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, 149 insertions, 0 deletions

diff --git a/lib/crypto/sparc/aes.h b/lib/crypto/sparc/aes.h
new file mode 100644
index 000000000..e354aa507
--- /dev/null
+++ b/lib/crypto/sparc/aes.h
@@ -0,0 +1,149 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * AES accelerated using the sparc64 aes opcodes
+ *
+ * Copyright (C) 2008, Intel Corp.
+ * Copyright (c) 2010, Intel Corporation.
+ * Copyright 2026 Google LLC
+ */
+
+#include <asm/fpumacro.h>
+#include <asm/opcodes.h>
+#include <asm/pstate.h>
+#include <asm/elf.h>
+
+static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_aes_opcodes);
+
+EXPORT_SYMBOL_GPL(aes_sparc64_key_expand);
+EXPORT_SYMBOL_GPL(aes_sparc64_load_encrypt_keys_128);
+EXPORT_SYMBOL_GPL(aes_sparc64_load_encrypt_keys_192);
+EXPORT_SYMBOL_GPL(aes_sparc64_load_encrypt_keys_256);
+EXPORT_SYMBOL_GPL(aes_sparc64_load_decrypt_keys_128);
+EXPORT_SYMBOL_GPL(aes_sparc64_load_decrypt_keys_192);
+EXPORT_SYMBOL_GPL(aes_sparc64_load_decrypt_keys_256);
+EXPORT_SYMBOL_GPL(aes_sparc64_ecb_encrypt_128);
+EXPORT_SYMBOL_GPL(aes_sparc64_ecb_encrypt_192);
+EXPORT_SYMBOL_GPL(aes_sparc64_ecb_encrypt_256);
+EXPORT_SYMBOL_GPL(aes_sparc64_ecb_decrypt_128);
+EXPORT_SYMBOL_GPL(aes_sparc64_ecb_decrypt_192);
+EXPORT_SYMBOL_GPL(aes_sparc64_ecb_decrypt_256);
+EXPORT_SYMBOL_GPL(aes_sparc64_cbc_encrypt_128);
+EXPORT_SYMBOL_GPL(aes_sparc64_cbc_encrypt_192);
+EXPORT_SYMBOL_GPL(aes_sparc64_cbc_encrypt_256);
+EXPORT_SYMBOL_GPL(aes_sparc64_cbc_decrypt_128);
+EXPORT_SYMBOL_GPL(aes_sparc64_cbc_decrypt_192);
+EXPORT_SYMBOL_GPL(aes_sparc64_cbc_decrypt_256);
+EXPORT_SYMBOL_GPL(aes_sparc64_ctr_crypt_128);
+EXPORT_SYMBOL_GPL(aes_sparc64_ctr_crypt_192);
+EXPORT_SYMBOL_GPL(aes_sparc64_ctr_crypt_256);
+
+void aes_sparc64_encrypt_128(const u64 *key, const u32 *input, u32 *output);
+void aes_sparc64_encrypt_192(const u64 *key, const u32 *input, u32 *output);
+void aes_sparc64_encrypt_256(const u64 *key, const u32 *input, u32 *output);
+void aes_sparc64_decrypt_128(const u64 *key, const u32 *input, u32 *output);
+void aes_sparc64_decrypt_192(const u64 *key, const u32 *input, u32 *output);
+void aes_sparc64_decrypt_256(const u64 *key, const u32 *input, u32 *output);
+
+static void aes_preparekey_arch(union aes_enckey_arch *k,
+				union aes_invkey_arch *inv_k,
+				const u8 *in_key, int key_len, int nrounds)
+{
+	if (static_branch_likely(&have_aes_opcodes)) {
+		u32 aligned_key[AES_MAX_KEY_SIZE / 4];
+
+		if (IS_ALIGNED((uintptr_t)in_key, 4)) {
+			aes_sparc64_key_expand((const u32 *)in_key,
+					       k->sparc_rndkeys, key_len);
+		} else {
+			memcpy(aligned_key, in_key, key_len);
+			aes_sparc64_key_expand(aligned_key,
+					       k->sparc_rndkeys, key_len);
+			memzero_explicit(aligned_key, key_len);
+		}
+		/*
+		 * Note that nothing needs to be written to inv_k (if it's
+		 * non-NULL) here, since the SPARC64 assembly code uses
+		 * k->sparc_rndkeys for both encryption and decryption.
