vmscan.h

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#undef TRACE_SYSTEM
#define TRACE_SYSTEM vmscan

#if !defined(_TRACE_VMSCAN_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_VMSCAN_H

#include <linux/types.h>
#include <linux/tracepoint.h>
#include <linux/mm.h>
#include <linux/memcontrol.h>
#include <trace/events/gfpflags.h>

#define RECLAIM_WB_ANON     0x0001u
#define RECLAIM_WB_FILE     0x0002u
#define RECLAIM_WB_MIXED    0x0010u
#define RECLAIM_WB_SYNC     0x0004u /* Unused, all reclaim async */
#define RECLAIM_WB_ASYNC    0x0008u

#define show_reclaim_flags(flags)               \
    (flags) ? __print_flags(flags, "|",         \
        {RECLAIM_WB_ANON,   "RECLAIM_WB_ANON"}, \
        {RECLAIM_WB_FILE,   "RECLAIM_WB_FILE"}, \
        {RECLAIM_WB_MIXED,  "RECLAIM_WB_MIXED"},    \
        {RECLAIM_WB_SYNC,   "RECLAIM_WB_SYNC"}, \
        {RECLAIM_WB_ASYNC,  "RECLAIM_WB_ASYNC"} \
        ) : "RECLAIM_WB_NONE"

#define trace_reclaim_flags(page) ( \
    (page_is_file_cache(page) ? RECLAIM_WB_FILE : RECLAIM_WB_ANON) | \
    (RECLAIM_WB_ASYNC) \
    )

#define trace_shrink_flags(file) \
    ( \
        (file ? RECLAIM_WB_FILE : RECLAIM_WB_ANON) | \
        (RECLAIM_WB_ASYNC) \
    )

TRACE_EVENT(mm_vmscan_kswapd_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)
);

TRACE_EVENT(mm_vmscan_kswapd_wake,

    TP_PROTO(int nid, int order),

    TP_ARGS(nid, order),

    TP_STRUCT__entry(
        __field(    int,    nid )
        __field(    int,    order   )
    ),

    TP_fast_assign(
        __entry->nid    = nid;
        __entry->order  = order;
    ),

    TP_printk("nid=%d order=%d", __entry->nid, __entry->order)
);

TRACE_EVENT(mm_vmscan_wakeup_kswapd,

    TP_PROTO(int nid, int zid, int order),

    TP_ARGS(nid, zid, order),

    TP_STRUCT__entry(
        __field(    int,        nid )
        __field(    int,        zid )
        __field(    int,        order   )
    ),

    TP_fast_assign(
        __entry->nid        = nid;
        __entry->zid        = zid;
        __entry->order      = order;
    ),

    TP_printk("nid=%d zid=%d order=%d",
        __entry->nid,
        __entry->zid,
        __entry->order)
);

DECLARE_EVENT_CLASS(mm_vmscan_direct_reclaim_begin_template,

    TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),

    TP_ARGS(order, may_writepage, gfp_flags),

    TP_STRUCT__entry(
        __field(    int,    order       )
        __field(    int,    may_writepage   )
        __field(    gfp_t,  gfp_flags   )
    ),

    TP_fast_assign(
        __entry->order      = order;
        __entry->may_writepage  = may_writepage;
        __entry->gfp_flags  = gfp_flags;
    ),

    TP_printk("order=%d may_writepage=%d gfp_flags=%s",
        __entry->order,
        __entry->may_writepage,
        show_gfp_flags(__entry->gfp_flags))
);

DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_direct_reclaim_begin,

    TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),

    TP_ARGS(order, may_writepage, gfp_flags)
);

DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_memcg_reclaim_begin,

    TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),

    TP_ARGS(order, may_writepage, gfp_flags)
);

DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_memcg_softlimit_reclaim_begin,

    TP_PROTO(int order, int may_writepage, gfp_t gfp_flags),

    TP_ARGS(order, may_writepage, gfp_flags)
);

