1 files changed, 377 insertions, 0 deletions
diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h
new file mode 100644
index 0000000000..58688768ef
--- /dev/null
+++ b/include/trace/events/kmem.h
@@ -0,0 +1,377 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kmem
+
+#if !defined(_TRACE_KMEM_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KMEM_H
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+#include <trace/events/mmflags.h>
+
+TRACE_EVENT(kmem_cache_alloc,
+
+	TP_PROTO(unsigned long call_site,
+		 const void *ptr,
+		 struct kmem_cache *s,
+		 gfp_t gfp_flags,
+		 int node),
+
+	TP_ARGS(call_site, ptr, s, gfp_flags, node),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	call_site	)
+		__field(	const void *,	ptr		)
+		__field(	size_t,		bytes_req	)
+		__field(	size_t,		bytes_alloc	)
+		__field(	unsigned long,	gfp_flags	)
+		__field(	int,		node		)
+		__field(	bool,		accounted	)
+	),
+
+	TP_fast_assign(
+		__entry->call_site	= call_site;
+		__entry->ptr		= ptr;
+		__entry->bytes_req	= s->object_size;
+		__entry->bytes_alloc	= s->size;
+		__entry->gfp_flags	= (__force unsigned long)gfp_flags;
+		__entry->node		= node;
+		__entry->accounted	= IS_ENABLED(CONFIG_MEMCG_KMEM) ?
+					  ((gfp_flags & __GFP_ACCOUNT) ||
+					  (s->flags & SLAB_ACCOUNT)) : false;
+	),
+
+	TP_printk("call_site=%pS ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d accounted=%s",
+		(void *)__entry->call_site,
+		__entry->ptr,
+		__entry->bytes_req,
+		__entry->bytes_alloc,
+		show_gfp_flags(__entry->gfp_flags),
+		__entry->node,
+		__entry->accounted ? "true" : "false")
+);
+
+TRACE_EVENT(kmalloc,
+
+	TP_PROTO(unsigned long call_site,
+		 const void *ptr,
+		 size_t bytes_req,
+		 size_t bytes_alloc,
+		 gfp_t gfp_flags,
+		 int node),
+
+	TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	call_site	)
+		__field(	const void *,	ptr		)
+		__field(	size_t,		bytes_req	)
+		__field(	size_t,		bytes_alloc	)
+		__field(	unsigned long,	gfp_flags	)
+		__field(	int,		node		)
+	),
+
+	TP_fast_assign(
+		__entry->call_site	= call_site;
+		__entry->ptr		= ptr;
+		__entry->bytes_req	= bytes_req;
+		__entry->bytes_alloc	= bytes_alloc;
+		__entry->gfp_flags	= (__force unsigned long)gfp_flags;
+		__entry->node		= node;
+	),
+
+	TP_printk("call_site=%pS ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d accounted=%s",
+		(void *)__entry->call_site,
+		__entry->ptr,
+		__entry->bytes_req,
+		__entry->bytes_alloc,
+		show_gfp_flags(__entry->gfp_flags),
+		__entry->node,
+		(IS_ENABLED(CONFIG_MEMCG_KMEM) &&
+		 (__entry->gfp_flags & (__force unsigned long)__GFP_ACCOUNT)) ? "true" : "false")
+);
+
+TRACE_EVENT(kfree,
+
+	TP_PROTO(unsigned long call_site, const void *ptr),
+
+	TP_ARGS(call_site, ptr),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	call_site	)
+		__field(	const void *,	ptr		)
+	),
+
+	TP_fast_assign(
+		__entry->call_site	= call_site;
+		__entry->ptr		= ptr;
+	),
+
+	TP_printk("call_site=%pS ptr=%p",
+		  (void *)__entry->call_site, __entry->ptr)
+);
+
+TRACE_EVENT(kmem_cache_free,
+
+	TP_PROTO(unsigned long call_site, const void *ptr, const struct kmem_cache *s),
