From patchwork Fri Mar 1 22:36:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 13579199 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0721B3B1AC; Fri, 1 Mar 2024 22:37:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332660; cv=none; b=UYawS1nKJpDUiWPzND33lNTKlVXbSjttMltW1++4bnQEnkVYIxGg5svqscQ86RbZHvtoZ7cSBfk+IiN0OnV5o3Bo7Kkc6AFCQIBYUdr2/r5GLi0305d9Mr0BVHPKNb6lj5JZvKSsEeBEPzGlfI6Z/V7rXaVJnlNXofoQF+wPSTo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332660; c=relaxed/simple; bh=/TbPAStP3I3PF0/RE6UC9NYhDYpSULt1wrfrOngDNKA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IQtVhIOXcUU9lSLJUpWZjzVVxgmLGyWQVH9ksCaL24I/M740XbUn5ILlkMW/diTWw+gMQATgvEHqvepFlQYoO9Boy1Y0P2Qn+FiIwhLFIyNCql3/M5Te2XcaqyZLpOjiqeOXCDGSVRP7UoEVvs8GArA2J4Ia/CgE54Y1Q/3VYsc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B2ECC43399; Fri, 1 Mar 2024 22:37:39 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev Cc: vishal.l.verma@intel.com, Alison Schofield Subject: [NDCTL PATCH v8 1/4] ndctl: cxl: Add QoS class retrieval for the root decoder Date: Fri, 1 Mar 2024 15:36:40 -0700 Message-ID: <20240301223736.1380778-2-dave.jiang@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240301223736.1380778-1-dave.jiang@intel.com> References: <20240301223736.1380778-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add libcxl API to retrieve the QoS class for the root decoder. Also add support to display the QoS class for the root decoder through the 'cxl list' command. The qos_class is the QTG ID of the CFMWS window that represents the root decoder. Reviewed-by: Alison Schofield Signed-off-by: Dave Jiang --- cxl/json.c | 10 ++++++++++ cxl/lib/libcxl.c | 14 ++++++++++++++ cxl/lib/libcxl.sym | 1 + cxl/lib/private.h | 1 + cxl/libcxl.h | 3 +++ 5 files changed, 29 insertions(+) diff --git a/cxl/json.c b/cxl/json.c index 6fb17582a1cb..1d380e23d6ff 100644 --- a/cxl/json.c +++ b/cxl/json.c @@ -1062,6 +1062,16 @@ struct json_object *util_cxl_decoder_to_json(struct cxl_decoder *decoder, jobj); } + if (cxl_port_is_root(port)) { + int qos_class = cxl_root_decoder_get_qos_class(decoder); + + if (qos_class != CXL_QOS_CLASS_NONE) { + jobj = json_object_new_int(qos_class); + if (jobj) + json_object_object_add(jdecoder, "qos_class", jobj); + } + } + json_object_set_userdata(jdecoder, decoder, NULL); return jdecoder; } diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 1537a33d370e..9a1ac7001803 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -2229,6 +2229,12 @@ static void *add_cxl_decoder(void *parent, int id, const char *cxldecoder_base) else decoder->interleave_ways = strtoul(buf, NULL, 0); + sprintf(path, "%s/qos_class", cxldecoder_base); + if (sysfs_read_attr(ctx, path, buf) < 0) + decoder->qos_class = CXL_QOS_CLASS_NONE; + else + decoder->qos_class = atoi(buf); + switch (port->type) { case CXL_PORT_ENDPOINT: sprintf(path, "%s/dpa_resource", cxldecoder_base); @@ -2423,6 +2429,14 @@ CXL_EXPORT unsigned long long cxl_decoder_get_size(struct cxl_decoder *decoder) return decoder->size; } +CXL_EXPORT int cxl_root_decoder_get_qos_class(struct cxl_decoder *decoder) +{ + if (!cxl_port_is_root(decoder->port)) + return -EINVAL; + + return decoder->qos_class; +} + CXL_EXPORT unsigned long long cxl_decoder_get_dpa_resource(struct cxl_decoder *decoder) { diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index 2149f84d764e..384fea2c25e3 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -282,4 +282,5 @@ global: LIBCXL_8 { global: cxl_memdev_wait_sanitize; + cxl_root_decoder_get_qos_class; } LIBCXL_7; diff --git a/cxl/lib/private.h b/cxl/lib/private.h index b26a8629e047..4847ff448f71 100644 --- a/cxl/lib/private.h +++ b/cxl/lib/private.h @@ -144,6 +144,7 @@ struct cxl_decoder { struct list_head targets; struct list_head regions; struct list_head stale_regions; + int qos_class; }; enum cxl_decode_state { diff --git a/cxl/libcxl.h b/cxl/libcxl.h index 352b3a866f63..e5c08da77f77 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -173,6 +173,8 @@ struct cxl_dport *cxl_port_get_dport_by_memdev(struct cxl_port *port, for (dport = cxl_dport_get_first(port); dport != NULL; \ dport = cxl_dport_get_next(dport)) +#define CXL_QOS_CLASS_NONE -1 + struct cxl_decoder; struct cxl_decoder *cxl_decoder_get_first(struct cxl_port *port); struct cxl_decoder *cxl_decoder_get_next(struct cxl_decoder *decoder); @@ -184,6 +186,7 @@ unsigned long long cxl_decoder_get_dpa_resource(struct cxl_decoder *decoder); unsigned long long cxl_decoder_get_dpa_size(struct cxl_decoder *decoder); unsigned long long cxl_decoder_get_max_available_extent(struct cxl_decoder *decoder); +int cxl_root_decoder_get_qos_class(struct cxl_decoder *decoder); enum cxl_decoder_mode { CXL_DECODER_MODE_NONE, From patchwork Fri Mar 1 22:36:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 13579200 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A396C3B1AC; Fri, 1 Mar 2024 22:37:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332661; cv=none; b=EgG+LI7usijqXM3z1pyo/3A6Bgf0+33HlEs7yZXenXAMCoXhsFdqjlCSDc+n95Hb9QnQ7+RLVNpO4DCJ/kN7EObg7w25CIsgFD+IWcJ1cjdN7EUFokx9lCeObRAgfhEcwUZpG3rDxgYkIRJ95IQcJqhoRjAZn7+v9JhA/eWJcc8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332661; c=relaxed/simple; bh=unEkRpKUF1V59qD835iHKgeIbxJIAwzV6fp/eI78NFU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=f7l0RIGBbWLv3t4KB+PWchQU9mx+F8XULp087gIE22piO6KKvFBbw9nzHatUzaoBj9oz6lrEaiS5rUXMkeBA6e5jT7hFOqMz+vgKzmcWn2XqYRD+m17cLTTwHkW6XKv3w0Ypu8vYa2v4yE0jZmKa6oyxf4amyaZeSTBeDS7c70M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77AE0C433F1; Fri, 1 Mar 2024 22:37:40 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev Cc: vishal.l.verma@intel.com, Alison Schofield Subject: [NDCTL PATCH v8 2/4] ndctl: cxl: Add QoS class support for the memory device Date: Fri, 1 Mar 2024 15:36:41 -0700 Message-ID: <20240301223736.1380778-3-dave.jiang@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240301223736.1380778-1-dave.jiang@intel.com> References: <20240301223736.1380778-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add libcxl API to retrieve the QoS class tokens for the memory devices. Two API calls are added. One for 'ram' or 'volatile' mode and another for 'pmem' or 'persistent' mode. Support also added for displaying the QoS class tokens through the 'cxl list' command. Reviewed-by: Alison Schofield Signed-off-by: Dave Jiang --- cxl/json.c | 15 +++++++++++++++ cxl/lib/libcxl.c | 22 ++++++++++++++++++++++ cxl/lib/libcxl.sym | 2 ++ cxl/lib/private.h | 2 ++ cxl/libcxl.h | 2 ++ 5 files changed, 43 insertions(+) diff --git a/cxl/json.c b/cxl/json.c index 1d380e23d6ff..c8bd8c27447a 100644 --- a/cxl/json.c +++ b/cxl/json.c @@ -777,6 +777,7 @@ struct json_object *util_cxl_memdev_to_json(struct cxl_memdev *memdev, struct json_object *jdev, *jobj; unsigned long long serial, size; int