Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/drivers/scsi/scsi_debugfs.c b/drivers/scsi/scsi_debugfs.c
new file mode 100644
index 0000000000..f795848b31
--- /dev/null
+++ b/drivers/scsi/scsi_debugfs.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/bitops.h>
+#include <linux/seq_file.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_dbg.h>
+#include <scsi/scsi_host.h>
+#include "scsi_debugfs.h"
+
+#define SCSI_CMD_FLAG_NAME(name)[const_ilog2(SCMD_##name)] = #name
+static const char *const scsi_cmd_flags[] = {
+	SCSI_CMD_FLAG_NAME(TAGGED),
+	SCSI_CMD_FLAG_NAME(INITIALIZED),
+	SCSI_CMD_FLAG_NAME(LAST),
+};
+#undef SCSI_CMD_FLAG_NAME
+
+static int scsi_flags_show(struct seq_file *m, const unsigned long flags,
+			   const char *const *flag_name, int flag_name_count)
+{
+	bool sep = false;
+	int i;
+
+	for_each_set_bit(i, &flags, BITS_PER_LONG) {
+		if (sep)
+			seq_puts(m, "|");
+		sep = true;
+		if (i < flag_name_count && flag_name[i])
+			seq_puts(m, flag_name[i]);
+		else
+			seq_printf(m, "%d", i);
+	}
+	return 0;
+}
+
+void scsi_show_rq(struct seq_file *m, struct request *rq)
+{
+	struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq), *cmd2;
+	struct Scsi_Host *shost = cmd->device->host;
+	int alloc_ms = jiffies_to_msecs(jiffies - cmd->jiffies_at_alloc);
+	int timeout_ms = jiffies_to_msecs(rq->timeout);
+	const char *list_info = NULL;
+	char buf[80] = "(?)";
+
+	spin_lock_irq(shost->host_lock);
+	list_for_each_entry(cmd2, &shost->eh_abort_list, eh_entry) {
+		if (cmd == cmd2) {
+			list_info = "on eh_abort_list";
+			goto unlock;
+		}
+	}
+	list_for_each_entry(cmd2, &shost->eh_cmd_q, eh_entry) {
+		if (cmd == cmd2) {
+			list_info = "on eh_cmd_q";
+			goto unlock;
+		}
+	}
+unlock:
+	spin_unlock_irq(shost->host_lock);
+
+	__scsi_format_command(buf, sizeof(buf), cmd->cmnd, cmd->cmd_len);
+	seq_printf(m, ", .cmd=%s, .retries=%d, .allowed=%d, .result = %#x, %s%s.flags=",
+		   buf, cmd->retries, cmd->allowed, cmd->result,
+		   list_info ? : "", list_info ? ", " : "");
+	scsi_flags_show(m, cmd->flags, scsi_cmd_flags,
+			ARRAY_SIZE(scsi_cmd_flags));
+	seq_printf(m, ", .timeout=%d.%03d, allocated %d.%03d s ago",
+		   timeout_ms / 1000, timeout_ms % 1000,
+		   alloc_ms / 1000, alloc_ms % 1000);
+}