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Subject[PATCH EDAC] edac: allow specifying the error count with fake_inject
Date
In order to test if the error counters are properly incremented,
add a way to specify how many errors were generated by a trace.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
drivers/edac/edac_mc_sysfs.c | 15 +++++++++++++--
include/linux/edac.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index a2bf7e9..ed0bc07 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -812,18 +812,24 @@ static ssize_t edac_fake_inject_write(struct file *file,
struct device *dev = file->private_data;
struct mem_ctl_info *mci = to_mci(dev);
static enum hw_event_mc_err_type type;
+ u16 errcount = mci->fake_inject_count;
+
+ if (!errcount)
+ errcount = 1;

type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED
: HW_EVENT_ERR_CORRECTED;

printk(KERN_DEBUG
- "Generating a %s fake error to %d.%d.%d to test core handling. NOTE: this won't test the driver-specific decoding logic.\n",
+ "Generating %d %s fake error%s to %d.%d.%d to test core handling. NOTE: this won't test the driver-specific decoding logic.\n",
+ errcount,
(type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",
+ errcount > 1 ? "s" : "",
mci->fake_inject_layer[0],
mci->fake_inject_layer[1],
mci->fake_inject_layer[2]
);
- edac_mc_handle_error(type, mci, 1, 0, 0, 0,
+ edac_mc_handle_error(type, mci, errcount, 0, 0, 0,
mci->fake_inject_layer[0],
mci->fake_inject_layer[1],
mci->fake_inject_layer[2],
@@ -944,6 +950,11 @@ int edac_create_debug_nodes(struct mem_ctl_info *mci)
if (!d)
goto nomem;

+ d = debugfs_create_u16("fake_inject_count", S_IRUGO | S_IWUSR, parent,
+ &mci->fake_inject_count);
+ if (!d)
+ goto nomem;
+
d = debugfs_create_file("fake_inject", S_IWUSR, parent,
&mci->dev,
&debug_fake_inject_fops);
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 6677af8..bab9f84 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -665,6 +665,7 @@ struct mem_ctl_info {
struct dentry *debugfs;
u8 fake_inject_layer[EDAC_MAX_LAYERS];
u32 fake_inject_ue;
+ u16 fake_inject_count;
#endif
};

--
1.7.10.2


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