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[64.229.95.98]) by smtp.gmail.com with ESMTPSA id d128sm11777070iof.37.2018.11.20.16.35.17 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 20 Nov 2018 16:35:17 -0800 (PST) Sender: Mark Johnston Date: Tue, 20 Nov 2018 19:35:15 -0500 From: Mark Johnston To: Ben Widawsky Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r340709 - in head/sys: compat/linuxkpi/common/include/linux vm Message-ID: <20181121003515.GE2630@raichu> References: <201811202249.wAKMnJxH082469@repo.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201811202249.wAKMnJxH082469@repo.freebsd.org> User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: EB7DD8C69F X-Spamd-Result: default: False [-4.84 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[gmail.com]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; DMARC_NA(0.00)[freebsd.org]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-0.999,0]; RCVD_COUNT_THREE(0.00)[3]; IP_SCORE(-2.15)[ip: (-6.70), ipnet: 2607:f8b0::/32(-2.38), asn: 15169(-1.58), country: US(-0.09)]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; DKIM_TRACE(0.00)[gmail.com:+]; RCVD_IN_DNSWL_NONE(0.00)[9.2.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; NEURAL_HAM_SHORT(-0.98)[-0.981,0]; FORGED_SENDER(0.30)[markj@freebsd.org,markjdb@gmail.com]; MID_RHS_NOT_FQDN(0.50)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; FROM_NEQ_ENVFROM(0.00)[markj@freebsd.org,markjdb@gmail.com] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Nov 2018 00:35:22 -0000 On Tue, Nov 20, 2018 at 10:49:19PM +0000, Ben Widawsky wrote: > Author: bwidawsk > Date: Tue Nov 20 22:49:19 2018 > New Revision: 340709 > URL: https://svnweb.freebsd.org/changeset/base/340709 > > Log: > linuxkpi: Add some basic swap functions > > These are used by kms-drm to determine various heuristics relate > memory conditions. > > The number of free swap pages is just a variable, and it can be > much cheaper by either adding a new getter, or simply extern'ing > swap_total. However, this patch opts to use the more expensive, > existing interface - since this isn't an operation in a high per > path. > > This allows us to remove some more gpl linuxkpi and do the follo > kms-drm: > git rm linuxkpi/gplv2/include/linux/swap.h > > Reviewed by: mmacy, Johannes Lundberg > Approved by: emaste (mentor) > Differential Revision: https://reviews.freebsd.org/D18052 > > Added: > head/sys/compat/linuxkpi/common/include/linux/swap.h (contents, props changed) > Modified: > head/sys/vm/vm_pageout.h > head/sys/vm/vm_swapout.c > > [...] > Modified: head/sys/vm/vm_swapout.c > ============================================================================== > --- head/sys/vm/vm_swapout.c Tue Nov 20 22:24:18 2018 (r340708) > +++ head/sys/vm/vm_swapout.c Tue Nov 20 22:49:19 2018 (r340709) > @@ -961,3 +961,10 @@ swapout(struct proc *p) > p->p_swtick = ticks; > return (0); > } > + > +/* Used to determine if the current process is itself the reaper. */ > +bool > +vm_curproc_is_vmproc(void) > +{ > + return curproc == vmproc; > +} >From a look at how this is used, it should probably be pageproc rather than vmproc. There are various code paths that just check curproc == pageproc inline.