We need a lot of RAM for this case, my vm always fails it. Don't
hard fail due to ENOMEM, just skip the test.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Just a basic test case that does various forms of linked nops, and
a sample bare bones copy program using linked reads and writes.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Static libraries are generally built without -fPIC for slight
performance gain, make that the case for liburing.
Signed-off-by: Kevin Vigor <kvigor@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
'make install' did not install all the headers necessary to use the
library; fix.
Additionally allow specifying the install prefix, which was previously
hardcoded to /usr.
Signed-off-by: Kevin Vigor <kvigor@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
SQPOLL requires root, if the tests are run as a user, we'll get
EPERM instead of EINVAL. Don't fail the test because of that, just
mention it in the log.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
With the recent change to ensure that submission side errors that
happen on behalf of an sqe are returned in the form of a cqe rather
than -1/errno from the system call, make sure that the man page
reflects that.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
For the IORING_SETUP_SQPOLL|IORING_SETUP_SQ_AFF test case, add_pipe is
not set, and the output is like:
"...flags: IORING_SETUP_SQPOLLIORING_SETUP_SQ_AFF...".
Set add_pipe for IORING_SETUP_SQPOLL flag so that the output is like:
"...flags: IORING_SETUP_SQPOLL|IORING_SETUP_SQ_AFF...".
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Install man pages on running 'make install', so that
we can run commands like 'man 2 io_uring_setup'.
Signed-off-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This adds the missing shell script that runs the tests.
Fixes: 4916320ec3 ("Separate test cases from examples")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We have io_uring_get_sqe() on the submission side, yet the completion
side is named _completion. Rename as follows:
io_uring_get_completion() io_uring_peek_cqe()
iO_uring_wait_completion() io_uring_wait_cqe()
This better tells the user what the _get variant does by calling it
_peek instead, and we move to using _cqe() as the postfix instead
of _completion.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
There's a failure case where an application gets a cqe entry, but
the kernel can then overwrite it before the application is done
reading it. This can happen since the io_uring_{get,wait}_completion()
interface both returns a CQE pointer AND increments the ring index.
If the kernel reuses this entry before the applications is done reading
it, the contents may be corrupted.
Remove the CQ head increment from the CQE retrieval, and put it into
a separate helper, io_uring_cqe_seen(). The application must call this
helper when it got a new CQE entry through one of the above calls, and
it's now done reading it.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Also changes the fsync prep helper to require passing in the actual
flag, not just a boolean for fsync vs fdatasync.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This cache hint has been removed from the io_uring series, as there's
some hesitation to leak this information to userspace. Remove it from
the header file and the man page. We can always re-introduce it later,
if we get some variant of this included.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
A previous fix that ensured we pass back the right error messed
up the normal return, which is number of entries submitted.
This makes the poll test cases fail.
Fixes: 8260029608 ("queue: ensure io_uring_submit() returns the right error")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We weren't passing back -errno for the system call failure.
This meant any error got turned into EPERM as far as the
caller was concerned.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add tests for io_uring_setup, io_uring_register and io_uring_enter.
The test coverage is nowhere near complete and the reporting is not
uniform. But, it's a start.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This really wants to be a "will we over-fill the ring?" kind of
check, but the sqe_head/sqe_tail should not be that far apart. If they
are, that's a bug elsewhere. So just kill the check.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
min_complete means slightly different things depending on how the ring
was setup.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
With a recent change to the kernel side, we now fully guarantee that
once io_uring_enter(2) returns that X entries have been submitted, it's
completely safe to reuse tohse entries. This used to not always be the
case, if an SQE had to be punted to async context for submission.
This makes for a more reliable and nicer interface.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
