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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-22 10:12:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-22 10:12:49 -0700 |
| commit | d57ce84004a0d13ada89fbceec21539559cb72f2 (patch) | |
| tree | 7191622c6afa5b84b37269e9ce4fe537d1d15699 /drivers/s390 | |
| parent | b2d9e99622796576eb6faa236b2d1f592cc43ace (diff) | |
| parent | b97bf44f99155e57088e16974afb1f2d7b5287aa (diff) | |
Merge tag 's390-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- a couple of fixes for storage key handling relevant for debugging
- add cond_resched into potentially slow subchannels scanning loop
- fixes for PF/VF linking and to ignore stale PCI configuration request
events
* tag 's390-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pci: fix PF/VF linking on hot plug
s390/pci: re-introduce zpci_remove_device()
s390/pci: fix zpci_bus_link_virtfn()
s390/ptrace: fix storage key handling
s390/runtime_instrumentation: fix storage key handling
s390/pci: ignore stale configuration request event
s390/cio: add cond_resched() in the slow_eval_known_fn() loop
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/css.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 94edbb33d0d1..aca022239b33 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -677,6 +677,11 @@ static int slow_eval_known_fn(struct subchannel *sch, void *data) rc = css_evaluate_known_subchannel(sch, 1); if (rc == -EAGAIN) css_schedule_eval(sch->schid); + /* + * The loop might take long time for platforms with lots of + * known devices. Allow scheduling here. + */ + cond_resched(); } return 0; } |