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SubjectRe: [PATCH 1/3] tools libc_compat: add gettid
Hi Riccardo,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/perf/core]
[also build test ERROR on linux/master linus/master v5.14-rc2 next-20210723]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Riccardo-Mancini/tools-add-gettid-to-libc_compat-h/20210722-233601
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git c76826a65f50038f050424365dbf3f97203f8710
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://github.com/0day-ci/linux/commit/42df183984cce4c25932242bbf9133684e9425db
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Riccardo-Mancini/tools-add-gettid-to-libc_compat-h/20210722-233601
git checkout 42df183984cce4c25932242bbf9133684e9425db
# save the attached .config to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash -C tools/testing/selftests/bpf install

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

In file included from main.h:15,
from xlated_dumper.c:14:
tools/include/tools/libc_compat.h: In function 'gettid':
tools/include/tools/libc_compat.h:24:16: warning: implicit declaration of function 'syscall' [-Wimplicit-function-declaration]
24 | return (pid_t)syscall(__NR_gettid);
| ^~~~~~~
>> tools/include/tools/libc_compat.h:24:24: error: '__NR_gettid' undeclared (first use in this function)
24 | return (pid_t)syscall(__NR_gettid);
| ^~~~~~~~~~~
tools/include/tools/libc_compat.h:24:24: note: each undeclared identifier is reported only once for each function it appears in
--
In file included from main.h:15,
from common.c:27:
>> tools/include/tools/libc_compat.h:22:21: error: static declaration of 'gettid' follows non-static declaration
22 | static inline pid_t gettid(void)
| ^~~~~~
In file included from /usr/include/unistd.h:1170,
from common.c:15:
/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;
| ^~~~~~
In file included from main.h:15,
from common.c:27:
tools/include/tools/libc_compat.h: In function 'gettid':
>> tools/include/tools/libc_compat.h:24:24: error: '__NR_gettid' undeclared (first use in this function)
24 | return (pid_t)syscall(__NR_gettid);
| ^~~~~~~~~~~
tools/include/tools/libc_compat.h:24:24: note: each undeclared identifier is reported only once for each function it appears in
--
In file included from main.h:15,
from btf.c:20:
tools/include/tools/libc_compat.h: In function 'gettid':
>> tools/include/tools/libc_compat.h:24:24: error: '__NR_gettid' undeclared (first use in this function)
24 | return (pid_t)syscall(__NR_gettid);
| ^~~~~~~~~~~
tools/include/tools/libc_compat.h:24:24: note: each undeclared identifier is reported only once for each function it appears in


vim +/__NR_gettid +24 tools/include/tools/libc_compat.h

20
21 #ifndef HAVE_GETTID
> 22 static inline pid_t gettid(void)
23 {
> 24 return (pid_t)syscall(__NR_gettid);

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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