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memory allocations We add these hooks to avoid key threads blocked in memory allocation path. -android_vh_free_unref_page_bypass ----We create a memory pool for the key threads. This hook determines whether a page should be free to the pool or to buddy freelist. It works with a existing hook `android_vh_alloc_pages_reclaim_bypass`, which takes pages out of the pool. -android_vh_kvmalloc_node_use_vmalloc ----For key threads, we perfer not to run into direct reclaim. So we clear __GFP_DIRECT_RECLAIM flag. For threads which are not that important, we perfer use vmalloc. -android_vh_should_alloc_pages_retry ----Before key threads run into direct reclaim, we want to retry with a lower watermark. -android_vh_unreserve_highatomic_bypass ----We want to keep more highatomic pages when unreserve them to avoid highatomic allocation failures. -android_vh_rmqueue_bulk_bypass ----We found sometimes when key threads run into rmqueue_bulk, it took several milliseconds spinning at zone->lock or filling per-cpu pages. We use this hook to take pages from the mempool mentioned above, rather than grab zone->lock and fill a batch of pages to per-cpu. Bug: 288216516 Change-Id: I1656032d6819ca627723341987b6094775bc345f Signed-off-by: Oven <liyangouwen1@oppo.com> |
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| .. | ||
| android_debug_symbols.c | ||
| binder.c | ||
| binder_alloc.c | ||
| binder_alloc.h | ||
| binder_alloc_selftest.c | ||
| binder_internal.h | ||
| binder_trace.h | ||
| binderfs.c | ||
| debug_kinfo.c | ||
| debug_kinfo.h | ||
| Kconfig | ||
| Makefile | ||
| vendor_hooks.c | ||