forked from luck/tmp_suning_uos_patched
0d3d062a6e
The page allocation trace event reports that a page was successfully allocated but it does not specify where it came from. When analysing performance, it can be important to distinguish between pages coming from the per-cpu allocator and pages coming from the buddy lists as the latter requires the zone lock to the taken and more data structures to be examined. This patch adds a trace event for __rmqueue reporting when a page is being allocated from the buddy lists. It distinguishes between being called to refill the per-cpu lists or whether it is a high-order allocation. Similarly, this patch adds an event to catch when the PCP lists are being drained a little and pages are going back to the buddy lists. This is trickier to draw conclusions from but high activity on those events could explain why there were a large number of cache misses on a page-allocator-intensive workload. The coalescing and splitting of buddies involves a lot of writing of page metadata and cache line bounces not to mention the acquisition of an interrupt-safe lock necessary to enter this path. [akpm@linux-foundation.org: fix build] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Reviewed-by: Ingo Molnar <mingo@elte.hu> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Ming Chun <macli@brc.ubc.ca> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
395 lines
9.3 KiB
C
395 lines
9.3 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>
|
|
|
|
/*
|
|
* The order of these masks is important. Matching masks will be seen
|
|
* first and the left over flags will end up showing by themselves.
|
|
*
|
|
* For example, if we have GFP_KERNEL before GFP_USER we wil get:
|
|
*
|
|
* GFP_KERNEL|GFP_HARDWALL
|
|
*
|
|
* Thus most bits set go first.
|
|
*/
|
|
#define show_gfp_flags(flags) \
|
|
(flags) ? __print_flags(flags, "|", \
|
|
{(unsigned long)GFP_HIGHUSER_MOVABLE, "GFP_HIGHUSER_MOVABLE"}, \
|
|
{(unsigned long)GFP_HIGHUSER, "GFP_HIGHUSER"}, \
|
|
{(unsigned long)GFP_USER, "GFP_USER"}, \
|
|
{(unsigned long)GFP_TEMPORARY, "GFP_TEMPORARY"}, \
|
|
{(unsigned long)GFP_KERNEL, "GFP_KERNEL"}, \
|
|
{(unsigned long)GFP_NOFS, "GFP_NOFS"}, \
|
|
{(unsigned long)GFP_ATOMIC, "GFP_ATOMIC"}, \
|
|
{(unsigned long)GFP_NOIO, "GFP_NOIO"}, \
|
|
{(unsigned long)__GFP_HIGH, "GFP_HIGH"}, \
|
|
{(unsigned long)__GFP_WAIT, "GFP_WAIT"}, \
|
|
{(unsigned long)__GFP_IO, "GFP_IO"}, \
|
|
{(unsigned long)__GFP_COLD, "GFP_COLD"}, \
|
|
{(unsigned long)__GFP_NOWARN, "GFP_NOWARN"}, \
|
|
{(unsigned long)__GFP_REPEAT, "GFP_REPEAT"}, \
|
|
{(unsigned long)__GFP_NOFAIL, "GFP_NOFAIL"}, \
|
|
{(unsigned long)__GFP_NORETRY, "GFP_NORETRY"}, \
|
|
{(unsigned long)__GFP_COMP, "GFP_COMP"}, \
|
|
{(unsigned long)__GFP_ZERO, "GFP_ZERO"}, \
|
|
{(unsigned long)__GFP_NOMEMALLOC, "GFP_NOMEMALLOC"}, \
|
|
{(unsigned long)__GFP_HARDWALL, "GFP_HARDWALL"}, \
|
|
{(unsigned long)__GFP_THISNODE, "GFP_THISNODE"}, \
|
|
{(unsigned long)__GFP_RECLAIMABLE, "GFP_RECLAIMABLE"}, \
|
|
{(unsigned long)__GFP_MOVABLE, "GFP_MOVABLE"} \
|
|
) : "GFP_NOWAIT"
|
|
|
|
TRACE_EVENT(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),
|
|
|
|
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))
|
|
);
|
|
|
|
TRACE_EVENT(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),
|
|
|
|
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))
|
|
);
|
|
|
|
TRACE_EVENT(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),
|
|
|
|
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)
|
|
);
|
|
|
|
TRACE_EVENT(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),
|
|
|
|
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)
|
|
);
|
|
|
|