DECLARE_EVENT_CLASS(mm_vmscan_direct_reclaim_end_template,

    TP_PROTO(unsigned long nr_reclaimed),

    TP_ARGS(nr_reclaimed),

    TP_STRUCT__entry(
        __field(    unsigned long,  nr_reclaimed    )
    ),

    TP_fast_assign(
        __entry->nr_reclaimed   = nr_reclaimed;
    ),

    TP_printk("nr_reclaimed=%lu", __entry->nr_reclaimed)
);

DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_direct_reclaim_end,

    TP_PROTO(unsigned long nr_reclaimed),

    TP_ARGS(nr_reclaimed)
);

DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_memcg_reclaim_end,

    TP_PROTO(unsigned long nr_reclaimed),

    TP_ARGS(nr_reclaimed)
);

DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_memcg_softlimit_reclaim_end,

    TP_PROTO(unsigned long nr_reclaimed),

    TP_ARGS(nr_reclaimed)
);

TRACE_EVENT(mm_shrink_slab_start,
    TP_PROTO(struct shrinker *shr, struct shrink_control *sc,
        long nr_objects_to_shrink, unsigned long pgs_scanned,
        unsigned long lru_pgs, unsigned long cache_items,
        unsigned long long delta, unsigned long total_scan),

    TP_ARGS(shr, sc, nr_objects_to_shrink, pgs_scanned, lru_pgs,
        cache_items, delta, total_scan),

    TP_STRUCT__entry(
        __field(struct shrinker *, shr)
        __field(void *, shrink)
        __field(long, nr_objects_to_shrink)
        __field(gfp_t, gfp_flags)
        __field(unsigned long, pgs_scanned)
        __field(unsigned long, lru_pgs)
        __field(unsigned long, cache_items)
        __field(unsigned long long, delta)
        __field(unsigned long, total_scan)
    ),

    TP_fast_assign(
        __entry->shr = shr;
        __entry->shrink = shr->shrink;
        __entry->nr_objects_to_shrink = nr_objects_to_shrink;
        __entry->gfp_flags = sc->gfp_mask;
        __entry->pgs_scanned = pgs_scanned;
        __entry->lru_pgs = lru_pgs;
        __entry->cache_items = cache_items;
        __entry->delta = delta;
        __entry->total_scan = total_scan;
    ),

    TP_printk("%pF %p: objects to shrink %ld gfp_flags %s pgs_scanned %ld lru_pgs %ld cache items %ld delta %lld total_scan %ld",
        __entry->shrink,
        __entry->shr,
        __entry->nr_objects_to_shrink,
        show_gfp_flags(__entry->gfp_flags),
        __entry->pgs_scanned,
        __entry->lru_pgs,
        __entry->cache_items,
        __entry->delta,
        __entry->total_scan)
);

TRACE_EVENT(mm_shrink_slab_end,
    TP_PROTO(struct shrinker *shr, int shrinker_retval,
        long unused_scan_cnt, long new_scan_cnt),

    TP_ARGS(shr, shrinker_retval, unused_scan_cnt, new_scan_cnt),

    TP_STRUCT__entry(
        __field(struct shrinker *, shr)
        __field(void *, shrink)
        __field(long, unused_scan)
        __field(long, new_scan)
        __field(int, retval)
        __field(long, total_scan)
    ),

    TP_fast_assign(
        __entry->shr = shr;
        __entry->shrink = shr->shrink;
        __entry->unused_scan = unused_scan_cnt;
        __entry->new_scan = new_scan_cnt;
        __entry->retval = shrinker_retval;
        __entry->total_scan = new_scan_cnt - unused_scan_cnt;
    ),

    TP_printk("%pF %p: unused scan count %ld new scan count %ld total_scan %ld last shrinker return val %d",
        __entry->shrink,
        __entry->shr,
        __entry->unused_scan,
        __entry->new_scan,
        __entry->total_scan,
        __entry->retval)
);

