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for-5.4/block-2019-09-16

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Merge tag 'for-5.4/block-2019-09-16' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - Two NVMe pull requests:
     - ana log parse fix from Anton
     - nvme quirks support for Apple devices from Ben
     - fix missing bio completion tracing for multipath stack devices
       from Hannes and Mikhail
     - IP TOS settings for nvme rdma and tcp transports from Israel
     - rq_dma_dir cleanups from Israel
     - tracing for Get LBA Status command from Minwoo
     - Some nvme-tcp cleanups from Minwoo, Potnuri and Myself
     - Some consolidation between the fabrics transports for handling
       the CAP register
     - reset race with ns scanning fix for fabrics (move fabrics
       commands to a dedicated request queue with a different lifetime
       from the admin request queue)."
     - controller reset and namespace scan races fixes
     - nvme discovery log change uevent support
     - naming improvements from Keith
     - multiple discovery controllers reject fix from James
     - some regular cleanups from various people

 - Series fixing (and re-fixing) null_blk debug printing and nr_devices
   checks (André)

 - A few pull requests from Song, with fixes from Andy, Guoqing,
   Guilherme, Neil, Nigel, and Yufen.

 - REQ_OP_ZONE_RESET_ALL support (Chaitanya)

 - Bio merge handling unification (Christoph)

 - Pick default elevator correctly for devices with special needs
   (Damien)

 - Block stats fixes (Hou)

 - Timeout and support devices nbd fixes (Mike)

 - Series fixing races around elevator switching and device add/remove
   (Ming)

 - sed-opal cleanups (Revanth)

 - Per device weight support for BFQ (Fam)

 - Support for blk-iocost, a new model that can properly account cost of
   IO workloads. (Tejun)

 - blk-cgroup writeback fixes (Tejun)

 - paride queue init fixes (zhengbin)

 - blk_set_runtime_active() cleanup (Stanley)

 - Block segment mapping optimizations (Bart)

 - lightnvm fixes (Hans/Minwoo/YueHaibing)

 - Various little fixes and cleanups

* tag 'for-5.4/block-2019-09-16' of git://git.kernel.dk/linux-block: (186 commits)
  null_blk: format pr_* logs with pr_fmt
  null_blk: match the type of parameter nr_devices
  null_blk: do not fail the module load with zero devices
  block: also check RQF_STATS in blk_mq_need_time_stamp()
  block: make rq sector size accessible for block stats
  bfq: Fix bfq linkage error
  raid5: use bio_end_sector in r5_next_bio
  raid5: remove STRIPE_OPS_REQ_PENDING
  md: add feature flag MD_FEATURE_RAID0_LAYOUT
  md/raid0: avoid RAID0 data corruption due to layout confusion.
  raid5: don't set STRIPE_HANDLE to stripe which is in batch list
  raid5: don't increment read_errors on EILSEQ return
  nvmet: fix a wrong error status returned in error log page
  nvme: send discovery log page change events to userspace
  nvme: add uevent variables for controller devices
  nvme: enable aen regardless of the presence of I/O queues
  nvme-fabrics: allow discovery subsystems accept a kato
  nvmet: Use PTR_ERR_OR_ZERO() in nvmet_init_discovery()
  nvme: Remove redundant assignment of cq vector
  nvme: Assign subsys instance from first ctrl
  ...
This commit is contained in:
Linus Torvalds 2019-09-17 16:57:47 -07:00
commit 7ad67ca553
107 changed files with 5895 additions and 1283 deletions
Download patch file Download diff file Expand all files Collapse all files

