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authorMatthew Garrett <mjg@redhat.com>2011-07-21 16:57:53 -0400
committerTony Luck <tony.luck@intel.com>2011-07-22 16:14:20 -0700
commit56280682ceeef74b692b3e21d1872049eea7c887 (patch)
tree6d00729db23dff065ad60bf2f7be3f96b6fd4008 /fs/pstore
parent638c1fd3033c76778e6d9975ad8a4a9cdd5b96d9 (diff)
downloadblackbird-op-linux-56280682ceeef74b692b3e21d1872049eea7c887.tar.gz
blackbird-op-linux-56280682ceeef74b692b3e21d1872049eea7c887.zip
pstore: Add extra context for writes and erases
EFI only provides small amounts of individual storage, and conventionally puts metadata in the storage variable name. Rather than add a metadata header to the (already limited) variable storage, it's easier for us to modify pstore to pass all the information we need to construct a unique variable name to the appropriate functions. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'fs/pstore')
-rw-r--r--fs/pstore/inode.c6
-rw-r--r--fs/pstore/platform.c9
2 files changed, 9 insertions, 6 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index b19884a1ba77..893b961dcfd8 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -39,8 +39,9 @@
#define PSTORE_NAMELEN 64
struct pstore_private {
- u64 id;
struct pstore_info *psi;
+ enum pstore_type_id type;
+ u64 id;
ssize_t size;
char data[];
};
@@ -73,7 +74,7 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry)
{
struct pstore_private *p = dentry->d_inode->i_private;
- p->psi->erase(p->id, p->psi);
+ p->psi->erase(p->type, p->id, p->psi);
return simple_unlink(dir, dentry);
}
@@ -192,6 +193,7 @@ int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id,
private = kmalloc(sizeof *private + size, GFP_KERNEL);
if (!private)
goto fail_alloc;
+ private->type = type;
private->id = id;
private->psi = psi;
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 221c04e5e333..163bb40511e7 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -78,7 +78,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
oopscount++;
while (total < kmsg_bytes) {
dst = psinfo->buf;
- hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount, part++);
+ hsize = sprintf(dst, "%s#%d Part%d\n", why, oopscount, part);
size = psinfo->bufsize - hsize;
dst += hsize;
@@ -94,8 +94,8 @@ static void pstore_dump(struct kmsg_dumper *dumper,
memcpy(dst, s1 + s1_start, l1_cpy);
memcpy(dst + l1_cpy, s2 + s2_start, l2_cpy);
- id = psinfo->write(PSTORE_TYPE_DMESG, hsize + l1_cpy + l2_cpy,
- psinfo);
+ id = psinfo->write(PSTORE_TYPE_DMESG, part,
+ hsize + l1_cpy + l2_cpy, psinfo);
if (reason == KMSG_DUMP_OOPS && pstore_is_mounted())
pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id,
psinfo->buf, hsize + l1_cpy + l2_cpy,
@@ -103,6 +103,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
l1 -= l1_cpy;
l2 -= l2_cpy;
total += l1_cpy + l2_cpy;
+ part++;
}
mutex_unlock(&psinfo->buf_mutex);
}
@@ -197,7 +198,7 @@ int pstore_write(enum pstore_type_id type, char *buf, size_t size)
mutex_lock(&psinfo->buf_mutex);
memcpy(psinfo->buf, buf, size);
- id = psinfo->write(type, size, psinfo);
+ id = psinfo->write(type, 0, size, psinfo);
if (pstore_is_mounted())
pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id, psinfo->buf,
size, CURRENT_TIME, psinfo);
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