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1d4746d395
linux_dsm_epyc7002/include/trace/events/compaction.h
Michal Hocko 1d4746d395 mm, compaction: distinguish COMPACT_DEFERRED from COMPACT_SKIPPED 
try_to_compact_pages() can currently return COMPACT_SKIPPED even when
the compaction is defered for some zone just because zone DMA is skipped
in 99% of cases due to watermark checks.  This makes COMPACT_DEFERRED
basically unusable for the page allocator as a feedback mechanism.

Make sure we distinguish those two states properly and switch their
ordering in the enum.  This would mean that the COMPACT_SKIPPED will be
returned only when all eligible zones are skipped.

As a result COMPACT_DEFERRED handling for THP in __alloc_pages_slowpath
will be more precise and we would bail out rather than reclaim.

Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-20 17:58:30 -07:00

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#undef TRACE_SYSTEM
#define TRACE_SYSTEM compaction
#if !defined(_TRACE_COMPACTION_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_COMPACTION_H
#include <linux/types.h>
#include <linux/list.h>
#include <linux/tracepoint.h>
#include <trace/events/mmflags.h>
#define COMPACTION_STATUS \
EM( COMPACT_SKIPPED, "skipped") \
EM( COMPACT_DEFERRED, "deferred") \
EM( COMPACT_CONTINUE, "continue") \
EM( COMPACT_PARTIAL, "partial") \
EM( COMPACT_COMPLETE, "complete") \
EM( COMPACT_NO_SUITABLE_PAGE, "no_suitable_page") \
EM( COMPACT_NOT_SUITABLE_ZONE, "not_suitable_zone") \
EMe(COMPACT_CONTENDED, "contended")
#ifdef CONFIG_ZONE_DMA
#define IFDEF_ZONE_DMA(X) X
#else
#define IFDEF_ZONE_DMA(X)
#endif
#ifdef CONFIG_ZONE_DMA32
#define IFDEF_ZONE_DMA32(X) X
#else
#define IFDEF_ZONE_DMA32(X)
#endif
#ifdef CONFIG_HIGHMEM
#define IFDEF_ZONE_HIGHMEM(X) X
#else
#define IFDEF_ZONE_HIGHMEM(X)
#endif
#define ZONE_TYPE \
IFDEF_ZONE_DMA( EM (ZONE_DMA, "DMA")) \
IFDEF_ZONE_DMA32( EM (ZONE_DMA32, "DMA32")) \
EM (ZONE_NORMAL, "Normal") \
IFDEF_ZONE_HIGHMEM( EM (ZONE_HIGHMEM,"HighMem")) \
EMe(ZONE_MOVABLE,"Movable")
/*
* First define the enums in the above macros to be exported to userspace
* via TRACE_DEFINE_ENUM().
*/
#undef EM
#undef EMe
#define EM(a, b) TRACE_DEFINE_ENUM(a);
#define EMe(a, b) TRACE_DEFINE_ENUM(a);
COMPACTION_STATUS
ZONE_TYPE
/*
* Now redefine the EM() and EMe() macros to map the enums to the strings
* that will be printed in the output.
