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nvme: add tracepoint for nvme_setup_cmd
Add tracepoints for nvme_setup_cmd() for tracing admin and/or nvm commands. Examples of the two tracepoints are as follows for trace_nvme_setup_admin_cmd(): kworker/u8:0-5 [003] .... 2.998792: nvme_setup_admin_cmd: cmdid=14, flags=0x0, meta=0x0, cmd=(nvme_admin_create_cq cqid=1, qsize=1023, cq_flags=0x3, irq_vector=0) and trace_nvme_setup_nvm_cmd(): dd-205 [001] .... 3.503929: nvme_setup_nvm_cmd: qid=1, nsid=1, cmdid=989, flags=0x0, meta=0x0, cmd=(nvme_cmd_read slba=4096, len=2047, ctrl=0x0, dsmgmt=0, reftag=0) Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Johannes Thumshirn
Christoph Hellwig
parent
ad70062cdb
commit
3d030e41d9
@ -1,4 +1,7 @@
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# SPDX-License-Identifier: GPL-2.0
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ccflags-y += -I$(src)
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obj-$(CONFIG_NVME_CORE) += nvme-core.o
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obj-$(CONFIG_BLK_DEV_NVME) += nvme.o
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obj-$(CONFIG_NVME_FABRICS) += nvme-fabrics.o
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@ -6,6 +9,7 @@ obj-$(CONFIG_NVME_RDMA) += nvme-rdma.o
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obj-$(CONFIG_NVME_FC) += nvme-fc.o
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nvme-core-y := core.o
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nvme-core-$(CONFIG_TRACING) += trace.o
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nvme-core-$(CONFIG_NVME_MULTIPATH) += multipath.o
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nvme-core-$(CONFIG_NVM) += lightnvm.o
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@ -29,6 +29,9 @@
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#include <linux/pm_qos.h>
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#include <asm/unaligned.h>
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#define CREATE_TRACE_POINTS
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#include "trace.h"
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#include "nvme.h"
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#include "fabrics.h"
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@ -628,6 +631,10 @@ blk_status_t nvme_setup_cmd(struct nvme_ns *ns, struct request *req,
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}
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cmd->common.command_id = req->tag;
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if (ns)
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trace_nvme_setup_nvm_cmd(req->q->id, cmd);
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else
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trace_nvme_setup_admin_cmd(cmd);
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return ret;
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}
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EXPORT_SYMBOL_GPL(nvme_setup_cmd);
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130
drivers/nvme/host/trace.c
Normal file
130
drivers/nvme/host/trace.c
Normal file
@ -0,0 +1,130 @@
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/*
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* NVM Express device driver tracepoints
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* Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <asm/unaligned.h>
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#include "trace.h"
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static const char *nvme_trace_create_sq(struct trace_seq *p, u8 *cdw10)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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u16 sqid = get_unaligned_le16(cdw10);
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u16 qsize = get_unaligned_le16(cdw10 + 2);
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u16 sq_flags = get_unaligned_le16(cdw10 + 4);
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u16 cqid = get_unaligned_le16(cdw10 + 6);
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trace_seq_printf(p, "sqid=%u, qsize=%u, sq_flags=0x%x, cqid=%u",
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sqid, qsize, sq_flags, cqid);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *nvme_trace_create_cq(struct trace_seq *p, u8 *cdw10)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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u16 cqid = get_unaligned_le16(cdw10);
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u16 qsize = get_unaligned_le16(cdw10 + 2);
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u16 cq_flags = get_unaligned_le16(cdw10 + 4);
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u16 irq_vector = get_unaligned_le16(cdw10 + 6);
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trace_seq_printf(p, "cqid=%u, qsize=%u, cq_flags=0x%x, irq_vector=%u",
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cqid, qsize, cq_flags, irq_vector);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *nvme_trace_admin_identify(struct trace_seq *p, u8 *cdw10)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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u8 cns = cdw10[0];
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u16 ctrlid = get_unaligned_le16(cdw10 + 2);
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trace_seq_printf(p, "cns=%u, ctrlid=%u", cns, ctrlid);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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u64 slba = get_unaligned_le64(cdw10);
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u16 length = get_unaligned_le16(cdw10 + 8);
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u16 control = get_unaligned_le16(cdw10 + 10);
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u32 dsmgmt = get_unaligned_le32(cdw10 + 12);
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u32 reftag = get_unaligned_le32(cdw10 + 16);
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trace_seq_printf(p,
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"slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
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slba, length, control, dsmgmt, reftag);
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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trace_seq_printf(p, "nr=%u, attributes=%u",
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get_unaligned_le32(cdw10),
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get_unaligned_le32(cdw10 + 4));
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trace_seq_putc(p, 0);
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return ret;
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}
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static const char *nvme_trace_common(struct trace_seq *p, u8 *cdw10)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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trace_seq_printf(p, "cdw10=%*ph", 24, cdw10);
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trace_seq_putc(p, 0);
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return ret;
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}
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const char *nvme_trace_parse_admin_cmd(struct trace_seq *p,
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u8 opcode, u8 *cdw10)
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{
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switch (opcode) {
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case nvme_admin_create_sq:
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return nvme_trace_create_sq(p, cdw10);
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case nvme_admin_create_cq:
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return nvme_trace_create_cq(p, cdw10);
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case nvme_admin_identify:
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return nvme_trace_admin_identify(p, cdw10);
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default:
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return nvme_trace_common(p, cdw10);
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}
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}
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const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p,
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u8 opcode, u8 *cdw10)
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{
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switch (opcode) {
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case nvme_cmd_read:
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case nvme_cmd_write:
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case nvme_cmd_write_zeroes:
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return nvme_trace_read_write(p, cdw10);
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case nvme_cmd_dsm:
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return nvme_trace_dsm(p, cdw10);
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default:
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return nvme_trace_common(p, cdw10);
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}
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}
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140
drivers/nvme/host/trace.h
Normal file
140
drivers/nvme/host/trace.h
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@ -0,0 +1,140 @@
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/*