numa_node; + int qos_class; jdev = json_object_new_object(); if (!jdev) @@ -791,6 +792,13 @@ struct json_object *util_cxl_memdev_to_json(struct cxl_memdev *memdev, jobj = util_json_object_size(size, flags); if (jobj) json_object_object_add(jdev, "pmem_size", jobj); + + qos_class = cxl_memdev_get_pmem_qos_class(memdev); + if (qos_class != CXL_QOS_CLASS_NONE) { + jobj = json_object_new_int(qos_class); + if (jobj) + json_object_object_add(jdev, "pmem_qos_class", jobj); + } } size = cxl_memdev_get_ram_size(memdev); @@ -798,6 +806,13 @@ struct json_object *util_cxl_memdev_to_json(struct cxl_memdev *memdev, jobj = util_json_object_size(size, flags); if (jobj) json_object_object_add(jdev, "ram_size", jobj); + + qos_class = cxl_memdev_get_ram_qos_class(memdev); + if (qos_class != CXL_QOS_CLASS_NONE) { + jobj = json_object_new_int(qos_class); + if (jobj) + json_object_object_add(jdev, "ram_qos_class", jobj); + } } if (flags & UTIL_JSON_HEALTH) { diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 9a1ac7001803..6c293f1dfc91 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -1260,6 +1260,18 @@ static void *add_cxl_memdev(void *parent, int id, const char *cxlmem_base) goto err_read; memdev->ram_size = strtoull(buf, NULL, 0); + sprintf(path, "%s/pmem/qos_class", cxlmem_base); + if (sysfs_read_attr(ctx, path, buf) < 0) + memdev->pmem_qos_class = CXL_QOS_CLASS_NONE; + else + memdev->pmem_qos_class = atoi(buf); + + sprintf(path, "%s/ram/qos_class", cxlmem_base); + if (sysfs_read_attr(ctx, path, buf) < 0) + memdev->ram_qos_class = CXL_QOS_CLASS_NONE; + else + memdev->ram_qos_class = atoi(buf); + sprintf(path, "%s/payload_max", cxlmem_base); if (sysfs_read_attr(ctx, path, buf) < 0) goto err_read; @@ -1483,6 +1495,16 @@ CXL_EXPORT unsigned long long cxl_memdev_get_ram_size(struct cxl_memdev *memdev) return memdev->ram_size; } +CXL_EXPORT int cxl_memdev_get_pmem_qos_class(struct cxl_memdev *memdev) +{ + return memdev->pmem_qos_class; +} + +CXL_EXPORT int cxl_memdev_get_ram_qos_class(struct cxl_memdev *memdev) +{ + return memdev->ram_qos_class; +} + CXL_EXPORT const char *cxl_memdev_get_firmware_verison(struct cxl_memdev *memdev) { return memdev->firmware_version; diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index 384fea2c25e3..465c78dc6c70 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -283,4 +283,6 @@ LIBCXL_8 { global: cxl_memdev_wait_sanitize; cxl_root_decoder_get_qos_class; + cxl_memdev_get_pmem_qos_class; + cxl_memdev_get_ram_qos_class; } LIBCXL_7; diff --git a/cxl/lib/private.h b/cxl/lib/private.h index 4847ff448f71..07dc8c784f1d 100644 --- a/cxl/lib/private.h +++ b/cxl/lib/private.h @@ -47,6 +47,8 @@ struct cxl_memdev { struct list_node list; unsigned long long pmem_size; unsigned long long ram_size; + int ram_qos_class; + int pmem_qos_class; int payload_max; size_t lsa_size; struct kmod_module *module; diff --git a/cxl/libcxl.h b/cxl/libcxl.h index e5c08da77f77..a180f01cb05e 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -72,6 +72,8 @@ int cxl_memdev_get_minor(struct cxl_memdev *memdev); struct cxl_ctx *cxl_memdev_get_ctx(struct cxl_memdev *memdev); unsigned long long cxl_memdev_get_pmem_size(struct cxl_memdev *memdev); unsigned long long cxl_memdev_get_ram_size(struct cxl_memdev *memdev); +int cxl_memdev_get_pmem_qos_class(struct cxl_memdev *memdev); +int cxl_memdev_get_ram_qos_class(struct cxl_memdev *memdev); const char *cxl_memdev_get_firmware_verison(struct cxl_memdev *memdev); bool cxl_memdev_fw_update_in_progress(struct cxl_memdev *memdev); size_t cxl_memdev_fw_update_get_remaining(struct cxl_memdev *memdev); From patchwork Fri Mar 1 22:36:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 13579201 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 049FB3B1AC; Fri, 1 Mar 2024 22:37:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332662; cv=none; b=WPAkORUZB17xW/FmagebI5KfOWhxoVdY5yk291WRWGT+fwz6zx82g+wmkCOQW0E0eAWTjyoiYbEe+7HWDFPG2yqaiMlRAeIoH5y2XtpA6vBaP8KBRBvogX5BJZwgqZDlSVg10y0kmfpSn7DKA6hcKfSUWgSz6n9nJtT7Wcv2SLM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332662; c=relaxed/simple; bh=3oqDWvhQGCxklDLK7SXj/pwCsBilauYIVq05xmtPQjg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GVnq8+DcYAxc6f9nDtF2rTnSSu+D9pU1L8X4u6ngW4Omz7OpiDQHiDg3dGDsTMFHSz8dNKIE+pFzz/01xgak3CrWxh72G6H8QEDBG3qCvKzFY2sEMN+4pHYj8guKTiyb8/yhBpJHZvI7PsrKWILPHplBVu+1XkkP5MoL1HMJt1o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 702E8C43390; Fri, 1 Mar 2024 22:37:41 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev Cc: vishal.l.verma@intel.com, Alison Schofield Subject: [NDCTL PATCH v8 3/4] ndctl: cxl: add QoS class check for CXL region creation Date: Fri, 1 Mar 2024 15:36:42 -0700 Message-ID: <20240301223736.1380778-4-dave.jiang@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240301223736.1380778-1-dave.jiang@intel.com> References: <20240301223736.1380778-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The CFMWS provides a QTG ID. The kernel driver creates a root decoder that represents the CFMWS. A qos_class attribute is exported via sysfs for the root decoder. One or more qos_class tokens are retrieved via QTG ID _DSM from the ACPI0017 device for a CXL memory device. The input for the _DSM is the read and write latency and bandwidth for the path between the device and the CPU. The numbers are constructed by the kernel driver for the _DSM input. When a device is probed, QoS class tokens are retrieved. This is useful for a hot-plugged CXL memory device that does not have regions created. Add a QoS check during region creation. If --enforce-qos/-Q is set and the qos_class mismatches, the region creation will fail. Reviewed-by: Alison Schofield Signed-off-by: Dave Jiang --- v8: - Add qos_class comparison in libcxl instead of user set flag. (Vishal) - Move check into validate_decoder(). (Vishal) --- Documentation/cxl/cxl-create-region.txt | 6 +++ cxl/json.c | 6 +++ cxl/lib/libcxl.c | 29 ++++++++++++++ cxl/lib/libcxl.sym | 1 + cxl/libcxl.h | 1 + cxl/region.c | 53 ++++++++++++++++++++++++- 6 files changed, 95 insertions(+), 1 deletion(-) diff --git a/Documentation/cxl/cxl-create-region.txt b/Documentation/cxl/cxl-create-region.txt index f11a412bddfe..b244af60b8a6 100644 --- a/Documentation/cxl/cxl-create-region.txt +++ b/Documentation/cxl/cxl-create-region.txt @@ -105,6 +105,12 @@ include::bus-option.txt[] supplied, the first cross-host bridge (if available), decoder that supports the largest interleave will be chosen. +-Q:: +--enforce-qos:: + Parameter to enforce qos_class mismatch failure. Region create operation + will fail of the qos_class of the root decoder and one of the memdev that + backs the region mismatches. + include::human-option.txt[] include::debug-option.txt[] diff --git a/cxl/json.c b/cxl/json.c index c8bd8c27447a..b9ed62abe0e2 100644 --- a/cxl/json.c +++ b/cxl/json.c @@ -1238,6 +1238,12 @@ struct json_object *util_cxl_region_to_json(struct cxl_region *region, } } + if (!cxl_region_qos_class_matches(region)) { + jobj = json_object_new_boolean(true); + if (jobj) + json_object_object_add(jregion, "qos_class_mismatches", jobj); + } + json_object_set_userdata(jregion, region, NULL); diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 6c293f1dfc91..3ca0dca8db52 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -414,6 +414,35 @@ CXL_EXPORT int cxl_region_is_enabled(struct cxl_region *region) return is_enabled(path); } +CXL_EXPORT bool cxl_region_qos_class_matches(struct cxl_region *region) +{ + struct cxl_decoder *root_decoder = cxl_region_get_decoder(region); + struct cxl_memdev_mapping *mapping; + + cxl_mapping_foreach(region, mapping) { + struct cxl_decoder *decoder; + struct cxl_memdev *memdev; + + decoder = cxl_mapping_get_decoder(mapping); + if (!decoder) + continue; + + memdev = cxl_decoder_get_memdev(decoder); + if (!memdev) + continue; + + if (region->mode == CXL_DECODER_MODE_RAM) { + if (root_decoder->qos_class != memdev->ram_qos_class) + return false; + } else if (region->mode == CXL_DECODER_MODE_PMEM) { + if (root_decoder->qos_class != memdev->pmem_qos_class) + return false; + } + } + + return true; +} + CXL_EXPORT int cxl_region_disable(struct cxl_region *region) { const char *devname = cxl_region_get_devname(region); diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index 465c78dc6c70..a203b3ce3976 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -285,4 +285,5 @@ global: cxl_root_decoder_get_qos_class; cxl_memdev_get_pmem_qos_class; cxl_memdev_get_ram_qos_class; + cxl_region_qos_class_matches; } LIBCXL_7; diff --git a/cxl/libcxl.h b/cxl/libcxl.h index a180f01cb05e..bd8e924844ff 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -335,6 +335,7 @@ int cxl_region_clear_target(struct cxl_region *region, int position); int cxl_region_clear_all_targets(struct cxl_region *region); int cxl_region_decode_commit(struct cxl_region *region); int cxl_region_decode_reset(struct cxl_region *region); +bool cxl_region_qos_class_matches(struct cxl_region *region); #define cxl_region_foreach(decoder, region) \ for (region = cxl_region_get_first(decoder); region != NULL; \ diff --git a/cxl/region.c b/cxl/region.c index 3a762db4800e..735b3be7759b 100644 --- a/cxl/region.c +++ b/cxl/region.c @@ -32,6 +32,7 @@ static struct region_params { bool force; bool human; bool debug; + bool qos_enforce; } param = { .ways = INT_MAX, .granularity = INT_MAX, @@ -49,6 +50,7 @@ struct parsed_params { const char **argv; struct cxl_decoder *root_decoder; enum cxl_decoder_mode mode; + bool qos_enforce; }; enum region_actions { @@ -81,7 +83,8 @@ OPT_STRING('U', "uuid", ¶m.uuid, \ "region uuid", "uuid for the new region (default: autogenerate)"), \ OPT_BOOLEAN('m', "memdevs", ¶m.memdevs, \ "non-option arguments are memdevs"), \ -OPT_BOOLEAN('u', "human", ¶m.human, "use human friendly number formats") +OPT_BOOLEAN('u', "human", ¶m.human, "use human friendly number formats"), \ +OPT_BOOLEAN('Q', "enforce-qos", ¶m.qos_enforce, "enforce of qos_class matching") static const struct option create_options[] = { BASE_OPTIONS(), @@ -360,6 +363,8 @@ static int parse_create_options(struct cxl_ctx *ctx, int count, } } + p->qos_enforce = param.qos_enforce; + return 0; err: @@ -423,10 +428,52 @@ static void collect_minsize(struct