per size, and make vmstat report this information under the "Memory
statistics by type" display, which is only printed when the kernel
has been compiled with KMEMSTATS defined, like this:
Memory statistics by type Type Kern
Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)
wapbl 15 4192K 4192K 78644K 376426 0 0 32:0,256:3,512:6,131072:1,262144:2,524288:3
Since struct malloc_type is user-visible and is changed, bump kernel
revision to 5.99.26.
While it is true that malloc(9) is in general on the path of slowly
being replaced by kmem(9) (kmem_alloc/kmem_free), there remains a
lot of points of usage of malloc/free, and this could aid in finding
any leaks. (It helped finding the leak fixed in PR#42661.)
This was discussed with and somewhat hestitantly OKed by rmind@
bb89b7208d