From: Dave Hansen <dave.hansen@intel.com>
To: Shaohua Li <shli@fb.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: Kernel-team@fb.com, mhocko@suse.com, minchan@kernel.org,
hughd@google.com, hannes@cmpxchg.org, riel@redhat.com,
mgorman@techsingularity.net, akpm@linux-foundation.org
Subject: Re: [PATCH V4 6/6] proc: show MADV_FREE pages info in smaps
Date: Fri, 24 Feb 2017 09:08:30 -0800 [thread overview]
Message-ID: <e118502c-6be7-2ca5-bd3c-1f390a3961df@intel.com> (raw)
In-Reply-To: <7f22d33b2f388ce33448faa75be75f9a52d57052.1487788131.git.shli@fb.com>
On 02/22/2017 10:50 AM, Shaohua Li wrote:
> @@ -770,6 +774,7 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
> "Private_Dirty: %8lu kB\n"
> "Referenced: %8lu kB\n"
> "Anonymous: %8lu kB\n"
> + "LazyFree: %8lu kB\n"
> "AnonHugePages: %8lu kB\n"
> "ShmemPmdMapped: %8lu kB\n"
> "Shared_Hugetlb: %8lu kB\n"
I've been as guily of this in the past as anyone, but are we just going
to keep adding fields to smaps forever? For the vast, vast, majority of
folks, this will simply waste the 21 bytes * nr_vmas that it costs us to
print "LazyFree: 0 kB\n" over and over.
Should we maybe start a habit of not printing an entry when it's "0 kB"?
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next prev parent reply other threads:[~2017-02-24 17:08 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-22 18:50 [PATCH V4 0/6] mm: fix some MADV_FREE issues Shaohua Li
2017-02-22 18:50 ` [PATCH V4 1/6] mm: delete unnecessary TTU_* flags Shaohua Li
2017-02-23 15:35 ` Johannes Weiner
2017-02-24 1:25 ` Minchan Kim
2017-02-24 3:29 ` Hillf Danton
2017-02-22 18:50 ` [PATCH V4 2/6] mm: don't assume anonymous pages have SwapBacked flag Shaohua Li
2017-02-22 18:50 ` [PATCH V4 3/6] mm: move MADV_FREE pages into LRU_INACTIVE_FILE list Shaohua Li
2017-02-23 15:58 ` Johannes Weiner
2017-02-23 16:26 ` Shaohua Li
2017-02-23 18:22 ` Johannes Weiner
2017-02-23 19:04 ` Shaohua Li
2017-02-24 1:49 ` Minchan Kim
2017-02-24 6:15 ` Shaohua Li
2017-02-24 23:37 ` Minchan Kim
2017-02-22 18:50 ` [PATCH V4 4/6] mm: reclaim MADV_FREE pages Shaohua Li
2017-02-23 16:13 ` Johannes Weiner
2017-02-23 17:19 ` Shaohua Li
2017-02-24 2:12 ` Minchan Kim
2017-02-24 6:14 ` Shaohua Li
2017-02-24 15:36 ` Johannes Weiner
2017-02-24 23:26 ` Minchan Kim
2017-02-22 18:50 ` [PATCH V4 5/6] mm: enable MADV_FREE for swapless system Shaohua Li
2017-02-22 18:50 ` [PATCH V4 6/6] proc: show MADV_FREE pages info in smaps Shaohua Li
2017-02-23 16:16 ` Johannes Weiner
2017-02-24 2:13 ` Minchan Kim
2017-02-24 17:08 ` Dave Hansen [this message]
2017-02-24 21:47 ` Shaohua Li
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