+
+	TP_ARGS(call_site, ptr, s),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	call_site	)
+		__field(	const void *,	ptr		)
+		__string(	name,		s->name		)
+	),
+
+	TP_fast_assign(
+		__entry->call_site	= call_site;
+		__entry->ptr		= ptr;
+		__assign_str(name, s->name);
+	),
+
+	TP_printk("call_site=%pS ptr=%p name=%s",
+		  (void *)__entry->call_site, __entry->ptr, __get_str(name))
+);
+
+TRACE_EVENT(mm_page_free,
+
+	TP_PROTO(struct page *page, unsigned int order),
+
+	TP_ARGS(page, order),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	pfn		)
+		__field(	unsigned int,	order		)
+	),
+
+	TP_fast_assign(
+		__entry->pfn		= page_to_pfn(page);
+		__entry->order		= order;
+	),
+
+	TP_printk("page=%p pfn=0x%lx order=%d",
+			pfn_to_page(__entry->pfn),
+			__entry->pfn,
+			__entry->order)
+);
+
+TRACE_EVENT(mm_page_free_batched,
+
+	TP_PROTO(struct page *page),
+
+	TP_ARGS(page),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	pfn		)
+	),
+
+	TP_fast_assign(
+		__entry->pfn		= page_to_pfn(page);
+	),
+
+	TP_printk("page=%p pfn=0x%lx order=0",
+			pfn_to_page(__entry->pfn),
+			__entry->pfn)
+);
+
+TRACE_EVENT(mm_page_alloc,
+
+	TP_PROTO(struct page *page, unsigned int order,
+			gfp_t gfp_flags, int migratetype),
+
+	TP_ARGS(page, order, gfp_flags, migratetype),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	pfn		)
+		__field(	unsigned int,	order		)
+		__field(	unsigned long,	gfp_flags	)
+		__field(	int,		migratetype	)
+	),
+
+	TP_fast_assign(
+		__entry->pfn		= page ? page_to_pfn(page) : -1UL;
+		__entry->order		= order;
+		__entry->gfp_flags	= (__force unsigned long)gfp_flags;
+		__entry->migratetype	= migratetype;
+	),
+
+	TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d gfp_flags=%s",
+		__entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
+		__entry->pfn != -1UL ? __entry->pfn : 0,
+		__entry->order,
+		__entry->migratetype,
+		show_gfp_flags(__entry->gfp_flags))
+);
+
+DECLARE_EVENT_CLASS(mm_page,
+
+	TP_PROTO(struct page *page, unsigned int order, int migratetype,
+		 int percpu_refill),
+
+	TP_ARGS(page, order, migratetype, percpu_refill),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	pfn		)
+		__field(	unsigned int,	order		)
+		__field(	int,		migratetype	)
+		__field(	int,		percpu_refill	)
+	),
+
+	TP_fast_assign(
+		__entry->pfn		= page ? page_to_pfn(page) : -1UL;
+		__entry->order		= order;
+		__entry->migratetype	= migratetype;
+		__entry->percpu_refill	= percpu_refill;
+	),
+
+	TP_printk("page=%p pfn=0x%lx order=%u migratetype=%d percpu_refill=%d",
+		__entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
+		__entry->pfn != -1UL ? __entry->pfn : 0,
+		__entry->order,
+		__entry->migratetype,
+		__entry->percpu_refill)
+);
+
+DEFINE_EVENT(mm_page, mm_page_alloc_zone_locked,
+
+	TP_PROTO(struct page *page, unsigned int order, int migratetype,
+		 int percpu_refill),
+
+	TP_ARGS(page, order, migratetype, percpu_refill)
+);
+
+TRACE_EVENT(mm_page_pcpu_drain,
+
+	TP_PROTO(struct page *page, unsigned int order, int migratetype),
+
