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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1702004191; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Pp4e2f1m5xzOKYlTpY9BWRD9Si0GcTtJwwlQEj1BdUw=; b=xCPbD/P/C8PYRd/iq7qfzqNK7O0vfM4mGjzdmECDhFGARzzFYf7ZUvm3GJRa/0jylY7zUT N3Cjp/IbGSXRZjSJwSaNafZSlWhPPcdcKRiXSe/Rf6LKUweMgiwkUisLIKD6Z6m69WS41p OKm5SMXqb5fUw2uMJ7ByFbDYnO/E6Mw= From: Gang Li To: David Rientjes Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, ligang.bdlg@bytedance.com, Gang Li Subject: [PATCH 1/1] hugetlb: add timing to hugetlb allocations on boot Date: Fri, 8 Dec 2023 10:56:17 +0800 Message-Id: <20231208025617.5299-1-gang.li@linux.dev> In-Reply-To: <20231208025240.4744-1-gang.li@linux.dev> References: <20231208025240.4744-1-gang.li@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: AC4A514000B X-Stat-Signature: ssnjq5atncyweknk3zpnz8wtuf7x1mxf X-HE-Tag: 1702004193-353619 X-HE-Meta: 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 MAQaXHdI 8HW2N4UX+NhYfp3yfQbi1/LiWGTfMZpTjJJJ+ysWim8lgHLc3YGfK6/DXm3vqezV+n2hZ9xrcd9lkbGw= 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: List-Subscribe: List-Unsubscribe: Add timing to hugetlb allocations for further optimization. Debug only. Signed-off-by: Gang Li --- mm/hugetlb.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 1169ef2f2176f..51f50bb3dc092 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -4490,6 +4490,7 @@ static inline void hugetlb_sysctl_init(void) { } static int __init hugetlb_init(void) { int i; + unsigned long start; BUILD_BUG_ON(sizeof_field(struct page, private) * BITS_PER_BYTE < __NR_HPAGEFLAGS); @@ -4536,8 +4537,11 @@ static int __init hugetlb_init(void) } hugetlb_cma_check(); + start = jiffies; hugetlb_init_hstates(); gather_bootmem_prealloc(); + pr_info("HugeTLB: 2M alloc, init and 1G init takes %u ms\n", + jiffies_to_msecs(jiffies - start)); report_hugepages(); hugetlb_sysfs_init(); @@ -4682,6 +4686,7 @@ static int __init hugepages_setup(char *s) } } + unsigned long start = jiffies; /* * Global state is always initialized later in hugetlb_init. * But we need to allocate gigantic hstates here early to still @@ -4692,6 +4697,7 @@ static int __init hugepages_setup(char *s) last_mhp = mhp; + pr_info("HugeTLB: 1G alloc takes %u ms\n", jiffies_to_msecs(jiffies - start)); return 1; invalid: -- 2.30.2