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David Alan Gilbert" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, James Houghton Content-Type: text/plain; charset="UTF-8" ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=SJaLm0Xr; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf12.hostedemail.com: domain of 3U_a1YgoKCDQZjXekWXjedWeeWbU.SecbYdkn-ccalQSa.ehW@flex--jthoughton.bounces.google.com designates 209.85.221.202 as permitted sender) smtp.mailfrom=3U_a1YgoKCDQZjXekWXjedWeeWbU.SecbYdkn-ccalQSa.ehW@flex--jthoughton.bounces.google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1656092244; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=BHwQikGJ0T9dngSuqajvJzRNJRNB+p1hBOZL6v8gtdU=; b=dJQrf05ls5K263dIbr3X1K0tJkr6eC+ajGanplrdJymGifURw2wZPpltTTqO2nKt06guLq 3TwJKvN1hqTbYo2hibMvl3z/+xH3xuiwMVO9zZ2h2BqYAZcMDU8srnm2xBMSqEYHaziKBb CpRO++r3sGkgduJd4PmyYDdmhA0V4Bs= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1656092244; a=rsa-sha256; cv=none; b=GD1FohfoUvv5K4HQ1hy1O4Dr72L88hNS5xendNh5//pL0m3UbDhoyo7F8INCobQgZkusHB 7HpmYmNssjOxAR8k6JGFp8D8sugMDFKyjoPxspw8dGud9bhJCUUJkZwcd1JOiwOKsNdK6J MAp5Makakzz2C/W7i3N2Wg/gxbO+QGc= X-Stat-Signature: ni8aiim9ez44zct6uycyhd5eherd7e4i X-Rspamd-Queue-Id: 5C95240019 X-Rspam-User: Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=SJaLm0Xr; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf12.hostedemail.com: domain of 3U_a1YgoKCDQZjXekWXjedWeeWbU.SecbYdkn-ccalQSa.ehW@flex--jthoughton.bounces.google.com designates 209.85.221.202 as permitted sender) smtp.mailfrom=3U_a1YgoKCDQZjXekWXjedWeeWbU.SecbYdkn-ccalQSa.ehW@flex--jthoughton.bounces.google.com X-Rspamd-Server: rspam12 X-HE-Tag: 1656092244-176499 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This is a helper macro to loop through all the usable page sizes for a high-granularity-enabled HugeTLB VMA. Given the VMA's hstate, it will loop, in descending order, through the page sizes that HugeTLB supports for this architecture; it always includes PAGE_SIZE. Signed-off-by: James Houghton --- mm/hugetlb.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 8b10b941458d..557b0afdb503 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6989,6 +6989,16 @@ bool hugetlb_hgm_enabled(struct vm_area_struct *vma) /* All shared VMAs have HGM enabled. */ return vma->vm_flags & VM_SHARED; } +static unsigned int __shift_for_hstate(struct hstate *h) +{ + if (h >= &hstates[hugetlb_max_hstate]) + return PAGE_SHIFT; + return huge_page_shift(h); +} +#define for_each_hgm_shift(hstate, tmp_h, shift) \ + for ((tmp_h) = hstate; (shift) = __shift_for_hstate(tmp_h), \ + (tmp_h) <= &hstates[hugetlb_max_hstate]; \ + (tmp_h)++) #endif /* CONFIG_HUGETLB_HIGH_GRANULARITY_MAPPING */ /* -- 2.37.0.rc0.161.g10f37bed90-goog