From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: ARC-Seal: i=1; a=rsa-sha256; t=1522397823; cv=none; d=google.com; s=arc-20160816; b=r3gxrTAULU1sEaadbBFr0SqFG6UzY9pdKxfimqQa56bPaC7+lpqHzXAjYZMdq3TWGi OVQOyFsf1pFIJUdGI+xpnTO126st6fO23gpOyNIQeUtsoGEyx9gWECIbgoC2Pqtu+qdy MPcJZmSWOCkR0zpkI05LfT9vKx8es7MxkczkUT26SyWXirvT/J7nHgsnYImA/ihY9Gb1 F7nlNeknXAOnOKeqsZJtHS/k2/PSlv+krjtEgZ+byfmRR32tmwl1rxtvwNYCUNjDt304 hOmiNSTgXf7WpqpX8/sDQoE2HzCGztl8o+kC7awTwzykvxSiC5lwVjEVhipEsyvPqo1l XnAA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:arc-authentication-results; bh=qp5NKpTdcRM6Rau/uqwRW72+6gftVpoNr2Kh3FeSdLk=; b=KshiIh9vlzDaOmTig2DfsswC9gb/wxsNdeT7HKF3QjaU/FvLe1R+alyPQQP6pDSecQ DLysppsFBd5C1Uk55uLRKlrtsrvUqsF/JhBF8kxmMhlp25kHM+W9FcGBKDWqprbT/17l difBaIVT7sv6MnNQGnNFMkN/sZSDKr/H1T8BXJuMo+IOYljGaaPgFzoeM2QswTVKkenC wZlAp4ru01dnKEyG1pZnhHghPR3rYAwoEXsrZ31Hw/JSk5qARYdBa95ZXp1mYb+yedrR syWLFg9N0Rwty9osX+ugjFmMBgQM2VU0IVmrwkPLBfsY4qhEHgb0BCL23CTOzhoXdmnB XmfA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=mVkfziFH; spf=pass (google.com: domain of hejianet@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=hejianet@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=mVkfziFH; spf=pass (google.com: domain of hejianet@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=hejianet@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com X-Google-Smtp-Source: AIpwx4/EpwqQ2BYQnuzuswGVHM7PlY3i/PJmfcSFEFIRKWfO8Y4KeWIvSPeM+/u0dZ9Pss2tuN3/9w== From: Jia He To: Russell King , Andrew Morton , Michal Hocko , Catalin Marinas , Mel Gorman , Will Deacon , Mark Rutland , "H. Peter Anvin" Cc: Pavel Tatashin , Daniel Jordan , AKASHI Takahiro , Gioh Kim , Steven Sistare , Daniel Vacek , Eugeniu Rosca , Vlastimil Babka , linux-kernel@vger.kernel.org, linux-mm@kvack.org, James Morse , Ard Biesheuvel , Steve Capper , Thomas Gleixner , Ingo Molnar , x86@kernel.org, Greg Kroah-Hartman , Kate Stewart , Philippe Ombredanne , Johannes Weiner , Kemi Wang , Petr Tesarik , YASUAKI ISHIMATSU , Andrey Ryabinin , Nikolay Borisov , richard.weiyang@gmail.com, Jia He , Jia He Subject: [PATCH v4 3/5] mm/memblock: introduce memblock_search_pfn_regions() Date: Fri, 30 Mar 2018 01:15:53 -0700 Message-Id: <1522397755-33393-4-git-send-email-hejianet@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1522397755-33393-1-git-send-email-hejianet@gmail.com> References: <1522397755-33393-1-git-send-email-hejianet@gmail.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1596349819957995721?= X-GMAIL-MSGID: =?utf-8?q?1596349819957995721?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: This api is the preparation for further optimizing early_pfn_valid Signed-off-by: Jia He --- include/linux/memblock.h | 2 ++ mm/memblock.c | 9 +++++++++ 2 files changed, 11 insertions(+) diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 0257aee..a0127b3 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -203,6 +203,8 @@ void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid)) #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ +int memblock_search_pfn_regions(unsigned long pfn); + /** * for_each_free_mem_range - iterate through free memblock areas * @i: u64 used as loop variable diff --git a/mm/memblock.c b/mm/memblock.c index ba7c878..0f4004c 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -1617,6 +1617,15 @@ static int __init_memblock memblock_search(struct memblock_type *type, phys_addr return -1; } +/* search memblock with the input pfn, return the region idx */ +int __init_memblock memblock_search_pfn_regions(unsigned long pfn) +{ + struct memblock_type *type = &memblock.memory; + int mid = memblock_search(type, PFN_PHYS(pfn)); + + return mid; +} + bool __init memblock_is_reserved(phys_addr_t addr) { return memblock_search(&memblock.reserved, addr) != -1; -- 2.7.4