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Code Issues Releases Activity

conf: Remove kernel stack swapping support, part 12

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Remove the NO_SWAPPING option.  There is still some code in
vm_swapout.c, but it relates to RACCT handling.  Remove the option and
make compilation of vm_swapout.c conditional on RACCT.

Tested by:	pho
Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D46130
This commit is contained in:
Mark Johnston 2024-07-29 01:42:54 +00:00
parent ec84a986ba
commit 6aa98f78cc
6 changed files with 1 additions and 19 deletions
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1
sys/arm/conf/ARMADAXP
View File

@ -40,7 +40,6 @@ options ROOTDEVNAME=\"ufs:/dev/da0p1\"
options MUTEX_NOINLINE
options RWLOCK_NOINLINE
options NO_FFS_SNAPSHOT
options NO_SWAPPING
# Pseudo devices
device pty

10
sys/conf/NOTES
View File

@ -2390,16 +2390,6 @@ options SW_WATCHDOG
#
options DEADLKRES
#
# Disable swapping of stack pages. This option removes all
# code which actually performs swapping, so it's not possible to turn
# it back on at run-time.
#
# This is sometimes usable for systems which don't have any swap space
# (see also sysctl "vm.disable_swapspace_pageouts")
#
#options NO_SWAPPING
# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
# for sendfile(2) that are used to map file VM pages, and normally
# default to a quantity that is roughly 16*MAXUSERS+512. You would

2
sys/conf/files
View File

@ -5266,7 +5266,7 @@ vm/vm_pager.c standard
vm/vm_phys.c standard
vm/vm_radix.c standard
vm/vm_reserv.c standard
vm/vm_swapout.c optional !NO_SWAPPING
vm/vm_swapout.c optional racct
vm/vm_unix.c standard
vm/vnode_pager.c standard
xen/features.c optional xenhvm

1
sys/conf/options
View File

@ -630,7 +630,6 @@ VM_KMEM_SIZE_SCALE opt_vm.h
VM_KMEM_SIZE_MAX opt_vm.h
VM_NRESERVLEVEL opt_vm.h
VM_LEVEL_0_ORDER opt_vm.h
NO_SWAPPING opt_vm.h
MALLOC_MAKE_FAILURES opt_vm.h
MALLOC_PROFILE opt_vm.h
MALLOC_DEBUG_MAXZONES opt_vm.h

1
sys/powerpc/conf/dpaa/DPAA
View File

@ -34,7 +34,6 @@ options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
options NO_SWAPPING
options KDB #Enable the kernel debugger
options DDB #Support DDB

5
sys/vm/vm_swapout.c
View File

@ -68,7 +68,6 @@
* rights to redistribute these changes.
*/
#include <sys/cdefs.h>
#include "opt_kstack_pages.h"
#include "opt_kstack_max_pages.h"
#include "opt_vm.h"
@ -293,12 +292,10 @@ vm_daemon(void)
struct thread *td;
struct vmspace *vm;
int breakout, tryagain, attempts;
#ifdef RACCT
uint64_t rsize, ravailable;
if (racct_enable && vm_daemon_timeout == 0)
vm_daemon_timeout = hz;
#endif
while (TRUE) {
mtx_lock(&vm_daemon_mtx);
@ -371,7 +368,6 @@ vm_daemon(void)
&vm->vm_map, limit);
size = vmspace_resident_count(vm);
}
#ifdef RACCT
if (racct_enable) {
rsize = IDX_TO_OFF(size);
PROC_LOCK(p);
@ -409,7 +405,6 @@ vm_daemon(void)
tryagain = 1;
}
}
#endif
vmspace_free(vm);
sx_slock(&allproc_lock);
PRELE(p);