Merge branch 'for-4.16/block' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "This is the main pull request for block IO related changes for the
  4.16 kernel. Nothing major in this pull request, but a good amount of
  improvements and fixes all over the map. This contains:

   - BFQ improvements, fixes, and cleanups from Angelo, Chiara, and
     Paolo.

   - Support for SMR zones for deadline and mq-deadline from Damien and
     Christoph.

   - Set of fixes for bcache by way of Michael Lyle, including fixes
     from himself, Kent, Rui, Tang, and Coly.

   - Series from Matias for lightnvm with fixes from Hans Holmberg,
     Javier, and Matias. Mostly centered around pblk, and the removing
     rrpc 1.2 in preparation for supporting 2.0.

   - A couple of NVMe pull requests from Christoph. Nothing major in
     here, just fixes and cleanups, and support for command tracing from
     Johannes.

   - Support for blk-throttle for tracking reads and writes separately.
     From Joseph Qi. A few cleanups/fixes also for blk-throttle from
     Weiping.

   - Series from Mike Snitzer that enables dm to register its queue more
     logically, something that's alwways been problematic on dm since
     it's a stacked device.

   - Series from Ming cleaning up some of the bio accessor use, in
     preparation for supporting multipage bvecs.

   - Various fixes from Ming closing up holes around queue mapping and
     quiescing.

   - BSD partition fix from Richard Narron, fixing a problem where we
     can't mount newer (10/11) FreeBSD partitions.

   - Series from Tejun reworking blk-mq timeout handling. The previous
     scheme relied on atomic bits, but it had races where we would think
     a request had timed out if it to reused at the wrong time.

   - null_blk now supports faking timeouts, to enable us to better
     exercise and test that functionality separately. From me.

   - Kill the separate atomic poll bit in the request struct. After
     this, we don't use the atomic bits on blk-mq anymore at all. From
     me.

   - sgl_alloc/free helpers from Bart.

   - Heavily contended tag case scalability improvement from me.

   - Various little fixes and cleanups from Arnd, Bart, Corentin,
     Douglas, Eryu, Goldwyn, and myself"

* 'for-4.16/block' of git://git.kernel.dk/linux-block: (186 commits)
  block: remove smart1,2.h
  nvme: add tracepoint for nvme_complete_rq
  nvme: add tracepoint for nvme_setup_cmd
  nvme-pci: introduce RECONNECTING state to mark initializing procedure
  nvme-rdma: remove redundant boolean for inline_data
  nvme: don't free uuid pointer before printing it
  nvme-pci: Suspend queues after deleting them
  bsg: use pr_debug instead of hand crafted macros
  blk-mq-debugfs: don't allow write on attributes with seq_operations set
  nvme-pci: Fix queue double allocations
  block: Set BIO_TRACE_COMPLETION on new bio during split
  blk-throttle: use queue_is_rq_based
  block: Remove kblockd_schedule_delayed_work{,_on}()
  blk-mq: Avoid that blk_mq_delay_run_hw_queue() introduces unintended delays
  blk-mq: Rename blk_mq_request_direct_issue() into blk_mq_request_issue_directly()
  lib/scatterlist: Fix chaining support in sgl_alloc_order()
  blk-throttle: track read and write request individually
  block: add bdev_read_only() checks to common helpers
  block: fail op_is_write() requests to read-only partitions
  blk-throttle: export io_serviced_recursive, io_service_bytes_recursive
  ...

