Module Name: src
Committed By: skrll
Date: Tue Aug 4 06:10:27 UTC 2020
Modified Files:
src/share/man/man4: options.4
src/sys/uvm: files.uvm
Log Message:
G/C USE_TOPDOWN_VM. __USE_TOPDOWN_VM is used (and hidden)
To generate a diff of this commit:
cvs rdiff -u -r1.513 -r1.514 src/share/man/man4/options.4
cvs rdiff -u -r1.35 -r1.36 src/sys/uvm/files.uvm
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/options.4
diff -u src/share/man/man4/options.4:1.513 src/share/man/man4/options.4:1.514
--- src/share/man/man4/options.4:1.513 Sat Aug 1 08:20:47 2020
+++ src/share/man/man4/options.4 Tue Aug 4 06:10:27 2020
@@ -1,4 +1,4 @@
-.\" $NetBSD: options.4,v 1.513 2020/08/01 08:20:47 maxv Exp $
+.\" $NetBSD: options.4,v 1.514 2020/08/04 06:10:27 skrll Exp $
.\"
.\" Copyright (c) 1996
.\" Perry E. Metzger. All rights reserved.
@@ -30,7 +30,7 @@
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\"
-.Dd August 1, 2020
+.Dd August 4, 2020
.Dt OPTIONS 4
.Os
.Sh NAME
@@ -2190,27 +2190,6 @@ Note that this sets the value of the
variable which may be changed at run time \(em see
.Xr sysctl 8
for details.
-.It Cd options USE_TOPDOWN_VM
-User space memory allocations (as made by
-.Xr mmap 2 )
-will be arranged in a
-.Dq top down
-fashion instead of the traditional
-.Dq upwards from MAXDSIZ \&+ vm_daddr
-method.
-This includes the placement of
-.Xr ld.so 1 .
-Arranging memory in this manner allows either (or both of) the heap or
-.Xr mmap 2
-allocated space to grow larger than traditionally possible.
-This option is not available on all ports, but is instead expected to be
-offered on a port-by-port basis, after which some ports will commit to
-using it by default.
-See the files
-.Pa /usr/include/uvm/uvm_param.h
-for some implementation details, and
-.Pa /usr/include/machine/vmparam.h
-for port specific details including availability.
.It Cd options VMSWAP
Enable paging device/file support.
This option is on by default.
Index: src/sys/uvm/files.uvm
diff -u src/sys/uvm/files.uvm:1.35 src/sys/uvm/files.uvm:1.36
--- src/sys/uvm/files.uvm:1.35 Mon Jun 29 23:33:46 2020
+++ src/sys/uvm/files.uvm Tue Aug 4 06:10:27 2020
@@ -1,4 +1,4 @@
-# $NetBSD: files.uvm,v 1.35 2020/06/29 23:33:46 riastradh Exp $
+# $NetBSD: files.uvm,v 1.36 2020/08/04 06:10:27 skrll Exp $
#
# UVM options
@@ -6,7 +6,7 @@
defflag opt_uvmhist.h UVMHIST: KERNHIST
defflag opt_uvmhist.h UVMHIST_PRINT: KERNHIST_PRINT
defparam opt_uvmhist.h UVMHIST_MAPHIST_SIZE UVMHIST_PDHIST_SIZE
-defflag opt_uvm.h USE_TOPDOWN_VM UVMMAP_COUNTERS
+defflag opt_uvm.h UVMMAP_COUNTERS
defparam opt_uvm.h UVM_RESERVED_PAGES_PER_CPU
defflag opt_vmswap.h VMSWAP : aes
defflag opt_readahead.h READAHEAD_STATS
