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This commit adds a tracepoint for DAMON. It traces the monitoring results of each region for each aggregation interval. Using this, DAMON can easily integrated with tracepoints supporting tools such as perf. Link: https://lkml.kernel.org/r/20210716081449.22187-7-sj38.park@gmail.com Signed-off-by: SeongJae Park <sjpark@amazon.de> Reviewed-by: Leonard Foerster <foersleo@amazon.de> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Fernand Sieber <sieberf@amazon.com> Acked-by: Shakeel Butt <shakeelb@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Amit Shah <amit@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: David Woodhouse <dwmw@amazon.com> Cc: Fan Du <fan.du@intel.com> Cc: Greg Kroah-Hartman <greg@kroah.com> Cc: Greg Thelen <gthelen@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marco Elver <elver@google.com> Cc: Markus Boehme <markubo@amazon.de> Cc: Maximilian Heyne <mheyne@amazon.de> Cc: Mel Gorman <mgorman@suse.de> Cc: Minchan Kim <minchan@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
43 lines
1 KiB
C
43 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM damon
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#if !defined(_TRACE_DAMON_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_DAMON_H
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#include <linux/damon.h>
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#include <linux/types.h>
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#include <linux/tracepoint.h>
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TRACE_EVENT(damon_aggregated,
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TP_PROTO(struct damon_target *t, struct damon_region *r,
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unsigned int nr_regions),
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TP_ARGS(t, r, nr_regions),
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TP_STRUCT__entry(
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__field(unsigned long, target_id)
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__field(unsigned int, nr_regions)
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__field(unsigned long, start)
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__field(unsigned long, end)
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__field(unsigned int, nr_accesses)
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),
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TP_fast_assign(
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__entry->target_id = t->id;
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__entry->nr_regions = nr_regions;
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__entry->start = r->ar.start;
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__entry->end = r->ar.end;
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__entry->nr_accesses = r->nr_accesses;
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),
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TP_printk("target_id=%lu nr_regions=%u %lu-%lu: %u",
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__entry->target_id, __entry->nr_regions,
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__entry->start, __entry->end, __entry->nr_accesses)
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);
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#endif /* _TRACE_DAMON_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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