Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the tracepoint

Borislav Petkov
2017-08-30T11:49:02Z

Btw,

how about communicating stuff to the userspace daemon like this?

This'll simplify a lot of detection in userspace.

Thoughts?

---
diff --git a/drivers/ras/debugfs.c b/drivers/ras/debugfs.c
index 501603057dff..62d3da9d256f 100644
--- a/drivers/ras/debugfs.c
+++ b/drivers/ras/debugfs.c
@@ -1,5 +1,7 @@
#include <linux/debugfs.h>

+#include "../../arch/x86/kernel/cpu/mcheck/mce-internal.h"
+
struct dentry *ras_debugfs_dir;

static atomic_t trace_count = ATOMIC_INIT(0);
@@ -12,7 +14,9 @@ EXPORT_SYMBOL_GPL(ras_userspace_consumers);

static int trace_show(struct seq_file *m, void *v)
{
- return atomic_read(&trace_count);
+ seq_printf(m, "readers:%d\n", atomic_read(&trace_count));
+ seq_printf(m, "has decoder:%d\n", mca_cfg.has_decoder);
+ return 0;
}

static int trace_open(struct inode *inode, struct file *file)

--
Regards/Gruss,
Boris.

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