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Wed, 9 Sep 2026 15:55:18 +0000 (GMT) Message-ID: Date: Wed, 9 Sep 2026 21:25:14 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 06/22] selftests/coredump: add a separate helper header To: Christian Brauner , linux-fsdevel@vger.kernel.org Cc: Jacob Lalonde , Josef Bacik , Jann Horn , Alexander Viro , Jan Kara , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Omar Sandoval , Jacob Lalonde , Shuah Khan , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org References: <20260820-work-coredump-sparse-v2-0-ba32dd718c51@kernel.org> <20260820-work-coredump-sparse-v2-6-ba32dd718c51@kernel.org> Content-Language: en-US From: R Nageswara Sastry In-Reply-To: <20260820-work-coredump-sparse-v2-6-ba32dd718c51@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-ORIG-GUID: -GMIu20S0TniOfQ60BcvKmA0xllf-m6x X-Proofpoint-Spam-Info: AW1haW4tMjYwOTA5MDE3MyBTYWx0ZWRfX61sTyWDZzHhO vAW96M28cUm3istQNjY6HSsfJMd2gTfjtUgG6p7YYxV/g1DXYPC5tdZYjAteip1DFY3fdFmwDEa 2w7DIjaYbJAtNLOPC7cbRqQE+9aBGoQ= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTA5MDE3MyBTYWx0ZWRfX0dqDXbIZPQcy 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 v3s6Z2AD B0Un3DqFOWBSq1sE9Z4QPqPqwt05Jv9TtDmfWs8IItMdzbo9G2jRlcksteziq3yOLzJaNL086SSsmFRL+HP3rtF5thW6NO3gNxxTGdQIr+FshYTxgo0r5E9ULdCJp38RapyKskptBwP/zJWP+cei+S3wmVjGaKMyRpcuidRynzVX4zjWK3mCNCUJbvCgOwTDfL5boh0snfV/LbQKwzIs6dowz7dcS2KoSWnSHMOXU6/md/l9R3+GyDTD32lfPSeFnCXu1YqExfMoYpAF1GPcvpEOv6zivo5ugHmozzn+hlWEUpPNMstvR7PHm/7HaNLm/iyD58OJ5hxVY3PWugjw+c8qF3Fv4MbHy3rw663BrUSKFy8dJp9eNhKtkjw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 20.08.2026 4:39 AM, Christian Brauner wrote: > Right now we have coredump_test.h which pulls in the test harness. > So it can't be included in coredump_test_helpers.c and it hand-rolls a > bunch of stuff that is not needed. > > Instead of this mess, split everything out into a separate > coredump_test_helpers.h header and make both coredump_test.h and > coredump_test_helpers.c include it. > > Signed-off-by: Christian Brauner (Amutable) Tested-by: R Nageswara Sastry System: ppc64le LPAR (IBM POWER), Linux 7.3-rc2 > --- > tools/testing/selftests/coredump/coredump_test.h | 30 +----------------- > .../selftests/coredump/coredump_test_helpers.c | 17 +--------- > .../selftests/coredump/coredump_test_helpers.h | 37 ++++++++++++++++++++++ > 3 files changed, 39 insertions(+), 45 deletions(-) > > diff --git a/tools/testing/selftests/coredump/coredump_test.h b/tools/testing/selftests/coredump/coredump_test.h > index a02809145e2d..8d99b5cb2f12 100644 > --- a/tools/testing/selftests/coredump/coredump_test.h > +++ b/tools/testing/selftests/coredump/coredump_test.h > @@ -3,18 +3,9 @@ > #ifndef __COREDUMP_TEST_H > #define __COREDUMP_TEST_H > > -#include > -#include > -#include > - > #include "../kselftest_harness.h" > -#include "../pidfd/pidfd.h" > - > -#ifndef PAGE_SIZE > -#define PAGE_SIZE 4096 > -#endif > > -#define NUM_THREAD_SPAWN 128 > +#include "coredump_test_helpers.h" > > /* Coredump fixture */ > FIXTURE(coredump) > @@ -24,15 +15,6 @@ FIXTURE(coredump) > int fd_tmpfs_detached; > }; > > -/* Shared helper function declarations */ > -void *do_nothing(void *arg); > -void crashing_child(void); > -int create_detached_tmpfs(void); > -int create_and_listen_unix_socket(const char *path); > -bool set_core_pattern(const