From patchwork Mon Nov 28 21:50:41 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 9450377 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C09516074E for ; Mon, 28 Nov 2016 20:13:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B432226D05 for ; Mon, 28 Nov 2016 20:13:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A920628068; Mon, 28 Nov 2016 20:13:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.4 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 16C3126D05 for ; Mon, 28 Nov 2016 20:13:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755126AbcK1UNt (ORCPT ); Mon, 28 Nov 2016 15:13:49 -0500 Received: from p3plsmtps2ded02.prod.phx3.secureserver.net ([208.109.80.59]:52484 "EHLO p3plsmtps2ded02.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753022AbcK1T4l (ORCPT ); Mon, 28 Nov 2016 14:56:41 -0500 Received: from linuxonhyperv.com ([72.167.245.219]) by : HOSTING RELAY : with SMTP id BS1ZcglcMjKbYBS1Zcon1E; Mon, 28 Nov 2016 12:55:37 -0700 x-originating-ip: 72.167.245.219 Received: by linuxonhyperv.com (Postfix, from userid 528) id 3AC7E22B803C; Mon, 28 Nov 2016 13:51:19 -0800 (PST) From: Matthew Wilcox To: linux-kernel@vger.kernel.org, Andrew Morton , Konstantin Khlebnikov , Ross Zwisler Cc: Matthew Wilcox , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, "Kirill A . Shutemov" Subject: [PATCH v3 03/33] radix tree test suite: Allow GFP_ATOMIC allocations to fail Date: Mon, 28 Nov 2016 13:50:41 -0800 Message-Id: <1480369871-5271-38-git-send-email-mawilcox@linuxonhyperv.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1480369871-5271-1-git-send-email-mawilcox@linuxonhyperv.com> References: <1480369871-5271-1-git-send-email-mawilcox@linuxonhyperv.com> X-CMAE-Envelope: MS4wfEPIPgdpaMk+7QtiVYs958MhPLzdk5g5DBPz5ldnhDJLByU08okGG1+6880unHSUoeP2iocuDGM+V9od1Jlkr+SdUuaGwd6G4fPpmSTLYNo9cXmLR5rM UQSXRcojYWpDfJ7YmgwSKEw0xEuCo5mx/Qylmj2MeOlmCicaucerDOWuGZSwz4L5K5zzJ1lIwPVuGBddnTutgBR/lPbto7I6IlWtkqMx4hzKXyFaSBU+croC GPF14/IIZw1TMx2m7wycPnTc7em4V08PrdOD77T0reB8LDfQ/IyfKPMO/lFBIdh8+H40YSeLrA96wfrrA6ku5Bd6WRn6nCglqmhKIqNWVSn9nZs7A28eL5bg VnZxaKQZ459ZXar2YkgID4az9M/CeggncTDywwsMvIXh7s0Dj59srw7LEUJNcggg7woUCLYub6tCjGpzTfD4j4tWV+e88OfowiFdfU8tdUKbR7pz1qo= Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Matthew Wilcox In order to test the preload code, it is necessary to fail GFP_ATOMIC allocations, which requires defining GFP_KERNEL and GFP_ATOMIC properly. Remove the obsolete __GFP_WAIT and copy the definitions of the __GFP flags which are used from the kernel include files. We also need the real definition of gfpflags_allow_blocking() to persuade the radix tree to actually use its preallocated nodes. Signed-off-by: Matthew Wilcox --- tools/testing/radix-tree/linux.c | 7 ++++++- tools/testing/radix-tree/linux/gfp.h | 22 +++++++++++++++++++--- tools/testing/radix-tree/linux/slab.h | 5 ----- 3 files changed, 25 insertions(+), 9 deletions(-) diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c index 1548237..3cfb04e 100644 --- a/tools/testing/radix-tree/linux.c +++ b/tools/testing/radix-tree/linux.c @@ -33,7 +33,12 @@ mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn, void *kmem_cache_alloc(struct kmem_cache *cachep, int flags) { - void *ret = malloc(cachep->size); + void *ret; + + if (flags & __GFP_NOWARN) + return NULL; + + ret = malloc(cachep->size); if (cachep->ctor) cachep->ctor(ret); uatomic_inc(&nr_allocated); diff --git a/tools/testing/radix-tree/linux/gfp.h b/tools/testing/radix-tree/linux/gfp.h index 5201b91..5b09b2c 100644 --- a/tools/testing/radix-tree/linux/gfp.h +++ b/tools/testing/radix-tree/linux/gfp.h @@ -3,8 +3,24 @@ #define __GFP_BITS_SHIFT 26 #define __GFP_BITS_MASK ((gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) -#define __GFP_WAIT 1 -#define __GFP_ACCOUNT 0 -#define __GFP_NOWARN 0 + +#define __GFP_HIGH 0x20u +#define __GFP_IO 0x40u +#define __GFP_FS 0x80u +#define __GFP_NOWARN 0x200u +#define __GFP_ATOMIC 0x80000u +#define __GFP_ACCOUNT 0x100000u +#define __GFP_DIRECT_RECLAIM 0x400000u +#define __GFP_KSWAPD_RECLAIM 0x2000000u + +#define __GFP_RECLAIM (__GFP_DIRECT_RECLAIM|__GFP_KSWAPD_RECLAIM) + +#define GFP_ATOMIC (__GFP_HIGH|__GFP_ATOMIC|__GFP_KSWAPD_RECLAIM) +#define GFP_KERNEL (__GFP_RECLAIM | __GFP_IO | __GFP_FS) + +static inline bool gfpflags_allow_blocking(const gfp_t gfp_flags) +{ + return !!(gfp_flags & __GFP_DIRECT_RECLAIM); +} #endif diff --git a/tools/testing/radix-tree/linux/slab.h b/tools/testing/radix-tree/linux/slab.h index 6d5a347..452e2bf 100644 --- a/tools/testing/radix-tree/linux/slab.h +++ b/tools/testing/radix-tree/linux/slab.h @@ -7,11 +7,6 @@ #define SLAB_PANIC 2 #define SLAB_RECLAIM_ACCOUNT 0x00020000UL /* Objects are reclaimable */ -static inline int gfpflags_allow_blocking(gfp_t mask) -{ - return 1; -} - struct kmem_cache { int size; void (*ctor)(void *);