2, field2)	\
-	fprintf(fp, "  %-19s %u    %-19s %u\n",		\
-	name1, attr->field1, name2, attr->field2)
-
-#define PRINT_ATTR2(field1, field2) \
-	PRINT_ATTR2N(#field1, field1, #field2, field2)
-
-static size_t perf_event_attr__fprintf(struct perf_event_attr *attr, FILE *fp)
-{
-	size_t ret = 0;
-
-	ret += fprintf(fp, "%.60s\n", graph_dotted_line);
-	ret += fprintf(fp, "perf_event_attr:\n");
-
-	ret += PRINT_ATTR_U32(type);
-	ret += PRINT_ATTR_U32(size);
-	ret += PRINT_ATTR_X64(config);
-	ret += PRINT_ATTR_U64(sample_period);
-	ret += PRINT_ATTR_U64(sample_freq);
-	ret += PRINT_ATTR_X64(sample_type);
-	ret += PRINT_ATTR_X64(read_format);
-
-	ret += PRINT_ATTR2(disabled, inherit);
-	ret += PRINT_ATTR2(pinned, exclusive);
-	ret += PRINT_ATTR2(exclude_user, exclude_kernel);
-	ret += PRINT_ATTR2(exclude_hv, exclude_idle);
-	ret += PRINT_ATTR2(mmap, comm);
-	ret += PRINT_ATTR2(mmap2, comm_exec);
-	ret += PRINT_ATTR2(freq, inherit_stat);
-	ret += PRINT_ATTR2(enable_on_exec, task);
-	ret += PRINT_ATTR2(watermark, precise_ip);
-	ret += PRINT_ATTR2(mmap_data, sample_id_all);
-	ret += PRINT_ATTR2(exclude_host, exclude_guest);
-	ret += PRINT_ATTR2N("excl.callchain_kern", exclude_callchain_kernel,
-			    "excl.callchain_user", exclude_callchain_user);
-
-	ret += PRINT_ATTR_U32(wakeup_events);
-	ret += PRINT_ATTR_U32(wakeup_watermark);
-	ret += PRINT_ATTR_X32(bp_type);
-	ret += PRINT_ATTR_X64(bp_addr);
-	ret += PRINT_ATTR_X64(config1);
-	ret += PRINT_ATTR_U64(bp_len);
-	ret += PRINT_ATTR_X64(config2);
-	ret += PRINT_ATTR_X64(branch_sample_type);
-	ret += PRINT_ATTR_X64(sample_regs_user);
-	ret += PRINT_ATTR_U32(sample_stack_user);
-	ret += PRINT_ATTR_X64(sample_regs_intr);
-
-	ret += fprintf(fp, "%.60s\n", graph_dotted_line);
+struct bit_names {
+	int bit;
+	const char *name;
+};
+
+static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits)
+{
+	bool first_bit = true;
+	int i = 0;
+
+	do {
+		if (value & bits[i].bit) {
+			buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name);
+			first_bit = false;
+		}
+	} while (bits[++i].name != NULL);
+}
+
+static void __p_sample_type(char *buf, size_t size, u64 value)
+{
+#define bit_name(n) { PERF_SAMPLE_##n, #n }
+	struct bit_names bits[] = {
+		bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
+		bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
+		bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
+		bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
+		bit_name(IDENTIFIER), bit_name(REGS_INTR),
+		{ .name = NULL, }
+	};
+#undef bit_name
+	__p_bits(buf, size, value, bits);
+}
+
+static void __p_read_format(char *buf, size_t size, u64 value)
+{
+#define bit_name(n) { PERF_FORMAT_##n, #n }
+	struct bit_names bits[] = {
+		bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
+		bit_name(ID), bit_name(GROUP),
+		{ .name = NULL, }
+	};
+#undef bit_name
+	__p_bits(buf, size, value, bits);
+}
+
+#define BUF_SIZE		1024
+
+#define p_hex(val)		snprintf(buf, BUF_SIZE, "%"PRIx64, (uint64_t)(val))
+#define p_unsigned(val)		snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val))
+#define p_signed(val)		snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val))
+#define p_sample_type(val)	__p_sample_type(buf, BUF_SIZE, val)
+#define p_read_format(val)	__p_read_format(buf, BUF_SIZE, val)
+
+#define PRINT_ATTRn(_n, _f, _p)				\
+do {							\
+	if (attr->_f) {					\
+		_p(attr->_f);				\
+		ret += attr__fprintf(fp, _n, buf, priv);\
+	}						\
+} while (0)
+
+#define PRINT_ATTRf(_f, _p)	PRINT_ATTRn(#_f, _f, _p)
+
+int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
+			     attr__fprintf_f attr__fprintf, void *priv)
+{
+	char buf[BUF_SIZE];
+	int ret = 0;
+
+	PRINT_ATTRf(type, p_unsigned);
+	PRINT_ATTRf(size, p_unsigned);
+	PRINT_ATTRf(config, p_hex);
+	PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned);
+	PRINT_ATTRf(sample_type, p_sample_type);
+	PRINT_ATTRf(read_format, p_read_format);
+
+	PRINT_ATTRf(disabled, p_unsigned);
+	PRINT_ATTRf(inherit, p_unsigned);
+	PRINT_ATTRf(pinned, p_unsigned);
+	PRINT_ATTRf(exclusive, p_unsigned);
+	PRINT_ATTRf(exclude_user, p_unsigned);
+	PRINT_ATTRf(exclude_kernel, p_unsigned);
+	PRINT_ATTRf(exclude_hv, p_unsigned);
+	PRINT_ATTRf(exclude_idle, p_unsigned);
+	PRINT_ATTRf(mmap, p_unsigned);
+	PRINT_ATTRf(comm, p_unsigned);
+	PRINT_ATTRf(freq, p_unsigned);
+	PRINT_ATTRf(inherit_stat, p_unsigned);
+	PRINT_ATTRf(enable_on_exec, p_unsigned);
+	PRINT_ATTRf(task, p_unsigned);
+	PRINT_ATTRf(watermark, p_unsigned);
+	PRINT_ATTRf(precise_ip, p_unsigned);
+	PRINT_ATTRf(mmap_data, p_unsigned);
+	PRINT_ATTRf(sample_id_all, p_unsigned);
+	PRINT_ATTRf(exclude_host, p_unsigned);
+	PRINT_ATTRf(exclude_guest, p_unsigned);
+	PRINT_ATTRf(exclude_callchain_kernel, p_unsigned);
+	PRINT_ATTRf(exclude_callchain_user, p_unsigned);
+	PRINT_ATTRf(mmap2, p_unsigned);
+	PRINT_ATTRf(comm_exec, p_unsigned);
+	PRINT_ATTRf(use_clockid, p_unsigned);
+
+	PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned);
+	PRINT_ATTRf(bp_type, p_unsigned);
+	PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex);
+	PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex);
+	PRINT_ATTRf(sample_regs_user, p_hex);
+	PRINT_ATTRf(sample_stack_user, p_unsigned);
+	PRINT_ATTRf(clockid, p_signed);
+	PRINT_ATTRf(sample_regs_intr, p_hex);
 