char *pattern); > -int get_peer_pidfd(int fd); > -bool get_pidfd_info(int fd_peer_pidfd, struct pidfd_info *info); > - > /* Inline helper that uses harness types */ > static inline void wait_and_check_coredump_server(pid_t pid_coredump_server, > struct __test_metadata *const _metadata, > @@ -45,14 +27,4 @@ static inline void wait_and_check_coredump_server(pid_t pid_coredump_server, > ASSERT_EQ(WEXITSTATUS(status), 0); > } > > -/* Protocol helper function declarations */ > -ssize_t recv_marker(int fd); > -bool read_marker(int fd, enum coredump_mark mark); > -bool read_coredump_req(int fd, struct coredump_req *req); > -bool send_coredump_ack(int fd, const struct coredump_req *req, > - __u64 mask, size_t size_ack); > -bool check_coredump_req(const struct coredump_req *req); > -int open_coredump_tmpfile(int fd_tmpfs_detached); > -void process_coredump_worker(int fd_coredump, int fd_peer_pidfd, int fd_core_file); > - > #endif /* __COREDUMP_TEST_H */ > diff --git a/tools/testing/selftests/coredump/coredump_test_helpers.c b/tools/testing/selftests/coredump/coredump_test_helpers.c > index 306711e1b24d..570fc2e005c2 100644 > --- a/tools/testing/selftests/coredump/coredump_test_helpers.c > +++ b/tools/testing/selftests/coredump/coredump_test_helpers.c > @@ -20,23 +20,8 @@ > #include > > #include "../filesystems/wrappers.h" > -#include "../pidfd/pidfd.h" > > -/* Forward declarations to avoid including harness header */ > -struct __test_metadata; > - > -/* Match the fixture definition from coredump_test.h */ > -struct _fixture_coredump_data { > - char original_core_pattern[256]; > - pid_t pid_coredump_server; > - int fd_tmpfs_detached; > -}; > - > -#ifndef PAGE_SIZE > -#define PAGE_SIZE 4096 > -#endif > - > -#define NUM_THREAD_SPAWN 128 > +#include "coredump_test_helpers.h" > > void *do_nothing(void *arg) > { > diff --git a/tools/testing/selftests/coredump/coredump_test_helpers.h b/tools/testing/selftests/coredump/coredump_test_helpers.h > new file mode 100644 > index 000000000000..45904bd177b8 > --- /dev/null > +++ b/tools/testing/selftests/coredump/coredump_test_helpers.h > @@ -0,0 +1,37 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > + > +#ifndef __COREDUMP_TEST_HELPERS_H > +#define __COREDUMP_TEST_HELPERS_H > + > +#include > +#include > +#include > + > +#include "../pidfd/pidfd.h" > + > +#ifndef PAGE_SIZE > +#define PAGE_SIZE 4096 > +#endif > + > +#define NUM_THREAD_SPAWN 128 > + > +/* Shared helper function declarations */ > +void *do_nothing(void *arg); > +void crashing_child(void); > +int create_detached_tmpfs(void); > +int create_and_listen_unix_socket(const char *path); > +bool set_core_pattern(const char *pattern); > +int get_peer_pidfd(int fd); > +bool get_pidfd_info(int fd_peer_pidfd, struct pidfd_info *info); > + > +/* Protocol helper function declarations */ > +ssize_t recv_marker(int fd); > +bool read_marker(int fd, enum coredump_mark mark); > +bool read_coredump_req(int fd, struct coredump_req *req); > +bool send_coredump_ack(int fd, const struct coredump_req *req, > + __u64 mask, size_t size_ack); > +bool check_coredump_req(const struct coredump_req *req); > +int open_coredump_tmpfile(int fd_tmpfs_detached); > +void process_coredump_worker(int fd_coredump, int fd_peer_pidfd, int fd_core_file); > + > +#endif /* __COREDUMP_TEST_HELPERS_H */ > -- Thanks and Regards R.Nageswara Sastry