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Harald Freudenberger e01f18c5af s390/ap: Fix wrong APQN fill calculation ... commit 3317785a88 upstream. The upper limit of the firmware queue fill state for each APQN is reported by the hwinfo.qd field. This field shows the numbers 0-7 for 1-8 queue spaces available. But the exploiting code assumed the real boundary is stored there and thus stoppes queuing in messages one tick too early. Correct the limit calculation and thus offer a boost of 12.5% performance for high traffic on one APQN. Fixes: d4c53ae8e4 ("s390/ap: store TAPQ hwinfo in struct ap_card") Cc: stable@vger.kernel.org Reported-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2026-01-30 10:28:46 +01:00
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block	s390/dasd: Fix gendisk parent after copy pair swap	2026-01-08 10:14:14 +01:00
char	s390/sclp: Fix SCCB present check	2025-08-28 16:31:06 +02:00
cio	s390/cio: Update purge function to unregister the unused subchannels	2025-10-19 16:33:39 +02:00
crypto	s390/ap: Fix wrong APQN fill calculation	2026-01-30 10:28:46 +01:00
net	s390/ctcm: Fix double-kfree	2025-12-01 11:43:31 +01:00
scsi	scsi: s390: zfcp: Ensure synchronous unit_add	2025-06-27 11:11:37 +01:00
virtio	s390/virtio_ccw: Don't allocate/assign airqs for non-existing queues	2025-04-20 10:15:59 +02:00
Makefile	s390: remove pointless drivers-y in drivers/s390/Makefile	2019-09-16 13:21:51 +02:00