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bdevperf: Make bdevperf_construct_targets() asynchronous by sentinel value

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Follow the idea of bdev_get_iostat in module/bdev/rpc/bdev_rpc.c.

Add a global variable g_bdev_count and then set it to 1 as sentinel
value in bdev_construct_targets().

Subsequent patches will make _bdevperf_construct_targets() asynchronous.
Then bdevperf_construct_targets() will be truely asynchronous.

This patch is too small to be an independent patch but keep to
hold previous review result.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I49d0b6e6d61df65d4eb31c402f98cc4300482e20
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/639
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Shuhei Matsumoto 2020-02-09 17:40:51 -05:00 committed by Tomasz Zawadzki
parent a4335feb6d
commit 595173aaba
1 changed files with 10 additions and 1 deletions
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11
test/bdev/bdevperf/bdevperf.c
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@ -1043,6 +1043,8 @@ bdevperf_construct_target(struct spdk_bdev *bdev, struct io_target_group *group)
return 0;
}
static uint32_t g_bdev_count = 0;
static struct io_target_group *
get_next_io_target_group(void)
{
@ -1099,6 +1101,11 @@ bdevperf_construct_targets(void)
{
struct spdk_bdev *bdev;
/* Increment initial bdev_count so that it will never reach 0 in the middle
* of iteration.
*/
g_bdev_count = 1;
if (g_target_bdev_name != NULL) {
bdev = spdk_bdev_get_by_name(g_target_bdev_name);
if (bdev) {
@ -1114,7 +1121,9 @@ bdevperf_construct_targets(void)
}
}
bdevperf_construct_targets_tasks();
if (--g_bdev_count == 0) {
bdevperf_construct_targets_tasks();
}
}
static int