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This brings in the features flags.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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io_uring depends on the caller specifying the index into the array
of registered buffers for doing pre-mapped IO. Make this explicit
by requiring the caller to pass in this value for the
io_uring_prep_read_fixed() and io_uring_prep_write_fixed() helpers.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Rename the newly added arm barriers and READ/WRITE_ONCE
to avoid using popular names.
Signed-off-by: Julia Suvorova <jusual@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The names of the barriers conflict with the namespaces of other projects
when trying to directly include liburing.h. Avoid using popular global
names.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Julia Suvorova <jusual@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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making liburing on arm64 platform failed. let's support it.
root@Kylin:/# cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux buster/sid"
root@Kylin:/# gcc -v
gcc version 8.2.0 (Debian 8.2.0-20)
root@Kylin:~/liburing# make
make[1]: Entering directory '/root/liburing/src'
cc -g -fomit-frame-pointer -O2 -Wall -Iinclude/ -c -o setup.ol setup.c
In file included from include/liburing.h:14,
from setup.c:10:
include/liburing.h: In function 'io_uring_cq_advance':
include/liburing/barrier.h:73:2: warning: implicit declaration of function 'smp_mb'; did you mean 'smp_wmb'? [-Wimplicit-function-declaration]
smp_mb(); \
^~~~~~
include/liburing.h:111:3: note: in expansion of macro 'smp_store_release'
smp_store_release(cq->khead, *cq->khead + nr);
^~~~~~~~~~~~~~~~~
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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It is not possible to install barrier.h and compat.h into the top-level
/usr/include directly since they are likely to conflict with other
software. io_uring.h could be confused with the system's kernel header
file.
Put liburing headers into <liburing/*.h> so there is no chance of
conflicts or confusion.
Existing applications continue to build successfully since the location
of <liburing.h> is unchanged. In-tree examples and tests require
modification because src/liburing.h is moved to src/include/liburing.h.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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