int blk_should_fake_timeout(struct request_queue *q)
{
if (!test_bit(QUEUE_FLAG_FAIL_IO, &q->queue_flags))
return 0;
return should_fail(&fail_io_timeout, 1);
}
bool should_failslab(size_t size, gfp_t gfpflags)
{
if (gfpflags & __GFP_NOFAIL)
return false;
if (failslab.ignore_gfp_wait && (gfpflags & __GFP_WAIT))
return false;
return should_fail(&failslab.attr, size);
}
bool should_failslab(size_t size, gfp_t gfpflags, unsigned long cache_flags)
{
if (gfpflags & __GFP_NOFAIL)
return false;
if (failslab.ignore_gfp_reclaim && (gfpflags & __GFP_RECLAIM))
return false;
if (failslab.cache_filter && !(cache_flags & SLAB_FAILSLAB))
return false;
return should_fail(&failslab.attr, size);
}
void ufsdbg_fail_request(struct ufs_hba *hba, u32 *intr_status)
{
u8 ocs_err;
static const u32 errors[] = {
CONTROLLER_FATAL_ERROR,
SYSTEM_BUS_FATAL_ERROR,
INJECT_COMMAND_HANG,
};
if (!should_fail(&hba->debugfs_files.fail_attr, 1))
goto out;
*intr_status = errors[prandom_u32() % ARRAY_SIZE(errors)];
dev_info(hba->dev, "%s: fault-inject error: 0x%x\n",
__func__, *intr_status);
switch (*intr_status) {
case CONTROLLER_FATAL_ERROR: /* fall through */
ocs_err = OCS_FATAL_ERROR;
goto set_ocs;
case SYSTEM_BUS_FATAL_ERROR:
ocs_err = OCS_INVALID_CMD_TABLE_ATTR;
set_ocs:
if (!inject_fatal_err_tr(hba, ocs_err))
if (!inject_fatal_err_tm(hba, ocs_err))
*intr_status = 0;
break;
case INJECT_COMMAND_HANG:
if (!inject_cmd_hang_tr(hba))
inject_cmd_hang_tm(hba);
break;
default:
BUG();
/* some configurations ignore panics caused by BUG() */
break;
}
out:
return;
}
static bool should_fail_iommu(struct device *dev)
{
return dev->archdata.fail_iommu && should_fail(&fail_iommu, 1);
}
