Messages in this thread | | | Date | Thu, 31 Aug 2023 16:20:49 -0700 | Subject | Re: [PATCH RFC v2 18/18] tools/testing/cxl: Add Dynamic Capacity events | From | Dave Jiang <> |
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On 8/28/23 22:21, Ira Weiny wrote: > OS software needs to be alerted when new extents arrive on a Dynamic > Capacity Device (DCD). On test DCDs extents are added through sysfs. > > Add events on DCD extent injection. Directly call the event irq > callback to simulate irqs to process the test extents. > > Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> --- > tools/testing/cxl/test/mem.c | 57 ++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 57 insertions(+) > > diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c > index d6041a2145c5..20364fee9df9 100644 > --- a/tools/testing/cxl/test/mem.c > +++ b/tools/testing/cxl/test/mem.c > @@ -2008,6 +2008,41 @@ static bool new_extent_valid(struct device *dev, size_t new_start, > return false; > } > > +struct dcd_event_dyn_cap dcd_event_rec_template = { > + .hdr = { > + .id = UUID_INIT(0xca95afa7, 0xf183, 0x4018, > + 0x8c, 0x2f, 0x95, 0x26, 0x8e, 0x10, 0x1a, 0x2a), > + .length = sizeof(struct dcd_event_dyn_cap), > + }, > +}; > + > +static int send_dc_event(struct mock_event_store *mes, enum dc_event type, > + u64 start, u64 length, const char *tag_str) > +{ > + struct device *dev = mes->mds->cxlds.dev; > + struct dcd_event_dyn_cap *dcd_event_rec; > + > + dcd_event_rec = devm_kzalloc(dev, sizeof(*dcd_event_rec), GFP_KERNEL); > + if (!dcd_event_rec) > + return -ENOMEM; > + > + memcpy(dcd_event_rec, &dcd_event_rec_template, sizeof(*dcd_event_rec)); > + dcd_event_rec->data.event_type = type; > + dcd_event_rec->data.extent.start_dpa = cpu_to_le64(start); > + dcd_event_rec->data.extent.length = cpu_to_le64(length); > + memcpy(dcd_event_rec->data.extent.tag, tag_str, > + min(sizeof(dcd_event_rec->data.extent.tag), > + strlen(tag_str))); > + > + mes_add_event(mes, CXL_EVENT_TYPE_DCD, > + (struct cxl_event_record_raw *)dcd_event_rec); > + > + /* Fake the irq */ > + cxl_mem_get_event_records(mes->mds, CXLDEV_EVENT_STATUS_DCD); > + > + return 0; > +} > + > /* > * Format <start>:<length>:<tag> > * > @@ -2021,6 +2056,7 @@ static ssize_t dc_inject_extent_store(struct device *dev, > const char *buf, size_t count) > { > char *start_str __free(kfree) = kstrdup(buf, GFP_KERNEL); > + struct cxl_mockmem_data *mdata = dev_get_drvdata(dev); > unsigned long long start, length; > char *len_str, *tag_str; > size_t buf_len = count; > @@ -2063,6 +2099,13 @@ static ssize_t dc_inject_extent_store(struct device *dev, > if (rc) > return rc; > > + rc = send_dc_event(&mdata->mes, DCD_ADD_CAPACITY, start, length, > + tag_str); > + if (rc) { > + dev_err(dev, "Failed to add event %d\n", rc); > + return rc; > + } > + > return count; > } > static DEVICE_ATTR_WO(dc_inject_extent); > @@ -2071,6 +2114,7 @@ static ssize_t dc_del_extent_store(struct device *dev, > struct device_attribute *attr, > const char *buf, size_t count) > { > + struct cxl_mockmem_data *mdata = dev_get_drvdata(dev); > unsigned long long start; > int rc; > > @@ -2083,6 +2127,12 @@ static ssize_t dc_del_extent_store(struct device *dev, > if (rc) > return rc; > > + rc = send_dc_event(&mdata->mes, DCD_RELEASE_CAPACITY, start, 0, ""); > + if (rc) { > + dev_err(dev, "Failed to add event %d\n", rc); > + return rc; > + } > + > return count; > } > static DEVICE_ATTR_WO(dc_del_extent); > @@ -2111,6 +2161,13 @@ static ssize_t dc_force_del_extent_store(struct device *dev, > if (rc) > return rc; > > + rc = send_dc_event(&mdata->mes, DCD_FORCED_CAPACITY_RELEASE, > + start, 0, ""); > + if (rc) { > + dev_err(dev, "Failed to add event %d\n", rc); > + return rc; > + } > + > return count; > } > static DEVICE_ATTR_WO(dc_force_del_extent); >
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