[PATCH 1/5] EDAC: Carve out debugfs functionality
Borislav Petkov
bp at alien8.de
Tue Sep 22 09:37:01 PDT 2015
From: Borislav Petkov <bp at suse.de>
... into a separate compilation unit and drop a couple of
CONFIG_EDAC_DEBUG ifdefferies. Rename edac_create_debug_nodes() to
edac_create_debugfs_nodes(), while at it.
No functionality change.
Cc: <linux-edac at vger.kernel.org>
Signed-off-by: Borislav Petkov <bp at suse.de>
---
drivers/edac/Makefile | 2 +
drivers/edac/debugfs.c | 103 ++++++++++++++++++++++++++++++++++++++++
drivers/edac/edac_core.h | 2 +
drivers/edac/edac_mc_sysfs.c | 110 +------------------------------------------
drivers/edac/edac_module.h | 2 +
include/linux/edac.h | 2 -
6 files changed, 110 insertions(+), 111 deletions(-)
create mode 100644 drivers/edac/debugfs.c
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index ae3c5f3ce405..dbf53e08bdd1 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -12,6 +12,8 @@ obj-$(CONFIG_EDAC_MM_EDAC) += edac_core.o
edac_core-y := edac_mc.o edac_device.o edac_mc_sysfs.o
edac_core-y += edac_module.o edac_device_sysfs.o
+edac_core-$(CONFIG_EDAC_DEBUG) += debugfs.o
+
ifdef CONFIG_PCI
edac_core-y += edac_pci.o edac_pci_sysfs.o
endif
diff --git a/drivers/edac/debugfs.c b/drivers/edac/debugfs.c
new file mode 100644
index 000000000000..bcd558d5cb48
--- /dev/null
+++ b/drivers/edac/debugfs.c
@@ -0,0 +1,103 @@
+#include "edac_module.h"
+
+static struct dentry *edac_debugfs;
+
+static ssize_t edac_fake_inject_write(struct file *file,
+ const char __user *data,
+ size_t count, loff_t *ppos)
+{
+ 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 %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, errcount, 0, 0, 0,
+ mci->fake_inject_layer[0],
+ mci->fake_inject_layer[1],
+ mci->fake_inject_layer[2],
+ "FAKE ERROR", "for EDAC testing only");
+
+ return count;
+}
+
+static const struct file_operations debug_fake_inject_fops = {
+ .open = simple_open,
+ .write = edac_fake_inject_write,
+ .llseek = generic_file_llseek,
+};
+
+int __init edac_debugfs_init(void)
+{
+ edac_debugfs = debugfs_create_dir("edac", NULL);
+ if (IS_ERR(edac_debugfs)) {
+ edac_debugfs = NULL;
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+void edac_debugfs_exit(void)
+{
+ debugfs_remove(edac_debugfs);
+}
+
+int edac_create_debugfs_nodes(struct mem_ctl_info *mci)
+{
+ struct dentry *d, *parent;
+ char name[80];
+ int i;
+
+ if (!edac_debugfs)
+ return -ENODEV;
+
+ d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
+ if (!d)
+ return -ENOMEM;
+ parent = d;
+
+ for (i = 0; i < mci->n_layers; i++) {
+ sprintf(name, "fake_inject_%s",
+ edac_layer_name[mci->layers[i].type]);
+ d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
+ &mci->fake_inject_layer[i]);
+ if (!d)
+ goto nomem;
+ }
+
+ d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
+ &mci->fake_inject_ue);
+ 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);
+ if (!d)
+ goto nomem;
+
+ mci->debugfs = parent;
+ return 0;
+nomem:
+ debugfs_remove(mci->debugfs);
+ return -ENOMEM;
+}
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index ad42587c3f4d..4861542163d7 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -94,6 +94,8 @@ do { \
#define edac_dev_name(dev) (dev)->dev_name
+#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
+
/*
* The following are the structures to provide for a generic
* or abstract 'edac_device'. This set of structures and the
