kernel.git/tools/testing/cxl/test/mem.c, branch linux-6.4.y

tools/testing/cxl: Fix command effects for inject/clear poison

2023-07-19T14:36:23Z

[ Upstream commit b46c5fa57cc60692412f616ac66ab624a941fdb3 ] The CXL spec (3.0, section 8.2.9.8.4) Lists Inject Poison and Clear Poison as having the effects of "Immediate Data Change". Fix this in the mock driver so that the command effect log is populated correctly. Fixes: 371c16101ee8 ("tools/testing/cxl: Mock the Inject Poison mailbox command") Cc: Alison Schofield Cc: Dan Williams Reviewed-by: Alison Schofield Reviewed-by: Jonathan Cameron Reviewed-by: Dave Jiang Signed-off-by: Vishal Verma Link: https://lore.kernel.org/r/20230602-vv-fw_update-v4-2-c6265bd7343b@intel.com Signed-off-by: Dan Williams Signed-off-by: Sasha Levin

cxl: Move cxl_await_media_ready() to before capacity info retrieval

2023-05-18T23:43:45Z

Move cxl_await_media_ready() to cxl_pci probe before driver starts issuing IDENTIFY and retrieving memory device information to ensure that the device is ready to provide the information. Allow cxl_pci_probe() to succeed even if media is not ready. Cache the media failure in cxlds and don't ask the device for any media information. The rationale for proceeding in the !media_ready case is to allow for mailbox operations to interrogate and/or remediate the device. After media is repaired then rebinding the cxl_pci driver is expected to restart the capacity scan. Suggested-by: Dan Williams Fixes: b39cb1052a5c ("cxl/mem: Register CXL memX devices") Reviewed-by: Ira Weiny Signed-off-by: Dave Jiang Link: https://lore.kernel.org/r/168445310026.3251520.8124296540679268206.stgit@djiang5-mobl3 [djbw: fixup cxl_test] Signed-off-by: Dan Williams

cxl/test: Add mock test for set_timestamp

2023-04-24T18:31:02Z

Support the command testing in a unit-test fashion. Reviewed-by: Ira Weiny Signed-off-by: Davidlohr Bueso Link: https://lore.kernel.org/r/20230423221231.6357-1-dave@stgolabs.net Signed-off-by: Dan Williams

tools/testing/cxl: Add a sysfs attr to test poison inject limits

2023-04-23T19:08:39Z

CXL devices may report a maximum number of addresses that a device allows to be poisoned using poison injection. When cxl_test creates mock CXL memory devices, it defaults to MOCK_INJECT_DEV_MAX==88 for all mocked memdevs. Add a sysfs attribute, poison_inject_max to module cxl_mock_mem so that users can set a custom device injection limit. Fail, and return -EBUSY, if the mock poison list is not empty. /sys/bus/platform/drivers/cxl_mock_mem/poison_inject_max A simple usage model is to set the attribute before running a test in order to emulate a device's poison handling. Signed-off-by: Alison Schofield Reviewed-by: Dave Jiang Link: https://lore.kernel.org/r/0f25b2862b90013545450222d2199e435c6cc11a.1681874357.git.alison.schofield@intel.com Signed-off-by: Dan Williams

tools/testing/cxl: Use injected poison for get poison list

2023-04-23T19:08:39Z

Prior to poison inject support, the mock of 'Get Poison List' returned a poison list containing a single mocked error record. Following the addition of poison inject and clear support to the mock driver, use the mock_poison_list[], rather than faking an error record. Mock_poison_list[] list tracks the actual poison inject and clear requests issued by userspace. Signed-off-by: Alison Schofield Reviewed-by: Dave Jiang Link: https://lore.kernel.org/r/0f4242c81821f4982b02cb1009c22783ef66b2f1.1681874357.git.alison.schofield@intel.com Signed-off-by: Dan Williams

tools/testing/cxl: Mock the Clear Poison mailbox command

2023-04-23T19:08:39Z

Mock the clear of poison by deleting the device:address entry from the mock_poison_list[]. Behave like a real CXL device and do not fail if the address is not in the poison list, but offer a dev_dbg() message. Signed-off-by: Alison Schofield Reviewed-by: Jonathan Cameron Reviewed-by: Dave Jiang Link: https://lore.kernel.org/r/ecf19743c6572e60971bbd078f67d520cf5bca5d.1681874357.git.alison.schofield@intel.com Signed-off-by: Dan Williams

tools/testing/cxl: Mock the Inject Poison mailbox command

2023-04-23T19:08:39Z

Mock the injection of poison by storing the device:address entries in mock_poison_list[]. Enforce a limit of 8 poison injections per memdev device and 128 total entries for the cxl_test mock driver. Introducing the mock_poison[] list here, makes it available for use in the mock of Clear Poison, and the mock of Get Poison List. Signed-off-by: Alison Schofield Reviewed-by: Dave Jiang Link: https://lore.kernel.org/r/f6b7f03541eaa8c2260d3eafadd04afe3f0d7962.1681874357.git.alison.schofield@intel.com Signed-off-by: Dan Williams

tools/testing/cxl: Mock support for Get Poison List

2023-04-23T18:46:22Z

Make mock memdevs support the Get Poison List mailbox command. Return a fake poison error record when the get poison list command is issued. This supports testing the kernel tracing and cxl list capabilities for media errors. Signed-off-by: Alison Schofield Reviewed-by: Jonathan Cameron Reviewed-by: Ira Weiny Reviewed-by: Dave Jiang Link: https://lore.kernel.org/r/14d661ce3e3a32b7d8e76b8ecc5eb88343b3d09c.1681838292.git.alison.schofield@intel.com Signed-off-by: Dan Williams

cxl/test: Simulate event log overflow

2023-01-27T00:51:08Z

Log overflow is marked by a separate trace message. Simulate a log with lots of messages and flag overflow until space is cleared. Reviewed-by: Dan Williams Reviewed-by: Jonathan Cameron Signed-off-by: Ira Weiny Link: https://lore.kernel.org/r/20221216-cxl-ev-log-v7-8-2316a5c8f7d8@intel.com Signed-off-by: Dan Williams

cxl/test: Add specific events

2023-01-27T00:51:07Z

Each type of event has different trace point outputs. Add mock General Media Event, DRAM event, and Memory Module Event records to the mock list of events returned. Reviewed-by: Dan Williams Reviewed-by: Jonathan Cameron Signed-off-by: Ira Weiny Link: https://lore.kernel.org/r/20221216-cxl-ev-log-v7-7-2316a5c8f7d8@intel.com Signed-off-by: Dan Williams