[Virtio-fs] [PATCH 1/2][RFC] virtio-fs: add ftrace events

[Masayoshi Mizuma]

From: Masayoshi Mizuma <m.mizuma at jp.fujitsu.com>

Introduce the following ftrace events. 

  - virtiofs_request_dispatched
  - virtiofs_request_done
  - virtiofs_hiprio_request_dispatched
  - virtiofs_hiprio_request_done

Signed-off-by: Masayoshi Mizuma <m.mizuma at jp.fujitsu.com>
---
 include/trace/events/virtiofs.h | 195 ++++++++++++++++++++++++++++++++
 1 file changed, 195 insertions(+)
 create mode 100644 include/trace/events/virtiofs.h

diff --git a/include/trace/events/virtiofs.h b/include/trace/events/virtiofs.h
new file mode 100644
index 000000000..50269d7de
--- /dev/null
+++ b/include/trace/events/virtiofs.h
@@ -0,0 +1,195 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM virtiofs
+
+#if !defined(_TRACE_VIRTIOFS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_VIRTIOFS_H
+
+#include <linux/tracepoint.h>
+#include <uapi/linux/fuse.h>
+
+#define fuse_opcode_name(opcode)	{ opcode, #opcode }
+#define show_opcode_name(val)				\
+	__print_symbolic(val,				\
+		fuse_opcode_name(FUSE_LOOKUP),		\
+		fuse_opcode_name(FUSE_FORGET),		\
+		fuse_opcode_name(FUSE_GETATTR),		\
+		fuse_opcode_name(FUSE_SETATTR),		\
+		fuse_opcode_name(FUSE_READLINK),	\
+		fuse_opcode_name(FUSE_SYMLINK),		\
+		fuse_opcode_name(FUSE_MKNOD),		\
+		fuse_opcode_name(FUSE_MKDIR),		\
+		fuse_opcode_name(FUSE_UNLINK),		\
+		fuse_opcode_name(FUSE_RMDIR),		\
+		fuse_opcode_name(FUSE_RENAME),		\
+		fuse_opcode_name(FUSE_LINK),		\
+		fuse_opcode_name(FUSE_OPEN),		\
+		fuse_opcode_name(FUSE_READ),		\
+		fuse_opcode_name(FUSE_WRITE),		\
+		fuse_opcode_name(FUSE_STATFS),		\
+		fuse_opcode_name(FUSE_RELEASE),		\
+		fuse_opcode_name(FUSE_FSYNC),		\
+		fuse_opcode_name(FUSE_SETXATTR),	\
+		fuse_opcode_name(FUSE_GETXATTR),	\
+		fuse_opcode_name(FUSE_LISTXATTR),	\
+		fuse_opcode_name(FUSE_REMOVEXATTR),	\
+		fuse_opcode_name(FUSE_FLUSH),		\
+		fuse_opcode_name(FUSE_INIT),		\
+		fuse_opcode_name(FUSE_OPENDIR),		\
+		fuse_opcode_name(FUSE_READDIR),		\
+		fuse_opcode_name(FUSE_RELEASEDIR),	\
+		fuse_opcode_name(FUSE_FSYNCDIR),	\
+		fuse_opcode_name(FUSE_GETLK),		\
+		fuse_opcode_name(FUSE_SETLK),		\
+		fuse_opcode_name(FUSE_SETLKW),		\
+		fuse_opcode_name(FUSE_ACCESS),		\
+		fuse_opcode_name(FUSE_CREATE),		\
+		fuse_opcode_name(FUSE_INTERRUPT),	\
+		fuse_opcode_name(FUSE_BMAP),		\
+		fuse_opcode_name(FUSE_DESTROY),		\
+		fuse_opcode_name(FUSE_IOCTL),		\
+		fuse_opcode_name(FUSE_POLL),		\
+		fuse_opcode_name(FUSE_NOTIFY_REPLY),	\
+		fuse_opcode_name(FUSE_BATCH_FORGET),	\
+		fuse_opcode_name(FUSE_FALLOCATE),	\
+		fuse_opcode_name(FUSE_READDIRPLUS),	\
+		fuse_opcode_name(FUSE_RENAME2),		\
+		fuse_opcode_name(FUSE_LSEEK),		\
+		fuse_opcode_name(FUSE_COPY_FILE_RANGE),	\
+		fuse_opcode_name(FUSE_SETUPMAPPING),	\
+		fuse_opcode_name(FUSE_REMOVEMAPPING))
+
+#define show_req_flag(flags) __print_flags(flags, "|",	\
+	{ (1UL << FR_ISREPLY),		"ISREPLY"},	\
+	{ (1UL << FR_FORCE),		"FORCE"},	\
+	{ (1UL << FR_BACKGROUND),	"BACKGROUND"},	\
+	{ (1UL << FR_WAITING),		"WAITING"},	\
+	{ (1UL << FR_ABORTED),		"ABORTED"},	\
+	{ (1UL << FR_INTERRUPTED),	"INTERRUPTED"},	\
+	{ (1UL << FR_LOCKED),		"LOCKED"},	\
