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selftests: ublk: add --foreground command line

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Add --foreground command for helping to debug.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20250303124324.3563605-4-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei
2025-03-03 20:43:13 +08:00
committed by Jens Axboe
parent 9d80f48c5e
commit 2ecdcdfee5
2 changed files with 14 additions and 4 deletions
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17
tools/testing/selftests/ublk/kublk.c
View File

@@ -679,7 +679,10 @@ static int ublk_start_daemon(const struct dev_ctx *ctx, struct ublk_dev *dev)
}
ublk_ctrl_get_info(dev);
ublk_send_dev_event(ctx, dev->dev_info.dev_id);
if (ctx->fg)
ublk_ctrl_dump(dev);
else
ublk_send_dev_event(ctx, dev->dev_info.dev_id);
/* wait until we are terminated */
for (i = 0; i < dinfo->nr_hw_queues; i++)
@@ -867,6 +870,9 @@ static int cmd_dev_add(struct dev_ctx *ctx)
{
int res;
if (ctx->fg)
goto run;
ctx->_evtfd = eventfd(0, 0);
if (ctx->_evtfd < 0) {
ublk_err("%s: failed to create eventfd %s\n", __func__, strerror(errno));
@@ -876,8 +882,9 @@ static int cmd_dev_add(struct dev_ctx *ctx)
setsid();
res = fork();
if (res == 0) {
__cmd_dev_add(ctx);
exit(EXIT_SUCCESS);
run:
res = __cmd_dev_add(ctx);
return res;
} else if (res > 0) {
uint64_t id;
@@ -1044,6 +1051,7 @@ int main(int argc, char *argv[])
{ "debug_mask", 1, NULL, 0 },
{ "quiet", 0, NULL, 0 },
{ "zero_copy", 1, NULL, 'z' },
{ "foreground", 0, NULL, 0 },
{ 0, 0, 0, 0 }
};
int option_idx, opt;
@@ -1087,7 +1095,8 @@ int main(int argc, char *argv[])
ublk_dbg_mask = strtol(optarg, NULL, 16);
if (!strcmp(longopts[option_idx].name, "quiet"))
ublk_dbg_mask = 0;
break;
if (!strcmp(longopts[option_idx].name, "foreground"))
ctx.fg = 1;
}
}

1
tools/testing/selftests/ublk/kublk.h
View File

@@ -67,6 +67,7 @@ struct dev_ctx {
char *files[MAX_BACK_FILES];
unsigned int logging:1;
unsigned int all:1;
unsigned int fg:1;
int _evtfd;
};