123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159 |
- /* 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(
- strlcpy(__entry->name, dev_name(bdi->dev),
- 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\n",
- __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(
- strlcpy(__entry->name, dev_name(bdi->dev),
- ARRAY_SIZE(__entry->name));
- __entry->lat = div_u64(lat, 1000);
- ),
- TP_printk("%s: latency %lluus\n", __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(
- strlcpy(__entry->name, dev_name(bdi->dev),
- 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\n",
- __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(
- strlcpy(__entry->name, dev_name(bdi->dev),
- ARRAY_SIZE(__entry->name));
- __entry->status = status;
- __entry->step = step;
- __entry->inflight = inflight;
- ),
- TP_printk("%s: status=%u, step=%d, inflight=%u\n", __entry->name,
- __entry->status, __entry->step, __entry->inflight)
- );
- #endif /* _TRACE_WBT_H */
- /* This part must be outside protection */
- #include <trace/define_trace.h>
|