d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Limit top display of total swap size by the max swap size system can

Browse Source 
handle.

Keep both pagesize and the new swap_maxpages in the static variables
to save sysctl calls.

Submitted by:	ota@j.email.ne.jp
PR:	223149
MFC after:	2 weeks
This commit is contained in:
kib 2017-10-25 11:44:46 +00:00
parent 9799ec2be8
commit c2b6ea8fa5
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
usr.bin/top/machine.c
View File

@ -1671,8 +1671,9 @@ static int
swapmode(int *retavail, int *retfree)
{
int n;
int pagesize = getpagesize();
struct kvm_swap swapary[1];
static int pagesize = 0;
static u_long swap_maxpages = 0;
*retavail = 0;
*retfree = 0;
@ -1683,6 +1684,16 @@ swapmode(int *retavail, int *retfree)
if (n < 0 || swapary[0].ksw_total == 0)
return (0);
if (pagesize == 0)
pagesize = getpagesize();
if (swap_maxpages == 0)
GETSYSCTL("vm.swap_maxpages", swap_maxpages);
/* ksw_total contains the total size of swap all devices which may
exceed the maximum swap size allocatable in the system */
if ( swapary[0].ksw_total > swap_maxpages )
swapary[0].ksw_total = swap_maxpages;
*retavail = CONVERT(swapary[0].ksw_total);
*retfree = CONVERT(swapary[0].ksw_total - swapary[0].ksw_used);