 	return ret;
 }
 
+static int __open_attr__fprintf(FILE *fp, const char *name, const char *val,
+				void *priv __attribute__((unused)))
+{
+	return fprintf(fp, "  %-32s %s\n", name, val);
+}
+
 static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
 			      struct thread_map *threads)
 {
@@ -1062,6 +1154,12 @@ static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
 	}
 
 fallback_missing_features:
+	if (perf_missing_features.clockid_wrong)
+		evsel->attr.clockid = CLOCK_MONOTONIC; /* should always work */
+	if (perf_missing_features.clockid) {
+		evsel->attr.use_clockid = 0;
+		evsel->attr.clockid = 0;
+	}
 	if (perf_missing_features.cloexec)
 		flags &= ~(unsigned long)PERF_FLAG_FD_CLOEXEC;
 	if (perf_missing_features.mmap2)
@@ -1072,8 +1170,12 @@ retry_sample_id:
 	if (perf_missing_features.sample_id_all)
 		evsel->attr.sample_id_all = 0;
 
-	if (verbose >= 2)
-		perf_event_attr__fprintf(&evsel->attr, stderr);
+	if (verbose >= 2) {
+		fprintf(stderr, "%.60s\n", graph_dotted_line);
+		fprintf(stderr, "perf_event_attr:\n");
+		perf_event_attr__fprintf(stderr, &evsel->attr, __open_attr__fprintf, NULL);
+		fprintf(stderr, "%.60s\n", graph_dotted_line);
+	}
 
 	for (cpu = 0; cpu < cpus->nr; cpu++) {
 
@@ -1099,6 +1201,17 @@ retry_open:
 				goto try_fallback;
 			}
 			set_rlimit = NO_CHANGE;
+
+			/*
+			 * If we succeeded but had to kill clockid, fail and
+			 * have perf_evsel__open_strerror() print us a nice
+			 * error.
+			 */
+			if (perf_missing_features.clockid ||
+			    perf_missing_features.clockid_wrong) {
+				err = -EINVAL;
+				goto out_close;
+			}
 		}
 	}
 
@@ -1132,7 +1245,17 @@ try_fallback:
 	if (err != -EINVAL || cpu > 0 || thread > 0)
 		goto out_close;
 