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* NVM Express device driver tracepoints
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* Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM nvme
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#if !defined(_TRACE_NVME_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_NVME_H
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#include <linux/nvme.h>
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#include <linux/tracepoint.h>
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#include <linux/trace_seq.h>
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#include "nvme.h"
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#define nvme_admin_opcode_name(opcode) { opcode, #opcode }
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#define show_admin_opcode_name(val) \
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__print_symbolic(val, \
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nvme_admin_opcode_name(nvme_admin_delete_sq), \
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nvme_admin_opcode_name(nvme_admin_create_sq), \
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nvme_admin_opcode_name(nvme_admin_get_log_page), \
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nvme_admin_opcode_name(nvme_admin_delete_cq), \
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nvme_admin_opcode_name(nvme_admin_create_cq), \
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nvme_admin_opcode_name(nvme_admin_identify), \
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nvme_admin_opcode_name(nvme_admin_abort_cmd), \
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nvme_admin_opcode_name(nvme_admin_set_features), \
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nvme_admin_opcode_name(nvme_admin_get_features), \
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nvme_admin_opcode_name(nvme_admin_async_event), \
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nvme_admin_opcode_name(nvme_admin_ns_mgmt), \
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nvme_admin_opcode_name(nvme_admin_activate_fw), \
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nvme_admin_opcode_name(nvme_admin_download_fw), \
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nvme_admin_opcode_name(nvme_admin_ns_attach), \
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nvme_admin_opcode_name(nvme_admin_keep_alive), \
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nvme_admin_opcode_name(nvme_admin_directive_send), \
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nvme_admin_opcode_name(nvme_admin_directive_recv), \
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nvme_admin_opcode_name(nvme_admin_dbbuf), \
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nvme_admin_opcode_name(nvme_admin_format_nvm), \
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nvme_admin_opcode_name(nvme_admin_security_send), \
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nvme_admin_opcode_name(nvme_admin_security_recv), \
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nvme_admin_opcode_name(nvme_admin_sanitize_nvm))
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const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
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u8 *cdw10);
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#define __parse_nvme_admin_cmd(opcode, cdw10) \
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nvme_trace_parse_admin_cmd(p, opcode, cdw10)
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#define nvme_opcode_name(opcode) { opcode, #opcode }
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#define show_opcode_name(val) \
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__print_symbolic(val, \
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nvme_opcode_name(nvme_cmd_flush), \
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nvme_opcode_name(nvme_cmd_write), \
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nvme_opcode_name(nvme_cmd_read), \
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nvme_opcode_name(nvme_cmd_write_uncor), \
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nvme_opcode_name(nvme_cmd_compare), \
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nvme_opcode_name(nvme_cmd_write_zeroes), \
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nvme_opcode_name(nvme_cmd_dsm), \
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nvme_opcode_name(nvme_cmd_resv_register), \
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nvme_opcode_name(nvme_cmd_resv_report), \
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nvme_opcode_name(nvme_cmd_resv_acquire), \
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nvme_opcode_name(nvme_cmd_resv_release))
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const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
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u8 *cdw10);
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#define __parse_nvme_cmd(opcode, cdw10) \
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nvme_trace_parse_nvm_cmd(p, opcode, cdw10)
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TRACE_EVENT(nvme_setup_admin_cmd,
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TP_PROTO(struct nvme_command *cmd),
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TP_ARGS(cmd),
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TP_STRUCT__entry(
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__field(u8, opcode)
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__field(u8, flags)
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__field(u16, cid)
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__field(u64, metadata)
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__array(u8, cdw10, 24)
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),
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TP_fast_assign(
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__entry->opcode = cmd->common.opcode;
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__entry->flags = cmd->common.flags;
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__entry->cid = cmd->common.command_id;
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__entry->metadata = le64_to_cpu(cmd->common.metadata);
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memcpy(__entry->cdw10, cmd->common.cdw10,
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sizeof(__entry->cdw10));
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),
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TP_printk(" cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
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__entry->cid, __entry->flags, __entry->metadata,
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show_admin_opcode_name(__entry->opcode),
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__parse_nvme_admin_cmd(__entry->opcode, __entry->cdw10))
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);
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TRACE_EVENT(nvme_setup_nvm_cmd,
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TP_PROTO(int qid, struct nvme_command *cmd),
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TP_ARGS(qid, cmd),
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TP_STRUCT__entry(
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__field(int, qid)
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__field(u8, opcode)
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__field(u8, flags)
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__field(u16, cid)
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__field(u32, nsid)
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__field(u64, metadata)
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__array(u8, cdw10, 24)
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),
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TP_fast_assign(
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__entry->qid = qid;
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__entry->opcode = cmd->common.opcode;
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__entry->flags = cmd->common.flags;
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__entry->cid = cmd->common.command_id;
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__entry->nsid = le32_to_cpu(cmd->common.nsid);
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__entry->metadata = le64_to_cpu(cmd->common.metadata);
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memcpy(__entry->cdw10, cmd->common.cdw10,
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sizeof(__entry->cdw10));
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),
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TP_printk("qid=%d, nsid=%u, cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
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__entry->qid, __entry->nsid, __entry->cid,
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__entry->flags, __entry->metadata,
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show_opcode_name(__entry->opcode),
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__parse_nvme_cmd(__entry->opcode, __entry->cdw10))
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);
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#endif /* _TRACE_NVME_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE trace
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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