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| author | Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> | 2013-06-05 20:52:20 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-20 09:05:02 +0200 |
| commit | a5e4797b0f46819a74a7233825137ed5d2f51b51 (patch) | |
| tree | 2b7df1fd50f6b046a259eb21d046c70dbb70a1d2 | |
| parent | powerpc/pseries: Read of-config partition via pstore (diff) | |
| download | linux-a5e4797b0f46819a74a7233825137ed5d2f51b51.tar.xz linux-a5e4797b0f46819a74a7233825137ed5d2f51b51.zip | |
powerpc/pseries: Read common partition via pstore
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 <aruna@linux.vnet.ibm.com>
Reviewed-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/platforms/pseries/nvram.c | 17 | ||||
| -rw-r--r-- | fs/pstore/inode.c | 3 | ||||
| -rw-r--r-- | include/linux/pstore.h | 1 |
3 files changed, 20 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c index f7392f6ea7b3..14cc486709f6 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 73148aef9e31..08c3d76b24ca 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, "powerpc-ofw-%s-%lld", psname, id); break; + case PSTORE_TYPE_PPC_COMMON: + sprintf(name, "powerpc-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 615dc18638b8..656699fcc7d7 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 }; |