scftorture: Count single_rpc offline failures in statistics outputgrafted

scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop.  As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.

Add the missing accumulation so that the printed value reflects the
actual counts.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/security/landlock/audit.h b/security/landlock/audit.h
new file mode 100644
index 000000000..620f8a242
--- /dev/null
+++ b/security/landlock/audit.h
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Landlock - Audit helpers
+ *
+ * Copyright © 2023-2025 Microsoft Corporation
+ */
+
+#ifndef _SECURITY_LANDLOCK_AUDIT_H
+#define _SECURITY_LANDLOCK_AUDIT_H
+
+#include <linux/audit.h>
+#include <linux/lsm_audit.h>
+
+#include "access.h"
+#include "cred.h"
+
+enum landlock_request_type {
+	LANDLOCK_REQUEST_PTRACE = 1,
+	LANDLOCK_REQUEST_FS_CHANGE_TOPOLOGY,
+	LANDLOCK_REQUEST_FS_ACCESS,
+	LANDLOCK_REQUEST_NET_ACCESS,
+	LANDLOCK_REQUEST_SCOPE_ABSTRACT_UNIX_SOCKET,
+	LANDLOCK_REQUEST_SCOPE_SIGNAL,
+};
+
+/*
+ * We should be careful to only use a variable of this type for
+ * landlock_log_denial().  This way, the compiler can remove it entirely if
+ * CONFIG_AUDIT is not set.
+ */
+struct landlock_request {
+	/* Mandatory fields. */
+	enum landlock_request_type type;
+	struct common_audit_data audit;
+
+	/**
+	 * layer_plus_one: First layer level that denies the request + 1.  The
+	 * extra one is useful to detect uninitialized field.
+	 */
+	size_t layer_plus_one;
+
+	/* Required field for configurable access control. */
+	access_mask_t access;
+
+	/* Required fields for requests with layer masks. */
+	const struct layer_masks *layer_masks;
+
+	/* Required fields for requests with deny masks. */
+	const access_mask_t all_existing_optional_access;
+	deny_masks_t deny_masks;
+	optional_access_t quiet_optional_accesses;
+};
+
+#ifdef CONFIG_AUDIT
+
+void landlock_log_drop_domain(const struct landlock_hierarchy *const hierarchy);
+
+void landlock_log_denial(const struct landlock_cred_security *const subject,
+			 const struct landlock_request *const request);
+
+#else /* CONFIG_AUDIT */
+
+static inline void
+landlock_log_drop_domain(const struct landlock_hierarchy *const hierarchy)
+{
+}
+
+static inline void
+landlock_log_denial(const struct landlock_cred_security *const subject,
+		    const struct landlock_request *const request)
+{
+}
+
+#endif /* CONFIG_AUDIT */
+
+#endif /* _SECURITY_LANDLOCK_AUDIT_H */