-	if (!perf_missing_features.cloexec && (flags & PERF_FLAG_FD_CLOEXEC)) {
+	/*
+	 * Must probe features in the order they were added to the
+	 * perf_event_attr interface.
+	 */
+	if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) {
+		perf_missing_features.clockid_wrong = true;
+		goto fallback_missing_features;
+	} else if (!perf_missing_features.clockid && evsel->attr.use_clockid) {
+		perf_missing_features.clockid = true;
+		goto fallback_missing_features;
+	} else if (!perf_missing_features.cloexec && (flags & PERF_FLAG_FD_CLOEXEC)) {
 		perf_missing_features.cloexec = true;
 		goto fallback_missing_features;
 	} else if (!perf_missing_features.mmap2 && evsel->attr.mmap2) {
@@ -1892,7 +2015,7 @@ u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
 		value = *(u32 *)ptr;
 		break;
 	case 8:
-		value = *(u64 *)ptr;
+		memcpy(&value, ptr, sizeof(u64));
 		break;
 	default:
 		return 0;
@@ -1933,62 +2056,9 @@ static int comma_fprintf(FILE *fp, bool *first, const char *fmt, ...)
 	return ret;
 }
 
-static int __if_fprintf(FILE *fp, bool *first, const char *field, u64 value)
-{
-	if (value == 0)
-		return 0;
-
-	return comma_fprintf(fp, first, " %s: %" PRIu64, field, value);
-}
-
-#define if_print(field) printed += __if_fprintf(fp, &first, #field, evsel->attr.field)
-
-struct bit_names {
-	int bit;
-	const char *name;
-};
-
-static int bits__fprintf(FILE *fp, const char *field, u64 value,
-			 struct bit_names *bits, bool *first)
-{
-	int i = 0, printed = comma_fprintf(fp, first, " %s: ", field);
-	bool first_bit = true;
-
-	do {
-		if (value & bits[i].bit) {
-			printed += fprintf(fp, "%s%s", first_bit ? "" : "|", bits[i].name);
-			first_bit = false;
-		}
-	} while (bits[++i].name != NULL);
-
-	return printed;
-}
-
-static int sample_type__fprintf(FILE *fp, bool *first, u64 value)
-{
-#define bit_name(n) { PERF_SAMPLE_##n, #n }
-	struct bit_names bits[] = {
-		bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
-		bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
-		bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
-		bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
-		bit_name(IDENTIFIER), bit_name(REGS_INTR),
-		{ .name = NULL, }
-	};
-#undef bit_name
-	return bits__fprintf(fp, "sample_type", value, bits, first);
-}
-
-static int read_format__fprintf(FILE *fp, bool *first, u64 value)
+static int __print_attr__fprintf(FILE *fp, const char *name, const char *val, void *priv)
 {
-#define bit_name(n) { PERF_FORMAT_##n, #n }
-	struct bit_names bits[] = {
-		bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
-		bit_name(ID), bit_name(GROUP),
-		{ .name = NULL, }
-	};
-#undef bit_name
-	return bits__fprintf(fp, "read_format", value, bits, first);
+	return comma_fprintf(fp, (bool *)priv, " %s: %s", name, val);
 }
 
 int perf_evsel__fprintf(struct perf_evsel *evsel,
@@ -2017,47 +2087,13 @@ int perf_evsel__fprintf(struct perf_evsel *evsel,
 
 	printed += fprintf(fp, "%s", perf_evsel__name(evsel));
 
-	if (details->verbose || details->freq) {
+	if (details->verbose) {
+		printed += perf_event_attr__fprintf(fp, &evsel->attr,
+						    __print_attr__fprintf, &first);
+	} else if (details->freq) {
 		printed += comma_fprintf(fp, &first, " sample_freq=%" PRIu64,
 					 (u64)evsel->attr.sample_freq);
 	}
-
-	if (details->verbose) {
-		if_print(type);
-		if_print(config);
-		if_print(config1);
-		if_print(config2);
-		if_print(size);
-		printed += sample_type__fprintf(fp, &first, evsel->attr.sample_type);
-		if (evsel->attr.read_format)
-			printed += read_format__fprintf(fp, &first, evsel->attr.read_format);
-		if_print(disabled);
-		if_print(inherit);
-		if_print(pinned);
-		if_print(exclusive);
-		if_print(exclude_user);
-		if_print(exclude_kernel);
-		if_print(exclude_hv);
-		if_print(exclude_idle);
-		if_print(mmap);
-		if_print(mmap2);
-		if_print(comm);
-		if_print(comm_exec);
-		if_print(freq);
-		if_print(inherit_stat);
-		if_print(enable_on_exec);
-		if_print(task);
-		if_print(watermark);
-		if_print(precise_ip);
-		if_print(mmap_data);
-		if_print(sample_id_all);
-		if_print(exclude_host);
-		if_print(exclude_guest);
-		if_print(__reserved_1);
-		if_print(wakeup_events);
-		if_print(bp_type);
-		if_print(branch_sample_type);
-	}
 out:
 	fputc('\n', fp);
 	return ++printed;
@@ -2135,6 +2171,12 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
 	"The PMU counters are busy/taken by another profiler.\n"
 	"We found oprofile daemon running, please stop it and try again.");
 		break;
+	case EINVAL:
+		if (perf_missing_features.clockid)
+			return scnprintf(msg, size, "clockid feature not supported.");
+		if (perf_missing_features.clockid_wrong)
+			return scnprintf(msg, size, "wrong clockid (%d).", clockid);
+		break;
 	default:
 		break;
 	}