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bdev: Make spdk_bdev_mgr an I/O device

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Currently this is just a placeholder, but eventually
it will be used to replace the per-core queues.

Change-Id: Iefeb90711bcf001a383e36cd4eaadf813af66506
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/362613
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Ben Walker 2017-05-09 15:07:56 -07:00 committed by Jim Harris
parent ff87d29cc3
commit 35ab754449
1 changed files with 25 additions and 0 deletions
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25
lib/bdev/bdev.c
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@ -76,11 +76,17 @@ static struct spdk_bdev_mgr g_bdev_mgr = {
.bdevs = TAILQ_HEAD_INITIALIZER(g_bdev_mgr.bdevs),
};
struct spdk_bdev_mgmt_channel {
};
struct spdk_bdev_channel {
struct spdk_bdev *bdev;
/* The channel for the underlying device */
struct spdk_io_channel *channel;
/* Channel for the bdev manager */
struct spdk_io_channel *mgmt_channel;
};
struct spdk_bdev *
@ -241,6 +247,17 @@ spdk_bdev_config_text(FILE *fp)
}
}
static int
spdk_bdev_mgmt_channel_create(void *io_device, void *ctx_buf)
{
return 0;
}
static void
spdk_bdev_mgmt_channel_destroy(void *io_device, void *ctx_buf)
{
}
static int
spdk_bdev_initialize(void)
{
@ -305,6 +322,10 @@ spdk_bdev_initialize(void)
}
}
spdk_io_device_register(&g_bdev_mgr, spdk_bdev_mgmt_channel_create,
spdk_bdev_mgmt_channel_destroy,
sizeof(struct spdk_bdev_mgmt_channel));
return 0;
}
@ -349,6 +370,8 @@ spdk_bdev_finish(void)
spdk_mempool_free(g_bdev_mgr.buf_small_pool);
spdk_mempool_free(g_bdev_mgr.buf_large_pool);
spdk_io_device_unregister(&g_bdev_mgr);
return 0;
}
@ -514,6 +537,7 @@ 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);
return 0;
}
@ -524,6 +548,7 @@ spdk_bdev_channel_destroy(void *io_device, void *ctx_buf)
struct spdk_bdev_channel *ch = ctx_buf;
spdk_put_io_channel(ch->channel);
spdk_put_io_channel(ch->mgmt_channel);
}
struct spdk_io_channel *