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pstore/ram: Restore ecc information block 

This was lost when proc/last_kmsg moved to pstore/console-ramoops.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
This commit is contained in:
Arve Hjønnevåg 2012-12-05 21:19:51 -08:00 committed by Anton Vorontsov
parent c31ad081e8
commit bd08ec33b5
2 changed files with 13 additions and 2 deletions
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12
fs/pstore/ram.c
View File

@ -136,6 +136,7 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type,
char **buf, struct pstore_info *psi)
{
ssize_t size;
ssize_t ecc_notice_size;
struct ramoops_context *cxt = psi->data;
struct persistent_ram_zone *prz;
@ -156,11 +157,18 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type,
time->tv_nsec = 0;
size = persistent_ram_old_size(prz);
*buf = kmemdup(persistent_ram_old(prz), size, GFP_KERNEL);
/* ECC correction notice */
ecc_notice_size = persistent_ram_ecc_string(prz, NULL, 0);
*buf = kmalloc(size + ecc_notice_size + 1, GFP_KERNEL);
if (*buf == NULL)
return -ENOMEM;
return size;
memcpy(*buf, persistent_ram_old(prz), size);
persistent_ram_ecc_string(prz, *buf + size, ecc_notice_size + 1);
return size + ecc_notice_size;
}
static size_t ramoops_write_kmsg_hdr(struct persistent_ram_zone *prz)

3
fs/pstore/ram_core.c
View File

@ -235,6 +235,9 @@ ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
{
ssize_t ret;
if (!prz->ecc_info.ecc_size)
return 0;
if (prz->corrected_bytes || prz->bad_blocks)
ret = snprintf(str, len, ""
"\n%d Corrected bytes, %d unrecoverable blocks\n",