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platform_kernel-5.15
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ANDROID: vendor_hooks: Add hook in mmap_region() 

Add hook in mmap_region() to record the vma and address information
of monitored processes.

Bug: 198385827
Change-Id: I0bde29113b47ca7f4a9f5d42a54188e791ca3b7e
Signed-off-by: Jiewen Wang <jiewen.wang@vivo.com>
(cherry picked from commit 878e0caa773151b8a9445f24d3e059d0ece5566d)
This commit is contained in:
Jiewen Wang 2021-09-06 16:50:35 +08:00 committed by Suren Baghdasaryan
parent caaafb7005
commit 73c9d4a9d5
3 changed files with 8 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -305,3 +305,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_dma_buf_release);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_check_status);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_blk_alloc_rqs);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_blk_rq_ctx_init);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmap_region);

3
include/trace/hooks/mm.h
View File

@ -36,6 +36,9 @@ DECLARE_HOOK(android_vh_cma_drain_all_pages_bypass,
DECLARE_HOOK(android_vh_pcplist_add_cma_pages_bypass,
TP_PROTO(int migratetype, bool *bypass),
TP_ARGS(migratetype, bypass));
DECLARE_HOOK(android_vh_mmap_region,
TP_PROTO(struct vm_area_struct *vma, unsigned long addr),
TP_ARGS(vma, addr));
#endif /* _TRACE_HOOK_MM_H */

4
mm/mmap.c
View File

@ -56,6 +56,8 @@
#define CREATE_TRACE_POINTS
#include <trace/events/mmap.h>
#undef CREATE_TRACE_POINTS
#include <trace/hooks/mm.h>
#include "internal.h"
@ -1877,6 +1879,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
vma_set_page_prot(vma);
trace_android_vh_mmap_region(vma, addr);
return addr;
unmap_and_free_vma: