diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index 36ab1152dbea..019cc87d0fb3 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -130,6 +130,7 @@ ssize_t iomap_dio_complete(struct iomap_dio *dio) if (ret > 0) ret += dio->done_before; + trace_iomap_dio_complete(iocb, dio->error, ret); kfree(dio); return ret; @@ -493,6 +494,8 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, struct blk_plug plug; struct iomap_dio *dio; + trace_iomap_dio_rw_begin(iocb, iter, dio_flags, done_before); + if (!iomi.len) return NULL; @@ -650,8 +653,10 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, */ dio->wait_for_completion = wait_for_completion; if (!atomic_dec_and_test(&dio->ref)) { - if (!wait_for_completion) + if (!wait_for_completion) { + trace_iomap_dio_rw_queued(inode, iomi.pos, iomi.len); return ERR_PTR(-EIOCBQUEUED); + } for (;;) { set_current_state(TASK_UNINTERRUPTIBLE); diff --git a/fs/iomap/trace.c b/fs/iomap/trace.c index da217246b1a9..728d5443daf5 100644 --- a/fs/iomap/trace.c +++ b/fs/iomap/trace.c @@ -3,6 +3,7 @@ * Copyright (c) 2019 Christoph Hellwig */ #include +#include /* * We include this last to have the helpers above available for the trace diff --git a/fs/iomap/trace.h b/fs/iomap/trace.h index f6ea9540d082..c16fd55f5595 100644 --- a/fs/iomap/trace.h +++ b/fs/iomap/trace.h @@ -83,6 +83,7 @@ DEFINE_RANGE_EVENT(iomap_writepage); DEFINE_RANGE_EVENT(iomap_release_folio); DEFINE_RANGE_EVENT(iomap_invalidate_folio); DEFINE_RANGE_EVENT(iomap_dio_invalidate_fail); +DEFINE_RANGE_EVENT(iomap_dio_rw_queued); #define IOMAP_TYPE_STRINGS \ { IOMAP_HOLE, "HOLE" }, \ @@ -107,6 +108,11 @@ DEFINE_RANGE_EVENT(iomap_dio_invalidate_fail); { IOMAP_F_BUFFER_HEAD, "BH" }, \ { IOMAP_F_SIZE_CHANGED, "SIZE_CHANGED" } +#define IOMAP_DIO_STRINGS \ + {IOMAP_DIO_FORCE_WAIT, "DIO_FORCE_WAIT" }, \ + {IOMAP_DIO_OVERWRITE_ONLY, "DIO_OVERWRITE_ONLY" }, \ + {IOMAP_DIO_PARTIAL, "DIO_PARTIAL" } + DECLARE_EVENT_CLASS(iomap_class, TP_PROTO(struct inode *inode, struct iomap *iomap), TP_ARGS(inode, iomap), @@ -183,6 +189,78 @@ TRACE_EVENT(iomap_iter, (void *)__entry->caller) ); +TRACE_EVENT(iomap_dio_rw_begin, + TP_PROTO(struct kiocb *iocb, struct iov_iter *iter, + unsigned int dio_flags, size_t done_before), + TP_ARGS(iocb, iter, dio_flags, done_before), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(loff_t, isize) + __field(loff_t, pos) + __field(size_t, count) + __field(size_t, done_before) + __field(int, ki_flags) + __field(unsigned int, dio_flags) + __field(bool, aio) + ), + TP_fast_assign( + __entry->dev = file_inode(iocb->ki_filp)->i_sb->s_dev; + __entry->ino = file_inode(iocb->ki_filp)->i_ino; + __entry->isize = file_inode(iocb->ki_filp)->i_size; + __entry->pos = iocb->ki_pos; + __entry->count = iov_iter_count(iter); + __entry->done_before = done_before; + __entry->ki_flags = iocb->ki_flags; + __entry->dio_flags = dio_flags; + __entry->aio = !is_sync_kiocb(iocb); + ), + TP_printk("dev %d:%d ino 0x%lx size 0x%llx offset 0x%llx length 0x%zx done_before 0x%zx flags %s dio_flags %s aio %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->isize, + __entry->pos, + __entry->count, + __entry->done_before, + __print_flags(__entry->ki_flags, "|", TRACE_IOCB_STRINGS), + __print_flags(__entry->dio_flags, "|", IOMAP_DIO_STRINGS), + __entry->aio) +); + +TRACE_EVENT(iomap_dio_complete, + TP_PROTO(struct kiocb *iocb, int error, ssize_t ret), + TP_ARGS(iocb, error, ret), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(loff_t, isize) + __field(loff_t, pos) + __field(int, ki_flags) + __field(bool, aio) + __field(int, error) + __field(ssize_t, ret) + ), + TP_fast_assign( + __entry->dev = file_inode(iocb->ki_filp)->i_sb->s_dev; + __entry->ino = file_inode(iocb->ki_filp)->i_ino; + __entry->isize = file_inode(iocb->ki_filp)->i_size; + __entry->pos = iocb->ki_pos; + __entry->ki_flags = iocb->ki_flags; + __entry->aio = !is_sync_kiocb(iocb); + __entry->error = error; + __entry->ret = ret; + ), + TP_printk("dev %d:%d ino 0x%lx size 0x%llx offset 0x%llx flags %s aio %d error %d ret %zd", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->isize, + __entry->pos, + __print_flags(__entry->ki_flags, "|", TRACE_IOCB_STRINGS), + __entry->aio, + __entry->error, + __entry->ret) +); + #endif /* _IOMAP_TRACE_H */ #undef TRACE_INCLUDE_PATH