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GET /api/1.1/patches/2223195/?format=api
{ "id": 2223195, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2223195/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ltp/patch/20260414164927.843200-1-sbertram@redhat.com/", "project": { "id": 59, "url": "http://patchwork.ozlabs.org/api/1.1/projects/59/?format=api", "name": "Linux Test Project development", "link_name": "ltp", "list_id": "ltp.lists.linux.it", "list_email": "ltp@lists.linux.it", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260414164927.843200-1-sbertram@redhat.com>", "date": "2026-04-14T16:49:21", "name": "[v2] semctl: updates for multi worker testing.", "commit_ref": null, "pull_url": null, "state": "needs-review-ack", "archived": false, "hash": "ceb0839202647d1ca5692f1cc06c32bad5229aec", "submitter": { "id": 92040, "url": "http://patchwork.ozlabs.org/api/1.1/people/92040/?format=api", "name": "Stephen Bertram", "email": "sbertram@redhat.com" }, "delegate": null, "mbox": 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"X-Mimecast-Originator": "redhat.com", "X-Spam-Status": "No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS shortcircuit=no\n autolearn=disabled version=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on in-3.smtp.seeweb.it", "X-Virus-Scanned": "clamav-milter 1.0.9 at in-3.smtp.seeweb.it", "X-Virus-Status": "Clean", "Subject": "[LTP] [PATCH v2] semctl: updates for multi worker testing.", "X-BeenThere": "ltp@lists.linux.it", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "Linux Test Project <ltp.lists.linux.it>", "List-Unsubscribe": "<https://lists.linux.it/options/ltp>,\n <mailto:ltp-request@lists.linux.it?subject=unsubscribe>", "List-Archive": "<http://lists.linux.it/pipermail/ltp/>", "List-Post": "<mailto:ltp@lists.linux.it>", "List-Help": "<mailto:ltp-request@lists.linux.it?subject=help>", "List-Subscribe": "<https://lists.linux.it/listinfo/ltp>,\n <mailto:ltp-request@lists.linux.it?subject=subscribe>", "From": "Stephen Bertram via ltp <ltp@lists.linux.it>", "Reply-To": "Stephen Bertram <sbertram@redhat.com>", "Cc": "Stephen Bertram <sbertram@redhat.com>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it", "Sender": "\"ltp\" <ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it>" }, "content": "Changed semctl01, which required updates to\nreduce interference and provide an allowance\nfor EINVAL and EIDRM failures.\n\nSigned-off-by: Stephen Bertram <sbertram@redhat.com>\n---\n .../kernel/syscalls/ipc/semctl/semctl01.c | 91 +++++++++++++------\n 1 file changed, 61 insertions(+), 30 deletions(-)", "diff": "diff --git a/testcases/kernel/syscalls/ipc/semctl/semctl01.c b/testcases/kernel/syscalls/ipc/semctl/semctl01.c\nindex 5bd675ab6..25c7ebc65 100644\n--- a/testcases/kernel/syscalls/ipc/semctl/semctl01.c\n+++ b/testcases/kernel/syscalls/ipc/semctl/semctl01.c\n@@ -8,6 +8,7 @@\n \n #define _GNU_SOURCE\n #include <stdlib.h>\n+#include <pthread.h>\n #include \"tst_safe_sysv_ipc.h\"\n #include \"tst_test.h\"\n #include \"lapi/sem.h\"\n@@ -18,14 +19,16 @@\n #define NCHILD 5\n #define SEMUN_CAST (union semun)\n \n-static int sem_id = -1;\n-static int sem_index;\n+static __thread int sem_id = -1;\n+static __thread int sem_index;\n static struct semid_ds buf;\n static struct seminfo ipc_buf;\n static unsigned short array[PSEMS];\n static struct sembuf sops;\n static int pid_arr[NCHILD];\n \n+static pthread_mutex_t sem_stat_lock = PTHREAD_MUTEX_INITIALIZER;\n+\n static void kill_all_children(void)\n {\n \tint j;\n@@ -243,28 +246,36 @@ static struct tcases {\n \tunion semun arg;\n \tvoid (*func_setup) ();\n } tests[] = {\n-\t{&sem_id, 0, IPC_STAT, func_stat, SEMUN_CAST & buf, NULL},\n-\t{&sem_id, 0, IPC_SET, func_set, SEMUN_CAST & buf, set_setup},\n-\t{&sem_id, 0, GETALL, func_gall, SEMUN_CAST array, NULL},\n-\t{&sem_id, 4, GETNCNT, func_cnt, SEMUN_CAST & buf, cnt_setup},\n-\t{&sem_id, 2, GETPID, func_pid, SEMUN_CAST & buf, pid_setup},\n-\t{&sem_id, 2, GETVAL, func_gval, SEMUN_CAST & buf, NULL},\n-\t{&sem_id, 4, GETZCNT, func_cnt, SEMUN_CAST & buf, cnt_setup},\n-\t{&sem_id, 0, SETALL, func_sall, SEMUN_CAST array, sall_setup},\n-\t{&sem_id, 4, SETVAL, func_sval, SEMUN_CAST INCVAL, NULL},\n-\t{&sem_id, 0, IPC_INFO, func_iinfo, SEMUN_CAST & ipc_buf, NULL},\n-\t{&sem_id, 0, SEM_INFO, func_sinfo, SEMUN_CAST & ipc_buf, NULL},\n-\t{&sem_index, 0, SEM_STAT, func_sstat, SEMUN_CAST & buf, NULL},\n-\t{&sem_id, 0, IPC_RMID, func_rmid, SEMUN_CAST & buf, NULL},\n+\t{NULL, 0, IPC_STAT, func_stat, SEMUN_CAST & buf, NULL},\n+\t{NULL, 0, IPC_SET, func_set, SEMUN_CAST & buf, set_setup},\n+\t{NULL, 0, GETALL, func_gall, SEMUN_CAST array, NULL},\n+\t{NULL, 4, GETNCNT, func_cnt, SEMUN_CAST & buf, cnt_setup},\n+\t{NULL, 2, GETPID, func_pid, SEMUN_CAST & buf, pid_setup},\n+\t{NULL, 2, GETVAL, func_gval, SEMUN_CAST & buf, NULL},\n+\t{NULL, 4, GETZCNT, func_cnt, SEMUN_CAST & buf, cnt_setup},\n+\t{NULL, 0, SETALL, func_sall, SEMUN_CAST array, sall_setup},\n+\t{NULL, 4, SETVAL, func_sval, SEMUN_CAST INCVAL, NULL},\n+\t{NULL, 0, IPC_INFO, func_iinfo, SEMUN_CAST & ipc_buf, NULL},\n+\t{NULL, 0, SEM_INFO, func_sinfo, SEMUN_CAST & ipc_buf, NULL},\n+\t{NULL, 0, SEM_STAT, func_sstat, SEMUN_CAST & buf, NULL},\n+\t{NULL, 0, IPC_RMID, func_rmid, SEMUN_CAST & buf, NULL},\n };\n \n static void verify_semctl(unsigned int n)\n {\n \tstruct tcases *tc = &tests[n];\n-\tint rval;\n+\tint rval, sid;\n+\tint retries = 5;\n+\n+\t/* Resolve sem id: SEM_STAT uses sem_index, others use sem_id */\n+\tif (tc->cmd == SEM_STAT)\n+\t\tsid = sem_index;\n+\telse {\n+\t\tsid = sem_id;\n+\t\tif (sid == -1)\n+\t\t\tsem_id = sid = SAFE_SEMGET(IPC_PRIVATE, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);\n+\t}\n \n-\tif (sem_id == -1)\n-\t\tsem_id = SAFE_SEMGET(IPC_PRIVATE, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);\n \tif (tc->func_setup) {\n \t\tswitch (tc->cmd) {\n \t\tcase GETNCNT:\n@@ -279,21 +290,41 @@ static void verify_semctl(unsigned int n)\n \t\t}\n \t}\n \n-\trval = SAFE_SEMCTL(*(tc->semid), tc->semnum, tc->cmd, tc->arg);\n-\tswitch (tc->cmd) {\n-\tcase GETNCNT:\n-\tcase GETZCNT:\n-\tcase GETPID:\n-\tcase GETVAL:\n-\tcase IPC_INFO:\n-\tcase SEM_STAT:\n+\t/* SEM_STAT: get index under lock, call SEM_STAT without lock, retry on EIDRM and EINVAL */\n+\tif (tc->cmd == SEM_STAT) {\n+\t\tdo {\n+\t\t\tpthread_mutex_lock(&sem_stat_lock);\n+\t\t\tsem_index = semctl(0, 0, IPC_INFO, (union semun)&ipc_buf);\n+\t\t\tpthread_mutex_unlock(&sem_stat_lock);\n+\t\t\tif (sem_index < 0)\n+\t\t\t\ttst_brk(TBROK | TERRNO, \"semctl(0, 0, IPC_INFO)\");\n+\t\t\trval = semctl(sem_index, 0, tc->cmd, tc->arg);\n+\t\t\tif (rval >= 0)\n+\t\t\t\tbreak;\n+\t\t\tif ((errno != EIDRM && errno != EINVAL) || --retries <= 0)\n+\t\t\t\ttst_brk(TBROK | TERRNO, \"semctl(SEM_STAT)\");\n+\t\t} while (1);\n \t\ttc->func_test(rval);\n-\t\tbreak;\n-\tdefault:\n+\t} else if (tc->cmd == IPC_RMID) {\n+\t\tpthread_mutex_lock(&sem_stat_lock);\n+\t\tSAFE_SEMCTL(sid, tc->semnum, tc->cmd, tc->arg);\n+\t\tpthread_mutex_unlock(&sem_stat_lock);\n \t\ttc->func_test();\n-\t\tbreak;\n+\t} else {\n+\t\trval = SAFE_SEMCTL(sid, tc->semnum, tc->cmd, tc->arg);\n+\t\tswitch (tc->cmd) {\n+\t\tcase GETNCNT:\n+\t\tcase GETZCNT:\n+\t\tcase GETPID:\n+\t\tcase GETVAL:\n+\t\tcase IPC_INFO:\n+\t\t\ttc->func_test(rval);\n+\t\t\tbreak;\n+\t\tdefault:\n+\t\t\ttc->func_test();\n+\t\t\tbreak;\n+\t\t}\n \t}\n-\n \tif (tc->cmd == GETNCNT || tc->cmd == GETZCNT)\n \t\tkill_all_children();\n }\n", "prefixes": [ "v2" ] }