From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 5B4ED8D0039 for ; Wed, 9 Feb 2011 14:54:22 -0500 (EST) Received: from d01dlp01.pok.ibm.com (d01dlp01.pok.ibm.com [9.56.224.56]) by e5.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id p19JUFBl015181 for ; Wed, 9 Feb 2011 14:30:17 -0500 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id 71F2E728063 for ; Wed, 9 Feb 2011 14:54:19 -0500 (EST) Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d01relay02.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p19JsIEw449608 for ; Wed, 9 Feb 2011 14:54:19 -0500 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p19JsHdV030562 for ; Wed, 9 Feb 2011 12:54:18 -0700 Subject: [PATCH 5/5] have smaps show transparent huge pages From: Dave Hansen Date: Wed, 09 Feb 2011 11:54:13 -0800 References: <20110209195406.B9F23C9F@kernel> In-Reply-To: <20110209195406.B9F23C9F@kernel> Message-Id: <20110209195413.6D3CB37F@kernel> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, Michael J Wolf , Andrea Arcangeli , Dave Hansen , Johannes Weiner , David Rientjes Now that the mere act of _looking_ at /proc/$pid/smaps will not destroy transparent huge pages, tell how much of the VMA is actually mapped with them. This way, we can make sure that we're getting THPs where we expect to see them. Signed-off-by: Dave Hansen Acked-by: David Rientjes --- linux-2.6.git-dave/fs/proc/task_mmu.c | 4 ++++ 1 file changed, 4 insertions(+) diff -puN fs/proc/task_mmu.c~teach-smaps-thp fs/proc/task_mmu.c --- linux-2.6.git/fs/proc/task_mmu.c~teach-smaps-thp 2011-02-09 11:41:44.423556779 -0800 +++ linux-2.6.git-dave/fs/proc/task_mmu.c 2011-02-09 11:41:52.611550670 -0800 @@ -331,6 +331,7 @@ struct mem_size_stats { unsigned long private_dirty; unsigned long referenced; unsigned long anonymous; + unsigned long anonymous_thp; unsigned long swap; u64 pss; }; @@ -394,6 +395,7 @@ static int smaps_pte_range(pmd_t *pmd, u spin_lock(&walk->mm->page_table_lock); } else { smaps_pte_entry(*(pte_t *)pmd, addr, HPAGE_SIZE, walk); + mss->anonymous_thp += HPAGE_SIZE; return 0; } } @@ -435,6 +437,7 @@ static int show_smap(struct seq_file *m, "Private_Dirty: %8lu kB\n" "Referenced: %8lu kB\n" "Anonymous: %8lu kB\n" + "AnonHugePages: %8lu kB\n" "Swap: %8lu kB\n" "KernelPageSize: %8lu kB\n" "MMUPageSize: %8lu kB\n" @@ -448,6 +451,7 @@ static int show_smap(struct seq_file *m, mss.private_dirty >> 10, mss.referenced >> 10, mss.anonymous >> 10, + mss.anonymous_thp >> 10, mss.swap >> 10, vma_kernel_pagesize(vma) >> 10, vma_mmu_pagesize(vma) >> 10, _ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org