cxl_ctx *ctx, struct parsed_params *p) } } +static int create_region_validate_qos_class(struct parsed_params *p) +{ + int root_qos_class; + int qos_class; + int i; + + if (!p->qos_enforce) + return 0; + + root_qos_class = cxl_root_decoder_get_qos_class(p->root_decoder); + if (root_qos_class == CXL_QOS_CLASS_NONE) + return 0; + + for (i = 0; i < p->ways; i++) { + struct json_object *jobj = + json_object_array_get_idx(p->memdevs, i); + struct cxl_memdev *memdev = json_object_get_userdata(jobj); + + if (p->mode == CXL_DECODER_MODE_RAM) + qos_class = cxl_memdev_get_ram_qos_class(memdev); + else + qos_class = cxl_memdev_get_pmem_qos_class(memdev); + + /* No qos_class entries. Possibly no kernel support */ + if (qos_class == CXL_QOS_CLASS_NONE) + break; + + if (qos_class != root_qos_class) { + if (p->qos_enforce) { + log_err(&rl, "%s QoS Class mismatches %s\n", + cxl_decoder_get_devname(p->root_decoder), + cxl_memdev_get_devname(memdev)); + + return -ENXIO; + } + } + } + + return 0; +} + static int validate_decoder(struct cxl_decoder *decoder, struct parsed_params *p) { const char *devname = cxl_decoder_get_devname(decoder); + int rc; switch(p->mode) { case CXL_DECODER_MODE_RAM: @@ -446,6 +493,10 @@ static int validate_decoder(struct cxl_decoder *decoder, return -EINVAL; } + rc = create_region_validate_qos_class(p); + if (rc) + return rc; + /* TODO check if the interleave config is possible under this decoder */ return 0; From patchwork Fri Mar 1 22:36:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 13579202 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA1663B1AC; Fri, 1 Mar 2024 22:37:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332662; cv=none; b=YwtJkXBo3WNocaUuqwg3EeHj4wFs7FHF6OX9MR+NivBQUsg/IW356Oy64sLVl8m0dpLCM5QLKvhtk2nXz7danpN1ru75Zd+IJOfAPrPKLOxe/oynnvjh4oIPpkPVZCoYmpTr0Hel9ulASNhy5Ab7q3/pXbK4DJZr6TqxOQ36xSc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709332662; c=relaxed/simple; bh=vfobGTS3PRSGK/2HyUbICHQSQiKDPbUXBWgzUK2WV1Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jqseVp3BiPorI0bhjFprioL4xR3ngbQ6h5up217BTSpFBN7OuNSKyRRHlTCV0Y6U+0cipH+C9GTR2nevEdFpWj+GxJInkkDX9ae/luh3iASLJ7j+cUyaO1PMalDkkUtqmoeI9NeGlbyBrvOOcnCgv2aYz0CC7wH/ZM+pX+tWvyE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6720CC433C7; Fri, 1 Mar 2024 22:37:42 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev Cc: vishal.l.verma@intel.com Subject: [NDCTL PATCH v8 4/4] ndctl: add test for qos_class in CXL test suite Date: Fri, 1 Mar 2024 15:36:43 -0700 Message-ID: <20240301223736.1380778-5-dave.jiang@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240301223736.1380778-1-dave.jiang@intel.com> References: <20240301223736.1380778-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add tests in cxl-qos-class.sh to verify qos_class are set with the fake qos_class create by the kernel. Root decoders should have qos_class attribute set. Memory devices should have ram_qos_class or pmem_qos_class set depending on which partitions are valid. Signed-off-by: Dave Jiang --- v8: - Change way to pick decoder to be consistent. (Vishal) - Change way to read memdev qos_class. (Vishal) - Move "done" on same line. (Vishal) --- test/common | 4 ++ test/cxl-qos-class.sh | 99 +++++++++++++++++++++++++++++++++++++++++++ test/meson.build | 2 + 3 files changed, 105 insertions(+) create mode 100755 test/cxl-qos-class.sh diff --git a/test/common b/test/common