DECLARE_EVENT_CLASS(mm_vmscan_lru_isolate_template,

    TP_PROTO(int order,
        unsigned long nr_requested,
        unsigned long nr_scanned,
        unsigned long nr_taken,
        isolate_mode_t isolate_mode,
        int file),

    TP_ARGS(order, nr_requested, nr_scanned, nr_taken, isolate_mode, file),

    TP_STRUCT__entry(
        __field(int, order)
        __field(unsigned long, nr_requested)
        __field(unsigned long, nr_scanned)
        __field(unsigned long, nr_taken)
        __field(isolate_mode_t, isolate_mode)
        __field(int, file)
    ),

    TP_fast_assign(
        __entry->order = order;
        __entry->nr_requested = nr_requested;
        __entry->nr_scanned = nr_scanned;
        __entry->nr_taken = nr_taken;
        __entry->isolate_mode = isolate_mode;
        __entry->file = file;
    ),

    TP_printk("isolate_mode=%d order=%d nr_requested=%lu nr_scanned=%lu nr_taken=%lu file=%d",
        __entry->isolate_mode,
        __entry->order,
        __entry->nr_requested,
        __entry->nr_scanned,
        __entry->nr_taken,
        __entry->file)
);

DEFINE_EVENT(mm_vmscan_lru_isolate_template, mm_vmscan_lru_isolate,

    TP_PROTO(int order,
        unsigned long nr_requested,
        unsigned long nr_scanned,
        unsigned long nr_taken,
        isolate_mode_t isolate_mode,
        int file),

    TP_ARGS(order, nr_requested, nr_scanned, nr_taken, isolate_mode, file)

);

DEFINE_EVENT(mm_vmscan_lru_isolate_template, mm_vmscan_memcg_isolate,

    TP_PROTO(int order,
        unsigned long nr_requested,
        unsigned long nr_scanned,
        unsigned long nr_taken,
        isolate_mode_t isolate_mode,
        int file),

    TP_ARGS(order, nr_requested, nr_scanned, nr_taken, isolate_mode, file)

);

TRACE_EVENT(mm_vmscan_writepage,

    TP_PROTO(struct page *page,
        int reclaim_flags),

    TP_ARGS(page, reclaim_flags),

    TP_STRUCT__entry(
        __field(struct page *, page)
        __field(int, reclaim_flags)
    ),

    TP_fast_assign(
        __entry->page = page;
        __entry->reclaim_flags = reclaim_flags;
    ),

    TP_printk("page=%p pfn=%lu flags=%s",
        __entry->page,
        page_to_pfn(__entry->page),
        show_reclaim_flags(__entry->reclaim_flags))
);

TRACE_EVENT(mm_vmscan_lru_shrink_inactive,

    TP_PROTO(int nid, int zid,
            unsigned long nr_scanned, unsigned long nr_reclaimed,
            int priority, int reclaim_flags),

    TP_ARGS(nid, zid, nr_scanned, nr_reclaimed, priority, reclaim_flags),

    TP_STRUCT__entry(
        __field(int, nid)
        __field(int, zid)
        __field(unsigned long, nr_scanned)
        __field(unsigned long, nr_reclaimed)
        __field(int, priority)
        __field(int, reclaim_flags)
    ),

    TP_fast_assign(
        __entry->nid = nid;
        __entry->zid = zid;
        __entry->nr_scanned = nr_scanned;
        __entry->nr_reclaimed = nr_reclaimed;
        __entry->priority = priority;
        __entry->reclaim_flags = reclaim_flags;
    ),

    TP_printk("nid=%d zid=%d nr_scanned=%ld nr_reclaimed=%ld priority=%d flags=%s",
        __entry->nid, __entry->zid,
        __entry->nr_scanned, __entry->nr_reclaimed,
        __entry->priority,
        show_reclaim_flags(__entry->reclaim_flags))
);

#endif /* _TRACE_VMSCAN_H */

/* This part must be outside protection */
#include <trace/define_trace.h>