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, 99 insertions, 0 deletions

diff --git a/security/landlock/errata.h b/security/landlock/errata.h
new file mode 100644
index 000000000..8e626acca
--- /dev/null
+++ b/security/landlock/errata.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Landlock - Errata information
+ *
+ * Copyright © 2025 Microsoft Corporation
+ */
+
+#ifndef _SECURITY_LANDLOCK_ERRATA_H
+#define _SECURITY_LANDLOCK_ERRATA_H
+
+#include <linux/init.h>
+
+struct landlock_erratum {
+	const int abi;
+	const u8 number;
+};
+
+/* clang-format off */
+#define LANDLOCK_ERRATUM(NUMBER) \
+	{ \
+		.abi = LANDLOCK_ERRATA_ABI, \
+		.number = NUMBER, \
+	},
+/* clang-format on */
+
+/*
+ * Some fixes may require user space to check if they are applied on the running
+ * kernel before using a specific feature.  For instance, this applies when a
+ * restriction was previously too restrictive and is now getting relaxed (for
+ * compatibility or semantic reasons).  However, non-visible changes for
+ * legitimate use (e.g. security fixes) do not require an erratum.
+ */
+static const struct landlock_erratum landlock_errata_init[] __initconst = {
+
+/*
+ * Only Sparse may not implement __has_include.  If a compiler does not
+ * implement __has_include, a warning will be printed at boot time (see
+ * setup.c).
+ */
+#ifdef __has_include
+
+#define LANDLOCK_ERRATA_ABI 1
+#if __has_include("errata/abi-1.h")
+#include "errata/abi-1.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
+#define LANDLOCK_ERRATA_ABI 2
+#if __has_include("errata/abi-2.h")
+#include "errata/abi-2.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
+#define LANDLOCK_ERRATA_ABI 3
+#if __has_include("errata/abi-3.h")
+#include "errata/abi-3.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
+#define LANDLOCK_ERRATA_ABI 4
+#if __has_include("errata/abi-4.h")
+#include "errata/abi-4.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
+#define LANDLOCK_ERRATA_ABI 5
+#if __has_include("errata/abi-5.h")
+#include "errata/abi-5.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
+#define LANDLOCK_ERRATA_ABI 6
+#if __has_include("errata/abi-6.h")
+#include "errata/abi-6.h"
+#endif
+#undef LANDLOCK_ERRATA_ABI
+
+/*
+ * For each new erratum, we need to include all the ABI files up to the impacted
+ * ABI to make all potential future intermediate errata easy to backport.
+ *
+ * If such change involves more than one ABI addition, then it must be in a
+ * dedicated commit with the same Fixes tag as used for the actual fix.
+ *
+ * Each commit creating a new security/landlock/errata/abi-*.h file must have a
+ * Depends-on tag to reference the commit that previously added the line to
+ * include this new file, except if the original Fixes tag is enough.
+ *
+ * Each erratum must be documented in its related ABI file, and a dedicated
+ * commit must update Documentation/userspace-api/landlock.rst to include this
+ * erratum.  This commit will not be backported.
+ */
+
+#endif
+
+	{}
+};
+
+#endif /* _SECURITY_LANDLOCK_ERRATA_H */