diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2023-04-07 13:31:39 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-04-12 23:18:45 +0530 |
| commit | fecae134ee10b7de69461c197450f7c05677e733 (patch) | |
| tree | c1b39c24d395ab96d8b61bd6fdab77eb23911e78 /drivers/dma/idxd/idxd.h | |
| parent | 2442b7473ad03671378d2d95651bd6bbe09a0943 (diff) | |
| download | lwn-fecae134ee10b7de69461c197450f7c05677e733.tar.gz lwn-fecae134ee10b7de69461c197450f7c05677e733.zip | |
dmaengine: idxd: add per file user counters for completion record faults
Add counters per opened file for the char device in order to keep track how
many completion record faults occurred and how many of those faults failed
the writeback by the driver after attempt to fault in the page. The
counters are managed by xarray that associates the PASID with
struct idxd_user_context.
Tested-by: Tony Zhu <tony.zhu@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20230407203143.2189681-13-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/idxd.h')
| -rw-r--r-- | drivers/dma/idxd/idxd.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 4c4baa80c731..9fb26d017285 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -127,6 +127,12 @@ struct idxd_pmu { #define IDXD_MAX_PRIORITY 0xf +enum { + COUNTER_FAULTS = 0, + COUNTER_FAULT_FAILS, + COUNTER_MAX +}; + enum idxd_wq_state { IDXD_WQ_DISABLED = 0, IDXD_WQ_ENABLED, @@ -713,6 +719,7 @@ int idxd_wq_add_cdev(struct idxd_wq *wq); void idxd_wq_del_cdev(struct idxd_wq *wq); int idxd_copy_cr(struct idxd_wq *wq, ioasid_t pasid, unsigned long addr, void *buf, int len); +void idxd_user_counter_increment(struct idxd_wq *wq, u32 pasid, int index); /* perfmon */ #if IS_ENABLED(CONFIG_INTEL_IDXD_PERFMON) |