Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933364AbbBQOZK (ORCPT ); Tue, 17 Feb 2015 09:25:10 -0500 Received: from e06smtp11.uk.ibm.com ([195.75.94.107]:57875 "EHLO e06smtp11.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933301AbbBQOZE (ORCPT ); Tue, 17 Feb 2015 09:25:04 -0500 From: Michael Mueller To: qemu-devel@nongnu.org, kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Gleb Natapov , Alexander Graf , Christian Borntraeger , "Jason J. Herne" , Cornelia Huck , Paolo Bonzini , Andreas Faerber , Richard Henderson , Michael Mueller Subject: [RFC PATCH v2 07/15] cpu-model/s390: Add cpu model alias definition routines Date: Tue, 17 Feb 2015 15:24:05 +0100 Message-Id: <1424183053-4310-8-git-send-email-mimu@linux.vnet.ibm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1424183053-4310-1-git-send-email-mimu@linux.vnet.ibm.com> References: <1424183053-4310-1-git-send-email-mimu@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15021714-0041-0000-0000-000003690CE7 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3743 Lines: 125 This patch implements the infrastructure to dynamically add cpu model aliases. Signed-off-by: Michael Mueller Reviewed-by: Cornelia Huck --- target-s390x/cpu-models.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++ target-s390x/cpu-models.h | 11 +++++++ 2 files changed, 88 insertions(+) diff --git a/target-s390x/cpu-models.c b/target-s390x/cpu-models.c index 9e5c5fb..8d2c2e2 100644 --- a/target-s390x/cpu-models.c +++ b/target-s390x/cpu-models.c @@ -90,3 +90,80 @@ S390_PROC_DEF("2827-ga1", CPU_S390_2827_GA1, "IBM zEnterprise EC12 GA1") S390_PROC_DEF("2827-ga2", CPU_S390_2827_GA2, "IBM zEnterprise EC12 GA2") S390_PROC_DEF("2828-ga1", CPU_S390_2828_GA1, "IBM zEnterprise BC12 GA1") +static GSList *s390_cpu_aliases; + +static gint s390_cpu_compare_class_name(gconstpointer a, gconstpointer b) +{ + const char *aname = object_class_get_name((ObjectClass *) a); + const char *bname = b; + int blen; + + blen = strlen(bname); + if (!strncasecmp(bname, aname, blen) && + !strcmp(aname + blen, "-" TYPE_S390_CPU)) { + return 0; + } + return -1; +} + +/** + * s390_cpu_class_by_name - retrive cpu object class by given name + * @name: the cpu model name + * + * Returns: address of object class on success + * NULL if name is not a valid model name + */ +ObjectClass *s390_cpu_class_by_name(const char *name) +{ + GSList *list, *item; + ObjectClass *ret = NULL; + S390CPUAlias *alias; + + for (item = s390_cpu_aliases; item != NULL; item = item->next) { + alias = (S390CPUAlias *) item->data; + if (strcmp(alias->name, name) == 0) { + return s390_cpu_class_by_name(alias->model); + } + } + list = object_class_get_list(TYPE_S390_CPU, false); + item = g_slist_find_custom(list, name, s390_cpu_compare_class_name); + if (item) { + ret = OBJECT_CLASS(item->data); + } + g_slist_free(list); + return ret; +} + +/** + * set_s390_cpu_alias - define a alias for an existing cpu model + * @name: the cpu alias name + * @model: the cpu model name + * + * Returns: 0 on success + * -EINVAL if name or model is NULL or both are idential + * or model is not a valid cpu model + * -ENOMEM if internal memory allocation fails + */ +int set_s390_cpu_alias(const char *name, const char *model) +{ + S390CPUAlias *alias; + + if (!name || !model) { + return -EINVAL; + } + if (!strcmp(name, model)) { + return -EINVAL; + } + if (!s390_cpu_class_by_name(model)) { + return -EINVAL; + } + alias = g_try_malloc0(sizeof(S390CPUAlias)); + if (!alias) { + return -ENOMEM; + } + alias->name = g_strdup(name); + alias->model = g_strdup(model); + s390_cpu_aliases = g_slist_append(s390_cpu_aliases, alias); + return 0; +} + diff --git a/target-s390x/cpu-models.h b/target-s390x/cpu-models.h index 41af159..623a7b2 100644 --- a/target-s390x/cpu-models.h +++ b/target-s390x/cpu-models.h @@ -34,6 +34,17 @@ #define cpu_class(x) (((x) >> 20) & 0x3) #define cpu_generation(x) (((x) >> 24) & 0xff) +ObjectClass *s390_cpu_class_by_name(const char *name); +int set_s390_cpu_alias(const char *name, const char *model); + +/* + * S390 cpu aliases will be added dynamically + */ +typedef struct S390CPUAlias { + char *name; + char *model; +} S390CPUAlias; + /* * bits 0-7 : CMOS generation * bits 8-9 : reserved -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/