From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C51C94688 for ; Sat, 24 Feb 2024 01:49:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708739363; cv=none; b=dDsWZCBmsydqNCHSj3OuKISqo4wY32WSSvqPbe6hAt1oqRnAGi6+Mag84knrKQ2bzwF2mJ74aRSOde5imunE5i3fAsC76+fX5UJSSbgl0BQ1lGKrS8/zz+h8UiYe6v2ifzq91hobwSUv+btQH37NmK+YXubc58DMahbE+9welEQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708739363; c=relaxed/simple; bh=V79z6QWYZy8r4mKvujPmEnS97owcsCWLksYveDWah2M=; h=Date:To:From:Subject:Message-Id; b=u1r1LIEB1PM6IajdgnhRuvcxCCFRzl/c7FeYLP8Wl020OEJBdfHTCoq1+5qwH3JyMG6Y1cU9/QT5RKfi+ak3b+OGlf0eBQkwp1LTdpAxk0KoZtWd/IpjqsBoKUt0XJ3jyEeTWvWBh5m7FToR1Luz5HvJlTTWUKXLTFr/okznzS8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=H/c6RQRM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="H/c6RQRM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9077DC433F1; Sat, 24 Feb 2024 01:49:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1708739363; bh=V79z6QWYZy8r4mKvujPmEnS97owcsCWLksYveDWah2M=; h=Date:To:From:Subject:From; b=H/c6RQRMgnYptPHoJAOtfr0sCHj7g5neu3FBZjePle+VkOQkmeq/qRH6SGl++HguS QSSXium+0F9X+RyFwLQbKwqarKDKTJw/MQw9fOXM/kjukzpnNWWDVctjC5wAZKsv3T Ltv9pU6UmzZQpcTH1GJzg7cwh9MBcdbntJ5odfmE= Date: Fri, 23 Feb 2024 17:49:23 -0800 To: mm-commits@vger.kernel.org,vbabka@suse.cz,mhocko@suse.com,glider@google.com,elver@google.com,andreyknvl@gmail.com,osalvador@suse.de,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mmpage_owner-filter-out-stacks-by-a-threshold.patch removed from -mm tree Message-Id: <20240224014923.9077DC433F1@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm,page_owner: filter out stacks by a threshold has been removed from the -mm tree. Its filename was mmpage_owner-filter-out-stacks-by-a-threshold.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Oscar Salvador Subject: mm,page_owner: filter out stacks by a threshold Date: Thu, 15 Feb 2024 22:59:06 +0100 We want to be able to filter out the stacks based on a threshold we can can tune. By writing to 'count_threshold' file, we can adjust the threshold value. Link: https://lkml.kernel.org/r/20240215215907.20121-7-osalvador@suse.de Signed-off-by: Oscar Salvador Reviewed-by: Vlastimil Babka Acked-by: Andrey Konovalov Cc: Alexander Potapenko Cc: Marco Elver Cc: Michal Hocko Signed-off-by: Andrew Morton --- mm/page_owner.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) --- a/mm/page_owner.c~mmpage_owner-filter-out-stacks-by-a-threshold +++ a/mm/page_owner.c @@ -846,6 +846,8 @@ static void *stack_next(struct seq_file return stack; } +static unsigned long page_owner_stack_threshold; + static int stack_print(struct seq_file *m, void *v) { int i, stack_count; @@ -858,7 +860,8 @@ static int stack_print(struct seq_file * entries = stack_record->entries; stack_count = refcount_read(&stack_record->count) - 1; - if (!nr_entries || nr_entries < 0 || stack_count < 1) + if (!nr_entries || nr_entries < 0 || stack_count < 1 || + stack_count < page_owner_stack_threshold) return 0; for (i = 0; i < nr_entries; i++) @@ -891,6 +894,22 @@ static const struct file_operations page .release = seq_release, }; +static int page_owner_threshold_get(void *data, u64 *val) +{ + *val = READ_ONCE(page_owner_stack_threshold); + return 0; +} + +static int page_owner_threshold_set(void *data, u64 val) +{ + WRITE_ONCE(page_owner_stack_threshold, val); + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(proc_page_owner_threshold, &page_owner_threshold_get, + &page_owner_threshold_set, "%llu"); + + static int __init pageowner_init(void) { struct dentry *dir; @@ -905,6 +924,8 @@ static int __init pageowner_init(void) dir = debugfs_create_dir("page_owner_stacks", NULL); debugfs_create_file("show_stacks", 0400, dir, NULL, &page_owner_stack_operations); + debugfs_create_file("count_threshold", 0600, dir, NULL, + &proc_page_owner_threshold); return 0; } _ Patches currently in -mm which might be from osalvador@suse.de are