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=%lx ptr=%p", __entry->call_site, __entry->ptr)
|
|
);
|
|
|
|
TRACE_EVENT(kmem_cache_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)
|
|
);
|
|
|
|
TRACE_EVENT(mm_page_free_direct,
|
|
|
|
TP_PROTO(struct page *page, unsigned int order),
|
|
|
|
TP_ARGS(page, order),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( struct page *, page )
|
|
__field( unsigned int, order )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->page = page;
|
|
__entry->order = order;
|
|
),
|
|
|
|
TP_printk("page=%p pfn=%lu order=%d",
|
|
__entry->page,
|
|
page_to_pfn(__entry->page),
|
|
__entry->order)
|
|
);
|
|
|
|
TRACE_EVENT(mm_pagevec_free,
|
|
|
|
TP_PROTO(struct page *page, int cold),
|
|
|
|
TP_ARGS(page, cold),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( struct page *, page )
|
|
__field( int, cold )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->page = page;
|
|
__entry->cold = cold;
|
|
),
|
|
|
|
TP_printk("page=%p pfn=%lu order=0 cold=%d",
|
|
__entry->page,
|
|
page_to_pfn(__entry->page),
|
|
__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( struct page *, page )
|
|
__field( unsigned int, order )
|
|
__field( gfp_t, gfp_flags )
|
|
__field( int, migratetype )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->page = page;
|
|
__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->page,
|
|
page_to_pfn(__entry->page),
|
|
__entry->order,
|
|
__entry->migratetype,
|
|
show_gfp_flags(__entry->gfp_flags))
|
|
);
|
|
|
|
TRACE_EVENT(mm_page_alloc_zone_locked,
|
|
|
|
TP_PROTO(struct page *page, unsigned int order, int migratetype),
|
|
|
|
TP_ARGS(page, order, migratetype),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( struct page *, page )
|
|
__field( unsigned int, order )
|
|
__field( int, migratetype )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->page = page;
|
|
__entry->order = order;
|
|
__entry->migratetype = migratetype;
|
|
),
|
|
|
|
TP_printk("page=%p pfn=%lu order=%u migratetype=%d percpu_refill=%d",
|
|
__entry->page,
|
|
page_to_pfn(__entry->page),
|
|
__entry->order,
|
|
__entry->migratetype,
|
|
__entry->order == 0)
|
|
);
|
|
|
|
TRACE_EVENT(mm_page_pcpu_drain,
|
|
|
|
TP_PROTO(struct page *page, int order, int migratetype),
|
|
|
|
TP_ARGS(page, order, migratetype),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( struct page *, page )
|
|
__field( int, order )
|
|
__field( int, migratetype )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->page = page;
|
|
__entry->order = order;
|
|
__entry->migratetype = migratetype;
|
|
),
|
|
|
|
TP_printk("page=%p pfn=%lu order=%d migratetype=%d",
|
|
__entry->page,
|
|
page_to_pfn(__entry->page),
|
|
__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( struct page *, page )
|
|
__field( int, alloc_order )
|
|
__field( int, fallback_order )
|
|
__field( int, alloc_migratetype )
|
|
__field( int, fallback_migratetype )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->page = page;
|
|
__entry->alloc_order = alloc_order;
|
|
__entry->fallback_order = fallback_order;
|
|
__entry->alloc_migratetype = alloc_migratetype;
|
|
__entry->fallback_migratetype = fallback_migratetype;
|
|
),
|
|
|
|
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",
|
|
__entry->page,
|
|
page_to_pfn(__entry->page),
|
|
__entry->alloc_order,
|
|
__entry->fallback_order,
|
|
pageblock_order,
|
|
__entry->alloc_migratetype,
|
|
__entry->fallback_migratetype,
|
|
__entry->fallback_order < pageblock_order,
|
|
__entry->alloc_migratetype == __entry->fallback_migratetype)
|
|
);
|
|
|
|
#endif /* _TRACE_KMEM_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|