From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932235AbbBYWcw (ORCPT ); Wed, 25 Feb 2015 17:32:52 -0500 Received: from mail-pd0-f180.google.com ([209.85.192.180]:38280 "EHLO mail-pd0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932119AbbBYWcs (ORCPT ); Wed, 25 Feb 2015 17:32:48 -0500 From: John Stultz To: Linux Kernel Mailing List Cc: John Stultz , Shuah Khan , Prarit Bhargava , Thomas Gleixner , Richard Cochran Subject: [PATCH 17/19] selftests/timers: Add set-tai from the timetest suite Date: Wed, 25 Feb 2015 14:32:22 -0800 Message-Id: <1424903544-26855-18-git-send-email-john.stultz@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1424903544-26855-1-git-send-email-john.stultz@linaro.org> References: <1424903544-26855-1-git-send-email-john.stultz@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds the set-tai test which ensures the tai offset can be set properly from adjtimex. Cc: Shuah Khan Cc: Prarit Bhargava Cc: Thomas Gleixner Cc: Richard Cochran Signed-off-by: John Stultz --- tools/testing/selftests/timers/Makefile | 3 +- tools/testing/selftests/timers/set-tai.c | 67 ++++++++++++++++++++++++++++++++ 2 files changed, 69 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/timers/set-tai.c diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile index e9486cd..3538d08 100644 --- a/tools/testing/selftests/timers/Makefile +++ b/tools/testing/selftests/timers/Makefile @@ -3,7 +3,7 @@ LDFLAGS += -lrt -lpthread bins = posix_timers nanosleep inconsistency-check nsleep-lat raw_skew \ set-timer-lat threadtest mqueue-lat valid-adjtimex \ alarmtimer-suspend change_skew skew_consistency clocksource-switch \ - leap-a-day leapcrash + leap-a-day leapcrash set-tai all: ${bins} @@ -30,6 +30,7 @@ run_destructive_tests: run_tests ./clocksource-switch ./leap-a-day -s -i 10 ./leapcrash + ./set-tai clean: rm -f ${bins} diff --git a/tools/testing/selftests/timers/set-tai.c b/tools/testing/selftests/timers/set-tai.c new file mode 100644 index 0000000..555e06d --- /dev/null +++ b/tools/testing/selftests/timers/set-tai.c @@ -0,0 +1,67 @@ +/* Set tai offset + * by: John Stultz + * (C) Copyright Linaro 2013 + * Licensed under the GPLv2 + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + + +#include +#include +#include +#include +#include +#include +#include +#include + +int set_tai(int offset) +{ + struct timex tx; + + memset(&tx, 0, sizeof(tx)); + + tx.modes = ADJ_TAI; + tx.constant = offset; + + return adjtimex(&tx); +} + +int get_tai(void) +{ + struct timex tx; + + memset(&tx, 0, sizeof(tx)); + + adjtimex(&tx); + return tx.tai; +} + +int main(int argc, char **argv) +{ + int i, ret; + + ret = get_tai(); + printf("tai offset started at %i\n", ret); + + printf("Checking tai offsets can be properly set: "); + for (i = 1; i <= 60; i++) { + ret = set_tai(i); + ret = get_tai(); + if (ret != i) { + printf("[FAILED] expected: %i got %i\n", i, ret); + return -1; + } + } + printf("[OK]\n"); + return 0; +} -- 1.9.1