linux-kernel - Re: [PATCH v3 5/5] dax: add tracepoints to dax_pmd_insert

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Date:   Thu, 1 Dec 2016 11:56:55 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Ross Zwisler <ross.zwisler@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Chinner <david@...morbit.com>,
        Ingo Molnar <mingo@...hat.com>, Jan Kara <jack@...e.cz>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-nvdimm@...ts.01.org
Subject: Re: [PATCH v3 5/5] dax: add tracepoints to dax_pmd_insert_mapping()

On Thu,  1 Dec 2016 09:37:51 -0700
Ross Zwisler <ross.zwisler@...ux.intel.com> wrote:

> Add tracepoints to dax_pmd_insert_mapping(), following the same logging
> conventions as the tracepoints in dax_iomap_pmd_fault().
> 
> Here is an example PMD fault showing the new tracepoints:
> 
> big-1504  [001] ....   326.960743: xfs_filemap_pmd_fault: dev 259:0 ino
> 0x1003
> 
> big-1504  [001] ....   326.960753: dax_pmd_fault: dev 259:0 ino 0x1003
> shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start
> 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400
> 
> big-1504  [001] ....   326.960981: dax_pmd_insert_mapping: dev 259:0 ino
> 0x1003 shared write address 0x10505000 length 0x200000 pfn 0x100600 DEV|MAP
> radix_entry 0xc000e
> 
> big-1504  [001] ....   326.960986: dax_pmd_fault_done: dev 259:0 ino 0x1003
> shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start
> 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400 NOPAGE
> 
> Signed-off-by: Ross Zwisler <ross.zwisler@...ux.intel.com>
> Reviewed-by: Jan Kara <jack@...e.cz>
> ---

Acked-by: Steven Rostedt <rostedt@...dmis.org>

-- Steve