1 files changed, 165 insertions, 0 deletions

diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h
new file mode 100644
index 000000000000..ea91fccd1bc0
--- /dev/null
+++ b/drivers/nvme/host/trace.h
@@ -0,0 +1,165 @@
+/*
+ * NVM Express device driver tracepoints
+ * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM nvme
+
+#if !defined(_TRACE_NVME_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_NVME_H
+
+#include <linux/nvme.h>
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#include "nvme.h"
+
+#define nvme_admin_opcode_name(opcode)	{ opcode, #opcode }
+#define show_admin_opcode_name(val)					\
+	__print_symbolic(val,						\
+		nvme_admin_opcode_name(nvme_admin_delete_sq),		\
+		nvme_admin_opcode_name(nvme_admin_create_sq),		\
+		nvme_admin_opcode_name(nvme_admin_get_log_page),	\
+		nvme_admin_opcode_name(nvme_admin_delete_cq),		\
+		nvme_admin_opcode_name(nvme_admin_create_cq),		\
+		nvme_admin_opcode_name(nvme_admin_identify),		\
+		nvme_admin_opcode_name(nvme_admin_abort_cmd),		\
+		nvme_admin_opcode_name(nvme_admin_set_features),	\
+		nvme_admin_opcode_name(nvme_admin_get_features),	\
+		nvme_admin_opcode_name(nvme_admin_async_event),		\
+		nvme_admin_opcode_name(nvme_admin_ns_mgmt),		\
+		nvme_admin_opcode_name(nvme_admin_activate_fw),		\
+		nvme_admin_opcode_name(nvme_admin_download_fw),		\
+		nvme_admin_opcode_name(nvme_admin_ns_attach),		\
+		nvme_admin_opcode_name(nvme_admin_keep_alive),		\
+		nvme_admin_opcode_name(nvme_admin_directive_send),	\
+		nvme_admin_opcode_name(nvme_admin_directive_recv),	\
+		nvme_admin_opcode_name(nvme_admin_dbbuf),		\
+		nvme_admin_opcode_name(nvme_admin_format_nvm),		\
+		nvme_admin_opcode_name(nvme_admin_security_send),	\
+		nvme_admin_opcode_name(nvme_admin_security_recv),	\
+		nvme_admin_opcode_name(nvme_admin_sanitize_nvm))
+
+const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
+				       u8 *cdw10);
+#define __parse_nvme_admin_cmd(opcode, cdw10) \
+	nvme_trace_parse_admin_cmd(p, opcode, cdw10)
+
+#define nvme_opcode_name(opcode)	{ opcode, #opcode }
+#define show_opcode_name(val)					\
+	__print_symbolic(val,					\
+		nvme_opcode_name(nvme_cmd_flush),		\
+		nvme_opcode_name(nvme_cmd_write),		\
+		nvme_opcode_name(nvme_cmd_read),		\
+		nvme_opcode_name(nvme_cmd_write_uncor),		\
+		nvme_opcode_name(nvme_cmd_compare),		\
+		nvme_opcode_name(nvme_cmd_write_zeroes),	\
+		nvme_opcode_name(nvme_cmd_dsm),			\
+		nvme_opcode_name(nvme_cmd_resv_register),	\
+		nvme_opcode_name(nvme_cmd_resv_report),		\
+		nvme_opcode_name(nvme_cmd_resv_acquire),	\
+		nvme_opcode_name(nvme_cmd_resv_release))
+
+const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
+				     u8 *cdw10);
+#define __parse_nvme_cmd(opcode, cdw10) \
+	nvme_trace_parse_nvm_cmd(p, opcode, cdw10)
+
+TRACE_EVENT(nvme_setup_admin_cmd,
+	    TP_PROTO(struct nvme_command *cmd),
+	    TP_ARGS(cmd),
+	    TP_STRUCT__entry(
+		    __field(u8, opcode)
+		    __field(u8, flags)
+		    __field(u16, cid)
+		    __field(u64, metadata)
+		    __array(u8, cdw10, 24)
+	    ),
+	    TP_fast_assign(
+		    __entry->opcode = cmd->common.opcode;
+		    __entry->flags = cmd->common.flags;
+		    __entry->cid = cmd->common.command_id;
+		    __entry->metadata = le64_to_cpu(cmd->common.metadata);
+		    memcpy(__entry->cdw10, cmd->common.cdw10,
+			   sizeof(__entry->cdw10));
+	    ),
+	    TP_printk(" cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
+		      __entry->cid, __entry->flags, __entry->metadata,
+		      show_admin_opcode_name(__entry->opcode),
+		      __parse_nvme_admin_cmd(__entry->opcode, __entry->cdw10))
+);
+
+
+TRACE_EVENT(nvme_setup_nvm_cmd,
+	    TP_PROTO(int qid, struct nvme_command *cmd),
+	    TP_ARGS(qid, cmd),
+	    TP_STRUCT__entry(
+		    __field(int, qid)
+		    __field(u8, opcode)
+		    __field(u8, flags)
+		    __field(u16, cid)
+		    __field(u32, nsid)
+		    __field(u64, metadata)
+		    __array(u8, cdw10, 24)
+	    ),
+	    TP_fast_assign(
+		    __entry->qid = qid;
+		    __entry->opcode = cmd->common.opcode;
+		    __entry->flags = cmd->common.flags;
+		    __entry->cid = cmd->common.command_id;
+		    __entry->nsid = le32_to_cpu(cmd->common.nsid);
+		    __entry->metadata = le64_to_cpu(cmd->common.metadata);
+		    memcpy(__entry->cdw10, cmd->common.cdw10,
+			   sizeof(__entry->cdw10));
+	    ),
+	    TP_printk("qid=%d, nsid=%u, cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
+		      __entry->qid, __entry->nsid, __entry->cid,
+		      __entry->flags, __entry->metadata,
+		      show_opcode_name(__entry->opcode),
+		      __parse_nvme_cmd(__entry->opcode, __entry->cdw10))
+);
+
+TRACE_EVENT(nvme_complete_rq,
+	    TP_PROTO(struct request *req),
+	    TP_ARGS(req),
+	    TP_STRUCT__entry(
+		    __field(int, qid)
+		    __field(int, cid)
+		    __field(u64, result)
+		    __field(u8, retries)
+		    __field(u8, flags)
+		    __field(u16, status)
+	    ),
+	    TP_fast_assign(
+		    __entry->qid = req->q->id;
+		    __entry->cid = req->tag;
+		    __entry->result = le64_to_cpu(nvme_req(req)->result.u64);
+		    __entry->retries = nvme_req(req)->retries;
+		    __entry->flags = nvme_req(req)->flags;
+		    __entry->status = nvme_req(req)->status;
+	    ),
+	    TP_printk("cmdid=%u, qid=%d, res=%llu, retries=%u, flags=0x%x, status=%u",
+		      __entry->cid, __entry->qid, __entry->result,
+		      __entry->retries, __entry->flags, __entry->status)
+
+);
+
+#endif /* _TRACE_NVME_H */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>