From mboxrd@z Thu Jan 1 00:00:00 1970 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 EB9ED2980C3; Thu, 22 May 2025 15:56:56 +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=1747929417; cv=none; b=kPyS1kEkxYwz+tValZzYA56OR3Vtngk8WV44QINUGQu6lKnTOiSQFBcwfiKdgUmL+e/P/FGvpUZpiiLR++lCf5MiP/MxFCu3SEscKnOvfmz3VXMY8GhpWydkJopZpqy0m2IDBIJh2PyOVNpdEctJvK/g+lGHhthYr1XK2qvSEdI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747929417; c=relaxed/simple; bh=ofDgc9Rb8H0hVOtbXo/ogGXQ4eqkR6plXbh7nqmjx30=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e4taPsopEZfDtaaKuxZaOT3QxM4Yxit8bIVWbuHzPxoYb2i4xZQp8k+2YHFNKJBzNU1CxR/mAADd0eTWvdFKle2BWgiqrcjmK9hiGyZRAZjUNt0OCCRBMGfvKOLk+aNexubban18gSDmwpl7WmUajFmtfKMndnNrnSftjRyV3Tg= 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 A8236C4CEE4; Thu, 22 May 2025 15:56:56 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev Cc: alison.schofield@intel.com, Dan Williams Subject: [NDCTL PATCH v8 1/4] cxl: Add cxl_bus_get_by_provider() Date: Thu, 22 May 2025 08:56:49 -0700 Message-ID: <20250522155653.1346768-2-dave.jiang@intel.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250522155653.1346768-1-dave.jiang@intel.com> References: <20250522155653.1346768-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add helper function cxl_bus_get_by_provider() in order to support unit test that will utilize the API call. Acked-by: Dan Williams Signed-off-by: Dave Jiang --- Documentation/cxl/lib/libcxl.txt | 2 ++ cxl/lib/libcxl.c | 11 +++++++++++ cxl/lib/libcxl.sym | 5 +++++ cxl/libcxl.h | 2 ++ 4 files changed, 20 insertions(+) diff --git a/Documentation/cxl/lib/libcxl.txt b/Documentation/cxl/lib/libcxl.txt index 40598a08b9f4..25ff406c2920 100644 --- a/Documentation/cxl/lib/libcxl.txt +++ b/Documentation/cxl/lib/libcxl.txt @@ -215,6 +215,8 @@ the associated bus object. const char *cxl_bus_get_provider(struct cxl_bus *bus); const char *cxl_bus_get_devname(struct cxl_bus *bus); int cxl_bus_get_id(struct cxl_bus *bus); +struct cxl_bus *cxl_bus_get_by_provider(struct cxl_ctx *ctx, + const char *provider); ---- The provider name of a bus is a persistent name that is independent of diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 63aa4ef3acdc..bab7343e8a4a 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -3358,6 +3358,17 @@ CXL_EXPORT struct cxl_ctx *cxl_bus_get_ctx(struct cxl_bus *bus) return cxl_port_get_ctx(&bus->port); } +CXL_EXPORT struct cxl_bus *cxl_bus_get_by_provider(struct cxl_ctx *ctx, + const char *provider) +{ + struct cxl_bus *bus; + + cxl_bus_foreach(ctx, bus) + if (strcmp(provider, cxl_bus_get_provider(bus)) == 0) + return bus; + return NULL; +} + CXL_EXPORT void cxl_cmd_unref(struct cxl_cmd *cmd) { if (!cmd) diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index 763151fbef59..4c9760f377e6 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -287,3 +287,8 @@ global: cxl_memdev_trigger_poison_list; cxl_region_trigger_poison_list; } LIBCXL_7; + +LIBCXL_9 { +global: + cxl_bus_get_by_provider; +} LIBECXL_8; diff --git a/cxl/libcxl.h b/cxl/libcxl.h index 43c082acd836..7a32b9b65736 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -122,6 +122,8 @@ int cxl_bus_get_id(struct cxl_bus *bus); struct cxl_port *cxl_bus_get_port(struct cxl_bus *bus); struct cxl_ctx *cxl_bus_get_ctx(struct cxl_bus *bus); int cxl_bus_disable_invalidate(struct cxl_bus *bus); +struct cxl_bus *cxl_bus_get_by_provider(struct cxl_ctx *ctx, + const char *provider); #define cxl_bus_foreach(ctx, bus) \ for (bus = cxl_bus_get_first(ctx); bus != NULL; \ -- 2.49.0