> Date: Sat, 2 Nov 2019 10:55:30 +0100
> From: Martin Pieuchot <[email protected]>
>
> This function is just a wrapper on top of uvm_unmap(), it has its own
> file and is called only 3 times in the kernel. Getting rid of it makes
> the overall UVM simpler, ok?
>
> Index: sys/conf/files
> ===================================================================
> RCS file: /cvs/src/sys/conf/files,v
> retrieving revision 1.675
> diff -u -p -r1.675 files
> --- sys/conf/files 5 Oct 2019 05:33:14 -0000 1.675
> +++ sys/conf/files 2 Nov 2019 09:40:31 -0000
> @@ -970,7 +970,6 @@ file uvm/uvm_stat.c
> file uvm/uvm_swap.c
> file uvm/uvm_swap_encrypt.c uvm_swap_encrypt
> file uvm/uvm_unix.c
> -file uvm/uvm_user.c
> file uvm/uvm_vnode.c
>
> # IPv6
> Index: sys/kern/kern_exec.c
> ===================================================================
> RCS file: /cvs/src/sys/kern/kern_exec.c,v
> retrieving revision 1.208
> diff -u -p -r1.208 kern_exec.c
> --- sys/kern/kern_exec.c 2 Aug 2019 02:17:35 -0000 1.208
> +++ sys/kern/kern_exec.c 2 Nov 2019 09:40:31 -0000
> @@ -749,8 +749,7 @@ exec_abort:
> * get rid of the (new) address space we have created, if any, get rid
> * of our namei data and vnode, and exit noting failure
> */
> - uvm_deallocate(&vm->vm_map, VM_MIN_ADDRESS,
> - VM_MAXUSER_ADDRESS - VM_MIN_ADDRESS);
> + uvm_unmap(&vm->vm_map, VM_MIN_ADDRESS, VM_MAXUSER_ADDRESS);
> if (pack.ep_interp != NULL)
> pool_put(&namei_pool, pack.ep_interp);
> if (pack.ep_emul_arg != NULL)
> Index: sys/kern/sysv_shm.c
> ===================================================================
> RCS file: /cvs/src/sys/kern/sysv_shm.c,v
> retrieving revision 1.72
> diff -u -p -r1.72 sysv_shm.c
> --- sys/kern/sysv_shm.c 28 Oct 2019 19:57:50 -0000 1.72
> +++ sys/kern/sysv_shm.c 2 Nov 2019 09:40:31 -0000
> @@ -160,14 +160,14 @@ shm_delete_mapping(struct vmspace *vm, s
> {
> struct shmid_ds *shmseg;
> int segnum;
> - size_t size;
> + vaddr_t end;
>
> segnum = IPCID_TO_IX(shmmap_s->shmid);
> if (segnum < 0 || segnum >= shminfo.shmmni ||
> (shmseg = shmsegs[segnum]) == NULL)
> return (EINVAL);
> - size = round_page(shmseg->shm_segsz);
> - uvm_deallocate(&vm->vm_map, shmmap_s->va, size);
> + end = round_page(shmmap_s->va+shmseg->shm_segsz);
Please add spaces around the '+'. Otherwise ok kettenis@
> + uvm_unmap(&vm->vm_map, trunc_page(shmmap_s->va), end);
> shmmap_s->shmid = -1;
> shmseg->shm_dtime = time_second;
> if ((--shmseg->shm_nattch <= 0) &&
> Index: sys/uvm/uvm_extern.h
> ===================================================================
> RCS file: /cvs/src/sys/uvm/uvm_extern.h,v
> retrieving revision 1.148
> diff -u -p -r1.148 uvm_extern.h
> --- sys/uvm/uvm_extern.h 1 Jul 2019 21:13:03 -0000 1.148
> +++ sys/uvm/uvm_extern.h 2 Nov 2019 09:40:31 -0000
> @@ -455,7 +455,6 @@ int uvm_coredump_walkmap(struct
> proc *
> uvm_coredump_setup_cb *_setup,
> uvm_coredump_walk_cb *_walk, void *_cookie);
> void uvm_grow(struct proc *, vaddr_t);
> -void uvm_deallocate(vm_map_t, vaddr_t, vsize_t);
> struct uvm_object *uvn_attach(struct vnode *, vm_prot_t);
> void uvm_pagezero_thread(void *);
> void kmeminit_nkmempages(void);
> Index: sys/uvm/uvm_unix.c
> ===================================================================
> RCS file: /cvs/src/sys/uvm/uvm_unix.c,v
> retrieving revision 1.66
> diff -u -p -r1.66 uvm_unix.c
> --- sys/uvm/uvm_unix.c 21 Jun 2019 09:39:49 -0000 1.66
> +++ sys/uvm/uvm_unix.c 2 Nov 2019 09:40:31 -0000
> @@ -94,7 +94,7 @@ sys_obreak(struct proc *p, void *v, regi
> }
> vm->vm_dsize += atop(new - old);
> } else {
> - uvm_deallocate(&vm->vm_map, new, old - new);
> + uvm_unmap(&vm->vm_map, new, old);
> vm->vm_dsize -= atop(old - new);
> }
>
> Index: sys/uvm/uvm_user.c
> ===================================================================
> RCS file: sys/uvm/uvm_user.c
> diff -N sys/uvm/uvm_user.c
> --- sys/uvm/uvm_user.c 14 Sep 2014 14:17:27 -0000 1.14
> +++ /dev/null 1 Jan 1970 00:00:00 -0000
> @@ -1,55 +0,0 @@
> -/* $OpenBSD: uvm_user.c,v 1.14 2014/09/14 14:17:27 jsg Exp $ */
> -/* $NetBSD: uvm_user.c,v 1.8 2000/06/27 17:29:37 mrg Exp $ */
> -
> -/*
> - * Copyright (c) 1997 Charles D. Cranor and Washington University.
