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linux/include/trace/events/netfs.h
David Howells 89635eae07
netfs: Fix race between cache write completion and ALL_QUEUED being set 
When netfslib is issuing subrequests, the subrequests start processing
immediately and may complete before we reach the end of the issuing
function.  At the end of the issuing function we set NETFS_RREQ_ALL_QUEUED
to indicate to the collector that we aren't going to issue any more subreqs
and that it can do the final notifications and cleanup.

Now, this isn't a problem if the request is synchronous
(NETFS_RREQ_OFFLOAD_COLLECTION is unset) as the result collection will be
done in-thread and we're guaranteed an opportunity to run the collector.

However, if the request is asynchronous, collection is primarily triggered
by the termination of subrequests queuing it on a workqueue.  Now, a race
can occur here if the app thread sets ALL_QUEUED after the last subrequest
terminates.

This can happen most easily with the copy2cache code (as used by Ceph)
where, in the collection routine of a read request, an asynchronous write
request is spawned to copy data to the cache.  Folios are added to the
write request as they're unlocked, but there may be a delay before
ALL_QUEUED is set as the write subrequests may complete before we get
there.

If all the write subreqs have finished by the ALL_QUEUED point, no further
events happen and the collection never happens, leaving the request
hanging.

Fix this by queuing the collector after setting ALL_QUEUED.  This is a bit
heavy-handed and it may be sufficient to do it only if there are no extant
subreqs.

Also add a tracepoint to cross-reference both requests in a copy-to-request
operation and add a trace to the netfs_rreq tracepoint to indicate the
setting of ALL_QUEUED.

Fixes: e2d46f2ec3 ("netfs: Change the read result collector to only use one work item")
Reported-by: Max Kellermann <max.kellermann@ionos.com>
Link: https://lore.kernel.org/r/CAKPOu+8z_ijTLHdiCYGU_Uk7yYD=shxyGLwfe-L7AV3DhebS3w@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/20250711151005.2956810-3-dhowells@redhat.com
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Viacheslav Dubeyko <slava@dubeyko.com>
cc: Alex Markuze <amarkuze@redhat.com>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: netfs@lists.linux.dev
cc: ceph-devel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-07-14 11:05:02 +02:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Network filesystem support module tracepoints
*
* Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM netfs
#if !defined(_TRACE_NETFS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_NETFS_H
#include <linux/tracepoint.h>
/*
* Define enums for tracing information.
*/
#define netfs_read_traces \
EM(netfs_read_trace_dio_read, "DIO-READ ") \
EM(netfs_read_trace_expanded, "EXPANDED ") \
EM(netfs_read_trace_readahead, "READAHEAD") \
EM(netfs_read_trace_readpage, "READPAGE ") \
EM(netfs_read_trace_read_gaps, "READ-GAPS") \
EM(netfs_read_trace_read_single, "READ-SNGL") \
