From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 6 Oct 2003 16:35:41 +0800 From: Eugene Teo Subject: Re: Code that does page outs Message-ID: <20031006083541.GA6365@despammed.com> Reply-To: Eugene Teo References: <20031006063253.GA5231@despammed.com> <20031006000201.1804ba97.pj@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031006000201.1804ba97.pj@sgi.com> Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org List-ID: Thanks Paul. Actually, I have identified, and read the code starting from try_to_swap_out, then swap_out_pmd, then swap_out_pgd, then swap_out_vma, then swap_out_mm, then swap_out, which returns the number of pages swapped out. I have also read shrink_cache and also took note of the number of pages swapped out. I am just wondering if I have missed out any portion of the mm that can lead to page being swap out. Anyhow, thank you for your tip for I have been using this website too, along with my other materials. > > I am looking for possible areas in the kernel code where ... > > May I recommend to you the site: > > Cross-Referencing Linux > http://lxr.linux.no > > For example, start with an "identifier search" on one of the symbols you > identified, try_to_swap_out: > > http://lxr.linux.no/ident?i=try_to_swap_out > > This page will show where it is defined, and what calls it. Examine the > code that defines try_to_swap_out(). Observe the critical between lines > 133 and 148 of this file, vmscan.c. This is where it gets a free swap > entry, get_swap_page(), and assigns the current page to that entry, > add_to_swap_cache(). > > I would expect that any other piece of code that wants to swap is going > to use those same routines, get_swap_page(), and add_to_swap_cache(). > Though examining these two routines in detail and what they call in turn > would help to verify that expectation. > > Then continue using lxr.linux.no to see what else, if anything, calls > this pair of routines: get_swap_page(), and add_to_swap_cache(). > > This will lead you to any other paths, if any, to swapping a page. > > -- > I won't rest till it's the best ... > Programmer, Linux Scalability > Paul Jackson 1.650.933.1373 > -- > 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/ . > Don't email: aart@kvack.org > -- Eugene TEO 1024D/14A0DDE5 print D851 4574 E357 469C D308 A01E 7321 A38A 14A0 DDE5 main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i); } -- 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/ . Don't email: aart@kvack.org