From patchwork Mon Jun 7 14:32:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Alex_Benn=C3=A9e?= X-Patchwork-Id: 455290 Delivered-To: patch@linaro.org Received: by 2002:a02:735a:0:0:0:0:0 with SMTP id a26csp2800316jae; Mon, 7 Jun 2021 07:33:29 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxZocYkF+HVPKAq1bDIXOF/4s7QJkPcp5ca/YS+STDvlG4gsl2p6UC3AunH38ADB7K02gLX X-Received: by 2002:a02:cc2c:: with SMTP id o12mr16123330jap.64.1623076409545; Mon, 07 Jun 2021 07:33:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1623076409; cv=none; d=google.com; s=arc-20160816; b=E3S2Hygd1mziIaOBzVyuyHMVzZfxrV7O6BPsXp+bKcZtGYTTOHI4helJ7BdBjjEQ0l 8VaDBFDRtQKmoeRTWCRW3Ci2FcAfAcX07/aV7nFv3GVjubvntWhQMXrSFfpWKNkyR2yi qu4+TDA6i2ozr1MvDKMyNzvaOk8S5qdoVobN2zDTHrtTNxKxueB7NhtGZwtD933cz5iW C/UE8PvI0YyEzy1vK9UNhRTviLEF1Uze7CQYehIJf/mkwwVLUTcQoiXREecxdc/WNFYJ hiBU9KOh59U8Shv2idfGW4Glkb3inqCnekBGjwda77xxp/eWL6njezGYlq5SfudcCAF9 yGMA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:cc:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=CD8MK1dqrE7V3HgQu/qknHgJp7sj9gokbgu7xhjg20o=; b=I4Ylj+xHHPSCMJ6gzAdWyrsToBFQBdIs0Rj9CC0cu/hRtw0uw6DkFCmg+ezBCiDfvG 9nPqX42orOKrI07zceT9L8JIz8e8SiB94bgIeTn8asXDEYsgooElX9weYAns2JYce5Cj DlSYD9/7k8qmaoMS9HwvvDIUswwO1mxF+umiyC91Y6CnyYP6K8Sc1gh1+fOsu13yctrI vKoyyyPeT9ZxiwTUAM/m7Fr84Ht2APdSnX9KzeR/ViIfzAjC6neL+RzubMuRNA0ntc/w EykYeH8QB0psyBZBOvUvVE6b1+7q7In0OL2EPEu0Dfj8CTOcTjiCApZVAXx1I0TqpsZH uLOw== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@linaro.org header.s=google header.b=GvMMRDOB; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id i19si14892461ilj.131.2021.06.07.07.33.29 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Mon, 07 Jun 2021 07:33:29 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=fail header.i=@linaro.org header.s=google header.b=GvMMRDOB; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:36192 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lqGJk-0002yt-U8 for patch@linaro.org; Mon, 07 Jun 2021 10:33:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58750) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lqGJV-0002yi-7I for qemu-devel@nongnu.org; Mon, 07 Jun 2021 10:33:13 -0400 Received: from mail-wm1-x334.google.com ([2a00:1450:4864:20::334]:53778) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lqGJP-0000KO-Gv for qemu-devel@nongnu.org; Mon, 07 Jun 2021 10:33:13 -0400 Received: by mail-wm1-x334.google.com with SMTP id h3so10204115wmq.3 for ; Mon, 07 Jun 2021 07:33:06 -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 :mime-version:content-transfer-encoding; bh=CD8MK1dqrE7V3HgQu/qknHgJp7sj9gokbgu7xhjg20o=; b=GvMMRDOB0P9flWO2FRxGB40qiMl050eDXyDgNfQkIOfZrvLgCDshzrT1kaJRUoDGew sn3NR5kGmXR8hOzg4UOBTKHTmYxelKFxfA1NnLwPb4P0IzzU/9/WV5qd2bir5ElZOnPi qR2ze1OGWFcs8p6eLdD1me07J6XntRZQRBYBBzm2SF5DQ1tK3b13cCp0UiLBp13+eAn/ kGxTPq/X3AMraP7syRFYG7BYeVWsaibn12wTZj6JTo9vO7+BvgzSI2ad9evWoIvsYvQA u5qvLPfeOZi0r327ePVQgcUKfGn4Hqqz/zirF6QRSRG3JCbiuvuCuWfbVuuMXeTozREA niYQ== 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:mime-version:content-transfer-encoding; bh=CD8MK1dqrE7V3HgQu/qknHgJp7sj9gokbgu7xhjg20o=; b=nOXIJ87nfQQ8cceWw2/60dKsnX7PHh6MwpxjXAMjgl0rmwnQWRs7mQyK0DTBGwMP3y 8+2EmFR9zJY5zBboV+9qF+dmPzIxPvJeqZqJqvlNke6W6wi495X1I8X3ur1Y6l4tjvfE QxgL2e5pUV+fib/RyEBU/l593PLj0V3Vpqr5ptQFXzAtk6YJ5naEskwPBFilS7eutGZZ DQqfPQs2nGzgStsNNZmSxwV9LTPYx6Lpp8KXX00UZWFc250hzpFzyP5JiitFYWDU0Csx bOiRME3XO0mUWJVMWso5qzucOdTYpWud7vbUA/IGpYmm49W1IiKlEM3AMw7SgmaSoVsM N4Wg== X-Gm-Message-State: AOAM5338JT0nVKPtFfvvCe2YdUU4s8aixE5ooNTOWY0OgIVVNno05A/N LBK8rBR1KCzrijNgbnnKInEbjA== X-Received: by 2002:a05:600c:47c4:: with SMTP id l4mr16962146wmo.145.1623076385743; Mon, 07 Jun 2021 07:33:05 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id u7sm12440623wrt.18.2021.06.07.07.33.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Jun 2021 07:33:04 -0700 (PDT) Received: from zen.lan (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id A75101FF87; Mon, 7 Jun 2021 15:33:03 +0100 (BST) From: =?utf-8?q?Alex_Benn=C3=A9e?= To: peter.maydell@linaro.org Subject: [PULL 1/8] tests/tcg: add a multiarch signals test to stress test signal delivery Date: Mon, 7 Jun 2021 15:32:56 +0100 Message-Id: <20210607143303.28572-2-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210607143303.28572-1-alex.bennee@linaro.org> References: <20210607143303.28572-1-alex.bennee@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::334; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x334.