178
include/trace/events/iocost.h Normal file
View file

@ -0,0 +1,178 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iocost
struct ioc;
struct ioc_now;
struct ioc_gq;
#if !defined(_TRACE_BLK_IOCOST_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_BLK_IOCOST_H
#include <linux/tracepoint.h>
TRACE_EVENT(iocost_iocg_activate,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u64 last_period, u64 cur_period, u64 vtime),
TP_ARGS(iocg, path, now, last_period, cur_period, vtime),
TP_STRUCT__entry (
__string(devname, ioc_name(iocg->ioc))
__string(cgroup, path)
__field(u64, now)
__field(u64, vnow)
__field(u64, vrate)
__field(u64, last_period)
__field(u64, cur_period)
__field(u64, last_vtime)
__field(u64, vtime)
__field(u32, weight)
__field(u32, inuse)
__field(u64, hweight_active)
__field(u64, hweight_inuse)
),
TP_fast_assign(
__assign_str(devname, ioc_name(iocg->ioc));
__assign_str(cgroup, path);
__entry->now = now->now;
__entry->vnow = now->vnow;
__entry->vrate = now->vrate;
__entry->last_period = last_period;
__entry->cur_period = cur_period;
__entry->last_vtime = iocg->last_vtime;
__entry->vtime = vtime;
__entry->weight = iocg->weight;
__entry->inuse = iocg->inuse;
__entry->hweight_active = iocg->hweight_active;
__entry->hweight_inuse = iocg->hweight_inuse;
),
TP_printk("[%s:%s] now=%llu:%llu vrate=%llu "
"period=%llu->%llu vtime=%llu->%llu "
"weight=%u/%u hweight=%llu/%llu",
__get_str(devname), __get_str(cgroup),
__entry->now, __entry->vnow, __entry->vrate,
__entry->last_period, __entry->cur_period,
__entry->last_vtime, __entry->vtime,
__entry->inuse, __entry->weight,
__entry->hweight_inuse, __entry->hweight_active
)
);
DECLARE_EVENT_CLASS(iocg_inuse_update,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u32 old_inuse, u32 new_inuse,
u64 old_hw_inuse, u64 new_hw_inuse),
TP_ARGS(iocg, path, now, old_inuse, new_inuse,
old_hw_inuse, new_hw_inuse),
TP_STRUCT__entry (
__string(devname, ioc_name(iocg->ioc))
__string(cgroup, path)
__field(u64, now)
__field(u32, old_inuse)
__field(u32, new_inuse)
__field(u64, old_hweight_inuse)
__field(u64, new_hweight_inuse)
),
TP_fast_assign(
__assign_str(devname, ioc_name(iocg->ioc));
__assign_str(cgroup, path);
__entry->now = now->now;
__entry->old_inuse = old_inuse;
__entry->new_inuse = new_inuse;
__entry->old_hweight_inuse = old_hw_inuse;
__entry->new_hweight_inuse = new_hw_inuse;
),
TP_printk("[%s:%s] now=%llu inuse=%u->%u hw_inuse=%llu->%llu",
__get_str(devname), __get_str(cgroup), __entry->now,
__entry->old_inuse, __entry->new_inuse,
__entry->old_hweight_inuse, __entry->new_hweight_inuse
)
);
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_takeback,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u32 old_inuse, u32 new_inuse,
u64 old_hw_inuse, u64 new_hw_inuse),
TP_ARGS(iocg, path, now, old_inuse, new_inuse,
old_hw_inuse, new_hw_inuse)
);
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_giveaway,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u32 old_inuse, u32 new_inuse,
u64 old_hw_inuse, u64 new_hw_inuse),
TP_ARGS(iocg, path, now, old_inuse, new_inuse,
old_hw_inuse, new_hw_inuse)
);
DEFINE_EVENT(iocg_inuse_update, iocost_inuse_reset,
TP_PROTO(struct ioc_gq *iocg, const char *path, struct ioc_now *now,
u32 old_inuse, u32 new_inuse,
u64 old_hw_inuse, u64 new_hw_inuse),
TP_ARGS(iocg, path, now, old_inuse, new_inuse,
old_hw_inuse, new_hw_inuse)
);
TRACE_EVENT(iocost_ioc_vrate_adj,
TP_PROTO(struct ioc *ioc, u64 new_vrate, u32 (*missed_ppm)[2],
u32 rq_wait_pct, int nr_lagging, int nr_shortages,
int nr_surpluses),
TP_ARGS(ioc, new_vrate, missed_ppm, rq_wait_pct, nr_lagging, nr_shortages,
nr_surpluses),
TP_STRUCT__entry (
__string(devname, ioc_name(ioc))
__field(u64, old_vrate)
__field(u64, new_vrate)
__field(int, busy_level)
__field(u32, read_missed_ppm)
__field(u32, write_missed_ppm)
__field(u32, rq_wait_pct)
__field(int, nr_lagging)
__field(int, nr_shortages)
__field(int, nr_surpluses)
),
TP_fast_assign(
__assign_str(devname, ioc_name(ioc));
__entry->old_vrate = atomic64_read(&ioc->vtime_rate);;
__entry->new_vrate = new_vrate;
__entry->busy_level = ioc->busy_level;
__entry->read_missed_ppm = (*missed_ppm)[READ];
__entry->write_missed_ppm = (*missed_ppm)[WRITE];
__entry->rq_wait_pct = rq_wait_pct;
__entry->nr_lagging = nr_lagging;
__entry->nr_shortages = nr_shortages;
__entry->nr_surpluses = nr_surpluses;
),
TP_printk("[%s] vrate=%llu->%llu busy=%d missed_ppm=%u:%u rq_wait_pct=%u lagging=%d shortages=%d surpluses=%d",
__get_str(devname), __entry->old_vrate, __entry->new_vrate,
__entry->busy_level,
__entry->read_missed_ppm, __entry->write_missed_ppm,
__entry->rq_wait_pct, __entry->nr_lagging, __entry->nr_shortages,
__entry->nr_surpluses
)
);
#endif /* _TRACE_BLK_IOCOST_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

