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nvme-trace: support for fabrics commands in host-side 

This patch introduces fabrics commands tracing feature from host-side.
This patch does not include any changes for the previous host-side
tracing, but just add fabrics commands parsing in cmd=() format.

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
[hch: fixed some whitespace damage]
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Minwoo Im 2019-06-12 21:45:31 +09:00 committed by Christoph Hellwig
parent 26f2990d85
commit ad795e47cd
3 changed files with 94 additions and 9 deletions
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63
drivers/nvme/host/trace.c
View File

@ -135,6 +135,69 @@ const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p,
}
}
static const char *nvme_trace_fabrics_property_set(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 attrib = spc[0];
u32 ofst = get_unaligned_le32(spc + 4);
u64 value = get_unaligned_le64(spc + 8);
trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx",
attrib, ofst, value);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_connect(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u16 recfmt = get_unaligned_le16(spc);
u16 qid = get_unaligned_le16(spc + 2);
u16 sqsize = get_unaligned_le16(spc + 4);
u8 cattr = spc[6];
u32 kato = get_unaligned_le32(spc + 8);
trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u",
recfmt, qid, sqsize, cattr, kato);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_property_get(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 attrib = spc[0];
u32 ofst = get_unaligned_le32(spc + 4);
trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_common(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
trace_seq_printf(p, "spcecific=%*ph", 24, spc);
trace_seq_putc(p, 0);
return ret;
}
const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p,
u8 fctype, u8 *spc)
{
switch (fctype) {
case nvme_fabrics_type_property_set:
return nvme_trace_fabrics_property_set(p, spc);
case nvme_fabrics_type_connect:
return nvme_trace_fabrics_connect(p, spc);
case nvme_fabrics_type_property_get:
return nvme_trace_fabrics_property_get(p, spc);
default:
return nvme_trace_fabrics_common(p, spc);
}
}
const char *nvme_trace_disk_name(struct trace_seq *p, char *name)
{
const char *ret = trace_seq_buffer_ptr(p);

20
drivers/nvme/host/trace.h
View File

@ -20,11 +20,15 @@ const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
u8 *cdw10);
const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
u8 *cdw10);
const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p, u8 fctype,
u8 *spc);
#define parse_nvme_cmd(qid, opcode, cdw10) \
(qid ? \
nvme_trace_parse_nvm_cmd(p, opcode, cdw10) : \
nvme_trace_parse_admin_cmd(p, opcode, cdw10))
#define parse_nvme_cmd(qid, opcode, fctype, cdw10) \
((opcode) == nvme_fabrics_command ? \
nvme_trace_parse_fabrics_cmd(p, fctype, cdw10) : \
((qid) ? \
nvme_trace_parse_nvm_cmd(p, opcode, cdw10) : \
nvme_trace_parse_admin_cmd(p, opcode, cdw10)))
const char *nvme_trace_disk_name(struct trace_seq *p, char *name);
#define __print_disk_name(name) \
@ -49,6 +53,7 @@ TRACE_EVENT(nvme_setup_cmd,
__field(int, qid)
__field(u8, opcode)
__field(u8, flags)
__field(u8, fctype)
__field(u16, cid)
__field(u32, nsid)
__field(u64, metadata)
@ -62,6 +67,7 @@ TRACE_EVENT(nvme_setup_cmd,
__entry->cid = cmd->common.command_id;
__entry->nsid = le32_to_cpu(cmd->common.nsid);
__entry->metadata = le64_to_cpu(cmd->common.metadata);
__entry->fctype = cmd->fabrics.fctype;
__assign_disk_name(__entry->disk, req->rq_disk);
memcpy(__entry->cdw10, &cmd->common.cdw10,
sizeof(__entry->cdw10));
@ -70,8 +76,10 @@ TRACE_EVENT(nvme_setup_cmd,
__entry->ctrl_id, __print_disk_name(__entry->disk),
__entry->qid, __entry->cid, __entry->nsid,
__entry->flags, __entry->metadata,
show_opcode_name(__entry->qid, __entry->opcode),
parse_nvme_cmd(__entry->qid, __entry->opcode, __entry->cdw10))
show_opcode_name(__entry->qid, __entry->opcode,
__entry->fctype),
parse_nvme_cmd(__entry->qid, __entry->opcode,
__entry->fctype, __entry->cdw10))
);
TRACE_EVENT(nvme_complete_rq,

20
include/linux/nvme.h
View File

@ -836,9 +836,6 @@ enum nvme_admin_opcode {
nvme_admin_opcode_name(nvme_admin_security_recv), \
nvme_admin_opcode_name(nvme_admin_sanitize_nvm))
#define show_opcode_name(qid, opcode) \
(qid ? show_nvm_opcode_name(opcode) : show_admin_opcode_name(opcode))
enum {
NVME_QUEUE_PHYS_CONTIG = (1 << 0),
NVME_CQ_IRQ_ENABLED = (1 << 1),
@ -1053,6 +1050,23 @@ enum nvmf_capsule_command {
nvme_fabrics_type_property_get = 0x04,
};
#define nvme_fabrics_type_name(type) { type, #type }
#define show_fabrics_type_name(type) \
__print_symbolic(type, \
nvme_fabrics_type_name(nvme_fabrics_type_property_set), \
nvme_fabrics_type_name(nvme_fabrics_type_connect), \
nvme_fabrics_type_name(nvme_fabrics_type_property_get))
/*
* If not fabrics command, fctype will be ignored.
*/
#define show_opcode_name(qid, opcode, fctype) \
((opcode) == nvme_fabrics_command ? \
show_fabrics_type_name(fctype) : \
((qid) ? \
show_nvm_opcode_name(opcode) : \
show_admin_opcode_name(opcode)))
struct nvmf_common_command {
__u8 opcode;
__u8 resv1;