From patchwork Wed Nov 30 22:07:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 13060494 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 6DC28C4321E for ; Wed, 30 Nov 2022 22:08:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229851AbiK3WIr (ORCPT ); Wed, 30 Nov 2022 17:08:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229812AbiK3WI1 (ORCPT ); Wed, 30 Nov 2022 17:08:27 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1AA4C92A3F for ; Wed, 30 Nov 2022 14:08:16 -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=C/sNw3veMKtURCiokaJ/pKwRw1nL+1aLdsvQ8DTvuXU=; b=Y2Vnb4q6B2LdiNZqzDkLmgkd5G oCHJ0xUNeKs/dX0mnLHSVVQ0m+7vvvsIwq+5+MPmYSoXhlQYlPYezaywNAgpnosOMkqrpTFsAliaS F7Lz5ggiPxWHlsZfgWK348a0JqDAKf0AWkaSgrqrzeLlJ/N46vF4a+XcE0m1kxc1hWA+jox+fsSYl FNE4C1o/rK8w1TpGrW+TaIBmlwCeFhhQ2xySgFyRSoZC61WXyr5TLVvF9RSAfUdEpPSR3itFZEcD0 rgK0i9vcLSdhGjtRh+0EzKyie7SyCbulwBgi+SfDWw+F9WEsJJN4cuL6yQKdhnAEzpI8xIGjmCtYP Get9KnLw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0VFN-00FLVQ-Dp; Wed, 30 Nov 2022 22:08:05 +0000 From: "Matthew Wilcox (Oracle)" To: Jesper Dangaard Brouer , Ilias Apalodimas Cc: "Matthew Wilcox (Oracle)" , netdev@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 10/24] page_pool: Convert page_pool_put_defragged_page() to netmem Date: Wed, 30 Nov 2022 22:07:49 +0000 Message-Id: <20221130220803.3657490-11-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20221130220803.3657490-1-willy@infradead.org> References: <20221130220803.3657490-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Also convert page_pool_is_last_frag(), page_pool_put_page(), page_pool_recycle_in_ring() and use netmem in page_pool_put_page_bulk(). Signed-off-by: Matthew Wilcox (Oracle) --- include/net/page_pool.h | 23 ++++++++++++++++------- net/core/page_pool.c | 29 +++++++++++++++-------------- 2 files changed, 31 insertions(+), 21 deletions(-) diff --git a/include/net/page_pool.h b/include/net/page_pool.h index bfb77b75f333..db617073025e 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -362,7 +362,7 @@ static inline void page_pool_release_page(struct page_pool *pool, page_pool_release_netmem(pool, page_netmem(page)); } -void page_pool_put_defragged_page(struct page_pool *pool, struct page *page, +void page_pool_put_defragged_netmem(struct page_pool *pool, struct netmem *nmem, unsigned int dma_sync_size, bool allow_direct); @@ -398,15 +398,15 @@ static inline long page_pool_defrag_page(struct page *page, long nr) } static inline bool page_pool_is_last_frag(struct page_pool *pool, - struct page *page) + struct netmem *nmem) { /* If fragments aren't enabled or count is 0 we were the last user */ return !(pool->p.flags & PP_FLAG_PAGE_FRAG) || - (page_pool_defrag_page(page, 1) == 0); + (page_pool_defrag_netmem(nmem, 1) == 0); } -static inline void page_pool_put_page(struct page_pool *pool, - struct page *page, +static inline void page_pool_put_netmem(struct page_pool *pool, + struct netmem *nmem, unsigned int dma_sync_size, bool allow_direct) { @@ -414,13 +414,22 @@ static inline void page_pool_put_page(struct page_pool *pool, * allow registering MEM_TYPE_PAGE_POOL, but shield linker. */ #ifdef CONFIG_PAGE_POOL - if (!page_pool_is_last_frag(pool, page)) + if (!page_pool_is_last_frag(pool, nmem)) return; - page_pool_put_defragged_page(pool, page, dma_sync_size, allow_direct); + page_pool_put_defragged_netmem(pool, nmem, dma_sync_size, allow_direct); #endif } +static inline void page_pool_put_page(struct page_pool *pool, + struct page *page, + unsigned int dma_sync_size, + bool allow_direct) +{ + page_pool_put_netmem(pool, page_netmem(page), dma_sync_size, + allow_direct); +} + /* Same as above but will try to sync the entire area pool->max_len */ static inline void page_pool_put_full_page(struct page_pool *pool, struct page *page, bool allow_direct) diff --git a/net/core/page_pool.c b/net/core/page_pool.c index c54217ce6b77..e727a74504c2 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -516,14 +516,15 @@ static void page_pool_return_netmem(struct page_pool *pool, struct netmem *nmem) */ } -static bool page_pool_recycle_in_ring(struct page_pool *pool, struct page *page) +static bool page_pool_recycle_in_ring(struct page_pool *pool, + struct netmem *nmem) { int ret; /* BH protection not needed if current is serving softirq */ if (in_serving_softirq()) - ret = ptr_ring_produce(&pool->ring, page); + ret = ptr_ring_produce(&pool->ring, nmem); else - ret = ptr_ring_produce_bh(&pool->ring, page); + ret = ptr_ring_produce_bh(&pool->ring, nmem); if (!ret) { recycle_stat_inc(pool, ring); @@ -615,17 +616,17 @@ __page_pool_put_page(struct page_pool *pool, struct page *page, dma_sync_size, allow_direct)); } -void page_pool_put_defragged_page(struct page_pool *pool, struct page *page, +void page_pool_put_defragged_netmem(struct page_pool *pool, struct netmem *nmem, unsigned int dma_sync_size, bool allow_direct) { - page = __page_pool_put_page(pool, page, dma_sync_size, allow_direct); - if (page && !page_pool_recycle_in_ring(pool, page)) { + nmem = __page_pool_put_netmem(pool, nmem, dma_sync_size, allow_direct); + if (nmem && !page_pool_recycle_in_ring(pool, nmem)) { /* Cache full, fallback to free pages */ recycle_stat_inc(pool, ring_full); - page_pool_return_page(pool, page); + page_pool_return_netmem(pool, nmem); } } -EXPORT_SYMBOL(page_pool_put_defragged_page); +EXPORT_SYMBOL(page_pool_put_defragged_netmem); /* Caller must not use data area after call, as this function overwrites it */ void page_pool_put_page_bulk(struct page_pool *pool, void **data, @@ -634,16 +635,16 @@ void page_pool_put_page_bulk(struct page_pool *pool, void **data, int i, bulk_len = 0; for (i = 0; i < count; i++) { - struct page *page = virt_to_head_page(data[i]); + struct netmem *nmem = virt_to_netmem(data[i]); /* It is not the last user for the page frag case */ - if (!page_pool_is_last_frag(pool, page)) + if (!page_pool_is_last_frag(pool, nmem)) continue; - page = __page_pool_put_page(pool, page, -1, false); + nmem = __page_pool_put_netmem(pool, nmem, -1, false); /* Approved for bulk recycling in ptr_ring cache */ - if (page) - data[bulk_len++] = page; + if (nmem) + data[bulk_len++] = nmem; } if (unlikely(!bulk_len)) @@ -669,7 +670,7 @@ void page_pool_put_page_bulk(struct page_pool *pool, void **data, * since put_page() with refcnt == 1 can be an expensive operation */ for (; i < bulk_len; i++) - page_pool_return_page(pool, data[i]); + page_pool_return_netmem(pool, data[i]); } EXPORT_SYMBOL(page_pool_put_page_bulk);