+	{ (1UL << FR_PENDING),		"PENDING"},	\
+	{ (1UL << FR_SENT),		"SENT"},	\
+	{ (1UL << FR_FINISHED),		"FINISHED"},	\
+	{ (1UL << FR_PRIVATE),		"PRIVATE"})
+
+TRACE_EVENT(virtiofs_request_dispatched,
+
+	TP_PROTO(uint32_t opcode, uint64_t unique, uint64_t nodeid,
+		uint32_t inlen, unsigned long flags, bool notify),
+
+	TP_ARGS(opcode, unique, nodeid, inlen, flags, notify),
+
+	TP_STRUCT__entry(
+		__field(uint32_t,	opcode)
+		__field(uint64_t,	unique)
+		__field(uint64_t,	nodeid)
+		__field(uint32_t,	inlen)
+		__field(unsigned long,	flags)
+		__field(bool,		notify)
+	),
+
+	TP_fast_assign(
+		__entry->opcode	=	opcode;
+		__entry->unique	=	unique;
+		__entry->nodeid	=	nodeid;
+		__entry->inlen	=	inlen;
+		__entry->flags	=	flags;
+		__entry->notify	=	notify;
+	),
+
+	TP_printk("opcode %s unique %#llx nodeid %#llx in.len %u flags %s notify %d\n",
+			show_opcode_name(__entry->opcode),
+			__entry->unique, __entry->nodeid,
+			__entry->inlen, show_req_flag(__entry->flags),
+			__entry->notify)
+);
+
+TRACE_EVENT(virtiofs_request_done,
+
+	TP_PROTO(uint32_t opcode, uint64_t unique, uint64_t nodeid,
+		uint32_t inlen, unsigned long flags),
+
+	TP_ARGS(opcode, unique, nodeid, inlen, flags),
+
+	TP_STRUCT__entry(
+		__field(uint32_t,	opcode)
+		__field(uint64_t,	unique)
+		__field(uint64_t,	nodeid)
+		__field(uint32_t,	inlen)
+		__field(unsigned long,	flags)
+	),
+
+	TP_fast_assign(
+		__entry->opcode	=	opcode;
+		__entry->unique	=	unique;
+		__entry->nodeid	=	nodeid;
+		__entry->inlen	=	inlen;
+		__entry->flags	=	flags;
+	),
+
+	TP_printk("opcode %s unique %#llx nodeid %#llx in.len %u flags %s\n",
+			show_opcode_name(__entry->opcode),
+			__entry->unique, __entry->nodeid,
+			__entry->inlen, show_req_flag(__entry->flags))
+);
+
+TRACE_EVENT(virtiofs_hiprio_request_dispatched,
+
+	TP_PROTO(uint32_t opcode, uint64_t unique, uint64_t nodeid,
+		uint32_t inlen, bool notify),
+
+	TP_ARGS(opcode, unique, nodeid, inlen, notify),
+
+	TP_STRUCT__entry(
+		__field(uint32_t,	opcode)
+		__field(uint64_t,	unique)
+		__field(uint64_t,	nodeid)
+		__field(uint32_t,	inlen)
+		__field(bool,		notify)
+	),
+
+	TP_fast_assign(
+		__entry->opcode	=	opcode;
+		__entry->unique	=	unique;
+		__entry->nodeid	=	nodeid;
+		__entry->inlen	=	inlen;
+		__entry->notify	=	notify;
+	),
+
+	TP_printk("opcode %s unique %#llx nodeid %#llx in.len %u notify %d\n",
+			show_opcode_name(__entry->opcode),
+			__entry->unique, __entry->nodeid,
+			__entry->inlen,  __entry->notify)
+);
+
+TRACE_EVENT(virtiofs_hiprio_request_done,
+
+	TP_PROTO(uint32_t opcode, uint64_t unique, uint64_t nodeid,
+		uint32_t inlen),
+
+	TP_ARGS(opcode, unique, nodeid, inlen),
+
+	TP_STRUCT__entry(
+		__field(uint32_t,	opcode)
+		__field(uint64_t,	unique)
+		__field(uint64_t,	nodeid)
+		__field(uint32_t,	inlen)
+	),
+
+	TP_fast_assign(
+		__entry->opcode	=	opcode;
+		__entry->unique	=	unique;
+		__entry->nodeid	=	nodeid;
+		__entry->inlen	=	inlen;
+	),
+
+	TP_printk("opcode %s unique %#llx nodeid %#llx in.len %u\n",
+			show_opcode_name(__entry->opcode),
+			__entry->unique, __entry->nodeid,
+			__entry->inlen)
+);
+
+#endif /* _TRACE_VIRTIOFS_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
-- 
2.18.1