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>

6 files changed, 219 insertions, 0 deletions

diff --git a/tools/arch/sparc/include/asm/barrier.h b/tools/arch/sparc/include/asm/barrier.h
new file mode 100644
index 000000000..95d161846
--- /dev/null
+++ b/tools/arch/sparc/include/asm/barrier.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef ___TOOLS_LINUX_ASM_SPARC_BARRIER_H
+#define ___TOOLS_LINUX_ASM_SPARC_BARRIER_H
+#if defined(__sparc__) && defined(__arch64__)
+#include "barrier_64.h"
+#else
+#include "barrier_32.h"
+#endif
+#endif
diff --git a/tools/arch/sparc/include/asm/barrier_32.h b/tools/arch/sparc/include/asm/barrier_32.h
new file mode 100644
index 000000000..cc19ed1dd
--- /dev/null
+++ b/tools/arch/sparc/include/asm/barrier_32.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __TOOLS_PERF_SPARC_BARRIER_H
+#define __TOOLS_PERF_SPARC_BARRIER_H
+
+#include <asm-generic/barrier.h>
+
+#endif /* !(__TOOLS_PERF_SPARC_BARRIER_H) */
diff --git a/tools/arch/sparc/include/asm/barrier_64.h b/tools/arch/sparc/include/asm/barrier_64.h
new file mode 100644
index 000000000..cfb0fdc8c
--- /dev/null
+++ b/tools/arch/sparc/include/asm/barrier_64.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __TOOLS_LINUX_SPARC64_BARRIER_H
+#define __TOOLS_LINUX_SPARC64_BARRIER_H
+
+/* Copied from the kernel sources to tools/:
+ *
+ * These are here in an effort to more fully work around Spitfire Errata
+ * #51.  Essentially, if a memory barrier occurs soon after a mispredicted
+ * branch, the chip can stop executing instructions until a trap occurs.
+ * Therefore, if interrupts are disabled, the chip can hang forever.
+ *
+ * It used to be believed that the memory barrier had to be right in the
+ * delay slot, but a case has been traced recently wherein the memory barrier
+ * was one instruction after the branch delay slot and the chip still hung.
+ * The offending sequence was the following in sym_wakeup_done() of the
+ * sym53c8xx_2 driver:
+ *
+ *	call	sym_ccb_from_dsa, 0
+ *	 movge	%icc, 0, %l0
+ *	brz,pn	%o0, .LL1303
+ *	 mov	%o0, %l2
+ *	membar	#LoadLoad
+ *
+ * The branch has to be mispredicted for the bug to occur.  Therefore, we put
+ * the memory barrier explicitly into a "branch always, predicted taken"
+ * delay slot to avoid the problem case.
+ */
+#define membar_safe(type) \
+do {	__asm__ __volatile__("ba,pt	%%xcc, 1f\n\t" \
+			     " membar	" type "\n" \
+			     "1:\n" \
+			     : : : "memory"); \
+} while (0)
+
+/* The kernel always executes in TSO memory model these days,
+ * and furthermore most sparc64 chips implement more stringent
+ * memory ordering than required by the specifications.