> - * All rights reserved.
> - *
> - * Redistribution and use in source and binary forms, with or without
> - * modification, are permitted provided that the following conditions
> - * are met:
> - * 1. Redistributions of source code must retain the above copyright
> - * notice, this list of conditions and the following disclaimer.
> - * 2. Redistributions in binary form must reproduce the above copyright
> - * notice, this list of conditions and the following disclaimer in the
> - * documentation and/or other materials provided with the distribution.
> - *
> - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
> - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
> - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
> - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
> - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
> - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
> - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
> - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
> - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> - *
> - * from: Id: uvm_user.c,v 1.1.2.1 1997/08/14 19:10:41 chuck Exp
> - */
> -
> -/*
> - * uvm_user.c: high level uvm_allocate/uvm_deallocate interface into vm.
> - */
> -
> -
> -#include <sys/param.h>
> -#include <sys/systm.h>
> -
> -#include <uvm/uvm.h>
> -
> -/*
> - * uvm_deallocate: deallocate memory (unmap)
> - */
> -void
> -uvm_deallocate(struct vm_map *map, vaddr_t start, vsize_t size)
> -{
> -
> - if (map == NULL)
> - panic("uvm_deallocate with null map");
> -
> - if (size == 0)
> - return;
> -
> - uvm_unmap(map, trunc_page(start), round_page(start+size));
> -}
> Index: share/man/man9/uvm.9
> ===================================================================
> RCS file: /cvs/src/share/man/man9/uvm.9,v
> retrieving revision 1.70
> diff -u -p -r1.70 uvm.9
> --- share/man/man9/uvm.9 21 Jun 2019 09:39:48 -0000 1.70
> +++ share/man/man9/uvm.9 2 Nov 2019 09:44:05 -0000
> @@ -43,7 +43,6 @@
> .Nm uvm_map_pageable_all ,
> .Nm uvm_map_checkprot ,
> .Nm uvm_map_protect ,
> -.Nm uvm_deallocate ,
> .Nm uvmspace_alloc ,
> .Nm uvmspace_exec ,
> .Nm uvmspace_fork ,
> @@ -182,8 +181,6 @@ function initialises the swap subsystem.
> .Fn uvm_map_checkprot "vm_map_t map" "vaddr_t start" "vaddr_t end"
> "vm_prot_t protection"
> .Ft int
> .Fn uvm_map_protect "vm_map_t map" "vaddr_t start" "vaddr_t end" "vm_prot_t
> new_prot" "boolean_t set_max"
> -.Ft void
> -.Fn uvm_deallocate "vm_map_t map" "vaddr_t start" "vsize_t size"
> .Ft struct vmspace *
> .Fn uvmspace_alloc "vaddr_t min" "vaddr_t max" "boolean_t pageable"
> "boolean_t remove_holes"
> .Ft void
> @@ -391,15 +388,6 @@ if
> .Fa set_max
> is non-zero.
> This function returns a standard errno.
> -.Pp
> -The
> -.Fn uvm_deallocate
> -function deallocates kernel memory in map
> -.Fa map
> -from address
> -.Fa start
> -to
> -.Fa start + size .
> .Pp
> The
> .Fn uvmspace_alloc
>
>