EM(netfs_read_trace_prefetch_for_write, "PREFETCHW") \
E_(netfs_read_trace_write_begin, "WRITEBEGN")
#define netfs_write_traces \
EM(netfs_write_trace_copy_to_cache, "COPY2CACH") \
EM(netfs_write_trace_dio_write, "DIO-WRITE") \
EM(netfs_write_trace_unbuffered_write, "UNB-WRITE") \
EM(netfs_write_trace_writeback, "WRITEBACK") \
EM(netfs_write_trace_writeback_single, "WB-SINGLE") \
E_(netfs_write_trace_writethrough, "WRITETHRU")
#define netfs_rreq_origins \
EM(NETFS_READAHEAD, "RA") \
EM(NETFS_READPAGE, "RP") \
EM(NETFS_READ_GAPS, "RG") \
EM(NETFS_READ_SINGLE, "R1") \
EM(NETFS_READ_FOR_WRITE, "RW") \
EM(NETFS_UNBUFFERED_READ, "UR") \
EM(NETFS_DIO_READ, "DR") \
EM(NETFS_WRITEBACK, "WB") \
EM(NETFS_WRITEBACK_SINGLE, "W1") \
EM(NETFS_WRITETHROUGH, "WT") \
EM(NETFS_UNBUFFERED_WRITE, "UW") \
EM(NETFS_DIO_WRITE, "DW") \
E_(NETFS_PGPRIV2_COPY_TO_CACHE, "2C")
#define netfs_rreq_traces \
EM(netfs_rreq_trace_assess, "ASSESS ") \
EM(netfs_rreq_trace_collect, "COLLECT") \
EM(netfs_rreq_trace_complete, "COMPLET") \
EM(netfs_rreq_trace_copy, "COPY ") \
EM(netfs_rreq_trace_dirty, "DIRTY ") \
EM(netfs_rreq_trace_done, "DONE ") \
EM(netfs_rreq_trace_end_copy_to_cache, "END-C2C") \
EM(netfs_rreq_trace_free, "FREE ") \
EM(netfs_rreq_trace_ki_complete, "KI-CMPL") \
EM(netfs_rreq_trace_recollect, "RECLLCT") \
EM(netfs_rreq_trace_redirty, "REDIRTY") \
EM(netfs_rreq_trace_resubmit, "RESUBMT") \
EM(netfs_rreq_trace_set_abandon, "S-ABNDN") \
EM(netfs_rreq_trace_set_pause, "PAUSE ") \
EM(netfs_rreq_trace_unlock, "UNLOCK ") \
EM(netfs_rreq_trace_unlock_pgpriv2, "UNLCK-2") \
EM(netfs_rreq_trace_unmark, "UNMARK ") \
EM(netfs_rreq_trace_unpause, "UNPAUSE") \
EM(netfs_rreq_trace_wait_ip, "WAIT-IP") \
EM(netfs_rreq_trace_wait_pause, "--PAUSED--") \
EM(netfs_rreq_trace_wait_quiesce, "WAIT-QUIESCE") \
EM(netfs_rreq_trace_waited_ip, "DONE-IP") \
EM(netfs_rreq_trace_waited_pause, "--UNPAUSED--") \
EM(netfs_rreq_trace_waited_quiesce, "DONE-QUIESCE") \
EM(netfs_rreq_trace_wake_ip, "WAKE-IP") \
EM(netfs_rreq_trace_wake_queue, "WAKE-Q ") \
E_(netfs_rreq_trace_write_done, "WR-DONE")
#define netfs_sreq_sources \
EM(NETFS_SOURCE_UNKNOWN, "----") \
EM(NETFS_FILL_WITH_ZEROES, "ZERO") \
EM(NETFS_DOWNLOAD_FROM_SERVER, "DOWN") \
EM(NETFS_READ_FROM_CACHE, "READ") \
EM(NETFS_INVALID_READ, "INVL") \
EM(NETFS_UPLOAD_TO_SERVER, "UPLD") \
E_(NETFS_WRITE_TO_CACHE, "WRIT")
#define netfs_sreq_traces \
EM(netfs_sreq_trace_abandoned, "ABNDN") \
EM(netfs_sreq_trace_add_donations, "+DON ") \
EM(netfs_sreq_trace_added, "ADD ") \
EM(netfs_sreq_trace_cache_nowrite, "CA-NW") \
EM(netfs_sreq_trace_cache_prepare, "CA-PR") \
EM(netfs_sreq_trace_cache_write, "CA-WR") \
EM(netfs_sreq_trace_cancel, "CANCL") \
EM(netfs_sreq_trace_clear, "CLEAR") \
EM(netfs_sreq_trace_consumed, "CONSM") \
EM(netfs_sreq_trace_discard, "DSCRD") \
EM(netfs_sreq_trace_donate_to_prev, "DON-P") \
EM(netfs_sreq_trace_donate_to_next, "DON-N") \
EM(netfs_sreq_trace_download_instead, "RDOWN") \
EM(netfs_sreq_trace_fail, "FAIL ") \
EM(netfs_sreq_trace_free, "FREE ") \
EM(netfs_sreq_trace_hit_eof, "EOF ") \
EM(netfs_sreq_trace_io_bad, "I-BAD") \