*/
#undef EM
#undef EMe
#define EM(a, b) {a, b},
#define EMe(a, b) {a, b}
DECLARE_EVENT_CLASS(mm_compaction_isolate_template,
TP_PROTO(
unsigned long start_pfn,
unsigned long end_pfn,
unsigned long nr_scanned,
unsigned long nr_taken),
TP_ARGS(start_pfn, end_pfn, nr_scanned, nr_taken),
TP_STRUCT__entry(
__field(unsigned long, start_pfn)
__field(unsigned long, end_pfn)
__field(unsigned long, nr_scanned)
__field(unsigned long, nr_taken)
),
TP_fast_assign(
__entry->start_pfn = start_pfn;
__entry->end_pfn = end_pfn;
__entry->nr_scanned = nr_scanned;
__entry->nr_taken = nr_taken;
),
TP_printk("range=(0x%lx ~ 0x%lx) nr_scanned=%lu nr_taken=%lu",
__entry->start_pfn,
__entry->end_pfn,
__entry->nr_scanned,
__entry->nr_taken)
);
DEFINE_EVENT(mm_compaction_isolate_template, mm_compaction_isolate_migratepages,
TP_PROTO(
unsigned long start_pfn,
unsigned long end_pfn,
unsigned long nr_scanned,
unsigned long nr_taken),
TP_ARGS(start_pfn, end_pfn, nr_scanned, nr_taken)
);
DEFINE_EVENT(mm_compaction_isolate_template, mm_compaction_isolate_freepages,
TP_PROTO(
unsigned long start_pfn,
unsigned long end_pfn,
unsigned long nr_scanned,
unsigned long nr_taken),
TP_ARGS(start_pfn, end_pfn, nr_scanned, nr_taken)
);
TRACE_EVENT(mm_compaction_migratepages,
TP_PROTO(unsigned long nr_all,
int migrate_rc,
struct list_head *migratepages),
TP_ARGS(nr_all, migrate_rc, migratepages),
TP_STRUCT__entry(
__field(unsigned long, nr_migrated)
__field(unsigned long, nr_failed)
),
TP_fast_assign(
unsigned long nr_failed = 0;
struct list_head *page_lru;
/*
* migrate_pages() returns either a non-negative number
* with the number of pages that failed migration, or an
* error code, in which case we need to count the remaining
* pages manually
*/
if (migrate_rc >= 0)
nr_failed = migrate_rc;
else
list_for_each(page_lru, migratepages)
nr_failed++;
__entry->nr_migrated = nr_all - nr_failed;
__entry->nr_failed = nr_failed;
),
TP_printk("nr_migrated=%lu nr_failed=%lu",
__entry->nr_migrated,
__entry->nr_failed)
);
TRACE_EVENT(mm_compaction_begin,
TP_PROTO(unsigned long zone_start, unsigned long migrate_pfn,
unsigned long free_pfn, unsigned long zone_end, bool sync),
TP_ARGS(zone_start, migrate_pfn, free_pfn, zone_end, sync),
TP_STRUCT__entry(
__field(unsigned long, zone_start)
__field(unsigned long, migrate_pfn)
__field(unsigned long, free_pfn)
__field(unsigned long, zone_end)
__field(bool, sync)
),
TP_fast_assign(
__entry->zone_start = zone_start;
__entry->migrate_pfn = migrate_pfn;
__entry->free_pfn = free_pfn;
__entry->zone_end = zone_end;
__entry->sync = sync;
),
TP_printk("zone_start=0x%lx migrate_pfn=0x%lx free_pfn=0x%lx zone_end=0x%lx, mode=%s",
__entry->zone_start,
__entry->migrate_pfn,
__entry->free_pfn,
__entry->zone_end,
__entry->sync ? "sync" : "async")
);
TRACE_EVENT(mm_compaction_end,
TP_PROTO(unsigned long zone_start, unsigned long migrate_pfn,
unsigned long free_pfn, unsigned long zone_end, bool sync,
int status),
TP_ARGS(zone_start, migrate_pfn, free_pfn, zone_end, sync, status),
TP_STRUCT__entry(
__field(unsigned long, zone_start)
__field(unsigned long, migrate_pfn)
__field(unsigned long, free_pfn)
__field(unsigned long, zone_end)
__field(bool, sync)
__field(int, status)
),
TP_fast_assign(
__entry->zone_start = zone_start;
__entry->migrate_pfn = migrate_pfn;
__entry->free_pfn = free_pfn;
__entry->zone_end = zone_end;
__entry->sync = sync;
__entry->status = status;
),
TP_printk("zone_start=0x%lx migrate_pfn=0x%lx free_pfn=0x%lx zone_end=0x%lx, mode=%s status=%s",
__entry->zone_start,
__entry->migrate_pfn,
__entry->free_pfn,
__entry->zone_end,
__entry->sync ? "sync" : "async",
__print_symbolic(__entry->status, COMPACTION_STATUS))
);
