diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h index 62df5990c3fc..09b58792762d 100644 --- a/include/trace/events/kmem.h +++ b/include/trace/events/kmem.h @@ -342,6 +342,39 @@ TRACE_EVENT(mm_alloc_contig_migrate_range_info, __entry->nr_mapped) ); +TRACE_EVENT(mm_setup_per_zone_wmarks, + + TP_PROTO(struct zone *zone), + + TP_ARGS(zone), + + TP_STRUCT__entry( + __field(int, node_id) + __string(name, zone->name) + __field(unsigned long, watermark_min) + __field(unsigned long, watermark_low) + __field(unsigned long, watermark_high) + __field(unsigned long, watermark_promo) + ), + + TP_fast_assign( + __entry->node_id = zone->zone_pgdat->node_id; + __assign_str(name, zone->name); + __entry->watermark_min = zone->_watermark[WMARK_MIN]; + __entry->watermark_low = zone->_watermark[WMARK_LOW]; + __entry->watermark_high = zone->_watermark[WMARK_HIGH]; + __entry->watermark_promo = zone->_watermark[WMARK_PROMO]; + ), + + TP_printk("node_id=%d zone name=%s watermark min=%lu low=%lu high=%lu promo=%lu", + __entry->node_id, + __get_str(name), + __entry->watermark_min, + __entry->watermark_low, + __entry->watermark_high, + __entry->watermark_promo) +); + /* * Required for uniquely and securely identifying mm in rss_stat tracepoint. */ diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 28004c549031..ca88e02fdbe4 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -9070,6 +9070,7 @@ static void __setup_per_zone_wmarks(void) zone->_watermark[WMARK_LOW] = min_wmark_pages(zone) + tmp; zone->_watermark[WMARK_HIGH] = low_wmark_pages(zone) + tmp; zone->_watermark[WMARK_PROMO] = high_wmark_pages(zone) + tmp; + trace_mm_setup_per_zone_wmarks(zone); spin_unlock_irqrestore(&zone->lock, flags); }