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 33df7d93c857..071f7fca5ff5 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -785,47 +785,6 @@ static ssize_t mci_max_location_show(struct device *dev,
return p - data;
}
-#ifdef CONFIG_EDAC_DEBUG
-static ssize_t edac_fake_inject_write(struct file *file,
- const char __user *data,
- size_t count, loff_t *ppos)
-{
- 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 %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, errcount, 0, 0, 0,
- mci->fake_inject_layer[0],
- mci->fake_inject_layer[1],
- mci->fake_inject_layer[2],
- "FAKE ERROR", "for EDAC testing only");
-
- return count;
-}
-
-static const struct file_operations debug_fake_inject_fops = {
- .open = simple_open,
- .write = edac_fake_inject_write,
- .llseek = generic_file_llseek,
-};
-#endif
-
/* default Control file */
static DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store);
@@ -896,71 +855,6 @@ static struct device_type mci_attr_type = {
.release = mci_attr_release,
};
-#ifdef CONFIG_EDAC_DEBUG
-static struct dentry *edac_debugfs;
-
-int __init edac_debugfs_init(void)
-{
- edac_debugfs = debugfs_create_dir("edac", NULL);
- if (IS_ERR(edac_debugfs)) {
- edac_debugfs = NULL;
- return -ENOMEM;
- }
- return 0;
-}
-
-void edac_debugfs_exit(void)
-{
- debugfs_remove(edac_debugfs);
-}
-
-static int edac_create_debug_nodes(struct mem_ctl_info *mci)
-{
- struct dentry *d, *parent;
- char name[80];
- int i;
-
- if (!edac_debugfs)
- return -ENODEV;
-
- d = debugfs_create_dir(mci->dev.kobj.name, edac_debugfs);
- if (!d)
- return -ENOMEM;
- parent = d;
-
- for (i = 0; i < mci->n_layers; i++) {
- sprintf(name, "fake_inject_%s",
- edac_layer_name[mci->layers[i].type]);
- d = debugfs_create_u8(name, S_IRUGO | S_IWUSR, parent,
- &mci->fake_inject_layer[i]);
- if (!d)
- goto nomem;
- }
-
- d = debugfs_create_bool("fake_inject_ue", S_IRUGO | S_IWUSR, parent,
- &mci->fake_inject_ue);
- 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);
- if (!d)
- goto nomem;
-
- mci->debugfs = parent;
- return 0;
-nomem:
- debugfs_remove(mci->debugfs);
- return -ENOMEM;
-}
-#endif
-
/*
* Create a new Memory Controller kobject instance,
* mc<id> under the 'mc' directory
@@ -1039,9 +933,7 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
goto fail_unregister_dimm;
#endif
-#ifdef CONFIG_EDAC_DEBUG
- edac_create_debug_nodes(mci);
-#endif
+ edac_create_debugfs_nodes(mci);
return 0;
fail_unregister_dimm:
diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h
index 26ecc52e073d..79a6c6e20819 100644
--- a/drivers/edac/edac_module.h
+++ b/drivers/edac/edac_module.h
@@ -63,12 +63,14 @@ extern void *edac_align_ptr(void **p, unsigned size, int n_elems);
#ifdef CONFIG_EDAC_DEBUG
int edac_debugfs_init(void);
void edac_debugfs_exit(void);
+int edac_create_debugfs_nodes(struct mem_ctl_info *mci);
#else
static inline int edac_debugfs_init(void)
{
return -ENODEV;
}
static inline void edac_debugfs_exit(void) {}
+static inline int edac_create_debugfs_nodes(struct mem_ctl_info *mci) { return 0; }
#endif
/*
diff --git a/include/linux/edac.h b/include/linux/edac.h
index da3b72e95db3..b3d87e5822f8 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -769,12 +769,10 @@ struct mem_ctl_info {
/* the internal state of this controller instance */
int op_state;
-#ifdef CONFIG_EDAC_DEBUG
struct dentry *debugfs;
u8 fake_inject_layer[EDAC_MAX_LAYERS];
u32 fake_inject_ue;
u16 fake_inject_count;
-#endif
};
/*
--
2.3.5
More information about the linux-arm-kernel
mailing list