diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/acpi/apei/erst.c | 38 | ||||
-rw-r--r-- | drivers/firmware/efi/efi-pstore.c | 104 |
2 files changed, 59 insertions, 83 deletions
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index ec4f507b524f..bbefb7522f80 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -925,10 +925,7 @@ static int erst_check_table(struct acpi_table_erst *erst_tab) 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, int *count, - struct timespec *time, char **buf, - bool *compressed, ssize_t *ecc_notice_size, - struct pstore_info *psi); +static ssize_t erst_reader(struct pstore_record *record); static int erst_writer(enum pstore_type_id type, enum kmsg_dump_reason reason, u64 *id, unsigned int part, int count, bool compressed, size_t size, struct pstore_info *psi); @@ -986,10 +983,7 @@ static int erst_close_pstore(struct pstore_info *psi) return 0; } -static ssize_t erst_reader(u64 *id, enum pstore_type_id *type, int *count, - struct timespec *time, char **buf, - bool *compressed, ssize_t *ecc_notice_size, - struct pstore_info *psi) +static ssize_t erst_reader(struct pstore_record *record) { int rc; ssize_t len = 0; @@ -1027,33 +1021,33 @@ skip: if (uuid_le_cmp(rcd->hdr.creator_id, CPER_CREATOR_PSTORE) != 0) goto skip; - *buf = kmalloc(len, GFP_KERNEL); - if (*buf == NULL) { + record->buf = kmalloc(len, GFP_KERNEL); + if (record->buf == NULL) { rc = -ENOMEM; goto out; } - memcpy(*buf, rcd->data, len - sizeof(*rcd)); - *id = record_id; - *compressed = false; - *ecc_notice_size = 0; + memcpy(record->buf, rcd->data, len - sizeof(*rcd)); + record->id = record_id; + record->compressed = false; + record->ecc_notice_size = 0; if (uuid_le_cmp(rcd->sec_hdr.section_type, CPER_SECTION_TYPE_DMESG_Z) == 0) { - *type = PSTORE_TYPE_DMESG; - *compressed = true; + record->type = PSTORE_TYPE_DMESG; + record->compressed = true; } else if (uuid_le_cmp(rcd->sec_hdr.section_type, CPER_SECTION_TYPE_DMESG) == 0) - *type = PSTORE_TYPE_DMESG; + record->type = PSTORE_TYPE_DMESG; else if (uuid_le_cmp(rcd->sec_hdr.section_type, CPER_SECTION_TYPE_MCE) == 0) - *type = PSTORE_TYPE_MCE; + record->type = PSTORE_TYPE_MCE; else - *type = PSTORE_TYPE_UNKNOWN; + record->type = PSTORE_TYPE_UNKNOWN; if (rcd->hdr.validation_bits & CPER_VALID_TIMESTAMP) - time->tv_sec = rcd->hdr.timestamp; + record->time.tv_sec = rcd->hdr.timestamp; else - time->tv_sec = 0; - time->tv_nsec = 0; + record->time.tv_sec = 0; + record->time.tv_nsec = 0; out: kfree(rcd); diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c index f402ba2eed46..bda24129e85b 100644 --- a/drivers/firmware/efi/efi-pstore.c +++ b/drivers/firmware/efi/efi-pstore.c @@ -28,26 +28,16 @@ static int efi_pstore_close(struct pstore_info *psi) return 0; } -struct pstore_read_data { - u64 *id; - enum pstore_type_id *type; - int *count; - struct timespec *timespec; - bool *compressed; - ssize_t *ecc_notice_size; - char **buf; -}; - static inline u64 generic_id(unsigned long timestamp, unsigned int part, int count) { return ((u64) timestamp * 100 + part) * 1000 + count; } -static int efi_pstore_read_func(struct efivar_entry *entry, void *data) +static int efi_pstore_read_func(struct efivar_entry *entry, + struct pstore_record *record) { efi_guid_t vendor = LINUX_EFI_CRASH_GUID; - struct pstore_read_data *cb_data = data; char name[DUMP_NAME_LEN], data_type; int i; int cnt; @@ -61,37 +51,37 @@ static int efi_pstore_read_func(struct efivar_entry *entry, void *data) name[i] = entry->var.VariableName[i]; if (sscanf(name, "dump-type%u-%u-%d-%lu-%c", - cb_data->type, &part, &cnt, &time, &data_type) == 5) { - *cb_data->id = generic_id(time, part, cnt); - *cb_data->count = cnt; - cb_data->timespec->tv_sec = time; - cb_data->timespec->tv_nsec = 0; + &record->type, &part, &cnt, &time, &data_type) == 5) { + record->id = generic_id(time, part, cnt); + record->count = cnt; + record->time.tv_sec = time; + record->time.tv_nsec = 0; if (data_type == 'C') - *cb_data->compressed = true; + record->compressed = true; else - *cb_data->compressed = false; - *cb_data->ecc_notice_size = 0; + record->compressed = false; + record->ecc_notice_size = 0; } else if (sscanf(name, "dump-type%u-%u-%d-%lu", - cb_data->type, &part, &cnt, &time) == 4) { - *cb_data->id = generic_id(time, part, cnt); - *cb_data->count = cnt; - cb_data->timespec->tv_sec = time; - cb_data->timespec->tv_nsec = 0; - *cb_data->compressed = false; - *cb_data->ecc_notice_size = 0; + &record->type, &part, &cnt, &time) == 4) { + record->id = generic_id(time, part, cnt); + record->count = cnt; + record->time.tv_sec = time; + record->time.tv_nsec = 0; + record->compressed = false; + record->ecc_notice_size = 0; } else if (sscanf(name, "dump-type%u-%u-%lu", - cb_data->type, &part, &time) == 3) { + &record->type, &part, &time) == 3) { /* * Check if an old format, * which doesn't support holding * multiple logs, remains. */ - *cb_data->id = generic_id(time, part, 0); - *cb_data->count = 0; - cb_data->timespec->tv_sec = time; - cb_data->timespec->tv_nsec = 0; - *cb_data->compressed = false; - *cb_data->ecc_notice_size = 0; + record->id = generic_id(time, part, 0); + record->count = 0; + record->time.tv_sec = time; + record->time.tv_nsec = 0; + record->compressed = false; + record->ecc_notice_size = 0; } else return 0; @@ -99,7 +89,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry, void *data) __efivar_entry_get(entry, &entry->var.Attributes, &entry->var.DataSize, entry->var.Data); size = entry->var.DataSize; - memcpy(*cb_data->buf, entry->var.Data, + memcpy(record->buf, entry->var.Data, (size_t)min_t(unsigned long, EFIVARS_DATA_SIZE_MAX, size)); return size; @@ -164,7 +154,7 @@ static int efi_pstore_scan_sysfs_exit(struct efivar_entry *pos, /** * efi_pstore_sysfs_entry_iter * - * @data: function-specific data to pass to callback + * @record: pstore record to pass to callback * @pos: entry to begin iterating from * * You MUST call efivar_enter_iter_begin() before this function, and @@ -175,7 +165,8 @@ static int efi_pstore_scan_sysfs_exit(struct efivar_entry *pos, * the next entry of the last one passed to efi_pstore_read_func(). * To begin iterating from the beginning of the list @pos must be %NULL. */ -static int efi_pstore_sysfs_entry_iter(void *data, struct efivar_entry **pos) +static int efi_pstore_sysfs_entry_iter(struct pstore_record *record, + struct efivar_entry **pos) { struct efivar_entry *entry, *n; struct list_head *head = &efivar_sysfs_list; @@ -186,7 +177,7 @@ static int efi_pstore_sysfs_entry_iter(void *data, struct efivar_entry **pos) list_for_each_entry_safe(entry, n, head, list) { efi_pstore_scan_sysfs_enter(entry, n, head); - size = efi_pstore_read_func(entry, data); + size = efi_pstore_read_func(entry, record); ret = efi_pstore_scan_sysfs_exit(entry, n, head, size < 0); if (ret) @@ -201,7 +192,7 @@ static int efi_pstore_sysfs_entry_iter(void *data, struct efivar_entry **pos) list_for_each_entry_safe_from((*pos), n, head, list) { efi_pstore_scan_sysfs_enter((*pos), n, head); - size = efi_pstore_read_func((*pos), data); + size = efi_pstore_read_func((*pos), record); ret = efi_pstore_scan_sysfs_exit((*pos), n, head, size < 0); if (ret) return ret; @@ -225,36 +216,27 @@ static int efi_pstore_sysfs_entry_iter(void *data, struct efivar_entry **pos) * size < 0: Failed to get data of entry logging via efi_pstore_write(), * and pstore will stop reading entry. */ -static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type, - int *count, struct timespec *timespec, - char **buf, bool *compressed, - ssize_t *ecc_notice_size, - struct pstore_info *psi) +static ssize_t efi_pstore_read(struct pstore_record *record) { - struct pstore_read_data data; + struct efivar_entry *entry = (struct efivar_entry *)record->psi->data; ssize_t size; - data.id = id; - data.type = type; - data.count = count; - data.timespec = timespec; - data.compressed = compressed; - data.ecc_notice_size = ecc_notice_size; - data.buf = buf; - - *data.buf = kzalloc(EFIVARS_DATA_SIZE_MAX, GFP_KERNEL); - if (!*data.buf) + record->buf = kzalloc(EFIVARS_DATA_SIZE_MAX, GFP_KERNEL); + if (!record->buf) return -ENOMEM; if (efivar_entry_iter_begin()) { - kfree(*data.buf); - return -EINTR; + size = -EINTR; + goto out; } - size = efi_pstore_sysfs_entry_iter(&data, - (struct efivar_entry **)&psi->data); + size = efi_pstore_sysfs_entry_iter(record, &entry); efivar_entry_iter_end(); - if (size <= 0) - kfree(*data.buf); + +out: + if (size <= 0) { + kfree(record->buf); + record->buf = NULL; + } return size; } |