On 9/14/20 3:36 PM, Douglas Gilbert wrote: > 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_". Thanks Doug - I haven't really been maintaining the examples in the kernel, only in liburing. I'll apply this one, and hopefully sync them up for 5.10 in general. -- Jens Axboe