+ */
+#define mb()	membar_safe("#StoreLoad")
+#define rmb()	__asm__ __volatile__("":::"memory")
+#define wmb()	__asm__ __volatile__("":::"memory")
+
+#define smp_store_release(p, v)			\
+do {						\
+	barrier();				\
+	WRITE_ONCE(*p, v);			\
+} while (0)
+
+#define smp_load_acquire(p)			\
+({						\
+	typeof(*p) ___p1 = READ_ONCE(*p);	\
+	barrier();				\
+	___p1;					\
+})
+
+#endif /* !(__TOOLS_LINUX_SPARC64_BARRIER_H) */
diff --git a/tools/arch/sparc/include/uapi/asm/bitsperlong.h b/tools/arch/sparc/include/uapi/asm/bitsperlong.h
new file mode 100644
index 000000000..3b4e61740
--- /dev/null
+++ b/tools/arch/sparc/include/uapi/asm/bitsperlong.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __ASM_ALPHA_BITSPERLONG_H
+#define __ASM_ALPHA_BITSPERLONG_H
+
+#if defined(__sparc__) && defined(__arch64__)
+#define __BITS_PER_LONG 64
+#else
+#define __BITS_PER_LONG 32
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* __ASM_ALPHA_BITSPERLONG_H */
diff --git a/tools/arch/sparc/include/uapi/asm/errno.h b/tools/arch/sparc/include/uapi/asm/errno.h
new file mode 100644
index 000000000..71940ec91
--- /dev/null
+++ b/tools/arch/sparc/include/uapi/asm/errno.h
@@ -0,0 +1,122 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _SPARC_ERRNO_H
+#define _SPARC_ERRNO_H
+
+/* These match the SunOS error numbering scheme. */
+
+#include <asm-generic/errno-base.h>
+
+#define	EWOULDBLOCK	EAGAIN	/* Operation would block */
+#define	EINPROGRESS	36	/* Operation now in progress */
+#define	EALREADY	37	/* Operation already in progress */
+#define	ENOTSOCK	38	/* Socket operation on non-socket */
+#define	EDESTADDRREQ	39	/* Destination address required */
+#define	EMSGSIZE	40	/* Message too long */
+#define	EPROTOTYPE	41	/* Protocol wrong type for socket */
+#define	ENOPROTOOPT	42	/* Protocol not available */
+#define	EPROTONOSUPPORT	43	/* Protocol not supported */
+#define	ESOCKTNOSUPPORT	44	/* Socket type not supported */
+#define	EOPNOTSUPP	45	/* Op not supported on transport endpoint */
+#define	EPFNOSUPPORT	46	/* Protocol family not supported */
+#define	EAFNOSUPPORT	47	/* Address family not supported by protocol */
+#define	EADDRINUSE	48	/* Address already in use */
+#define	EADDRNOTAVAIL	49	/* Cannot assign requested address */
+#define	ENETDOWN	50	/* Network is down */
+#define	ENETUNREACH	51	/* Network is unreachable */
+#define	ENETRESET	52	/* Net dropped connection because of reset */
+#define	ECONNABORTED	53	/* Software caused connection abort */
+#define	ECONNRESET	54	/* Connection reset by peer */
+#define	ENOBUFS		55	/* No buffer space available */
+#define	EISCONN		56	/* Transport endpoint is already connected */
+#define	ENOTCONN	57	/* Transport endpoint is not connected */
+#define	ESHUTDOWN	58	/* No send after transport endpoint shutdown */
+#define	ETOOMANYREFS	59	/* Too many references: cannot splice */
+#define	ETIMEDOUT	60	/* Connection timed out */
+#define	ECONNREFUSED	61	/* Connection refused */
+#define	ELOOP		62	/* Too many symbolic links encountered */
+#define	ENAMETOOLONG	63	/* File name too long */
+#define	EHOSTDOWN	64	/* Host is down */
+#define	EHOSTUNREACH	65	/* No route to host */
+#define	ENOTEMPTY	66	/* Directory not empty */
+#define EPROCLIM        67      /* SUNOS: Too many processes */
+#define	EUSERS		68	/* Too many users */
+#define	EDQUOT		69	/* Quota exceeded */
+#define	ESTALE		70	/* Stale file handle */
+#define	EREMOTE		71	/* Object is remote */
+#define	ENOSTR		72	/* Device not a stream */
+#define	ETIME		73	/* Timer expired */
+#define	ENOSR		74	/* Out of streams resources */
+#define	ENOMSG		75	/* No message of desired type */
+#define	EBADMSG		76	/* Not a data message */
+#define	EFSBADCRC	EBADMSG	/* Bad CRC detected */
+#define	EIDRM		77	/* Identifier removed */
+#define	EDEADLK		78	/* Resource deadlock would occur */
