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[2001:1418:10:5::2]) by mx.google.com with ESMTPS id l11si7014657wrm.128.2019.03.18.23.50.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Mar 2019 23:50:21 -0700 (PDT) Received-SPF: pass (google.com: domain of ltp-bounces+patch=linaro.org@lists.linux.it designates 2001:1418:10:5::2 as permitted sender) client-ip=2001:1418:10:5::2; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=c37C9MfS; spf=pass (google.com: domain of ltp-bounces+patch=linaro.org@lists.linux.it designates 2001:1418:10:5::2 as permitted sender) smtp.mailfrom="ltp-bounces+patch=linaro.org@lists.linux.it"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id BF09F294AC5 for ; Tue, 19 Mar 2019 07:50:20 +0100 (CET) X-Original-To: ltp@lists.linux.it Delivered-To: ltp@picard.linux.it Received: from in-3.smtp.seeweb.it (in-3.smtp.seeweb.it [217.194.8.3]) by picard.linux.it (Postfix) with ESMTP id D18B63EAEC9 for ; Tue, 19 Mar 2019 07:50:12 +0100 (CET) Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by in-3.smtp.seeweb.it (Postfix) with ESMTPS id BA1AC1A011EF for ; Tue, 19 Mar 2019 07:50:11 +0100 (CET) Received: by mail-pf1-x444.google.com with SMTP id i19so13056894pfd.0 for ; Mon, 18 Mar 2019 23:50:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=ADXPiECN0VcMyJNrjSmgk+tpFqj9cqIRecTA9SBHmzE=; b=c37C9MfSSN7F2e3wy/Otaew1L+DZj4WXfhQ3jDRKwYy5d/Ib3V7uTTIrA9ffcxIdNP Eu9xRgZKpH0CBLrpQUzpe2eEyt9ID0Ba1Gbqq139PK+IVfN7Kv5HPauqWaVh7SEAqqLl jtpyWfdtb8eUDLfcMyHGhEllsd+ApzAKzG993SDJPG1pxQEou4kZ+xy9+Mjeoz1G2Y8N guFhxrbB5TEQ0s5jHK5QbTvvxneGXH+rj55X481IiGxXnm/vPmNnfyN3WC9O4HCRrdy7 AfTihjalcb0WxnVxJxt2GvyobnT7ZiCFlOUfA3uuKfkybG/qw9xB8FEK15boJoOfbVFW 7NIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=ADXPiECN0VcMyJNrjSmgk+tpFqj9cqIRecTA9SBHmzE=; b=E7uvjN/NsGgYR9Hd5SqKTLX+lhLTBpLmorF/y/0xbdFM2wW+VH2QuPYAjJnp9o8x1x lZsNGc6xbfFLe4JbpdmI0VzL2YT6tLTxM9hSOhVDnh3pOK/zJcs/lY4Gc+yiFgCU8cAS 8U7QX5KDZ6y3d07mWvrFJK6eyJVGbEYeFvPpzLfV9OXzybuDKFOoFwAGPpQ1u8d4aU5F 03fRDVSKf+OWwKwgwKzne9QrfNCdOg28N+zA0+RB/qgVDoKCbES9lA1ouBiMtJaEjOB3 /KFnmSX1bwvpg6U7BSj5aAEg8PALIpg3Q9iowu3zgc+rvYnvoSXVtjS6CTWApZBrkoZo VAHw== X-Gm-Message-State: APjAAAVc5lMIeATnXo75/Y15YzrdTb78jhlI4Q8K0guaD6GrXy5OIrwN TUP2CJ+Cvb7lvPDKJI560t4pspYobyKfUg== X-Received: by 2002:aa7:83ca:: with SMTP id j10mr23199911pfn.50.1552978210090; Mon, 18 Mar 2019 23:50:10 -0700 (PDT) Received: from localhost.localdomain ([117.196.233.204]) by smtp.gmail.com with ESMTPSA id 16sm12452852pfz.106.2019.03.18.23.50.05 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 18 Mar 2019 23:50:09 -0700 (PDT) From: Sumit Garg To: ltp@lists.linux.it, chrubis@suse.cz Date: Tue, 19 Mar 2019 12:19:39 +0530 Message-Id: <1552978181-27748-2-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1552978181-27748-1-git-send-email-sumit.garg@linaro.org> References: <1552978181-27748-1-git-send-email-sumit.garg@linaro.org> X-Virus-Scanned: clamav-milter 0.99.2 at in-3.smtp.seeweb.it X-Virus-Status: Clean X-Spam-Status: No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,SPF_PASS autolearn=disabled version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on in-3.smtp.seeweb.it Cc: daniel.thompson@linaro.org, Greg Hackmann Subject: [LTP] [PATCH v3 1/3] syscalls/tgkill01: add new test X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.18 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: ltp-bounces+patch=linaro.org@lists.linux.it Sender: "ltp" From: Greg Hackmann tgkill() delivers a signal to a specific thread. Test this by installing a SIGUSR1 handler which records the current pthread ID. Start a number of threads in parallel, then one-by-one call tgkill(..., tid, SIGUSR1) and check that the expected pthread ID was recorded. Signed-off-by: Greg Hackmann Signed-off-by: Sumit Garg Reviewed-by: Li Wang --- runtest/syscalls | 2 + testcases/kernel/syscalls/tgkill/.gitignore | 1 + testcases/kernel/syscalls/tgkill/Makefile | 10 +++ testcases/kernel/syscalls/tgkill/tgkill.h | 22 +++++ testcases/kernel/syscalls/tgkill/tgkill01.c | 134 ++++++++++++++++++++++++++++ 5 files changed, 169 insertions(+) create mode 100644 testcases/kernel/syscalls/tgkill/.gitignore create mode 100644 testcases/kernel/syscalls/tgkill/Makefile create mode 100644 testcases/kernel/syscalls/tgkill/tgkill.h create mode 100644 testcases/kernel/syscalls/tgkill/tgkill01.c diff --git a/runtest/syscalls b/runtest/syscalls index 03b613c..d6999f0 100644 --- a/runtest/syscalls +++ b/runtest/syscalls @@ -1400,6 +1400,8 @@ syslog10 syslog10 syslog11 syslog11 syslog12 syslog12 +tgkill01 tgkill01 + time01 time01 time02 time02 diff --git a/testcases/kernel/syscalls/tgkill/.gitignore b/testcases/kernel/syscalls/tgkill/.gitignore new file mode 100644 index 0000000..f4566fd --- /dev/null +++ b/testcases/kernel/syscalls/tgkill/.gitignore @@ -0,0 +1 @@ +tgkill01 diff --git a/testcases/kernel/syscalls/tgkill/Makefile b/testcases/kernel/syscalls/tgkill/Makefile new file mode 100644 index 0000000..a51080c --- /dev/null +++ b/testcases/kernel/syscalls/tgkill/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (c) 2018 Google, Inc. + +top_srcdir ?= ../../../.. + +include $(top_srcdir)/include/mk/testcases.mk + +include $(top_srcdir)/include/mk/generic_leaf_target.mk + +LDLIBS += -pthread diff --git a/testcases/kernel/syscalls/tgkill/tgkill.h b/testcases/kernel/syscalls/tgkill/tgkill.h new file mode 100644 index 0000000..a7d96f4 --- /dev/null +++ b/testcases/kernel/syscalls/tgkill/tgkill.h @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2018 Google, Inc. + */ + +#ifndef TGKILL_H +#define TGKILL_H + +#include "config.h" +#include "lapi/syscalls.h" + +static inline int sys_tgkill(int tgid, int tid, int sig) +{ + return tst_syscall(__NR_tgkill, tgid, tid, sig); +} + +static inline pid_t sys_gettid(void) +{ + return tst_syscall(__NR_gettid); +} + +#endif /* TGKILL_H */ diff --git a/testcases/kernel/syscalls/tgkill/tgkill01.c b/testcases/kernel/syscalls/tgkill/tgkill01.c new file mode 100644 index 0000000..075bf48 --- /dev/null +++ b/testcases/kernel/syscalls/tgkill/tgkill01.c @@ -0,0 +1,134 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2018 Google, Inc. + * + * tgkill() delivers a signal to a specific thread. Test this by installing + * a SIGUSR1 handler which records the current pthread ID. Start a number + * of threads in parallel, then one-by-one call tgkill(..., tid, SIGUSR1) + * and check that the expected pthread ID was recorded. + */ + +#include +#include + +#include "tst_safe_pthread.h" +#include "tst_test.h" +#include "tgkill.h" + +struct thread_state { + pthread_t thread; + pid_t tid; +}; + +static char *str_threads; +static int n_threads = 10; +static struct thread_state *threads; + +static pthread_t sigusr1_thread; + +static void sigusr1_handler(int signum __attribute__((unused))) +{ + sigusr1_thread = pthread_self(); +} + +static void *thread_func(void *arg) +{ + struct thread_state *thread = arg; + + /** + * There is no standard way to map pthread -> tid, so we will have the + * child stash its own tid then notify the parent that the stashed tid + * is available. + */ + thread->tid = sys_gettid(); + + TST_CHECKPOINT_WAKE(0); + + TST_CHECKPOINT_WAIT(1); + + return arg; +} + +static void start_thread(struct thread_state *thread) +{ + SAFE_PTHREAD_CREATE(&thread->thread, NULL, thread_func, thread); + + TST_CHECKPOINT_WAIT(0); +} + +static void stop_threads(void) +{ + int i; + + TST_CHECKPOINT_WAKE2(1, n_threads); + + for (i = 0; i < n_threads; i++) { + if (threads[i].tid == -1) + continue; + + SAFE_PTHREAD_JOIN(threads[i].thread, NULL); + threads[i].tid = -1; + } + + if (threads) + free(threads); +} + +static void run(void) +{ + int i; + + for (i = 0; i < n_threads; i++) { + sigusr1_thread = pthread_self(); + + TEST(sys_tgkill(getpid(), threads[i].tid, SIGUSR1)); + if (TST_RET) { + tst_res(TFAIL | TTERRNO, "tgkill() failed"); + return; + } + + while (pthread_equal(sigusr1_thread, pthread_self())) + usleep(1000); + + if (!pthread_equal(sigusr1_thread, threads[i].thread)) { + tst_res(TFAIL, "SIGUSR1 delivered to wrong thread"); + return; + } + } + + tst_res(TPASS, "SIGUSR1 delivered to correct threads"); +} + +static void setup(void) +{ + int i; + + if (tst_parse_int(str_threads, &n_threads, 1, INT_MAX)) + tst_brk(TBROK, "Invalid number of threads '%s'", str_threads); + + threads = SAFE_MALLOC(sizeof(*threads) * n_threads); + + struct sigaction sigusr1 = { + .sa_handler = sigusr1_handler, + }; + SAFE_SIGACTION(SIGUSR1, &sigusr1, NULL); + + for (i = 0; i < n_threads; i++) + threads[i].tid = -1; + + for (i = 0; i < n_threads; i++) + start_thread(&threads[i]); +} + +static struct tst_option options[] = { + {"t:", &str_threads, "-t Number of threads (default 10)"}, + {NULL, NULL, NULL}, +}; + +static struct tst_test test = { + .options = options, + .needs_checkpoints = 1, + .setup = setup, + .test_all = run, + .cleanup = stop_threads, +};