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Merge branch 'pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

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* 'pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  pstore: make pstore write function return normal success/fail value
  pstore: change mutex locking to spin_locks
  pstore: defer inserting OOPS entries into pstore
This commit is contained in:
Linus Torvalds 2011-11-01 10:52:29 -07:00
commit 1c39865151
6 changed files with 129 additions and 43 deletions
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12
drivers/acpi/apei/erst.c
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@ -933,7 +933,7 @@ static int erst_open_pstore(struct pstore_info *psi);
static int erst_close_pstore(struct pstore_info *psi);
static ssize_t erst_reader(u64 *id, enum pstore_type_id *type,
struct timespec *time, struct pstore_info *psi);
static u64 erst_writer(enum pstore_type_id type, unsigned int part,
static int erst_writer(enum pstore_type_id type, u64 *id, unsigned int part,
size_t size, struct pstore_info *psi);
static int erst_clearer(enum pstore_type_id type, u64 id,
struct pstore_info *psi);
@ -1040,11 +1040,12 @@ out:
return (rc < 0) ? rc : (len - sizeof(*rcd));
}
static u64 erst_writer(enum pstore_type_id type, unsigned int part,
static int erst_writer(enum pstore_type_id type, u64 *id, unsigned int part,
size_t size, struct pstore_info *psi)
{
struct cper_pstore_record *rcd = (struct cper_pstore_record *)
(erst_info.buf - sizeof(*rcd));
int ret;
memset(rcd, 0, sizeof(*rcd));
memcpy(rcd->hdr.signature, CPER_SIG_RECORD, CPER_SIG_SIZE);
@ -1079,9 +1080,10 @@ static u64 erst_writer(enum pstore_type_id type, unsigned int part,
}
rcd->sec_hdr.section_severity = CPER_SEV_FATAL;
erst_write(&rcd->hdr);
ret = erst_write(&rcd->hdr);
*id = rcd->hdr.record_id;
return rcd->hdr.record_id;
return ret;
}
static int erst_clearer(enum pstore_type_id type, u64 id,
@ -1165,7 +1167,7 @@ static int __init erst_init(void)
goto err_release_erange;
buf = kmalloc(erst_erange.size, GFP_KERNEL);
mutex_init(&erst_info.buf_mutex);
spin_lock_init(&erst_info.buf_lock);
if (buf) {
erst_info.buf = buf + sizeof(struct cper_pstore_record);
erst_info.bufsize = erst_erange.size -