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[2620:137:e000::1:20]) by mx.google.com with ESMTP id e1-20020a170902d38100b001a6f91439d8si7319599pld.393.2023.06.06.07.50.30; Tue, 06 Jun 2023 07:50:53 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=NGSYWuzH; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238010AbjFFOhz (ORCPT + 99 others); Tue, 6 Jun 2023 10:37:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238012AbjFFOhl (ORCPT ); Tue, 6 Jun 2023 10:37:41 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B29010F0 for ; Tue, 6 Jun 2023 07:37:31 -0700 (PDT) Message-ID: <20230606142031.418148389@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1686062250; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=BSLAZiaPu4OlRt7MJLr8iteahUnDIy2W/NiT+df9pkg=; b=NGSYWuzHITJVHI6VTsAf1RP0yNKLn79a3HYPloWgCUX5l4IL/Y3fEGAy5jJdnxpqLdeDOu BJEU49bHoqnbPP7zSmGBLf2qDwc7R8IkUMt++9Nm10DLjKwhwEGOL1s2w62k/FYrneQ8hq GLGJH5NU02wxZ5XXnXWHnfIk9i8+nCDuMdTgZ8UbZSmviMi+9BrdNVWYMr1GDvX2oTCiWe XiMRa9wCPZg4gkYCfXjL3GGSbpfnIkymBPHGLs01wQLKlnV62KgQk4u62mxfS2WEOSaRvh jZaEA4GGm40/gTq3MCj1QDqIHJpmUPBZon847bpwaRNcZwShycOsh8rfoDRhfQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1686062250; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=BSLAZiaPu4OlRt7MJLr8iteahUnDIy2W/NiT+df9pkg=; b=SZ+WwAc0hpLj84ylncyoVTYGGxBxKyzgeyk1hVyKYq34jKgtd5/JJtvSKU/azX3SrSJ+3V bPmlI+45gUg4iQCg== From: Thomas Gleixner To: LKML Cc: Frederic Weisbecker , Anna-Maria Behnsen , John Stultz , Peter Zijlstra , Ingo Molnar , Stephen Boyd , Eric Biederman , Oleg Nesterov Subject: [patch 07/45] selftests/timers/posix-timers: Validate overrun after unblock References: <20230606132949.068951363@linutronix.de> MIME-Version: 1.0 Date: Tue, 6 Jun 2023 16:37:29 +0200 (CEST) X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767965252264231189?= X-GMAIL-MSGID: =?utf-8?q?1767965252264231189?= When a timer signal is blocked and later unblocked then one signal should be delivered with the correct number of overruns since the timer was queued. Validate that behaviour. Signed-off-by: Thomas Gleixner --- tools/testing/selftests/timers/posix_timers.c | 63 +++++++++++++++++++++++++- 1 file changed, 62 insertions(+), 1 deletion(-) --- a/tools/testing/selftests/timers/posix_timers.c +++ b/tools/testing/selftests/timers/posix_timers.c @@ -578,10 +578,68 @@ static void check_gettime(int which, con ksft_test_result_fail("check_gettime %s\n", name); } +static void check_overrun(int which, const char *name) +{ + struct timespec start, now; + struct tmrsig tsig = { }; + struct itimerspec its; + struct sigaction sa; + struct sigevent sev; + timer_t timerid; + sigset_t set; + + sa.sa_flags = SA_SIGINFO; + sa.sa_sigaction = siginfo_handler; + sigemptyset(&sa.sa_mask); + if (sigaction(SIGUSR1, &sa, NULL)) + fatal_error(name, "sigaction()"); + + /* Block the signal */ + sigemptyset(&set); + sigaddset(&set, SIGUSR1); + if (sigprocmask(SIG_BLOCK, &set, NULL)) + fatal_error(name, "sigprocmask(SIG_BLOCK)"); + + memset(&sev, 0, sizeof(sev)); + sev.sigev_notify = SIGEV_SIGNAL; + sev.sigev_signo = SIGUSR1; + sev.sigev_value.sival_ptr = &tsig; + + if (timer_create(which, &sev, &timerid)) + fatal_error(name, "timer_create()"); + + /* Start the timer to expire in 100ms and 100ms intervals */ + its.it_value.tv_sec = 0; + its.it_value.tv_nsec = 100000000; + its.it_interval.tv_sec = 0; + its.it_interval.tv_nsec = 100000000; + timer_settime(timerid, 0, &its, NULL); + + if (clock_gettime(which, &start)) + fatal_error(name, "clock_gettime()"); + + do { + if (clock_gettime(which, &now)) + fatal_error(name, "clock_gettime()"); + } while (calcdiff_ns(now, start) < NSECS_PER_SEC); + + /* Unblock it, which should deliver a signal */ + if (sigprocmask(SIG_UNBLOCK, &set, NULL)) + fatal_error(name, "sigprocmask(SIG_UNBLOCK)"); + + if (timer_delete(timerid)) + fatal_error(name, "timer_delete()"); + + if (tsig.signals == 1 && tsig.overruns == 9) + ksft_test_result_pass("check_overrun %s\n", name); + else + ksft_test_result_fail("check_overrun %s\n", name); +} + int main(int argc, char **argv) { ksft_print_header(); - ksft_set_plan(15); + ksft_set_plan(18); check_itimer(ITIMER_VIRTUAL, "ITIMER_VIRTUAL"); check_itimer(ITIMER_PROF, "ITIMER_PROF"); @@ -608,6 +666,9 @@ int main(int argc, char **argv) check_gettime(CLOCK_MONOTONIC, "CLOCK_MONOTONIC"); check_gettime(CLOCK_PROCESS_CPUTIME_ID, "CLOCK_PROCESS_CPUTIME_ID"); check_gettime(CLOCK_THREAD_CPUTIME_ID, "CLOCK_THREAD_CPUTIME_ID"); + check_overrun(CLOCK_MONOTONIC, "CLOCK_MONOTONIC"); + check_overrun(CLOCK_PROCESS_CPUTIME_ID, "CLOCK_PROCESS_CPUTIME_ID"); + check_overrun(CLOCK_THREAD_CPUTIME_ID, "CLOCK_THREAD_CPUTIME_ID"); ksft_finished(); }