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, 157 insertions, 0 deletions

diff --git a/block/partitions/mac.c b/block/partitions/mac.c
new file mode 100644
index 000000000..df03ca428
--- /dev/null
+++ b/block/partitions/mac.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  fs/partitions/mac.c
+ *
+ *  Code extracted from drivers/block/genhd.c
+ *  Copyright (C) 1991-1998  Linus Torvalds
+ *  Re-organised Feb 1998 Russell King
+ */
+
+#include <linux/ctype.h>
+#include "check.h"
+#include "mac.h"
+
+#ifdef CONFIG_PPC_PMAC
+#include <asm/machdep.h>
+extern void note_bootable_part(dev_t dev, int part, int goodness);
+#endif
+
+/*
+ * Code to understand MacOS partition tables.
+ */
+
+#ifdef CONFIG_PPC_PMAC
+static inline void mac_fix_string(char *stg, int len)
+{
+	int i;
+
+	for (i = len - 1; i >= 0 && stg[i] == ' '; i--)
+		stg[i] = 0;
+}
+#endif
+
+int mac_partition(struct parsed_partitions *state)
+{
+	Sector sect;
+	unsigned char *data;
+	int slot, blocks_in_map;
+	unsigned secsize, datasize, partoffset;
+#ifdef CONFIG_PPC_PMAC
+	int found_root = 0;
+	int found_root_goodness = 0;
+#endif
+	struct mac_partition *part;
+	struct mac_driver_desc *md;
+
+	/* Get 0th block and look at the first partition map entry. */
+	md = read_part_sector(state, 0, &sect);
+	if (!md)
+		return -1;
+	if (be16_to_cpu(md->signature) != MAC_DRIVER_MAGIC) {
+		put_dev_sector(sect);
+		return 0;
+	}
+	secsize = be16_to_cpu(md->block_size);
+	put_dev_sector(sect);
+
+	/*
+	 * If the "block size" is not a power of 2, things get weird - we might
+	 * end up with a partition straddling a sector boundary, so we wouldn't
+	 * be able to read a partition entry with read_part_sector().
+	 * Real block sizes are probably (?) powers of two, so just require
+	 * that.
+	 */
+	if (!is_power_of_2(secsize))
+		return -1;
+	datasize = round_down(secsize, 512);
+	data = read_part_sector(state, datasize / 512, &sect);
+	if (!data)
+		return -1;
+	partoffset = secsize % 512;
+	if (partoffset + sizeof(*part) > datasize) {
+		put_dev_sector(sect);
+		return -1;
+	}
+	part = (struct mac_partition *) (data + partoffset);
+	if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC) {
+		put_dev_sector(sect);
+		return 0;		/* not a MacOS disk */
+	}
+	blocks_in_map = be32_to_cpu(part->map_count);
+	if (blocks_in_map < 0 || blocks_in_map >= DISK_MAX_PARTS) {
+		put_dev_sector(sect);
+		return 0;
+	}
+
+	if (blocks_in_map >= state->limit)
+		blocks_in_map = state->limit - 1;
+
+	seq_buf_puts(&state->pp_buf, " [mac]");
+	for (slot = 1; slot <= blocks_in_map; ++slot) {
+		int pos = slot * secsize;
+		put_dev_sector(sect);
+		data = read_part_sector(state, pos/512, &sect);
+		if (!data)
+			return -1;
+		part = (struct mac_partition *) (data + pos%512);
+		if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC)
+			break;
+		put_partition(state, slot,
+			be32_to_cpu(part->start_block) * (secsize/512),
+			be32_to_cpu(part->block_count) * (secsize/512));
+
+		if (!strncasecmp(part->type, "Linux_RAID", 10))
+			state->parts[slot].flags = ADDPART_FLAG_RAID;
+#ifdef CONFIG_PPC_PMAC
+		/*
+		 * If this is the first bootable partition, tell the
+		 * setup code, in case it wants to make this the root.
+		 */
+		if (machine_is(powermac)) {
+			int goodness = 0;
+
+			mac_fix_string(part->processor, 16);
+			mac_fix_string(part->name, 32);
+			mac_fix_string(part->type, 32);					
+		    
+			if ((be32_to_cpu(part->status) & MAC_STATUS_BOOTABLE)
+			    && strcasecmp(part->processor, "powerpc") == 0)
+				goodness++;
+
+			if (strcasecmp(part->type, "Apple_UNIX_SVR2") == 0
+			    || (strncasecmp(part->type, "Linux", 5) == 0
+			        && strcasecmp(part->type, "Linux_swap") != 0)) {
+				int i, l;
+
+				goodness++;
+				l = strnlen(part->name, sizeof(part->name));
+				if (strncmp(part->name, "/", sizeof(part->name)) == 0)
+					goodness++;
+				for (i = 0; i <= l - 4; ++i) {
+					if (strncasecmp(part->name + i, "root",
+						     4) == 0) {
+						goodness += 2;
+						break;
+					}
+				}
+				if (strncasecmp(part->name, "swap", 4) == 0)
+					goodness--;
+			}
+
+			if (goodness > found_root_goodness) {
+				found_root = slot;
+				found_root_goodness = goodness;
+			}
+		}
+#endif /* CONFIG_PPC_PMAC */
+	}
+#ifdef CONFIG_PPC_PMAC
+	if (found_root_goodness)
+		note_bootable_part(state->disk->part0->bd_dev, found_root,
+				   found_root_goodness);
+#endif
+
+	put_dev_sector(sect);
+	seq_buf_puts(&state->pp_buf, "\n");
+	return 1;
+}