TRACE_EVENT(mm_compaction_try_to_compact_pages,
TP_PROTO(
int order,
gfp_t gfp_mask,
enum migrate_mode mode),
TP_ARGS(order, gfp_mask, mode),
TP_STRUCT__entry(
__field(int, order)
__field(gfp_t, gfp_mask)
__field(enum migrate_mode, mode)
),
TP_fast_assign(
__entry->order = order;
__entry->gfp_mask = gfp_mask;
__entry->mode = mode;
),
TP_printk("order=%d gfp_mask=0x%x mode=%d",
__entry->order,
__entry->gfp_mask,
(int)__entry->mode)
);
DECLARE_EVENT_CLASS(mm_compaction_suitable_template,
TP_PROTO(struct zone *zone,
int order,
int ret),
TP_ARGS(zone, order, ret),
TP_STRUCT__entry(
__field(int, nid)
__field(enum zone_type, idx)
__field(int, order)
__field(int, ret)
),
TP_fast_assign(
__entry->nid = zone_to_nid(zone);
__entry->idx = zone_idx(zone);
__entry->order = order;
__entry->ret = ret;
),
TP_printk("node=%d zone=%-8s order=%d ret=%s",
__entry->nid,
__print_symbolic(__entry->idx, ZONE_TYPE),
__entry->order,
__print_symbolic(__entry->ret, COMPACTION_STATUS))
);
DEFINE_EVENT(mm_compaction_suitable_template, mm_compaction_finished,
TP_PROTO(struct zone *zone,
int order,
int ret),
TP_ARGS(zone, order, ret)
);
DEFINE_EVENT(mm_compaction_suitable_template, mm_compaction_suitable,
TP_PROTO(struct zone *zone,
int order,
int ret),
TP_ARGS(zone, order, ret)
);
#ifdef CONFIG_COMPACTION
DECLARE_EVENT_CLASS(mm_compaction_defer_template,
TP_PROTO(struct zone *zone, int order),
TP_ARGS(zone, order),
TP_STRUCT__entry(
__field(int, nid)
__field(enum zone_type, idx)
__field(int, order)
__field(unsigned int, considered)
__field(unsigned int, defer_shift)
__field(int, order_failed)
),
TP_fast_assign(
__entry->nid = zone_to_nid(zone);
__entry->idx = zone_idx(zone);
__entry->order = order;
__entry->considered = zone->compact_considered;
__entry->defer_shift = zone->compact_defer_shift;
__entry->order_failed = zone->compact_order_failed;
),
TP_printk("node=%d zone=%-8s order=%d order_failed=%d consider=%u limit=%lu",
__entry->nid,
__print_symbolic(__entry->idx, ZONE_TYPE),
__entry->order,
__entry->order_failed,
__entry->considered,
1UL << __entry->defer_shift)
);
DEFINE_EVENT(mm_compaction_defer_template, mm_compaction_deferred,
TP_PROTO(struct zone *zone, int order),
TP_ARGS(zone, order)
);
DEFINE_EVENT(mm_compaction_defer_template, mm_compaction_defer_compaction,
TP_PROTO(struct zone *zone, int order),
TP_ARGS(zone, order)
);
DEFINE_EVENT(mm_compaction_defer_template, mm_compaction_defer_reset,
TP_PROTO(struct zone *zone, int order),
TP_ARGS(zone, order)
);
#endif
TRACE_EVENT(mm_compaction_kcompactd_sleep,
TP_PROTO(int nid),
TP_ARGS(nid),
TP_STRUCT__entry(
__field(int, nid)
),
TP_fast_assign(
__entry->nid = nid;
),
TP_printk("nid=%d", __entry->nid)
);
DECLARE_EVENT_CLASS(kcompactd_wake_template,
TP_PROTO(int nid, int order, enum zone_type classzone_idx),
TP_ARGS(nid, order, classzone_idx),
TP_STRUCT__entry(
__field(int, nid)
__field(int, order)
__field(enum zone_type, classzone_idx)
),
TP_fast_assign(
__entry->nid = nid;
__entry->order = order;
__entry->classzone_idx = classzone_idx;
),
TP_printk("nid=%d order=%d classzone_idx=%-8s",
__entry->nid,
__entry->order,
__print_symbolic(__entry->classzone_idx, ZONE_TYPE))
);
DEFINE_EVENT(kcompactd_wake_template, mm_compaction_wakeup_kcompactd,
TP_PROTO(int nid, int order, enum zone_type classzone_idx),
TP_ARGS(nid, order, classzone_idx)
);
DEFINE_EVENT(kcompactd_wake_template, mm_compaction_kcompactd_wake,
TP_PROTO(int nid, int order, enum zone_type classzone_idx),
TP_ARGS(nid, order, classzone_idx)
);
#endif /* _TRACE_COMPACTION_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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