+		 */
+	} else {
+		aes_expandkey_generic(k->rndkeys,
+				      inv_k ? inv_k->inv_rndkeys : NULL,
+				      in_key, key_len);
+	}
+}
+
+static void aes_sparc64_encrypt(const struct aes_enckey *key,
+				const u32 *input, u32 *output)
+{
+	if (key->len == AES_KEYSIZE_128)
+		aes_sparc64_encrypt_128(key->k.sparc_rndkeys, input, output);
+	else if (key->len == AES_KEYSIZE_192)
+		aes_sparc64_encrypt_192(key->k.sparc_rndkeys, input, output);
+	else
+		aes_sparc64_encrypt_256(key->k.sparc_rndkeys, input, output);
+}
+
+static void aes_encrypt_arch(const struct aes_enckey *key,
+			     u8 out[AES_BLOCK_SIZE],
+			     const u8 in[AES_BLOCK_SIZE])
+{
+	u32 bounce_buf[AES_BLOCK_SIZE / 4];
+
+	if (static_branch_likely(&have_aes_opcodes)) {
+		if (IS_ALIGNED((uintptr_t)in | (uintptr_t)out, 4)) {
+			aes_sparc64_encrypt(key, (const u32 *)in, (u32 *)out);
+		} else {
+			memcpy(bounce_buf, in, AES_BLOCK_SIZE);
+			aes_sparc64_encrypt(key, bounce_buf, bounce_buf);
+			memcpy(out, bounce_buf, AES_BLOCK_SIZE);
+		}
+	} else {
+		aes_encrypt_generic(key->k.rndkeys, key->nrounds, out, in);
+	}
+}
+
+static void aes_sparc64_decrypt(const struct aes_key *key,
+				const u32 *input, u32 *output)
+{
+	if (key->len == AES_KEYSIZE_128)
+		aes_sparc64_decrypt_128(key->k.sparc_rndkeys, input, output);
+	else if (key->len == AES_KEYSIZE_192)
+		aes_sparc64_decrypt_192(key->k.sparc_rndkeys, input, output);
+	else
+		aes_sparc64_decrypt_256(key->k.sparc_rndkeys, input, output);
+}
+
+static void aes_decrypt_arch(const struct aes_key *key,
+			     u8 out[AES_BLOCK_SIZE],
+			     const u8 in[AES_BLOCK_SIZE])
+{
+	u32 bounce_buf[AES_BLOCK_SIZE / 4];
+
+	if (static_branch_likely(&have_aes_opcodes)) {
+		if (IS_ALIGNED((uintptr_t)in | (uintptr_t)out, 4)) {
+			aes_sparc64_decrypt(key, (const u32 *)in, (u32 *)out);
+		} else {
+			memcpy(bounce_buf, in, AES_BLOCK_SIZE);
+			aes_sparc64_decrypt(key, bounce_buf, bounce_buf);
+			memcpy(out, bounce_buf, AES_BLOCK_SIZE);
+		}
+	} else {
+		aes_decrypt_generic(key->inv_k.inv_rndkeys, key->nrounds,
+				    out, in);
+	}
+}
+
+#define aes_mod_init_arch aes_mod_init_arch
+static void aes_mod_init_arch(void)
+{
+	unsigned long cfr;
+
+	if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO))
+		return;
+
+	__asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
+	if (!(cfr & CFR_AES))
+		return;
+
+	static_branch_enable(&have_aes_opcodes);
+}