EM(netfs_sreq_trace_io_malformed, "I-MLF") \
EM(netfs_sreq_trace_io_unknown, "I-UNK") \
EM(netfs_sreq_trace_io_progress, "I-OK ") \
EM(netfs_sreq_trace_io_req_submitted, "I-RSB") \
EM(netfs_sreq_trace_io_retry_needed, "I-RTR") \
EM(netfs_sreq_trace_limited, "LIMIT") \
EM(netfs_sreq_trace_need_clear, "N-CLR") \
EM(netfs_sreq_trace_partial_read, "PARTR") \
EM(netfs_sreq_trace_need_retry, "ND-RT") \
EM(netfs_sreq_trace_prepare, "PREP ") \
EM(netfs_sreq_trace_prep_failed, "PRPFL") \
EM(netfs_sreq_trace_progress, "PRGRS") \
EM(netfs_sreq_trace_reprep_failed, "REPFL") \
EM(netfs_sreq_trace_retry, "RETRY") \
EM(netfs_sreq_trace_short, "SHORT") \
EM(netfs_sreq_trace_split, "SPLIT") \
EM(netfs_sreq_trace_submit, "SUBMT") \
EM(netfs_sreq_trace_superfluous, "SPRFL") \
EM(netfs_sreq_trace_terminated, "TERM ") \
EM(netfs_sreq_trace_wait_for, "_WAIT") \
EM(netfs_sreq_trace_write, "WRITE") \
EM(netfs_sreq_trace_write_skip, "SKIP ") \
E_(netfs_sreq_trace_write_term, "WTERM")
#define netfs_failures \
EM(netfs_fail_check_write_begin, "check-write-begin") \
EM(netfs_fail_copy_to_cache, "copy-to-cache") \
EM(netfs_fail_dio_read_short, "dio-read-short") \
EM(netfs_fail_dio_read_zero, "dio-read-zero") \
EM(netfs_fail_read, "read") \
EM(netfs_fail_short_read, "short-read") \
EM(netfs_fail_prepare_write, "prep-write") \
E_(netfs_fail_write, "write")
#define netfs_rreq_ref_traces \
EM(netfs_rreq_trace_get_for_outstanding,"GET OUTSTND") \
EM(netfs_rreq_trace_get_subreq, "GET SUBREQ ") \
EM(netfs_rreq_trace_put_complete, "PUT COMPLT ") \
EM(netfs_rreq_trace_put_discard, "PUT DISCARD") \
EM(netfs_rreq_trace_put_failed, "PUT FAILED ") \
EM(netfs_rreq_trace_put_no_submit, "PUT NO-SUBM") \
EM(netfs_rreq_trace_put_return, "PUT RETURN ") \
EM(netfs_rreq_trace_put_subreq, "PUT SUBREQ ") \
EM(netfs_rreq_trace_put_work_ip, "PUT WORK IP ") \
EM(netfs_rreq_trace_see_work, "SEE WORK ") \
EM(netfs_rreq_trace_see_work_complete, "SEE WORK CP") \
E_(netfs_rreq_trace_new, "NEW ")
#define netfs_sreq_ref_traces \
EM(netfs_sreq_trace_get_copy_to_cache, "GET COPY2C ") \
EM(netfs_sreq_trace_get_resubmit, "GET RESUBMT") \
EM(netfs_sreq_trace_get_submit, "GET SUBMIT ") \
EM(netfs_sreq_trace_get_short_read, "GET SHORTRD") \
EM(netfs_sreq_trace_new, "NEW ") \
EM(netfs_sreq_trace_put_abandon, "PUT ABANDON") \
EM(netfs_sreq_trace_put_cancel, "PUT CANCEL ") \
EM(netfs_sreq_trace_put_clear, "PUT CLEAR ") \
EM(netfs_sreq_trace_put_consumed, "PUT CONSUME") \
EM(netfs_sreq_trace_put_done, "PUT DONE ") \
EM(netfs_sreq_trace_put_failed, "PUT FAILED ") \
EM(netfs_sreq_trace_put_merged, "PUT MERGED ") \
EM(netfs_sreq_trace_put_no_copy, "PUT NO COPY") \
EM(netfs_sreq_trace_put_oom, "PUT OOM ") \
EM(netfs_sreq_trace_put_wip, "PUT WIP ") \
EM(netfs_sreq_trace_put_work, "PUT WORK ") \
E_(netfs_sreq_trace_put_terminated, "PUT TERM ")
#define netfs_folio_traces \
EM(netfs_folio_is_uptodate, "mod-uptodate") \
EM(netfs_just_prefetch, "mod-prefetch") \
EM(netfs_whole_folio_modify, "mod-whole-f") \
EM(netfs_modify_and_clear, "mod-n-clear") \
EM(netfs_streaming_write, "mod-streamw") \
EM(netfs_streaming_write_cont, "mod-streamw+") \
