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ANDROID: vendor_hooks: Add hook in try_to_unmap_one()

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Add hook in try_to_unmap_one() to trace this function for debug memory
swap bugs.

Bug: 198385827
Change-Id: I1fdbe60e09bb491b949e06a07133710453ecca03
Signed-off-by: Jiewen Wang <jiewen.wang@vivo.com>
(cherry picked from commit 5a70133febf92e1269f98b533ce9f188c2e3b135)
This commit is contained in:
Jiewen Wang
2021-09-06 16:55:03 +08:00
committed by Treehugger Robot
parent 1a6d07106c
commit 79376c9869
3 changed files with 8 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -553,3 +553,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_uprobes_replace_page);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_swap_writepage);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_shrink_node_memcgs);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmap_region);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_try_to_unmap_one);

4
include/trace/hooks/mm.h
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@@ -519,6 +519,10 @@ DECLARE_HOOK(android_vh_swap_writepage,
DECLARE_HOOK(android_vh_mmap_region,
TP_PROTO(struct vm_area_struct *vma, unsigned long addr),
TP_ARGS(vma, addr));
DECLARE_HOOK(android_vh_try_to_unmap_one,
TP_PROTO(struct folio *folio, struct vm_area_struct *vma,
unsigned long addr, void *arg, bool ret),
TP_ARGS(folio, vma, addr, arg, ret));
#endif /* _TRACE_HOOK_MM_H */
/* This part must be outside protection */

3
mm/rmap.c
View File

@@ -82,6 +82,8 @@
#define CREATE_TRACE_POINTS
#include <trace/events/tlb.h>
#include <trace/events/migrate.h>
#undef CREATE_TRACE_POINTS
#include <trace/hooks/mm.h>
#undef CREATE_TRACE_POINTS
#include <trace/hooks/mm.h>
@@ -1957,6 +1959,7 @@ walk_done:
}
mmu_notifier_invalidate_range_end(&range);
trace_android_vh_try_to_unmap_one(folio, vma, address, arg, ret);
return ret;
}