index f1023ef20f7e..5694820c7adc 100644 --- a/test/common +++ b/test/common @@ -150,3 +150,7 @@ check_dmesg() grep -q "Call Trace" <<< $log && err $1 true } + + +# CXL COMMON +TEST_QOS_CLASS=42 diff --git a/test/cxl-qos-class.sh b/test/cxl-qos-class.sh new file mode 100755 index 000000000000..fbc0e50b7fe4 --- /dev/null +++ b/test/cxl-qos-class.sh @@ -0,0 +1,99 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2024 Intel Corporation. All rights reserved. + +. $(dirname $0)/common + +rc=77 + +set -ex + +trap 'err $LINENO' ERR + +check_prereq "jq" + +modprobe -r cxl_test +modprobe cxl_test +rc=1 + +check_qos_decoders () { + # check root decoders have expected fake qos_class + # also make sure the number of root decoders equal to the number + # with qos_class found + json=$($CXL list -b cxl_test -D -d root) + decoders=$(echo "$json" | jq length) + count=0 + while read -r qos_class; do + if [[ "$qos_class" != "$TEST_QOS_CLASS" ]]; then + err "$LINENO" + fi + count=$((count+1)) + done <<< "$(echo "$json" | jq -r '.[] | .qos_class')" + + if [[ "$count" != "$decoders" ]]; then + err "$LINENO" + fi +} + +check_qos_memdevs () { + # Check that memdevs that expose ram_qos_class or pmem_qos_class have + # expected fake value programmed. + json=$(cxl list -b cxl_test -M) + ram_size=$(jq ".[] | .ram_size" <<< $json) + ram_qos_class=$(jq ".[] | .ram_qos_class" <<< $json) + pmem_size=$(jq ".[] | .pmem_size" <<< $json) + pmem_qos_class=$(jq ".[] | .pmem_qos_class" <<< $json) + + if [[ "$ram_size" != null ]] && ((ram_qos_class != TEST_QOS_CLASS)); then + err "$LINENO" + fi + + if [[ "$pmem_size" != null ]] && ((pmem_qos_class != TEST_QOS_CLASS)); then + err "$LINENO" + fi +} + +# Based on cxl-create-region.sh create_single() +destroy_regions() +{ + if [[ "$*" ]]; then + $CXL destroy-region -f -b cxl_test "$@" + else + $CXL destroy-region -f -b cxl_test all + fi +} + +create_region_check_qos() +{ + # Find an x1 decoder + decoder=$($CXL list -b cxl_test -D -d root | jq -r "[ .[] | + select(.max_available_extent > 0) | + select(.pmem_capable == true) | + select(.nr_targets == 1) ] | + .[0].decoder") + + # Find a memdev for this host-bridge + port_dev0=$($CXL list -T -d $decoder | jq -r ".[] | + .targets | .[] | select(.position == 0) | .target") + mem0=$($CXL list -M -p $port_dev0 | jq -r ".[0].memdev") + memdevs="$mem0" + + # Send create-region with -Q to enforce qos_class matching + region=$($CXL create-region -Q -d $decoder -m $memdevs | jq -r ".region") + if [[ ! $region ]]; then + echo "failed to create region" + err "$LINENO" + fi + + destroy_regions "$region" +} + +check_qos_decoders + +check_qos_memdevs + +create_region_check_qos + +check_dmesg "$LINEO" + +modprobe -r cxl_test diff --git a/test/meson.build b/test/meson.build index 5eb35749a95b..4892df11119f 100644 --- a/test/meson.build +++ b/test/meson.build @@ -160,6 +160,7 @@ cxl_events = find_program('cxl-events.sh') cxl_poison = find_program('cxl-poison.sh') cxl_sanitize = find_program('cxl-sanitize.sh') cxl_destroy_region = find_program('cxl-destroy-region.sh') +cxl_qos_class = find_program('cxl-qos-class.sh') tests = [ [ 'libndctl', libndctl, 'ndctl' ], @@ -192,6 +193,7 @@ tests = [ [ 'cxl-poison.sh', cxl_poison, 'cxl' ], [ 'cxl-sanitize.sh', cxl_sanitize, 'cxl' ], [ 'cxl-destroy-region.sh', cxl_destroy_region, 'cxl' ], + [ 'cxl-qos-class.sh', cxl_qos_class, 'cxl' ], ] if get_option('destructive').enabled()