EM(netfs_flush_content, "flush") \
EM(netfs_streaming_filled_page, "mod-streamw-f") \
EM(netfs_streaming_cont_filled_page, "mod-streamw-f+") \
EM(netfs_folio_trace_abandon, "abandon") \
EM(netfs_folio_trace_alloc_buffer, "alloc-buf") \
EM(netfs_folio_trace_cancel_copy, "cancel-copy") \
EM(netfs_folio_trace_cancel_store, "cancel-store") \
EM(netfs_folio_trace_clear, "clear") \
EM(netfs_folio_trace_clear_cc, "clear-cc") \
EM(netfs_folio_trace_clear_g, "clear-g") \
EM(netfs_folio_trace_clear_s, "clear-s") \
EM(netfs_folio_trace_copy_to_cache, "mark-copy") \
EM(netfs_folio_trace_end_copy, "end-copy") \
EM(netfs_folio_trace_filled_gaps, "filled-gaps") \
EM(netfs_folio_trace_kill, "kill") \
EM(netfs_folio_trace_kill_cc, "kill-cc") \
EM(netfs_folio_trace_kill_g, "kill-g") \
EM(netfs_folio_trace_kill_s, "kill-s") \
EM(netfs_folio_trace_mkwrite, "mkwrite") \
EM(netfs_folio_trace_mkwrite_plus, "mkwrite+") \
EM(netfs_folio_trace_not_under_wback, "!wback") \
EM(netfs_folio_trace_not_locked, "!locked") \
EM(netfs_folio_trace_put, "put") \
EM(netfs_folio_trace_read, "read") \
EM(netfs_folio_trace_read_done, "read-done") \
EM(netfs_folio_trace_read_gaps, "read-gaps") \
EM(netfs_folio_trace_read_unlock, "read-unlock") \
EM(netfs_folio_trace_redirtied, "redirtied") \
EM(netfs_folio_trace_store, "store") \
EM(netfs_folio_trace_store_copy, "store-copy") \
EM(netfs_folio_trace_store_plus, "store+") \
EM(netfs_folio_trace_wthru, "wthru") \
E_(netfs_folio_trace_wthru_plus, "wthru+")
#define netfs_collect_contig_traces \
EM(netfs_contig_trace_collect, "Collect") \
EM(netfs_contig_trace_jump, "-->JUMP-->") \
E_(netfs_contig_trace_unlock, "Unlock")
#define netfs_donate_traces \
EM(netfs_trace_donate_tail_to_prev, "tail-to-prev") \
EM(netfs_trace_donate_to_prev, "to-prev") \
EM(netfs_trace_donate_to_next, "to-next") \
E_(netfs_trace_donate_to_deferred_next, "defer-next")
#define netfs_folioq_traces \
EM(netfs_trace_folioq_alloc_buffer, "alloc-buf") \
EM(netfs_trace_folioq_clear, "clear") \
EM(netfs_trace_folioq_delete, "delete") \
EM(netfs_trace_folioq_make_space, "make-space") \
EM(netfs_trace_folioq_rollbuf_init, "roll-init") \
E_(netfs_trace_folioq_read_progress, "r-progress")
#ifndef __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY
#define __NETFS_DECLARE_TRACE_ENUMS_ONCE_ONLY
#undef EM
#undef E_
#define EM(a, b) a,
#define E_(a, b) a
enum netfs_read_trace { netfs_read_traces } __mode(byte);
enum netfs_write_trace { netfs_write_traces } __mode(byte);
enum netfs_rreq_trace { netfs_rreq_traces } __mode(byte);
enum netfs_sreq_trace { netfs_sreq_traces } __mode(byte);
enum netfs_failure { netfs_failures } __mode(byte);
enum netfs_rreq_ref_trace { netfs_rreq_ref_traces } __mode(byte);
enum netfs_sreq_ref_trace { netfs_sreq_ref_traces } __mode(byte);
enum netfs_folio_trace { netfs_folio_traces } __mode(byte);
enum netfs_collect_contig_trace { netfs_collect_contig_traces } __mode(byte);
enum netfs_donate_trace { netfs_donate_traces } __mode(byte);
enum netfs_folioq_trace { netfs_folioq_traces } __mode(byte);
#endif
/*
* Export enum symbols via userspace.
