trace_wbt_stat(9)

💖 trace_wbt_stat(9) 💖

okay so welcome to the Kernel API Manual, bestie — today's main character is trace_wbt_stat, and it's giving short-but-useful energy. 💅

🌸 NAME 🌸

trace_wbt_stat — trace stats for blk_wb. That's the whole name, no cap. 💖

✨ SYNOPSIS ✨

void trace_wbt_stat (struct backing_dev_info *bdi , struct blk_rq_stat
       *stat );

It returns void, so there's no return-value plot twist here. 🫶

💅 ARGUMENTS 💅

• bdi — the original page literally says -- undescribed --, so we're not inventing lore. It's just the struct backing_dev_info * from the synopsis, bestie. 🙈
• stat — array of read/write stats. That's the useful bit, slay. ✨

🦋 SEE ALSO 🦋

• Kernel file ./include/trace/events/wbt.h
• trace_wbt_lat(9)
• trace_wbt_step(9)
• trace_wbt_timer(9)

lowkey go read those sister pages if you want the full lore — iykyk. 🧚

🫶 source/version: ./include/trace/events · date: October 2026 🫶