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Henderson , =?utf-8?q?Alex_Benn?= =?utf-8?b?w6ll?= , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" This adds a simple signal test that combines the POSIX timer_create with signal delivery across multiple threads. The aim is to provide a bit more of a stress test to flush out signal handling issues for easily than the occasional random crash we sometimes see in linux-test or threadcount. Signed-off-by: Alex Bennée Reviewed-by: Richard Henderson Message-Id: <20210527160319.19834-2-alex.bennee@linaro.org> -- 2.20.1 diff --git a/tests/tcg/multiarch/signals.c b/tests/tcg/multiarch/signals.c new file mode 100644 index 0000000000..998c8fdefd --- /dev/null +++ b/tests/tcg/multiarch/signals.c @@ -0,0 +1,149 @@ +/* + * linux-user signal handling tests. + * + * Copyright (c) 2021 Linaro Ltd + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static void error1(const char *filename, int line, const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + fprintf(stderr, "%s:%d: ", filename, line); + vfprintf(stderr, fmt, ap); + fprintf(stderr, "\n"); + va_end(ap); + exit(1); +} + +static int __chk_error(const char *filename, int line, int ret) +{ + if (ret < 0) { + error1(filename, line, "%m (ret=%d, errno=%d/%s)", + ret, errno, strerror(errno)); + } + return ret; +} + +#define error(fmt, ...) error1(__FILE__, __LINE__, fmt, ## __VA_ARGS__) + +#define chk_error(ret) __chk_error(__FILE__, __LINE__, (ret)) + +/* + * Thread handling + */ +typedef struct ThreadJob ThreadJob; + +struct ThreadJob { + int number; + int sleep; + int count; +}; + +static pthread_t *threads; +static int max_threads = 10; +__thread int signal_count; +int total_signal_count; + +static void *background_thread_func(void *arg) +{ + ThreadJob *job = (ThreadJob *) arg; + + printf("thread%d: started\n", job->number); + while (total_signal_count < job->count) { + usleep(job->sleep); + } + printf("thread%d: saw %d alarms from %d\n", job->number, + signal_count, total_signal_count); + return NULL; +} + +static void spawn_threads(void) +{ + int i; + threads = calloc(sizeof(pthread_t), max_threads); + + for (i = 0; i < max_threads; i++) { + ThreadJob *job = calloc(sizeof(ThreadJob), 1); + job->number = i; + job->sleep = i * 1000; + job->count = i * 100; + pthread_create(threads + i, NULL, background_thread_func, job); + } +} + +static void close_threads(void) +{ + int i; + for (i = 0; i < max_threads; i++) { + pthread_join(threads[i], NULL); + } + free(threads); + threads = NULL; +} + +static void sig_alarm(int sig, siginfo_t *info, void *puc) +{ + if (sig != SIGRTMIN) { + error("unexpected signal"); + } + signal_count++; + __atomic_fetch_add(&total_signal_count, 1, __ATOMIC_SEQ_CST); +} + +static void test_signals(void) +{ + struct sigaction act; + struct itimerspec it; + timer_t tid; + struct sigevent sev; + + /* Set up SIG handler */ + act.sa_sigaction = sig_alarm; + sigemptyset(&act.sa_mask); + act.sa_flags = SA_SIGINFO; + chk_error(sigaction(SIGRTMIN, &act, NULL)); + + /* Create POSIX timer */ + sev.sigev_notify = SIGEV_SIGNAL; + sev.sigev_signo = SIGRTMIN; + sev.sigev_value.sival_ptr = &tid; + chk_error(timer_create(CLOCK_REALTIME, &sev, &tid)); + + it.it_interval.tv_sec = 0; + it.it_interval.tv_nsec = 1000000; + it.it_value.tv_sec = 0; + it.it_value.tv_nsec = 1000000; + chk_error(timer_settime(tid, 0, &it, NULL)); + + spawn_threads(); + + do { + usleep(1000); + } while (total_signal_count < 2000); + + printf("shutting down after: %d signals\n", total_signal_count); + + close_threads(); + + chk_error(timer_delete(tid)); +} + +int main(int argc, char **argv) +{ + test_signals(); + return 0; +} diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target index a3a751723d..3f283eabe6 100644 --- a/tests/tcg/multiarch/Makefile.target +++ b/tests/tcg/multiarch/Makefile.target @@ -30,6 +30,8 @@ testthread: LDFLAGS+=-lpthread threadcount: LDFLAGS+=-lpthread +signals: LDFLAGS+=-lrt -lpthread + # We define the runner for test-mmap after the individual # architectures have defined their supported pages sizes. If no # additional page sizes are defined we only run the default test.