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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 190af40844
commit 1a40d683e8
3 changed files with 8 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -237,3 +237,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_alloc_new_buf_locked);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_reply);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_trans);
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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@@ -26,6 +26,10 @@ DECLARE_RESTRICTED_HOOK(android_rvh_set_readahead_gfp_mask,
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 */

3
mm/rmap.c
View File

@@ -80,6 +80,8 @@
#define CREATE_TRACE_POINTS
#include <trace/events/tlb.h>
#include <trace/events/migrate.h>
#undef CREATE_TRACE_POINTS
#include <trace/hooks/mm.h>
#include "internal.h"
@@ -1786,6 +1788,7 @@ discard:
}
mmu_notifier_invalidate_range_end(&range);
trace_android_vh_try_to_unmap_one(folio, vma, address, arg, ret);
return ret;
}