ANDROID: mm: Create vendor hooks to control ZONE_MOVABLE allocations
Create a vendor hook inside of gfp_zone() to modify which allocations
get to enter ZONE_MOVABLE, by zeroing out __GFP_HIGHMEM inside of the
trace hook based on certain conditions.
Separately, create separate trace hooks in the swap-in and readahead
paths to affect the behavior of the tracehook in gfp_zone().
Bug: 158645321
Change-Id: I4a4f0b724267ee120a1e5661f6da5d43d7ef6fc6
Signed-off-by: Chris Goldsworthy <cgoldswo@codeaurora.org>
diff --git a/mm/memory.c b/mm/memory.c
index 693729d..49fbc88 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -73,6 +73,7 @@
#include <linux/perf_event.h>
#include <linux/ptrace.h>
#include <linux/vmalloc.h>
+#include <trace/hooks/mm.h>
#include <trace/events/kmem.h>
@@ -3293,8 +3294,10 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
if (data_race(si->flags & SWP_SYNCHRONOUS_IO) &&
__swap_count(entry) == 1) {
/* skip swapcache */
- page = alloc_page_vma(GFP_HIGHUSER_MOVABLE, vma,
- vmf->address);
+ gfp_t flags = GFP_HIGHUSER_MOVABLE;
+
+ trace_android_rvh_set_skip_swapcache_flags(&flags);
+ page = alloc_page_vma(flags, vma, vmf->address);
if (page) {
int err;