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| author | Diana Craciun <diana.craciun@oss.nxp.com> | 2020-10-05 20:36:50 +0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-10-12 11:32:49 -0600 |
| commit | f2ba7e8c947bf38fec799fdf9122e05a6a3e8382 (patch) | |
| tree | ccd68168aeff634b5cc6ce5a7f6060ba36d48976 /drivers/vfio/fsl-mc/vfio_fsl_mc_private.h | |
| parent | 67247289688d49a610a956c23c4ff032f0281845 (diff) | |
| download | linux-stable-f2ba7e8c947bf38fec799fdf9122e05a6a3e8382.tar.gz linux-stable-f2ba7e8c947bf38fec799fdf9122e05a6a3e8382.tar.bz2 linux-stable-f2ba7e8c947bf38fec799fdf9122e05a6a3e8382.zip | |
vfio/fsl-mc: Added lock support in preparation for interrupt handling
Only the DPRC object allocates interrupts from the MSI
interrupt domain. The interrupts are managed by the DPRC in
a pool of interrupts. The access to this pool of interrupts
has to be protected with a lock.
This patch extends the current lock implementation to have a
lock per DPRC.
Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/fsl-mc/vfio_fsl_mc_private.h')
| -rw-r--r-- | drivers/vfio/fsl-mc/vfio_fsl_mc_private.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h b/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h index be60f41af30f..d47ef6215429 100644 --- a/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h +++ b/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h @@ -15,6 +15,11 @@ #define VFIO_FSL_MC_INDEX_TO_OFFSET(index) \ ((u64)(index) << VFIO_FSL_MC_OFFSET_SHIFT) +struct vfio_fsl_mc_reflck { + struct kref kref; + struct mutex lock; +}; + struct vfio_fsl_mc_region { u32 flags; u32 type; @@ -27,7 +32,7 @@ struct vfio_fsl_mc_device { struct notifier_block nb; int refcnt; struct vfio_fsl_mc_region *regions; - struct mutex driver_lock; + struct vfio_fsl_mc_reflck *reflck; }; #endif /* VFIO_FSL_MC_PRIVATE_H */ |