workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/tools/perf/util/arm-spe.h b/tools/perf/util/arm-spe.h
new file mode 100644
index 000000000..3966df185
--- /dev/null
+++ b/tools/perf/util/arm-spe.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Arm Statistical Profiling Extensions (SPE) support
+ * Copyright (c) 2017-2018, Arm Ltd.
+ */
+
+#ifndef INCLUDE__PERF_ARM_SPE_H__
+#define INCLUDE__PERF_ARM_SPE_H__
+
+#define ARM_SPE_PMU_NAME "arm_spe_"
+
+enum {
+	ARM_SPE_PMU_TYPE,
+	ARM_SPE_PER_CPU_MMAPS,
+	ARM_SPE_AUXTRACE_V1_PRIV_MAX,
+};
+
+#define ARM_SPE_AUXTRACE_V1_PRIV_SIZE	\
+	(ARM_SPE_AUXTRACE_V1_PRIV_MAX * sizeof(u64))
+
+enum {
+	/*
+	 * The old metadata format (defined above) does not include a
+	 * field for version number. Version 1 is reserved and starts
+	 * from version 2.
+	 */
+	ARM_SPE_HEADER_VERSION,
+	/* Number of sizeof(u64) */
+	ARM_SPE_HEADER_SIZE,
+	/* PMU type shared by CPUs */
+	ARM_SPE_PMU_TYPE_V2,
+	/* Number of CPUs */
+	ARM_SPE_CPUS_NUM,
+	ARM_SPE_AUXTRACE_PRIV_MAX,
+};
+
+enum {
+	/* Magic number */
+	ARM_SPE_MAGIC,
+	/* CPU logical number in system */
+	ARM_SPE_CPU,
+	/* Number of parameters */
+	ARM_SPE_CPU_NR_PARAMS,
+	/* CPU MIDR */
+	ARM_SPE_CPU_MIDR,
+	/* Associated PMU type */
+	ARM_SPE_CPU_PMU_TYPE,
+	/* Minimal interval */
+	ARM_SPE_CAP_MIN_IVAL,
+	/* Event filter */
+	ARM_SPE_CAP_EVENT_FILTER,
+	ARM_SPE_CPU_PRIV_MAX,
+};
+
+#define ARM_SPE_HEADER_CURRENT_VERSION	2
+
+
+union perf_event;
+struct perf_session;
+struct perf_pmu;
+
+struct auxtrace_record *arm_spe_recording_init(int *err,
+					       struct perf_pmu *arm_spe_pmu);
+
+int arm_spe_process_auxtrace_info(union perf_event *event,
+				  struct perf_session *session);
+
+void arm_spe_pmu_default_config(const struct perf_pmu *arm_spe_pmu,
+				struct perf_event_attr *attr);
+
+#endif