Hi, Changelog v2 ------------ - Rebase on top of v5.11-rc3 - Rebase on top of John's patch "scsi: libsas and users: Remove notifier indirection", as it affects every other patch. Include it in this series (patch #2). - Introduce patches #13 => #19, which modify call sites back to use the original libsas notifier function names without _gfp() suffix. - Collect r-b tags v1 Submission ------------- https://lkml.kernel.org/r/20201218204354.586951-1-a.darwish@xxxxxxxxxxxxx Cover letter ------------ In the discussion about preempt count consistency across kernel configurations: https://lkml.kernel.org/r/20200914204209.256266093@xxxxxxxxxxxxx it was concluded that the usage of in_interrupt() and related context checks should be removed from non-core code. This includes memory allocation mode decisions (GFP_*). In the long run, usage of in_interrupt() and its siblings should be banned from driver code completely. This series addresses SCSI libsas. Basically, the function: => drivers/scsi/libsas/sas_init.c: struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy) { ... gfp_t flags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; event = kmem_cache_zalloc(sas_event_cache, flags); ... } is transformed so that callers explicitly pass the gfp_t memory allocation flags. Affected libsas clients are modified accordingly. Patches #1, #2 => #7 have "Fixes: " tags and address bugs the were noticed during the context analysis. Thanks! 8<-------------- Ahmed S. Darwish (18): Documentation: scsi: libsas: Remove notify_ha_event() scsi: libsas: Introduce a _gfp() variant of event notifiers scsi: mvsas: Pass gfp_t flags to libsas event notifiers scsi: isci: port: link down: Pass gfp_t flags scsi: isci: port: link up: Pass gfp_t flags scsi: isci: port: broadcast change: Pass gfp_t flags scsi: libsas: Pass gfp_t flags to event notifiers scsi: pm80xx: Pass gfp_t flags to libsas event notifiers scsi: aic94xx: Pass gfp_t flags to libsas event notifiers scsi: hisi_sas: Pass gfp_t flags to libsas event notifiers scsi: libsas: event notifiers API: Add gfp_t flags parameter scsi: hisi_sas: Switch back to original libsas event notifiers scsi: aic94xx: Switch back to original libsas event notifiers scsi: pm80xx: Switch back to original libsas event notifiers scsi: libsas: Switch back to original event notifiers API scsi: isci: Switch back to original libsas event notifiers scsi: mvsas: Switch back to original libsas event notifiers scsi: libsas: Remove temporarily-added _gfp() API variants John Garry (1): scsi: libsas and users: Remove notifier indirection Documentation/scsi/libsas.rst | 5 ++-- drivers/scsi/aic94xx/aic94xx_scb.c | 20 ++++++------- drivers/scsi/hisi_sas/hisi_sas.h | 3 +- drivers/scsi/hisi_sas/hisi_sas_main.c | 29 +++++++++---------- drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 6 ++-- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 6 ++-- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 6 ++-- drivers/scsi/isci/port.c | 11 +++---- drivers/scsi/libsas/sas_event.c | 27 ++++++++--------- drivers/scsi/libsas/sas_init.c | 17 ++++------- drivers/scsi/libsas/sas_internal.h | 5 ++-- drivers/scsi/mvsas/mv_sas.c | 24 +++++++--------- drivers/scsi/pm8001/pm8001_hwi.c | 40 ++++++++++++-------------- drivers/scsi/pm8001/pm8001_sas.c | 12 +++----- drivers/scsi/pm8001/pm80xx_hwi.c | 37 +++++++++++------------- include/scsi/libsas.h | 9 +++--- 16 files changed, 115 insertions(+), 142 deletions(-) base-commit: 7c53f6b671f4aba70ff15e1b05148b10d58c2837 -- 2.30.0
