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d5869fdc18
linux/block
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Yang Shi d5869fdc18 block: introduce block_rq_error tracepoint 
Currently, rasdaemon uses the existing tracepoint block_rq_complete
and filters out non-error cases in order to capture block disk errors.

But there are a few problems with this approach:

1. Even kernel trace filter could do the filtering work, there is
   still some overhead after we enable this tracepoint.

2. The filter is merely based on errno, which does not align with kernel
   logic to check the errors for print_req_error().

3. block_rq_complete only provides dev major and minor to identify
   the block device, it is not convenient to use in user-space.

So introduce a new tracepoint block_rq_error just for the error case.
With this patch, rasdaemon could switch to block_rq_error.

Since the new tracepoint has the similar implementation with
block_rq_complete, so move the existing code from TRACE_EVENT
block_rq_complete() into new event class block_rq_completion(). Then add
event for block_rq_complete and block_rq_err respectively from the newly
created event class per the suggestion from Chaitanya Kulkarni.

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220210225222.260069-1-shy828301@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-02-11 10:00:16 -07:00
..
partitions block: remove genhd.h 2022-02-02 07:49:59 -07:00
badblocks.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
bdev.c block: deprecate autoloading based on dev_t 2022-02-02 07:49:58 -07:00
bfq-cgroup.c block, bfq: fix UAF problem in bfqg_stats_init() 2021-10-19 15:18:30 -06:00
bfq-iosched.c block: simplify ioc_lookup_icq 2021-11-29 06:41:29 -07:00
bfq-iosched.h bfq: Provide helper to generate bfqq name 2021-11-29 06:38:52 -07:00
bfq-wf2q.c block: Introduce IOPRIO_NR_LEVELS 2021-08-18 07:21:12 -06:00
bio-integrity.c block: clone crypto and integrity data in __bio_clone_fast 2022-02-04 07:43:18 -07:00
bio.c block: pass a block_device to bio_clone_fast 2022-02-04 07:43:18 -07:00
blk-cgroup-rwstat.c blk-cgroup: Fix the recursive blkg rwstat 2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT 2019-11-07 12:28:13 -07:00
blk-cgroup.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
blk-core.c block: return -ENODEV for BLK_STS_OFFLINE 2022-02-03 21:10:00 -07:00
blk-crypto-fallback.c blk-crypto: rename blk_keyslot_manager to blk_crypto_profile 2021-10-21 10:49:32 -06:00
blk-crypto-internal.h block: move struct request to blk-mq.h 2021-10-18 06:17:02 -06:00
blk-crypto-profile.c blk-crypto: remove blk_crypto_unregister() 2021-11-29 06:38:51 -07:00
blk-crypto.c block: clone crypto and integrity data in __bio_clone_fast 2022-02-04 07:43:18 -07:00
blk-flush.c block: pass a block_device and opf to bio_init 2022-02-02 07:49:59 -07:00
blk-ia-ranges.c block: fix memory leak in disk_register_independent_access_ranges 2022-01-23 09:13:09 -07:00
blk-integrity.c blk-crypto: remove blk_crypto_unregister() 2021-11-29 06:38:51 -07:00
blk-ioc.c block: drop needless assignment in set_task_ioprio() 2021-12-23 07:10:07 -07:00
blk-iocost.c iocost: Fix divide-by-zero on donation from low hweight cgroup 2021-12-14 06:58:15 -07:00
blk-iolatency.c mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h> 2021-10-18 06:17:01 -06:00
blk-ioprio.c blk-ioprio: don't set bio priority if not needed 2021-11-29 06:38:35 -07:00
blk-ioprio.h block: Introduce the ioprio rq-qos policy 2021-06-21 15:03:40 -06:00
blk-lib.c block: pass a block_device and opf to blk_next_bio 2022-02-02 07:49:59 -07:00
blk-map.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
blk-merge.c block: don't check ->rq_disk in merges 2021-11-29 06:41:29 -07:00