*/
#undef EM
#undef E_
#define EM(a, b) TRACE_DEFINE_ENUM(a);
#define E_(a, b) TRACE_DEFINE_ENUM(a);
netfs_read_traces;
netfs_write_traces;
netfs_rreq_origins;
netfs_rreq_traces;
netfs_sreq_sources;
netfs_sreq_traces;
netfs_failures;
netfs_rreq_ref_traces;
netfs_sreq_ref_traces;
netfs_folio_traces;
netfs_collect_contig_traces;
netfs_donate_traces;
netfs_folioq_traces;
/*
* Now redefine the EM() and E_() macros to map the enums to the strings that
* will be printed in the output.
*/
#undef EM
#undef E_
#define EM(a, b) { a, b },
#define E_(a, b) { a, b }
TRACE_EVENT(netfs_read,
TP_PROTO(struct netfs_io_request *rreq,
loff_t start, size_t len,
enum netfs_read_trace what),
TP_ARGS(rreq, start, len, what),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(unsigned int, cookie)
__field(loff_t, i_size)
__field(loff_t, start)
__field(size_t, len)
__field(enum netfs_read_trace, what)
__field(unsigned int, netfs_inode)
),
TP_fast_assign(
__entry->rreq = rreq->debug_id;
__entry->cookie = rreq->cache_resources.debug_id;
__entry->i_size = rreq->i_size;
__entry->start = start;
__entry->len = len;
__entry->what = what;
__entry->netfs_inode = rreq->inode->i_ino;
),
TP_printk("R=%08x %s c=%08x ni=%x s=%llx l=%zx sz=%llx",
__entry->rreq,
__print_symbolic(__entry->what, netfs_read_traces),
__entry->cookie,
__entry->netfs_inode,
__entry->start, __entry->len, __entry->i_size)
);
TRACE_EVENT(netfs_rreq,
TP_PROTO(struct netfs_io_request *rreq,
enum netfs_rreq_trace what),
TP_ARGS(rreq, what),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(unsigned int, flags)
__field(enum netfs_io_origin, origin)
__field(enum netfs_rreq_trace, what)
),
TP_fast_assign(
__entry->rreq = rreq->debug_id;
__entry->flags = rreq->flags;
__entry->origin = rreq->origin;
__entry->what = what;
),
TP_printk("R=%08x %s %s f=%02x",
__entry->rreq,
__print_symbolic(__entry->origin, netfs_rreq_origins),
__print_symbolic(__entry->what, netfs_rreq_traces),
__entry->flags)
);
TRACE_EVENT(netfs_sreq,
TP_PROTO(struct netfs_io_subrequest *sreq,
enum netfs_sreq_trace what),
TP_ARGS(sreq, what),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(unsigned short, index)
__field(short, error)
__field(unsigned short, flags)
__field(enum netfs_io_source, source)
__field(enum netfs_sreq_trace, what)
__field(u8, slot)
__field(size_t, len)
__field(size_t, transferred)
__field(loff_t, start)
),
TP_fast_assign(
__entry->rreq = sreq->rreq->debug_id;
__entry->index = sreq->debug_index;
__entry->error = sreq->error;
__entry->flags = sreq->flags;
__entry->source = sreq->source;
__entry->what = what;
__entry->len = sreq->len;
__entry->transferred = sreq->transferred;
__entry->start = sreq->start;
__entry->slot = sreq->io_iter.folioq_slot;
),
TP_printk("R=%08x[%x] %s %s f=%03x s=%llx %zx/%zx s=%u e=%d",
__entry->rreq, __entry->index,
__print_symbolic(__entry->source, netfs_sreq_sources),
__print_symbolic(__entry->what, netfs_sreq_traces),
__entry->flags,
__entry->start, __entry->transferred, __entry->len,
__entry->slot, __entry->error)
);
TRACE_EVENT(netfs_failure,
TP_PROTO(struct netfs_io_request *rreq,
