From patchwork Thu Jan 5 21:46:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 13090517 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9EFAEC54EBC for ; Thu, 5 Jan 2023 21:46:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235954AbjAEVqq (ORCPT ); Thu, 5 Jan 2023 16:46:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235925AbjAEVqe (ORCPT ); Thu, 5 Jan 2023 16:46:34 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7AFE9676E3 for ; Thu, 5 Jan 2023 13:46:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=lIvmCZwUtoaJt3sVXDitSXE8d8gXr+dU43z7S3YDxXs=; b=B0IMstPJlBu52FY/hGCEU+rl1I 1ap69no2R6a6XhkeNItIdR2rft9M2zgmBoE/u2YUEeJNSzZKFREAk8WkLrarDxNRepQ+3MNcVtZJ3 B5PFK3exUtbdWYd5nOXRi5e2YLaOdOi1DrxRPpMrySOs8F8dCX9nB1qsKWzOu4gwdiugDnWB5bqcd kCo0I8FQpubPkvZunuUjPvey4ILDed1IfpedFMxHAHRxulsdRFL8N/AEgtaqWGqnYSnmilhN3MT8V U+jCg3bWkGb2WRbaaPxM4p/48JCvhFId2Bl3K7TE46rQsDGid0bdvaAVLAyh9fEiLAUZjY6JSuVNO 1F5VBhjg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pDY4I-00GWnz-Uf; Thu, 05 Jan 2023 21:46:35 +0000 From: "Matthew Wilcox (Oracle)" To: Jesper Dangaard Brouer , Ilias Apalodimas Cc: "Matthew Wilcox (Oracle)" , netdev@vger.kernel.org, linux-mm@kvack.org, Shakeel Butt Subject: [PATCH v2 17/24] page_pool: Convert page_pool_return_skb_page() to use netmem Date: Thu, 5 Jan 2023 21:46:24 +0000 Message-Id: <20230105214631.3939268-18-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230105214631.3939268-1-willy@infradead.org> References: <20230105214631.3939268-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This function accesses the pagepool members of struct page directly, so it needs to become netmem. Add page_pool_put_full_netmem() and page_pool_recycle_netmem(). Signed-off-by: Matthew Wilcox (Oracle) --- include/net/page_pool.h | 14 +++++++++++++- net/core/page_pool.c | 13 ++++++------- 2 files changed, 19 insertions(+), 8 deletions(-) diff --git a/include/net/page_pool.h b/include/net/page_pool.h index fbb653c9f1da..126c04315929 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -464,10 +464,16 @@ static inline void page_pool_put_page(struct page_pool *pool, } /* Same as above but will try to sync the entire area pool->max_len */ +static inline void page_pool_put_full_netmem(struct page_pool *pool, + struct netmem *nmem, bool allow_direct) +{ + page_pool_put_netmem(pool, nmem, -1, allow_direct); +} + static inline void page_pool_put_full_page(struct page_pool *pool, struct page *page, bool allow_direct) { - page_pool_put_page(pool, page, -1, allow_direct); + page_pool_put_full_netmem(pool, page_netmem(page), allow_direct); } /* Same as above but the caller must guarantee safe context. e.g NAPI */ @@ -477,6 +483,12 @@ static inline void page_pool_recycle_direct(struct page_pool *pool, page_pool_put_full_page(pool, page, true); } +static inline void page_pool_recycle_netmem(struct page_pool *pool, + struct netmem *nmem) +{ + page_pool_put_full_netmem(pool, nmem, true); +} + #define PAGE_POOL_DMA_USE_PP_FRAG_COUNT \ (sizeof(dma_addr_t) > sizeof(unsigned long)) diff --git a/net/core/page_pool.c b/net/core/page_pool.c index cd469a9970e7..ddf9f2bb85f7 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -886,28 +886,27 @@ EXPORT_SYMBOL(page_pool_update_nid); bool page_pool_return_skb_page(struct page *page) { + struct netmem *nmem = page_netmem(compound_head(page)); struct page_pool *pp; - page = compound_head(page); - - /* page->pp_magic is OR'ed with PP_SIGNATURE after the allocation + /* nmem->pp_magic is OR'ed with PP_SIGNATURE after the allocation * in order to preserve any existing bits, such as bit 0 for the * head page of compound page and bit 1 for pfmemalloc page, so * mask those bits for freeing side when doing below checking, - * and page_is_pfmemalloc() is checked in __page_pool_put_page() + * and netmem_is_pfmemalloc() is checked in __page_pool_put_netmem() * to avoid recycling the pfmemalloc page. */ - if (unlikely((page->pp_magic & ~0x3UL) != PP_SIGNATURE)) + if (unlikely((nmem->pp_magic & ~0x3UL) != PP_SIGNATURE)) return false; - pp = page->pp; + pp = nmem->pp; /* Driver set this to memory recycling info. Reset it on recycle. * This will *not* work for NIC using a split-page memory model. * The page will be returned to the pool here regardless of the * 'flipped' fragment being in use or not. */ - page_pool_put_full_page(pp, page, false); + page_pool_put_full_netmem(pp, nmem, false); return true; }