Messages in this thread | | | From | ZhangNeil <> | Subject | RE: [PATCH v2] mm: show free pages per each migrate type | Date | Sun, 12 Apr 2015 07:17:11 +0000 |
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---------------------------------------- > Date: Thu, 9 Apr 2015 21:24:41 -0700 > From: akpm@linux-foundation.org > To: neilzhang1123@hotmail.com > CC: linux-mm@kvack.org; linux-kernel@vger.kernel.org > Subject: Re: [PATCH v2] mm: show free pages per each migrate type > > On Fri, 10 Apr 2015 04:16:15 +0000 ZhangNeil <neilzhang1123@hotmail.com> wrote: > >>> I think we can eliminate nr_free[][]: >> >> what about make it as global__variable? > > That isn't as good - it permanently consumes memory and really requires > new locking to protect the array from concurrent callers. >
Then it may need to change the code a lot.
BTW: I calculate the nr_free[][] again, it is an 6x11 array of 8 in the worst case, that is 528B, is it acceptable?
Best Regards, Neil Zhang
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