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Thu, 29 Oct 2020 17:21:01 +0000 Received: from mo4-p02-ob.smtp.rzone.de (unknown [85.215.255.82]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id eafb4928-96a0-4e13-9bea-3740bdbff561; Thu, 29 Oct 2020 17:20:22 +0000 (UTC) Received: from sender by smtp.strato.de (RZmta 47.3.0 DYNA|AUTH) with ESMTPSA id j0b1afw9THKF3fQ (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256 bits)) (Client did not present a certificate); Thu, 29 Oct 2020 18:20:15 +0100 (CET) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: eafb4928-96a0-4e13-9bea-3740bdbff561 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1603992021; s=strato-dkim-0002; d=aepfle.de; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=hpVNJcvCo1Nci9xkIIy9iyHUvD/MXxHiNddZBiksKp8=; b=swT6PklD29WD3en/xNHuc35eLb9dBXhbmumKEAYTOnpUMWQteAbTO/RScOoCLtkAsB n/WC1r2RqAabpPe8NXhmWa5jB1B6ovWajEA6u8nVdwLPDb6mvmcLBokWpB2UUcoOFLr6 HtPOrTJbQcwyT3qA9BUyEpdOOmPG4Ep/QsRweYRfHSjmW2PuuD7nm68/rsdoi6GhCmDh pi2QPzqo4gfICjQpI2XDjMlMrChayjBV4GlvaOQu+h85iDz/CJVJYBQwSOSCFWGz3jeN l1IWCjpSqZMKtVd2bUqYYCVE0TYBoW9/m6aruohbX4r2NvtfozlCqLiSkg3J4nEx+Hzh ILEg== X-RZG-AUTH: ":P2EQZWCpfu+qG7CngxMFH1J+3q8wa/QXkBR9MXjAuzBW/OdlBZQ4AHSS3G1Jjw==" X-RZG-CLASS-ID: mo00 From: Olaf Hering To: xen-devel@lists.xenproject.org Cc: Olaf Hering , Ian Jackson , Wei Liu , Anthony PERARD Subject: [PATCH v1 18/23] tools/guest: restore: move map_errs array Date: Thu, 29 Oct 2020 18:19:58 +0100 Message-Id: <20201029172004.17219-19-olaf@aepfle.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201029172004.17219-1-olaf@aepfle.de> References: <20201029172004.17219-1-olaf@aepfle.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Remove allocation from hotpath, move map_errs array into preallocated space. Signed-off-by: Olaf Hering --- tools/libs/guest/xg_sr_common.h | 1 + tools/libs/guest/xg_sr_restore.c | 12 +----------- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/tools/libs/guest/xg_sr_common.h b/tools/libs/guest/xg_sr_commo= n.h index 5731a5c186..eba3a49877 100644 --- a/tools/libs/guest/xg_sr_common.h +++ b/tools/libs/guest/xg_sr_common.h @@ -229,6 +229,7 @@ struct xc_sr_restore_arrays { uint32_t types[MAX_BATCH_SIZE]; /* process_page_data */ xen_pfn_t mfns[MAX_BATCH_SIZE]; + int map_errs[MAX_BATCH_SIZE]; }; =20 struct xc_sr_context diff --git a/tools/libs/guest/xg_sr_restore.c b/tools/libs/guest/xg_sr_rest= ore.c index 3ba089f862..94c329032f 100644 --- a/tools/libs/guest/xg_sr_restore.c +++ b/tools/libs/guest/xg_sr_restore.c @@ -206,21 +206,13 @@ static int process_page_data(struct xc_sr_context *ct= x, unsigned int count, { xc_interface *xch =3D ctx->xch; xen_pfn_t *mfns =3D ctx->restore.m->mfns; - int *map_errs =3D malloc(count * sizeof(*map_errs)); + int *map_errs =3D ctx->restore.m->map_errs; int rc; void *mapping =3D NULL, *guest_page =3D NULL; unsigned int i, /* i indexes the pfns from the record. */ j, /* j indexes the subset of pfns we decide to map. */ nr_pages =3D 0; =20 - if ( !map_errs ) - { - rc =3D -1; - ERROR("Failed to allocate %zu bytes to process page data", - count * (sizeof(*mfns) + sizeof(*map_errs))); - goto err; - } - rc =3D populate_pfns(ctx, count, pfns, types); if ( rc ) { @@ -298,8 +290,6 @@ static int process_page_data(struct xc_sr_context *ctx,= unsigned int count, if ( mapping ) xenforeignmemory_unmap(xch->fmem, mapping, nr_pages); =20 - free(map_errs); - return rc; } =20