linux/include/trace/events/kmem.h
Namhyung Kim 9fdd8a875c tracing, mm: Record pfn instead of pointer to struct page
The struct page is opaque for userspace tools, so it'd be better to save
pfn in order to identify page frames.

The textual output of $debugfs/tracing/trace file remains unchanged and
only raw (binary) data format is changed - but thanks to libtraceevent,
userspace tools which deal with the raw data (like perf and trace-cmd)
can parse the format easily.  So impact on the userspace will also be
minimal.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Based-on-patch-by: Joonsoo Kim <js1304@gmail.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/1428298576-9785-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-04-13 11:44:52 -03:00

312 lines
7.2 KiB
C

#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/gfpflags.h>
DECLARE_EVENT_CLASS(kmem_alloc,
TP_PROTO(unsigned long call_site,
const void *ptr,
size_t bytes_req,
size_t bytes_alloc,
gfp_t gfp_flags),
TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags),
TP_STRUCT__entry(
__field( unsigned long, call_site )
__field( const void *, ptr )
__field( size_t, bytes_req )
__field( size_t, bytes_alloc )
__field( gfp_t, gfp_flags )
),
TP_fast_assign(
__entry->call_site = call_site;
__entry->ptr = ptr;
__entry->bytes_req = bytes_req;
__entry->bytes_alloc = bytes_alloc;
__entry->gfp_flags = gfp_flags;
),
TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s",
__entry->call_site,
__entry->ptr,
__entry->bytes_req,
__entry->bytes_alloc,
show_gfp_flags(__entry->gfp_flags))
);
DEFINE_EVENT(kmem_alloc, kmalloc,
TP_PROTO(unsigned long call_site, const void *ptr,
size_t bytes_req, size_t bytes_alloc, gfp_t gfp_flags),
TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags)
);
DEFINE_EVENT(kmem_alloc, kmem_cache_alloc,
TP_PROTO(unsigned long call_site, const void *ptr,
size_t bytes_req, size_t bytes_alloc, gfp_t gfp_flags),
TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags)
);
DECLARE_EVENT_CLASS(kmem_alloc_node,
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( gfp_t, 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 = gfp_flags;
__entry->node = node;
),
TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d",
__entry->call_site,
__entry->ptr,
__entry->bytes_req,
__entry->bytes_alloc,
show_gfp_flags(__entry->gfp_flags),
__entry->node)
);
DEFINE_EVENT(kmem_alloc_node, kmalloc_node,
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)
);
DEFINE_EVENT(kmem_alloc_node, kmem_cache_alloc_node,
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)
);
DECLARE_EVENT_CLASS(kmem_free,
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=%lx ptr=%p", __entry->call_site, __entry->ptr)
);
DEFINE_EVENT(kmem_free, kfree,
TP_PROTO(unsigned long call_site, const void *ptr),
TP_ARGS(call_site, ptr)
);
DEFINE_EVENT(kmem_free, kmem_cache_free,
TP_PROTO(unsigned long call_site, const void *ptr),
TP_ARGS(call_site, ptr)
);
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=%lu order=%d",
pfn_to_page(__entry->pfn),
__entry->pfn,
__entry->order)
);
TRACE_EVENT(mm_page_free_batched,
TP_PROTO(struct page *page, int cold),
TP_ARGS(page, cold),
TP_STRUCT__entry(
__field( unsigned long, pfn )
__field( int, cold )
),
TP_fast_assign(
__entry->pfn = page_to_pfn(page);
__entry->cold = cold;
),
TP_printk("page=%p pfn=%lu order=0 cold=%d",
pfn_to_page(__entry->pfn),
__entry->pfn,
__entry->cold)
);
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( gfp_t, gfp_flags )
__field( int, migratetype )
),
TP_fast_assign(
__entry->pfn = page ? page_to_pfn(page) : -1UL;
__entry->order = order;
__entry->gfp_flags = gfp_flags;
__entry->migratetype = migratetype;
),
TP_printk("page=%p pfn=%lu 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),
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=%lu 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->order == 0)
);
DEFINE_EVENT(mm_page, mm_page_alloc_zone_locked,
TP_PROTO(struct page *page, unsigned int order, int migratetype),
TP_ARGS(page, order, migratetype)
);
DEFINE_EVENT_PRINT(mm_page, mm_page_pcpu_drain,
TP_PROTO(struct page *page, unsigned int order, int migratetype),
TP_ARGS(page, order, migratetype),
TP_printk("page=%p pfn=%lu 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=%lu 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)
);
#endif /* _TRACE_KMEM_H */
/* This part must be outside protection */
#include <trace/define_trace.h>