From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wu Fengguang Subject: [PATCH 11/35] writeback: show bdi write bandwidth in debugfs Date: Mon, 13 Dec 2010 22:46:57 +0800 Message-ID: <20101213150327.692180857@intel.com> References: <20101213144646.341970461@intel.com> Return-path: Received: from kanga.kvack.org ([205.233.56.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PSA1I-0001b7-7x for glkm-linux-mm-2@m.gmane.org; Mon, 13 Dec 2010 16:08:56 +0100 Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 169EE6B0093 for ; Mon, 13 Dec 2010 10:08:48 -0500 (EST) Content-Disposition: inline; filename=writeback-bandwidth-show.patch Sender: owner-linux-mm@kvack.org To: Andrew Morton Cc: Jan Kara , Theodore Tso , Peter Zijlstra , Wu Fengguang , Christoph Hellwig , Trond Myklebust , Dave Chinner , Chris Mason , Mel Gorman , Rik van Riel , KOSAKI Motohiro , Greg Thelen , Minchan Kim , linux-mm , linux-fsdevel@vger.kernel.org, LKML List-Id: linux-mm.kvack.org Add a "BdiWriteBandwidth" entry (and indent others) in /debug/bdi/*/stats. btw increase digital field width to 10, for keeping the possibly huge BdiWritten number aligned at least for desktop systems. This will break user space tools if they are dumb enough to depend on the number of white spaces. CC: Theodore Ts'o CC: Jan Kara CC: Peter Zijlstra Signed-off-by: Wu Fengguang --- mm/backing-dev.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) --- linux-next.orig/mm/backing-dev.c 2010-12-13 21:46:14.000000000 +0800 +++ linux-next/mm/backing-dev.c 2010-12-13 21:46:14.000000000 +0800 @@ -87,21 +87,23 @@ static int bdi_debug_stats_show(struct s #define K(x) ((x) << (PAGE_SHIFT - 10)) seq_printf(m, - "BdiWriteback: %8lu kB\n" - "BdiReclaimable: %8lu kB\n" - "BdiDirtyThresh: %8lu kB\n" - "DirtyThresh: %8lu kB\n" - "BackgroundThresh: %8lu kB\n" - "BdiWritten: %8lu kB\n" - "b_dirty: %8lu\n" - "b_io: %8lu\n" - "b_more_io: %8lu\n" - "bdi_list: %8u\n" - "state: %8lx\n", + "BdiWriteback: %10lu kB\n" + "BdiReclaimable: %10lu kB\n" + "BdiDirtyThresh: %10lu kB\n" + "DirtyThresh: %10lu kB\n" + "BackgroundThresh: %10lu kB\n" + "BdiWritten: %10lu kB\n" + "BdiWriteBandwidth: %10lu kBps\n" + "b_dirty: %10lu\n" + "b_io: %10lu\n" + "b_more_io: %10lu\n" + "bdi_list: %10u\n" + "state: %10lx\n", (unsigned long) K(bdi_stat(bdi, BDI_WRITEBACK)), (unsigned long) K(bdi_stat(bdi, BDI_RECLAIMABLE)), K(bdi_thresh), K(dirty_thresh), K(background_thresh), (unsigned long) K(bdi_stat(bdi, BDI_WRITTEN)), + (unsigned long) K(bdi->write_bandwidth), nr_dirty, nr_io, nr_more_io, !list_empty(&bdi->bdi_list), bdi->state); #undef K -- 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 policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org