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Commit 38ced28b authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

edac: allow specifying the error count with fake_inject 



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: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 69154d06

drivers/edac/edac_mc_sysfs.c

+13 −2
Original line number Original line Diff line number Diff line
@@ -812,18 +812,24 @@ static ssize_t edac_fake_inject_write(struct file *file, 
	struct device *dev = file->private_data;

	struct device *dev = file->private_data;

	struct mem_ctl_info *mci = to_mci(dev);

	struct mem_ctl_info *mci = to_mci(dev);

	static enum hw_event_mc_err_type type;

	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

	type = mci->fake_inject_ue ? HW_EVENT_ERR_UNCORRECTED

				   : HW_EVENT_ERR_CORRECTED;

				   : HW_EVENT_ERR_CORRECTED;





	printk(KERN_DEBUG

	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",

		(type == HW_EVENT_ERR_UNCORRECTED) ? "UE" : "CE",

		errcount > 1 ? "s" : "",

		mci->fake_inject_layer[0],

		mci->fake_inject_layer[0],

		mci->fake_inject_layer[1],

		mci->fake_inject_layer[1],

		mci->fake_inject_layer[2]

		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[0],

			     mci->fake_inject_layer[1],

			     mci->fake_inject_layer[1],

			     mci->fake_inject_layer[2],

			     mci->fake_inject_layer[2],
@@ -944,6 +950,11 @@ int edac_create_debug_nodes(struct mem_ctl_info *mci) 
	if (!d)

	if (!d)

		goto nomem;

		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,

	d = debugfs_create_file("fake_inject", S_IWUSR, parent,

				&mci->dev,

				&mci->dev,

				&debug_fake_inject_fops);

				&debug_fake_inject_fops);

include/linux/edac.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -665,6 +665,7 @@ struct mem_ctl_info { 
	struct dentry *debugfs;

	struct dentry *debugfs;

	u8 fake_inject_layer[EDAC_MAX_LAYERS];

	u8 fake_inject_layer[EDAC_MAX_LAYERS];

	u32 fake_inject_ue;

	u32 fake_inject_ue;

	u16 fake_inject_count;

#endif

#endif

};

};