126
include/trace/events/writeback.h
View file

@ -176,6 +176,132 @@ static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *w
#endif /* CONFIG_CGROUP_WRITEBACK */
#endif /* CREATE_TRACE_POINTS */
#ifdef CONFIG_CGROUP_WRITEBACK
TRACE_EVENT(inode_foreign_history,
TP_PROTO(struct inode *inode, struct writeback_control *wbc,
unsigned int history),
TP_ARGS(inode, wbc, history),
TP_STRUCT__entry(
__array(char, name, 32)
__field(unsigned long, ino)
__field(unsigned int, cgroup_ino)
__field(unsigned int, history)
),
TP_fast_assign(
strncpy(__entry->name, dev_name(inode_to_bdi(inode)->dev), 32);
__entry->ino = inode->i_ino;
__entry->cgroup_ino = __trace_wbc_assign_cgroup(wbc);
__entry->history = history;
),
TP_printk("bdi %s: ino=%lu cgroup_ino=%u history=0x%x",
__entry->name,
__entry->ino,
__entry->cgroup_ino,
__entry->history
)
);
TRACE_EVENT(inode_switch_wbs,
TP_PROTO(struct inode *inode, struct bdi_writeback *old_wb,
struct bdi_writeback *new_wb),
TP_ARGS(inode, old_wb, new_wb),
TP_STRUCT__entry(
__array(char, name, 32)
__field(unsigned long, ino)
__field(unsigned int, old_cgroup_ino)
__field(unsigned int, new_cgroup_ino)
),
TP_fast_assign(
strncpy(__entry->name, dev_name(old_wb->bdi->dev), 32);
__entry->ino = inode->i_ino;
__entry->old_cgroup_ino = __trace_wb_assign_cgroup(old_wb);
__entry->new_cgroup_ino = __trace_wb_assign_cgroup(new_wb);
),
TP_printk("bdi %s: ino=%lu old_cgroup_ino=%u new_cgroup_ino=%u",
__entry->name,
__entry->ino,
__entry->old_cgroup_ino,
__entry->new_cgroup_ino
)
);
TRACE_EVENT(track_foreign_dirty,
TP_PROTO(struct page *page, struct bdi_writeback *wb),
TP_ARGS(page, wb),
TP_STRUCT__entry(
__array(char, name, 32)
__field(u64, bdi_id)
__field(unsigned long, ino)
__field(unsigned int, memcg_id)
__field(unsigned int, cgroup_ino)
__field(unsigned int, page_cgroup_ino)
),
TP_fast_assign(
struct address_space *mapping = page_mapping(page);
struct inode *inode = mapping ? mapping->host : NULL;
strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
__entry->bdi_id = wb->bdi->id;
__entry->ino = inode ? inode->i_ino : 0;
__entry->memcg_id = wb->memcg_css->id;
__entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
__entry->page_cgroup_ino = page->mem_cgroup->css.cgroup->kn->id.ino;
),
TP_printk("bdi %s[%llu]: ino=%lu memcg_id=%u cgroup_ino=%u page_cgroup_ino=%u",
__entry->name,
__entry->bdi_id,
__entry->ino,
__entry->memcg_id,
__entry->cgroup_ino,
__entry->page_cgroup_ino
)
);
TRACE_EVENT(flush_foreign,
TP_PROTO(struct bdi_writeback *wb, unsigned int frn_bdi_id,
unsigned int frn_memcg_id),
TP_ARGS(wb, frn_bdi_id, frn_memcg_id),
TP_STRUCT__entry(
__array(char, name, 32)
__field(unsigned int, cgroup_ino)
__field(unsigned int, frn_bdi_id)
__field(unsigned int, frn_memcg_id)
),
TP_fast_assign(
strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
__entry->cgroup_ino = __trace_wb_assign_cgroup(wb);
__entry->frn_bdi_id = frn_bdi_id;
__entry->frn_memcg_id = frn_memcg_id;
),
TP_printk("bdi %s: cgroup_ino=%u frn_bdi_id=%u frn_memcg_id=%u",
__entry->name,
__entry->cgroup_ino,
__entry->frn_bdi_id,
__entry->frn_memcg_id
)
);
#endif
DECLARE_EVENT_CLASS(writeback_write_inode_template,
TP_PROTO(struct inode *inode, struct writeback_control *wbc),