struct netfs_io_subrequest *sreq,
int error, enum netfs_failure what),
TP_ARGS(rreq, sreq, error, what),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(short, index)
__field(short, error)
__field(unsigned short, flags)
__field(enum netfs_io_source, source)
__field(enum netfs_failure, what)
__field(size_t, len)
__field(size_t, transferred)
__field(loff_t, start)
),
TP_fast_assign(
__entry->rreq = rreq->debug_id;
__entry->index = sreq ? sreq->debug_index : -1;
__entry->error = error;
__entry->flags = sreq ? sreq->flags : 0;
__entry->source = sreq ? sreq->source : NETFS_INVALID_READ;
__entry->what = what;
__entry->len = sreq ? sreq->len : rreq->len;
__entry->transferred = sreq ? sreq->transferred : 0;
__entry->start = sreq ? sreq->start : 0;
),
TP_printk("R=%08x[%x] %s f=%02x s=%llx %zx/%zx %s e=%d",
__entry->rreq, __entry->index,
__print_symbolic(__entry->source, netfs_sreq_sources),
__entry->flags,
__entry->start, __entry->transferred, __entry->len,
__print_symbolic(__entry->what, netfs_failures),
__entry->error)
);
TRACE_EVENT(netfs_rreq_ref,
TP_PROTO(unsigned int rreq_debug_id, int ref,
enum netfs_rreq_ref_trace what),
TP_ARGS(rreq_debug_id, ref, what),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(int, ref)
__field(enum netfs_rreq_ref_trace, what)
),
TP_fast_assign(
__entry->rreq = rreq_debug_id;
__entry->ref = ref;
__entry->what = what;
),
TP_printk("R=%08x %s r=%u",
__entry->rreq,
__print_symbolic(__entry->what, netfs_rreq_ref_traces),
__entry->ref)
);
TRACE_EVENT(netfs_sreq_ref,
TP_PROTO(unsigned int rreq_debug_id, unsigned int subreq_debug_index,
int ref, enum netfs_sreq_ref_trace what),
TP_ARGS(rreq_debug_id, subreq_debug_index, ref, what),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(unsigned int, subreq)
__field(int, ref)
__field(enum netfs_sreq_ref_trace, what)
),
TP_fast_assign(
__entry->rreq = rreq_debug_id;
__entry->subreq = subreq_debug_index;
__entry->ref = ref;
__entry->what = what;
),
TP_printk("R=%08x[%x] %s r=%u",
__entry->rreq,
__entry->subreq,
__print_symbolic(__entry->what, netfs_sreq_ref_traces),
__entry->ref)
);
TRACE_EVENT(netfs_folio,
TP_PROTO(struct folio *folio, enum netfs_folio_trace why),
TP_ARGS(folio, why),
TP_STRUCT__entry(
__field(ino_t, ino)
__field(pgoff_t, index)
__field(unsigned int, nr)
__field(enum netfs_folio_trace, why)
),
TP_fast_assign(
struct address_space *__m = READ_ONCE(folio->mapping);
__entry->ino = __m ? __m->host->i_ino : 0;
__entry->why = why;
__entry->index = folio->index;
__entry->nr = folio_nr_pages(folio);
),
TP_printk("i=%05lx ix=%05lx-%05lx %s",
__entry->ino, __entry->index, __entry->index + __entry->nr - 1,
__print_symbolic(__entry->why, netfs_folio_traces))
);
TRACE_EVENT(netfs_write_iter,
TP_PROTO(const struct kiocb *iocb, const struct iov_iter *from),
TP_ARGS(iocb, from),
TP_STRUCT__entry(
__field(unsigned long long, start)
__field(size_t, len)
__field(unsigned int, flags)
__field(unsigned int, ino)
),
TP_fast_assign(
__entry->start = iocb->ki_pos;
__entry->len = iov_iter_count(from);
__entry->ino = iocb->ki_filp->f_inode->i_ino;
__entry->flags = iocb->ki_flags;
),
