On Mon, 17 Jun 2019 15:51:32 +0200 Vlastimil Babka <vbabka@xxxxxxx> wrote: > On 6/7/19 7:53 AM, Sai Charan Sane wrote: > > Memory overhead of 4MB is reduced by storing gfp_mask in stackdepot along > > with stacktrace. Stackdepot memory usage increased by ~100kb for 4GB of RAM. > > > > Page owner logs from dmesg: > > Before patch: > > allocated 20971520 bytes of page_ext > > After patch: > > allocated 16777216 bytes of page_ext > > > > Signed-off-by: Sai Charan Sane <s.charan@xxxxxxxxxxx> > > I don't know, this looks like unneeded abuse to me. In the debug > scenario when someone boots a kernel with page_owner enabled, does 4MB > out of 4GB RAM really make a difference? Thanks. I'll drop this patch.
