tools/io_uring: fix compile breakage
authorDouglas Gilbert <dgilbert@interlog.com>
Mon, 14 Sep 2020 21:36:09 +0000 (17:36 -0400)
committerJens Axboe <axboe@kernel.dk>
Mon, 21 Sep 2020 13:50:58 +0000 (07:50 -0600)
commit72f04da48a9828ba3ae8ac77bea648bda8b7d0ff
tree7d94db6524aa6b1a399c6d25706f9d0f799cc715
parentf5cac8b156e8b7b67bb0fdfd19900855bf9569f3
tools/io_uring: fix compile breakage

It would seem none of the kernel continuous integration does this:
    $ cd tools/io_uring
    $ make

Otherwise it may have noticed:
   cc -Wall -Wextra -g -D_GNU_SOURCE   -c -o io_uring-bench.o
 io_uring-bench.c
io_uring-bench.c:133:12: error: static declaration of ‘gettid’
 follows non-static declaration
  133 | static int gettid(void)
      |            ^~~~~~
In file included from /usr/include/unistd.h:1170,
                 from io_uring-bench.c:27:
/usr/include/x86_64-linux-gnu/bits/unistd_ext.h:34:16: note:
 previous declaration of ‘gettid’ was here
   34 | extern __pid_t gettid (void) __THROW;
      |                ^~~~~~
make: *** [<builtin>: io_uring-bench.o] Error 1

The problem on Ubuntu 20.04 (with lk 5.9.0-rc5) is that unistd.h
already defines gettid(). So prefix the local definition with
"lk_".

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
tools/io_uring/io_uring-bench.c