+#define	ENOLCK		79	/* No record locks available */
+#define	ENONET		80	/* Machine is not on the network */
+#define ERREMOTE        81      /* SunOS: Too many lvls of remote in path */
+#define	ENOLINK		82	/* Link has been severed */
+#define	EADV		83	/* Advertise error */
+#define	ESRMNT		84	/* Srmount error */
+#define	ECOMM		85      /* Communication error on send */
+#define	EPROTO		86	/* Protocol error */
+#define	EMULTIHOP	87	/* Multihop attempted */
+#define	EDOTDOT		88	/* RFS specific error */
+#define	EREMCHG		89	/* Remote address changed */
+#define	ENOSYS		90	/* Function not implemented */
+
+/* The rest have no SunOS equivalent. */
+#define	ESTRPIPE	91	/* Streams pipe error */
+#define	EOVERFLOW	92	/* Value too large for defined data type */
+#define	EBADFD		93	/* File descriptor in bad state */
+#define	ECHRNG		94	/* Channel number out of range */
+#define	EL2NSYNC	95	/* Level 2 not synchronized */
+#define	EL3HLT		96	/* Level 3 halted */
+#define	EL3RST		97	/* Level 3 reset */
+#define	ELNRNG		98	/* Link number out of range */
+#define	EUNATCH		99	/* Protocol driver not attached */
+#define	ENOCSI		100	/* No CSI structure available */
+#define	EL2HLT		101	/* Level 2 halted */
+#define	EBADE		102	/* Invalid exchange */
+#define	EBADR		103	/* Invalid request descriptor */
+#define	EXFULL		104	/* Exchange full */
+#define	ENOANO		105	/* No anode */
+#define	EBADRQC		106	/* Invalid request code */
+#define	EBADSLT		107	/* Invalid slot */
+#define	EDEADLOCK	108	/* File locking deadlock error */
+#define	EBFONT		109	/* Bad font file format */
+#define	ELIBEXEC	110	/* Cannot exec a shared library directly */
+#define	ENODATA		111	/* No data available */
+#define	ELIBBAD		112	/* Accessing a corrupted shared library */
+#define	ENOPKG		113	/* Package not installed */
+#define	ELIBACC		114	/* Can not access a needed shared library */
+#define	ENOTUNIQ	115	/* Name not unique on network */
+#define	ERESTART	116	/* Interrupted syscall should be restarted */
+#define	EUCLEAN		117	/* Structure needs cleaning */
+#define	EFSCORRUPTED	EUCLEAN	/* Filesystem is corrupted */
+#define	ENOTNAM		118	/* Not a XENIX named type file */
+#define	ENAVAIL		119	/* No XENIX semaphores available */
+#define	EISNAM		120	/* Is a named type file */
+#define	EREMOTEIO	121	/* Remote I/O error */
+#define	EILSEQ		122	/* Illegal byte sequence */
+#define	ELIBMAX		123	/* Atmpt to link in too many shared libs */
+#define	ELIBSCN		124	/* .lib section in a.out corrupted */
+
+#define	ENOMEDIUM	125	/* No medium found */
+#define	EMEDIUMTYPE	126	/* Wrong medium type */
+#define	ECANCELED	127	/* Operation Cancelled */
+#define	ENOKEY		128	/* Required key not available */
+#define	EKEYEXPIRED	129	/* Key has expired */
+#define	EKEYREVOKED	130	/* Key has been revoked */
+#define	EKEYREJECTED	131	/* Key was rejected by service */
+
+/* for robust mutexes */
+#define	EOWNERDEAD	132	/* Owner died */
+#define	ENOTRECOVERABLE	133	/* State not recoverable */
+
+#define	ERFKILL		134	/* Operation not possible due to RF-kill */
+
+#define EHWPOISON	135	/* Memory page has hardware error */
+
+#define EFTYPE		136	/* Wrong file type for the intended operation */
+
+#endif
diff --git a/tools/arch/sparc/include/uapi/asm/mman.h b/tools/arch/sparc/include/uapi/asm/mman.h
new file mode 100644
index 000000000..7b94dccc8
--- /dev/null
+++ b/tools/arch/sparc/include/uapi/asm/mman.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef TOOLS_ARCH_SPARC_UAPI_ASM_MMAN_FIX_H
+#define TOOLS_ARCH_SPARC_UAPI_ASM_MMAN_FIX_H
+#define MAP_DENYWRITE	0x0800
+#define MAP_EXECUTABLE	0x1000
+#define MAP_GROWSDOWN	0x0200
+#define MAP_LOCKED      0x100
+#define MAP_NORESERVE   0x40
+#include <uapi/asm-generic/mman-common.h>
+/* MAP_32BIT is undefined on sparc, fix it for perf */
+#define MAP_32BIT	0
+#endif