From patchwork Tue Dec 1 05:08:23 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rashmica Gupta X-Patchwork-Id: 550657 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 70145140273 for ; Tue, 1 Dec 2015 16:13:09 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=sgjefODs; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4704D1A2D9C for ; Tue, 1 Dec 2015 16:13:09 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=sgjefODs; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from mail-pa0-x22d.google.com (mail-pa0-x22d.google.com [IPv6:2607:f8b0:400e:c03::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 5A6541A1E66 for ; Tue, 1 Dec 2015 16:08:49 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=sgjefODs; dkim-atps=neutral Received: by pacdm15 with SMTP id dm15so209061813pac.3 for ; Mon, 30 Nov 2015 21:08:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:subject:date:message-id:in-reply-to:references; bh=F3ziG9uyASJkGq52JzGYWcIf/AY5Lb2sQT0Hj5qDAAY=; b=sgjefODsHlt+Qxbv6uYOQemIONEUZIhSuenlR/Px7obsULbsdiEg1PpwK+5/5EMm+d c2PJJ6V9U2TtM0lL5nDLRxJEOTN148a6kJFUenzwHOzrdvcL4vM98oRCJQDo0EsBvH54 CO2jaJVqOuF5jSGKxrkxrscrycJO2V8Uk28ZpDTWH9zWirEhDiFn3EOjv8osn2bsXxRx XCmZMXk+RmctjqMe/OZR3mISHE+iwWK+F/VJNBn6Q6PyEm35wxUV6HrF57GycbmEuqR/ z4zNG5PfuXm3EopeXFfvLSlU6jKNtOoG0VOnsHCkCGbSlLXApusPaJ56EbRyXBSrwVBT p/Vg== X-Received: by 10.98.89.196 with SMTP id k65mr77165101pfj.12.1448946527678; Mon, 30 Nov 2015 21:08:47 -0800 (PST) Received: from circle.ozlabs.ibm.com ([122.99.82.10]) by smtp.gmail.com with ESMTPSA id ux3sm55304740pac.18.2015.11.30.21.08.46 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 30 Nov 2015 21:08:47 -0800 (PST) From: Rashmica Gupta To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 2/3] selftests/powerpc: Add test for forking inside transaction Date: Tue, 1 Dec 2015 16:08:23 +1100 Message-Id: <1448946504-11653-3-git-send-email-rashmicy@gmail.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1448946504-11653-1-git-send-email-rashmicy@gmail.com> References: <1448946504-11653-1-git-send-email-rashmicy@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" This test does a fork syscall inside a transaction. Basic sniff test to see if we can enter the kernel during a transaction. Signed-off-by: Rashmica Gupta --- tools/testing/selftests/powerpc/tm/.gitignore | 1 + tools/testing/selftests/powerpc/tm/Makefile | 2 +- tools/testing/selftests/powerpc/tm/tm-fork.c | 41 +++++++++++++++++++++++++++ 3 files changed, 43 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/powerpc/tm/tm-fork.c diff --git a/tools/testing/selftests/powerpc/tm/.gitignore b/tools/testing/selftests/powerpc/tm/.gitignore index e6668217ccd0..d0c7c97e9b13 100644 --- a/tools/testing/selftests/powerpc/tm/.gitignore +++ b/tools/testing/selftests/powerpc/tm/.gitignore @@ -2,3 +2,4 @@ tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack +tm-fork diff --git a/tools/testing/selftests/powerpc/tm/Makefile b/tools/testing/selftests/powerpc/tm/Makefile index 578572a3700a..f7d4727662aa 100644 --- a/tools/testing/selftests/powerpc/tm/Makefile +++ b/tools/testing/selftests/powerpc/tm/Makefile @@ -1,4 +1,4 @@ -TEST_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack +TEST_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack tm-fork all: $(TEST_PROGS) diff --git a/tools/testing/selftests/powerpc/tm/tm-fork.c b/tools/testing/selftests/powerpc/tm/tm-fork.c new file mode 100644 index 000000000000..f571a48a59a0 --- /dev/null +++ b/tools/testing/selftests/powerpc/tm/tm-fork.c @@ -0,0 +1,41 @@ +/* + * Copyright 2015, Michael Neuling, IBM Corp. + * Licensed under GPLv2. + * + * Edited: Rashmica Gupta, Nov 2015 + * + * Fork inside a transaction + */ + +#include +#include +#include +#include +#include +#include + +#include "utils.h" +#include "tm.h" + +int test_fork(void) +{ + SKIP_IF(!have_htm()); + + asm __volatile__( + "tbegin.;" + "blt 1f; " + "li 0, 2;" /* fork syscall */ + "sc ;" + "tend.;" + "1: ;" + : : : "memory", "r0"); + /* If we reach here, we've passed. Otherwise we've probably crashed + * the kernel */ + + return 0; +} + +int main(int argc, char *argv[]) +{ + return test_harness(test_fork, "tm_fork"); +}