Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757934Ab3DYKT1 (ORCPT ); Thu, 25 Apr 2013 06:19:27 -0400 Received: from e23smtp09.au.ibm.com ([202.81.31.142]:43033 "EHLO e23smtp09.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755629Ab3DYKTY (ORCPT ); Thu, 25 Apr 2013 06:19:24 -0400 Subject: [PATCH v3 8/8] powerpc/pseries: Read common partition via pstore To: linuxppc-dev@ozlabs.org, paulus@samba.org, linux-kernel@vger.kernel.org, benh@kernel.crashing.org From: Aruna Balakrishnaiah Cc: jkenisto@linux.vnet.ibm.com, tony.luck@intel.com, ananth@in.ibm.com, mahesh@linux.vnet.ibm.com, ccross@android.com, anton@samba.org, cbouatmailru@gmail.com, keescook@chromium.org Date: Thu, 25 Apr 2013 15:49:08 +0530 Message-ID: <20130425101908.21017.32553.stgit@aruna-ThinkPad-T420> In-Reply-To: <20130425100952.21017.51799.stgit@aruna-ThinkPad-T420> References: <20130425100952.21017.51799.stgit@aruna-ThinkPad-T420> User-Agent: StGit/0.16-41-gd1dd MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13042510-3568-0000-0000-0000037D8383 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2926 Lines: 90 This patch exploits pstore subsystem to read details of common partition in NVRAM to a separate file in /dev/pstore. For instance, common partition details will be stored in a file named [common-nvram-6]. Signed-off-by: Aruna Balakrishnaiah Reviewed-by: Jim Keniston --- arch/powerpc/platforms/pseries/nvram.c | 17 ++++++++++++++++- fs/pstore/inode.c | 3 +++ include/linux/pstore.h | 1 + 3 files changed, 20 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c index f7392f6..14cc486 100644 --- a/arch/powerpc/platforms/pseries/nvram.c +++ b/arch/powerpc/platforms/pseries/nvram.c @@ -138,10 +138,17 @@ static struct nvram_os_partition of_config_partition = { .os_partition = false }; +static struct nvram_os_partition common_partition = { + .name = "common", + .index = -1, + .os_partition = false +}; + static enum pstore_type_id nvram_type_ids[] = { PSTORE_TYPE_DMESG, PSTORE_TYPE_PPC_RTAS, PSTORE_TYPE_PPC_OF, + PSTORE_TYPE_PPC_COMMON, -1 }; static int read_type; @@ -530,7 +537,7 @@ static int nvram_pstore_write(enum pstore_type_id type, } /* - * Reads the oops/panic report, rtas and of-config partition. + * Reads the oops/panic report, rtas, of-config and common partition. * Returns the length of the data we read from each partition. * Returns 0 if we've been called before. */ @@ -566,6 +573,14 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type, time->tv_sec = 0; time->tv_nsec = 0; break; + case PSTORE_TYPE_PPC_COMMON: + sig = NVRAM_SIG_SYS; + part = &common_partition; + *type = PSTORE_TYPE_PPC_COMMON; + *id = PSTORE_TYPE_PPC_COMMON; + time->tv_sec = 0; + time->tv_nsec = 0; + break; default: return 0; } diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 8d4fb65..88cc050 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -330,6 +330,9 @@ int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id, int count, case PSTORE_TYPE_PPC_OF: sprintf(name, "of-%s-%lld", psname, id); break; + case PSTORE_TYPE_PPC_COMMON: + sprintf(name, "common-%s-%lld", psname, id); + break; case PSTORE_TYPE_UNKNOWN: sprintf(name, "unknown-%s-%lld", psname, id); break; diff --git a/include/linux/pstore.h b/include/linux/pstore.h index 615dc18..656699f 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -38,6 +38,7 @@ enum pstore_type_id { /* PPC64 partition types */ PSTORE_TYPE_PPC_RTAS = 4, PSTORE_TYPE_PPC_OF = 5, + PSTORE_TYPE_PPC_COMMON = 6, PSTORE_TYPE_UNKNOWN = 255 }; -- 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/