TP_printk("WRITE-ITER i=%x s=%llx l=%zx f=%x",
__entry->ino, __entry->start, __entry->len, __entry->flags)
);
TRACE_EVENT(netfs_write,
TP_PROTO(const struct netfs_io_request *wreq,
enum netfs_write_trace what),
TP_ARGS(wreq, what),
TP_STRUCT__entry(
__field(unsigned int, wreq)
__field(unsigned int, cookie)
__field(unsigned int, ino)
__field(enum netfs_write_trace, what)
__field(unsigned long long, start)
__field(unsigned long long, len)
),
TP_fast_assign(
struct netfs_inode *__ctx = netfs_inode(wreq->inode);
struct fscache_cookie *__cookie = netfs_i_cookie(__ctx);
__entry->wreq = wreq->debug_id;
__entry->cookie = __cookie ? __cookie->debug_id : 0;
__entry->ino = wreq->inode->i_ino;
__entry->what = what;
__entry->start = wreq->start;
__entry->len = wreq->len;
),
TP_printk("R=%08x %s c=%08x i=%x by=%llx-%llx",
__entry->wreq,
__print_symbolic(__entry->what, netfs_write_traces),
__entry->cookie,
__entry->ino,
__entry->start, __entry->start + __entry->len - 1)
);
TRACE_EVENT(netfs_copy2cache,
TP_PROTO(const struct netfs_io_request *rreq,
const struct netfs_io_request *creq),
TP_ARGS(rreq, creq),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(unsigned int, creq)
__field(unsigned int, cookie)
__field(unsigned int, ino)
),
TP_fast_assign(
struct netfs_inode *__ctx = netfs_inode(rreq->inode);
struct fscache_cookie *__cookie = netfs_i_cookie(__ctx);
__entry->rreq = rreq->debug_id;
__entry->creq = creq->debug_id;
__entry->cookie = __cookie ? __cookie->debug_id : 0;
__entry->ino = rreq->inode->i_ino;
),
TP_printk("R=%08x CR=%08x c=%08x i=%x ",
__entry->rreq,
__entry->creq,
__entry->cookie,
__entry->ino)
);
TRACE_EVENT(netfs_collect,
TP_PROTO(const struct netfs_io_request *wreq),
TP_ARGS(wreq),
TP_STRUCT__entry(
__field(unsigned int, wreq)
__field(unsigned int, len)
__field(unsigned long long, transferred)
__field(unsigned long long, start)
),
TP_fast_assign(
__entry->wreq = wreq->debug_id;
__entry->start = wreq->start;
__entry->len = wreq->len;
__entry->transferred = wreq->transferred;
),
TP_printk("R=%08x s=%llx-%llx",
__entry->wreq,
__entry->start + __entry->transferred,
__entry->start + __entry->len)
);
TRACE_EVENT(netfs_collect_sreq,
TP_PROTO(const struct netfs_io_request *wreq,
const struct netfs_io_subrequest *subreq),
TP_ARGS(wreq, subreq),
TP_STRUCT__entry(
__field(unsigned int, wreq)
__field(unsigned int, subreq)
__field(unsigned int, stream)
__field(unsigned int, len)
__field(unsigned int, transferred)
__field(unsigned long long, start)
),
TP_fast_assign(
__entry->wreq = wreq->debug_id;
__entry->subreq = subreq->debug_index;
__entry->stream = subreq->stream_nr;
__entry->start = subreq->start;
__entry->len = subreq->len;
__entry->transferred = subreq->transferred;
),
TP_printk("R=%08x[%u:%02x] s=%llx t=%x/%x",
__entry->wreq, __entry->stream, __entry->subreq,
__entry->start, __entry->transferred, __entry->len)
);
TRACE_EVENT(netfs_collect_folio,
TP_PROTO(const struct netfs_io_request *wreq,
const struct folio *folio,
unsigned long long fend,
unsigned long long collected_to),
