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bdev: Add I/O stat tracking

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Change-Id: I05bb8294471bac3f9ecc4744e28d7d40e57e5364
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/362622
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
This commit is contained in:
Ben Walker 2017-04-06 14:40:29 -07:00
parent 5b89e4a18f
commit aec9d3dcb5
2 changed files with 38 additions and 0 deletions
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9
include/spdk/bdev.h
View File

@ -97,6 +97,13 @@ typedef void (*spdk_bdev_io_completion_cb)(struct spdk_bdev_io *bdev_io,
bool success,
void *cb_arg);
struct spdk_bdev_io_stat {
uint64_t bytes_read;
uint64_t num_read_ops;
uint64_t bytes_written;
uint64_t num_write_ops;
};
struct spdk_bdev *spdk_bdev_get_by_name(const char *bdev_name);
void spdk_bdev_unregister(struct spdk_bdev *bdev);
@ -214,6 +221,8 @@ struct spdk_bdev_io *spdk_bdev_unmap(struct spdk_bdev *bdev, struct spdk_io_chan
struct spdk_bdev_io *spdk_bdev_flush(struct spdk_bdev *bdev, struct spdk_io_channel *ch,
uint64_t offset, uint64_t length,
spdk_bdev_io_completion_cb cb, void *cb_arg);
void spdk_bdev_get_io_stat(struct spdk_bdev *bdev, struct spdk_io_channel *ch,
struct spdk_bdev_io_stat *stat);
int spdk_bdev_free_io(struct spdk_bdev_io *bdev_io);
int spdk_bdev_reset(struct spdk_bdev *bdev, struct spdk_io_channel *ch,
spdk_bdev_io_completion_cb cb, void *cb_arg);

29
lib/bdev/bdev.c
View File

@ -87,6 +87,8 @@ struct spdk_bdev_channel {
/* Channel for the bdev manager */
struct spdk_io_channel *mgmt_channel;
struct spdk_bdev_io_stat stat;
};
struct spdk_bdev *
@ -559,6 +561,7 @@ spdk_bdev_channel_create(void *io_device, void *ctx_buf)
ch->bdev = io_device;
ch->channel = bdev->fn_table->get_io_channel(bdev->ctxt);
ch->mgmt_channel = spdk_get_io_channel(&g_bdev_mgr);
memset(&ch->stat, 0, sizeof(ch->stat));
return 0;
}
@ -950,6 +953,17 @@ spdk_bdev_reset(struct spdk_bdev *bdev, struct spdk_io_channel *ch,
return 0;
}
void
spdk_bdev_get_io_stat(struct spdk_bdev *bdev, struct spdk_io_channel *ch,
struct spdk_bdev_io_stat *stat)
{
struct spdk_bdev_channel *channel = spdk_io_channel_get_ctx(ch);
*stat = channel->stat;
memset(&channel->stat, 0, sizeof(channel->stat));
}
int
spdk_bdev_free_io(struct spdk_bdev_io *bdev_io)
{
@ -1034,6 +1048,21 @@ spdk_bdev_io_complete(struct spdk_bdev_io *bdev_io, enum spdk_bdev_io_status sta
bdev_io->status = status;
if (bdev_io->status == SPDK_BDEV_IO_STATUS_SUCCESS) {
switch (bdev_io->type) {
case SPDK_BDEV_IO_TYPE_READ:
bdev_io->ch->stat.bytes_read += bdev_io->u.read.len;
bdev_io->ch->stat.num_read_ops++;
break;
case SPDK_BDEV_IO_TYPE_WRITE:
bdev_io->ch->stat.bytes_written += bdev_io->u.write.len;
bdev_io->ch->stat.num_write_ops++;
break;
default:
break;
}
}
assert(bdev_io->cb != NULL);
bdev_io->cb(bdev_io, status == SPDK_BDEV_IO_STATUS_SUCCESS, bdev_io->caller_ctx);
}