mirror of
https://github.com/torvalds/linux.git
synced 2026-03-08 04:24:31 +01:00
804c26b961
DAMON users can read DAMOS stats via DAMON sysfs interface. It enables efficient, simple and flexible usages of the stats. Especially for systems not having advanced tools like perf or bpftrace, that can be useful. But if the advanced tools are available, exposing the stats via tracepoint can reduce unnecessary reimplementation of the wheels. Add a new tracepoint for DAMOS stats, namely damos_stat_after_apply_interval. The tracepoint is triggered for each scheme's apply interval and exposes the whole stat values. If the user needs sub-apply interval information for any chance, damos_before_apply tracepoint could be used. Link: https://lkml.kernel.org/r/20251216080128.42991-13-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
167 lines
4.3 KiB
C
167 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM damon
|
|
|
|
#if !defined(_TRACE_DAMON_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_DAMON_H
|
|
|
|
#include <linux/damon.h>
|
|
#include <linux/types.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
TRACE_EVENT(damos_stat_after_apply_interval,
|
|
|
|
TP_PROTO(unsigned int context_idx, unsigned int scheme_idx,
|
|
struct damos_stat *stat),
|
|
|
|
TP_ARGS(context_idx, scheme_idx, stat),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned int, context_idx)
|
|
__field(unsigned int, scheme_idx)
|
|
__field(unsigned long, nr_tried)
|
|
__field(unsigned long, sz_tried)
|
|
__field(unsigned long, nr_applied)
|
|
__field(unsigned long, sz_applied)
|
|
__field(unsigned long, sz_ops_filter_passed)
|
|
__field(unsigned long, qt_exceeds)
|
|
__field(unsigned long, nr_snapshots)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->context_idx = context_idx;
|
|
__entry->scheme_idx = scheme_idx;
|
|
__entry->nr_tried = stat->nr_tried;
|
|
__entry->sz_tried = stat->sz_tried;
|
|
__entry->nr_applied = stat->nr_applied;
|
|
__entry->sz_applied = stat->sz_applied;
|
|
__entry->sz_ops_filter_passed = stat->sz_ops_filter_passed;
|
|
__entry->qt_exceeds = stat->qt_exceeds;
|
|
__entry->nr_snapshots = stat->nr_snapshots;
|
|
),
|
|
|
|
TP_printk("ctx_idx=%u scheme_idx=%u nr_tried=%lu sz_tried=%lu "
|
|
"nr_applied=%lu sz_tried=%lu sz_ops_filter_passed=%lu "
|
|
"qt_exceeds=%lu nr_snapshots=%lu",
|
|
__entry->context_idx, __entry->scheme_idx,
|
|
__entry->nr_tried, __entry->sz_tried,
|
|
__entry->nr_applied, __entry->sz_applied,
|
|
__entry->sz_ops_filter_passed, __entry->qt_exceeds,
|
|
__entry->nr_snapshots)
|
|
);
|
|
|
|
TRACE_EVENT(damos_esz,
|
|
|
|
TP_PROTO(unsigned int context_idx, unsigned int scheme_idx,
|
|
unsigned long esz),
|
|
|
|
TP_ARGS(context_idx, scheme_idx, esz),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned int, context_idx)
|
|
__field(unsigned int, scheme_idx)
|
|
__field(unsigned long, esz)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->context_idx = context_idx;
|
|
__entry->scheme_idx = scheme_idx;
|
|
__entry->esz = esz;
|
|
),
|
|
|
|
TP_printk("ctx_idx=%u scheme_idx=%u esz=%lu",
|
|
__entry->context_idx, __entry->scheme_idx,
|
|
__entry->esz)
|
|
);
|
|
|
|
TRACE_EVENT_CONDITION(damos_before_apply,
|
|
|
|
TP_PROTO(unsigned int context_idx, unsigned int scheme_idx,
|
|
unsigned int target_idx, struct damon_region *r,
|
|
unsigned int nr_regions, bool do_trace),
|
|
|
|
TP_ARGS(context_idx, scheme_idx, target_idx, r, nr_regions, do_trace),
|
|
|
|
TP_CONDITION(do_trace),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned int, context_idx)
|
|
__field(unsigned int, scheme_idx)
|
|
__field(unsigned long, target_idx)
|
|
__field(unsigned long, start)
|
|
__field(unsigned long, end)
|
|
__field(unsigned int, nr_accesses)
|
|
__field(unsigned int, age)
|
|
__field(unsigned int, nr_regions)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->context_idx = context_idx;
|
|
__entry->scheme_idx = scheme_idx;
|
|
__entry->target_idx = target_idx;
|
|
__entry->start = r->ar.start;
|
|
__entry->end = r->ar.end;
|
|
__entry->nr_accesses = r->nr_accesses_bp / 10000;
|
|
__entry->age = r->age;
|
|
__entry->nr_regions = nr_regions;
|
|
),
|
|
|
|
TP_printk("ctx_idx=%u scheme_idx=%u target_idx=%lu nr_regions=%u %lu-%lu: %u %u",
|
|
__entry->context_idx, __entry->scheme_idx,
|
|
__entry->target_idx, __entry->nr_regions,
|
|
__entry->start, __entry->end,
|
|
__entry->nr_accesses, __entry->age)
|
|
);
|
|
|
|
TRACE_EVENT(damon_monitor_intervals_tune,
|
|
|
|
TP_PROTO(unsigned long sample_us),
|
|
|
|
TP_ARGS(sample_us),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned long, sample_us)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->sample_us = sample_us;
|
|
),
|
|
|
|
TP_printk("sample_us=%lu", __entry->sample_us)
|
|
);
|
|
|
|
TRACE_EVENT(damon_aggregated,
|
|
|
|
TP_PROTO(unsigned int target_id, struct damon_region *r,
|
|
unsigned int nr_regions),
|
|
|
|
TP_ARGS(target_id, r, nr_regions),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(unsigned long, target_id)
|
|
__field(unsigned int, nr_regions)
|
|
__field(unsigned long, start)
|
|
__field(unsigned long, end)
|
|
__field(unsigned int, nr_accesses)
|
|
__field(unsigned int, age)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->target_id = target_id;
|
|
__entry->nr_regions = nr_regions;
|
|
__entry->start = r->ar.start;
|
|
__entry->end = r->ar.end;
|
|
__entry->nr_accesses = r->nr_accesses;
|
|
__entry->age = r->age;
|
|
),
|
|
|
|
TP_printk("target_id=%lu nr_regions=%u %lu-%lu: %u %u",
|
|
__entry->target_id, __entry->nr_regions,
|
|
__entry->start, __entry->end,
|
|
__entry->nr_accesses, __entry->age)
|
|
);
|
|
|
|
#endif /* _TRACE_DAMON_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|