ANDROID: Fix lost track action type in save_track_hash

Transmit the track action type to save_track_hash, otherwise we do not
know it is allocation stack or free stack.

Fixes: 8bc6337823c6 ("ANDROID: vendor_hooks: add hooks for slab memory leak debugging")
Bug: 184928480
Bug: 395197442
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Change-Id: I74c50c02cfb4ebbf3e9fecdf125e76946ff4e7d1
(cherry picked from commit 7d216e2512082853f4cf0c220a1b48119203144f)
Signed-off-by: huzhanyuan <huzhanyuan@oppo.com>
Signed-off-by: wengle <wengle@oppo.com>

drivers/android/vendor_hooks.c

@@ -365,6 +365,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_warn_alloc_tune_ratelimit);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_warn_alloc_show_mem_bypass);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_use_vm_swappiness);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tune_scan_control);
+EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_save_track_hash);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_exit_signal);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_process_madvise_bypass);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_madvise_pageout_return_error);

include/trace/hooks/mm.h

@@ -12,6 +12,7 @@
 struct shmem_inode_info;
 struct folio;
 struct folio_batch;
+struct track;
 
 DECLARE_RESTRICTED_HOOK(android_rvh_shmem_get_folio,
 			TP_PROTO(struct shmem_inode_info *info, struct folio **folio, int order),
@@ -325,6 +326,9 @@ DECLARE_HOOK(android_vh_alloc_pages_failure_bypass,
 	TP_PROTO(gfp_t gfp_mask, int order, int alloc_flags,
 	int migratetype, struct page **page),
 	TP_ARGS(gfp_mask, order, alloc_flags, migratetype, page));
+DECLARE_HOOK(android_vh_save_track_hash,
+	TP_PROTO(bool alloc, struct track *p),
+	TP_ARGS(alloc, p));
 #endif /* _TRACE_HOOK_MM_H */
 
 /* This part must be outside protection */

mm/slub.c

@@ -996,6 +996,7 @@ static void set_track_update(struct kmem_cache *s, void *object,
 	p->cpu = smp_processor_id();
 	p->pid = current->pid;
 	p->when = jiffies;
+	trace_android_vh_save_track_hash(alloc == TRACK_ALLOC, p);
 }
 
 static __always_inline void set_track(struct kmem_cache *s, void *object,