blk-mq-cpumap.c blk-mq: remove the calling of local_memory_node() 2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c blk-mq: check q->poll_stat in queue_poll_stat_show 2021-12-02 08:20:49 -07:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c blk-mq: run dispatch lock once in case of issuing from list 2021-12-03 14:51:29 -07:00
blk-mq-sched.h block: move blk_mq_sched_assign_ioc to blk-ioc.c 2021-11-29 06:41:29 -07:00
blk-mq-sysfs.c blk-mq: move srcu from blk_mq_hw_ctx to request_queue 2021-12-03 14:51:29 -07:00
blk-mq-tag.c sbitmap: Delete old sbitmap_queue_get_shallow() 2022-02-08 06:55:49 -07:00
blk-mq-tag.h blk-mq: Delete busy_iter_fn 2021-12-06 13:18:47 -07:00
blk-mq-virtio.c blk-mq: Fix typo in comment 2020-03-17 20:55:21 +01:00
blk-mq.c block: introduce block_rq_error tracepoint 2022-02-11 10:00:16 -07:00
blk-mq.h blk-mq: don't run might_sleep() if the operation needn't blocking 2021-12-06 09:40:42 -07:00
blk-pm.c scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume() 2021-12-22 23:38:29 -05:00
blk-pm.h block: Remove unused blk_pm_*() function definitions 2021-02-22 06:33:48 -07:00
blk-rq-qos.c rq-qos: fix missed wake-ups in rq_qos_throttle try two 2021-06-08 15:12:57 -06:00
blk-rq-qos.h block: only mark bio as tracked if it really is tracked 2021-10-18 08:50:47 -06:00
blk-settings.c block: Fix partition check for host-aware zoned block devices 2021-10-27 06:58:01 -06:00
blk-stat.c block: make queue stat accounting a reference 2021-12-14 17:23:05 -07:00
blk-stat.h block: make queue stat accounting a reference 2021-12-14 17:23:05 -07:00
blk-sysfs.c block: cleanup q->srcu 2022-01-17 07:24:45 -07:00
blk-throttle.c block: don't include blk-mq.h in blk.h 2021-11-29 06:38:44 -07:00
blk-throttle.h block: move blk-throtl fast path inline 2021-10-18 06:17:03 -06:00
blk-timeout.c block: blk-timeout: delete duplicated word 2020-07-31 16:29:47 -06:00
blk-wbt.c blk-wbt: prevent NULL pointer dereference in wb_timer_fn 2021-10-19 06:13:41 -06:00
blk-wbt.h blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled() 2021-06-21 15:03:41 -06:00
blk-zoned.c block: pass a block_device and opf to bio_init 2022-02-02 07:49:59 -07:00
blk.h block: pass a block_device and opf to blk_next_bio 2022-02-02 07:49:59 -07:00
bounce.c block: pass a block_device to bio_clone_fast 2022-02-04 07:43:18 -07:00
bsg-lib.c block: remove the gendisk argument to blk_execute_rq 2021-11-29 06:41:29 -07:00
bsg.c scsi: bsg: Fix device unregistration 2021-09-14 00:22:15 -04:00
disk-events.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
elevator.c block: remove the e argument to elevator_exit 2021-11-29 06:38:44 -07:00
elevator.h block: move elevator.h to block/ 2021-10-18 06:17:01 -06:00
fops.c block: pass a block_device and opf to bio_init 2022-02-02 07:49:59 -07:00
genhd.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
holder.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
ioctl.c block: merge disk_scan_partitions and blkdev_reread_part 2021-11-29 06:35:21 -07:00
ioprio.c for-5.17/block-2022-01-11 2022-01-12 10:26:52 -08:00
Kconfig block: deprecate autoloading based on dev_t 2022-02-02 07:49:58 -07:00
Kconfig.iosched block: only build the icq tracking code when needed 2021-12-16 10:59:02 -07:00
kyber-iosched.c block: make queue stat accounting a reference 2021-12-14 17:23:05 -07:00
Makefile block: remove blk-exec.c 2021-11-29 06:34:50 -07:00
mq-deadline.c block: fix async_depth sysfs interface for mq-deadline 2022-01-20 10:54:02 -07:00
opal_proto.h block: sed-opal: Change the check condition for regular session validity 2020-03-12 08:00:10 -06:00
sed-opal.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
t10-pi.c block: move integrity handling out of <linux/blkdev.h> 2021-10-18 06:17:02 -06:00