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[Qemu-block] [PATCH v4 9/9] block: add trace events for io_uring
From: |
Aarushi Mehta |
Subject: |
[Qemu-block] [PATCH v4 9/9] block: add trace events for io_uring |
Date: |
Mon, 3 Jun 2019 18:08:23 +0530 |
Signed-off-by: Aarushi Mehta <address@hidden>
---
block/io_uring.c | 14 ++++++++++++--
block/trace-events | 8 ++++++++
2 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/block/io_uring.c b/block/io_uring.c
index 536a9fbe87..e92e45ccca 100644
--- a/block/io_uring.c
+++ b/block/io_uring.c
@@ -17,6 +17,7 @@
#include "block/raw-aio.h"
#include "qemu/coroutine.h"
#include "qapi/error.h"
+#include "trace.h"
#define MAX_EVENTS 128
@@ -192,12 +193,15 @@ static int ioq_submit(LuringState *s)
void luring_io_plug(BlockDriverState *bs, LuringState *s)
{
+ trace_luring_io_plug();
s->io_q.plugged++;
}
void luring_io_unplug(BlockDriverState *bs, LuringState *s)
{
assert(s->io_q.plugged);
+ trace_luring_io_unplug(s->io_q.blocked, s->io_q.plugged,
+ s->io_q.in_queue, s->io_q.in_flight);
if (--s->io_q.plugged == 0 &&
!s->io_q.blocked && s->io_q.in_queue > 0) {
ioq_submit(s);
@@ -218,6 +222,7 @@ void luring_io_unplug(BlockDriverState *bs, LuringState *s)
static int luring_do_submit(int fd, LuringAIOCB *luringcb, LuringState *s,
uint64_t offset, int type)
{
+ int ret;
struct io_uring_sqe *sqes = io_uring_get_sqe(&s->ring);
if (!sqes) {
sqes = &luringcb->sqeq;
@@ -243,11 +248,14 @@ static int luring_do_submit(int fd, LuringAIOCB
*luringcb, LuringState *s,
}
io_uring_sqe_set_data(sqes, luringcb);
s->io_q.in_queue++;
-
+ trace_luring_do_submit(s->io_q.blocked, s->io_q.plugged,
+ s->io_q.in_queue, s->io_q.in_flight);
if (!s->io_q.blocked &&
(!s->io_q.plugged ||
s->io_q.in_flight + s->io_q.in_queue >= MAX_EVENTS)) {
- return ioq_submit(s);
+ ret = ioq_submit(s);
+ trace_luring_do_submit_done(ret);
+ return ret;
}
return 0;
}
@@ -295,6 +303,7 @@ LuringState *luring_init(Error **errp)
int rc;
LuringState *s;
s = g_malloc0(sizeof(*s));
+ trace_luring_init_state((void *)s, sizeof(*s));
struct io_uring *ring = &s->ring;
rc = io_uring_queue_init(MAX_EVENTS, ring, 0);
if (rc < 0) {
@@ -312,4 +321,5 @@ void luring_cleanup(LuringState *s)
{
io_uring_queue_exit(&s->ring);
g_free(s);
+ trace_luring_cleanup_state();
}
diff --git a/block/trace-events b/block/trace-events
index 1e0653ce6d..038ff14815 100644
--- a/block/trace-events
+++ b/block/trace-events
@@ -60,6 +60,14 @@ qmp_block_stream(void *bs, void *job) "bs %p job %p"
file_paio_submit(void *acb, void *opaque, int64_t offset, int count, int type)
"acb %p opaque %p offset %"PRId64" count %d type %d"
file_copy_file_range(void *bs, int src, int64_t src_off, int dst, int64_t
dst_off, int64_t bytes, int flags, int64_t ret) "bs %p src_fd %d offset
%"PRIu64" dst_fd %d offset %"PRIu64" bytes %"PRIu64" flags %d ret %"PRId64
+#io_uring.c
+luring_init_state(void *s, size_t size) "s %p size %zu"
+luring_cleanup_state(void) "s freed"
+disable luring_io_plug(void) "plug"
+disable luring_io_unplug(int blocked, int plugged, int queued, int inflight)
"blocked %d plugged %d queued %d inflight %d"
+disable luring_do_submit(int blocked, int plugged, int queued, int inflight)
"blocked %d plugged %d queued %d inflight %d"
+disable luring_do_submit_done(int ret) "submitted to kernel %d"
+
# qcow2.c
qcow2_writev_start_req(void *co, int64_t offset, int bytes) "co %p offset 0x%"
PRIx64 " bytes %d"
qcow2_writev_done_req(void *co, int ret) "co %p ret %d"
--
2.17.1
- [Qemu-block] [PATCH v4 0/9] Add support for io_uring, Aarushi Mehta, 2019/06/03
- [Qemu-block] [PATCH v4 9/9] block: add trace events for io_uring,
Aarushi Mehta <=
- [Qemu-block] [PATCH v4 8/9] block/file-posix.c: extend to use io_uring, Aarushi Mehta, 2019/06/03
- [Qemu-block] [PATCH v4 6/9] util/async: add aio interfaces for io_uring, Aarushi Mehta, 2019/06/03
- [Qemu-block] [PATCH v4 7/9] blockdev: accept io_uring as option, Aarushi Mehta, 2019/06/03
- [Qemu-block] [PATCH v4 5/9] stubs: add stubs for io_uring interface, Aarushi Mehta, 2019/06/03
- [Qemu-block] [PATCH v4 4/9] block/io_uring: implements interfaces for io_uring, Aarushi Mehta, 2019/06/03
- [Qemu-block] [PATCH v4 3/9] block/block: add BDRV flag for io_uring, Aarushi Mehta, 2019/06/03
- [Qemu-block] [PATCH v4 2/9] qapi/block-core: add option for io_uring, Aarushi Mehta, 2019/06/03