TP_ARGS(wreq, folio, fend, collected_to),
TP_STRUCT__entry(
__field(unsigned int, wreq)
__field(unsigned long, index)
__field(unsigned long long, fend)
__field(unsigned long long, cleaned_to)
__field(unsigned long long, collected_to)
),
TP_fast_assign(
__entry->wreq = wreq->debug_id;
__entry->index = folio->index;
__entry->fend = fend;
__entry->cleaned_to = wreq->cleaned_to;
__entry->collected_to = collected_to;
),
TP_printk("R=%08x ix=%05lx r=%llx-%llx t=%llx/%llx",
__entry->wreq, __entry->index,
(unsigned long long)__entry->index * PAGE_SIZE, __entry->fend,
__entry->cleaned_to, __entry->collected_to)
);
TRACE_EVENT(netfs_collect_state,
TP_PROTO(const struct netfs_io_request *wreq,
unsigned long long collected_to,
unsigned int notes),
TP_ARGS(wreq, collected_to, notes),
TP_STRUCT__entry(
__field(unsigned int, wreq)
__field(unsigned int, notes)
__field(unsigned long long, collected_to)
__field(unsigned long long, cleaned_to)
),
TP_fast_assign(
__entry->wreq = wreq->debug_id;
__entry->notes = notes;
__entry->collected_to = collected_to;
__entry->cleaned_to = wreq->cleaned_to;
),
TP_printk("R=%08x col=%llx cln=%llx n=%x",
__entry->wreq, __entry->collected_to,
__entry->cleaned_to,
__entry->notes)
);
TRACE_EVENT(netfs_collect_gap,
TP_PROTO(const struct netfs_io_request *wreq,
const struct netfs_io_stream *stream,
unsigned long long jump_to, char type),
TP_ARGS(wreq, stream, jump_to, type),
TP_STRUCT__entry(
__field(unsigned int, wreq)
__field(unsigned char, stream)
__field(unsigned char, type)
__field(unsigned long long, from)
__field(unsigned long long, to)
),
TP_fast_assign(
__entry->wreq = wreq->debug_id;
__entry->stream = stream->stream_nr;
__entry->from = stream->collected_to;
__entry->to = jump_to;
__entry->type = type;
),
TP_printk("R=%08x[%x:] %llx->%llx %c",
__entry->wreq, __entry->stream,
__entry->from, __entry->to, __entry->type)
);
TRACE_EVENT(netfs_collect_stream,
TP_PROTO(const struct netfs_io_request *wreq,
const struct netfs_io_stream *stream),
TP_ARGS(wreq, stream),
TP_STRUCT__entry(
__field(unsigned int, wreq)
__field(unsigned char, stream)
__field(unsigned long long, collected_to)
__field(unsigned long long, front)
),
TP_fast_assign(
__entry->wreq = wreq->debug_id;
__entry->stream = stream->stream_nr;
__entry->collected_to = stream->collected_to;
__entry->front = stream->front ? stream->front->start : UINT_MAX;
),
TP_printk("R=%08x[%x:] cto=%llx frn=%llx",
__entry->wreq, __entry->stream,
__entry->collected_to, __entry->front)
);
TRACE_EVENT(netfs_folioq,
TP_PROTO(const struct folio_queue *fq,
enum netfs_folioq_trace trace),
TP_ARGS(fq, trace),
TP_STRUCT__entry(
__field(unsigned int, rreq)
__field(unsigned int, id)
__field(enum netfs_folioq_trace, trace)
),
TP_fast_assign(
__entry->rreq = fq ? fq->rreq_id : 0;
__entry->id = fq ? fq->debug_id : 0;
__entry->trace = trace;
),
TP_printk("R=%08x fq=%x %s",
__entry->rreq, __entry->id,
__print_symbolic(__entry->trace, netfs_folioq_traces))
);
#undef EM
#undef E_
#endif /* _TRACE_NETFS_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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