159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM wbt
|
|
|
|
#if !defined(_TRACE_WBT_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_WBT_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
#include "../../../block/blk-wbt.h"
|
|
|
|
/**
|
|
* wbt_stat - trace stats for blk_wb
|
|
* @stat: array of read/write stats
|
|
*/
|
|
TRACE_EVENT(wbt_stat,
|
|
|
|
TP_PROTO(struct backing_dev_info *bdi, struct blk_rq_stat *stat),
|
|
|
|
TP_ARGS(bdi, stat),
|
|
|
|
TP_STRUCT__entry(
|
|
__array(char, name, 32)
|
|
__field(s64, rmean)
|
|
__field(u64, rmin)
|
|
__field(u64, rmax)
|
|
__field(s64, rnr_samples)
|
|
__field(s64, rtime)
|
|
__field(s64, wmean)
|
|
__field(u64, wmin)
|
|
__field(u64, wmax)
|
|
__field(s64, wnr_samples)
|
|
__field(s64, wtime)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
strscpy(__entry->name, bdi_dev_name(bdi),
|
|
ARRAY_SIZE(__entry->name));
|
|
__entry->rmean = stat[0].mean;
|
|
__entry->rmin = stat[0].min;
|
|
__entry->rmax = stat[0].max;
|
|
__entry->rnr_samples = stat[0].nr_samples;
|
|
__entry->wmean = stat[1].mean;
|
|
__entry->wmin = stat[1].min;
|
|
__entry->wmax = stat[1].max;
|
|
__entry->wnr_samples = stat[1].nr_samples;
|
|
),
|
|
|
|
TP_printk("%s: rmean=%llu, rmin=%llu, rmax=%llu, rsamples=%llu, "
|
|
"wmean=%llu, wmin=%llu, wmax=%llu, wsamples=%llu",
|
|
__entry->name, __entry->rmean, __entry->rmin, __entry->rmax,
|
|
__entry->rnr_samples, __entry->wmean, __entry->wmin,
|
|
__entry->wmax, __entry->wnr_samples)
|
|
);
|
|
|
|
/**
|
|
* wbt_lat - trace latency event
|
|
* @lat: latency trigger
|
|
*/
|
|
TRACE_EVENT(wbt_lat,
|
|
|
|
TP_PROTO(struct backing_dev_info *bdi, unsigned long lat),
|
|
|
|
TP_ARGS(bdi, lat),
|
|
|
|
TP_STRUCT__entry(
|
|
__array(char, name, 32)
|
|
__field(unsigned long, lat)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
strscpy(__entry->name, bdi_dev_name(bdi),
|
|
ARRAY_SIZE(__entry->name));
|
|
__entry->lat = div_u64(lat, 1000);
|
|
),
|
|
|
|
TP_printk("%s: latency %lluus", __entry->name,
|
|
(unsigned long long) __entry->lat)
|
|
);
|
|
|
|
/**
|
|
* wbt_step - trace wb event step
|
|
* @msg: context message
|
|
* @step: the current scale step count
|
|
* @window: the current monitoring window
|
|
* @bg: the current background queue limit
|
|
* @normal: the current normal writeback limit
|
|
* @max: the current max throughput writeback limit
|
|
*/
|
|
TRACE_EVENT(wbt_step,
|
|
|
|
TP_PROTO(struct backing_dev_info *bdi, const char *msg,
|
|
int step, unsigned long window, unsigned int bg,
|
|
unsigned int normal, unsigned int max),
|
|
|
|
TP_ARGS(bdi, msg, step, window, bg, normal, max),
|
|
|
|
TP_STRUCT__entry(
|
|
__array(char, name, 32)
|
|
__field(const char *, msg)
|
|
__field(int, step)
|
|
__field(unsigned long, window)
|
|
__field(unsigned int, bg)
|
|
__field(unsigned int, normal)
|
|
__field(unsigned int, max)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
strscpy(__entry->name, bdi_dev_name(bdi),
|
|
ARRAY_SIZE(__entry->name));
|
|
__entry->msg = msg;
|
|
__entry->step = step;
|
|
__entry->window = div_u64(window, 1000);
|
|
__entry->bg = bg;
|
|
__entry->normal = normal;
|
|
__entry->max = max;
|
|
),
|
|
|
|
TP_printk("%s: %s: step=%d, window=%luus, background=%u, normal=%u, max=%u",
|
|
__entry->name, __entry->msg, __entry->step, __entry->window,
|
|
__entry->bg, __entry->normal, __entry->max)
|
|
);
|
|
|
|
/**
|
|
* wbt_timer - trace wb timer event
|
|
* @status: timer state status
|
|
* @step: the current scale step count
|
|
* @inflight: tracked writes inflight
|
|
*/
|
|
TRACE_EVENT(wbt_timer,
|
|
|
|
TP_PROTO(struct backing_dev_info *bdi, unsigned int status,
|
|
int step, unsigned int inflight),
|
|
|
|
TP_ARGS(bdi, status, step, inflight),
|
|
|
|
TP_STRUCT__entry(
|
|
__array(char, name, 32)
|
|
__field(unsigned int, status)
|
|
__field(int, step)
|
|
__field(unsigned int, inflight)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
strscpy(__entry->name, bdi_dev_name(bdi),
|
|
ARRAY_SIZE(__entry->name));
|
|
__entry->status = status;
|
|
__entry->step = step;
|
|
__entry->inflight = inflight;
|
|
),
|
|
|
|
TP_printk("%s: status=%u, step=%d, inflight=%u", __entry->name,
|
|
__entry->status, __entry->step, __entry->inflight)
|
|
);
|
|
|
|
#endif /* _TRACE_WBT_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|