Jens Axboe <axboe@xxxxxxxxx> writes: > On 01/17/2017 01:57 PM, Jeff Moyer wrote: >> Only a few bio-based drivers actually generate blktrace completion >> (C) events. Instead of changing all bio-based drivers to call >> trace_block_bio_complete, move the tracing to bio_complete, and remove >> the explicit tracing from the few drivers that actually do it. After >> this patch, there is exactly one caller of trace_block_bio_complete >> and one caller of trace_block_rq_complete. More importantly, all >> bio-based drivers now generate C events, which is useful for >> performance analysis. > > I like the change, hate the naming. I'd prefer one of two things: > > - Add bio_endio_complete() instead. That name sucks too, the > important part is flipping the __name() to have a trace > version instead. I had also considered bio_endio_notrace(). > - Mark the bio as trace completed, and keep the naming. Since > it's only off the completion path, that can be just marking > the bi_flags non-atomically. > > I probably prefer the latter. Hmm, okay. I'll take a crack at that. Thanks! Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
