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| author |   Jens Axboe <axboe@kernel.dk> | 2019-03-06 09:03:50 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-03-06 13:00:16 -0700 |
| commit | 21b4aa5d20fd07207e73270cadffed5c63fb4343 (patch) | |
| tree | f9efcd15b170905dd1d9a4f1801b26b0ec90c34e /tools/io_uring/barrier.h | |
| parent | io_uring: allow workqueue item to handle multiple buffered requests (diff) | |
| download | linux-dev-21b4aa5d20fd07207e73270cadffed5c63fb4343.tar.xz linux-dev-21b4aa5d20fd07207e73270cadffed5c63fb4343.zip | |
io_uring: add a few test tools
This adds two test programs in tools/io_uring/ that demonstrate both
the raw io_uring API (and all features) through a small benchmark
app, io_uring-bench, and the liburing exposed API in a simplified
cp(1) implementation through io_uring-cp.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/io_uring/barrier.h')
| -rw-r--r-- | tools/io_uring/barrier.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/io_uring/barrier.h b/tools/io_uring/barrier.h new file mode 100644 index 000000000000..ef00f6722ba9 --- /dev/null +++ b/tools/io_uring/barrier.h @@ -0,0 +1,16 @@ +#ifndef LIBURING_BARRIER_H +#define LIBURING_BARRIER_H + +#if defined(__x86_64) || defined(__i386__) +#define read_barrier() __asm__ __volatile__("":::"memory") +#define write_barrier() __asm__ __volatile__("":::"memory") +#else +/* + * Add arch appropriate definitions. Be safe and use full barriers for + * archs we don't have support for. + */ +#define read_barrier() __sync_synchronize() +#define write_barrier() __sync_synchronize() +#endif + +#endif |