+	TP_ARGS(page, order, migratetype),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	pfn		)
+		__field(	unsigned int,	order		)
+		__field(	int,		migratetype	)
+	),
+
+	TP_fast_assign(
+		__entry->pfn		= page ? page_to_pfn(page) : -1UL;
+		__entry->order		= order;
+		__entry->migratetype	= migratetype;
+	),
+
+	TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d",
+		pfn_to_page(__entry->pfn), __entry->pfn,
+		__entry->order, __entry->migratetype)
+);
+
+TRACE_EVENT(mm_page_alloc_extfrag,
+
+	TP_PROTO(struct page *page,
+		int alloc_order, int fallback_order,
+		int alloc_migratetype, int fallback_migratetype),
+
+	TP_ARGS(page,
+		alloc_order, fallback_order,
+		alloc_migratetype, fallback_migratetype),
+
+	TP_STRUCT__entry(
+		__field(	unsigned long,	pfn			)
+		__field(	int,		alloc_order		)
+		__field(	int,		fallback_order		)
+		__field(	int,		alloc_migratetype	)
+		__field(	int,		fallback_migratetype	)
+		__field(	int,		change_ownership	)
+	),
+
+	TP_fast_assign(
+		__entry->pfn			= page_to_pfn(page);
+		__entry->alloc_order		= alloc_order;
+		__entry->fallback_order		= fallback_order;
+		__entry->alloc_migratetype	= alloc_migratetype;
+		__entry->fallback_migratetype	= fallback_migratetype;
+		__entry->change_ownership	= (alloc_migratetype ==
+					get_pageblock_migratetype(page));
+	),
+
+	TP_printk("page=%p pfn=0x%lx alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d",
+		pfn_to_page(__entry->pfn),
+		__entry->pfn,
+		__entry->alloc_order,
+		__entry->fallback_order,
+		pageblock_order,
+		__entry->alloc_migratetype,
+		__entry->fallback_migratetype,
+		__entry->fallback_order < pageblock_order,
+		__entry->change_ownership)
+);
+
+/*
+ * Required for uniquely and securely identifying mm in rss_stat tracepoint.
+ */
+#ifndef __PTR_TO_HASHVAL
+static unsigned int __maybe_unused mm_ptr_to_hash(const void *ptr)
+{
+	int ret;
+	unsigned long hashval;
+
+	ret = ptr_to_hashval(ptr, &hashval);
+	if (ret)
+		return 0;
+
+	/* The hashed value is only 32-bit */
+	return (unsigned int)hashval;
+}
+#define __PTR_TO_HASHVAL
+#endif
+
+#define TRACE_MM_PAGES		\
+	EM(MM_FILEPAGES)	\
+	EM(MM_ANONPAGES)	\
+	EM(MM_SWAPENTS)		\
+	EMe(MM_SHMEMPAGES)
+
+#undef EM
+#undef EMe
+
+#define EM(a)	TRACE_DEFINE_ENUM(a);
+#define EMe(a)	TRACE_DEFINE_ENUM(a);
+
+TRACE_MM_PAGES
+
+#undef EM
+#undef EMe
+
+#define EM(a)	{ a, #a },
+#define EMe(a)	{ a, #a }
+
+TRACE_EVENT(rss_stat,
+
+	TP_PROTO(struct mm_struct *mm,
+		int member),
+
+	TP_ARGS(mm, member),
+
+	TP_STRUCT__entry(
+		__field(unsigned int, mm_id)
+		__field(unsigned int, curr)
+		__field(int, member)
+		__field(long, size)
+	),
+
+	TP_fast_assign(
+		__entry->mm_id = mm_ptr_to_hash(mm);
+		__entry->curr = !!(current->mm == mm);
+		__entry->member = member;
+		__entry->size = (percpu_counter_sum_positive(&mm->rss_stat[member])
+							    << PAGE_SHIFT);
+	),
+
+	TP_printk("mm_id=%u curr=%d type=%s size=%ldB",
+		__entry->mm_id,
+		__entry->curr,
+		__print_symbolic(__entry->member, TRACE_MM_PAGES),
+		__entry->size)
+	);
+#endif /* _TRACE_KMEM_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>