diff options
Diffstat (limited to 'drivers/ras')
-rw-r--r-- | drivers/ras/Kconfig | 2 | ||||
-rw-r--r-- | drivers/ras/Makefile | 1 | ||||
-rw-r--r-- | drivers/ras/debugfs.c | 56 | ||||
-rw-r--r-- | drivers/ras/ras.c | 29 |
4 files changed, 88 insertions, 0 deletions
diff --git a/drivers/ras/Kconfig b/drivers/ras/Kconfig new file mode 100644 index 000000000000..f9da613052c2 --- /dev/null +++ b/drivers/ras/Kconfig @@ -0,0 +1,2 @@ +config RAS + bool diff --git a/drivers/ras/Makefile b/drivers/ras/Makefile new file mode 100644 index 000000000000..d7f73341ced3 --- /dev/null +++ b/drivers/ras/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_RAS) += ras.o debugfs.o diff --git a/drivers/ras/debugfs.c b/drivers/ras/debugfs.c new file mode 100644 index 000000000000..0322acf67ea5 --- /dev/null +++ b/drivers/ras/debugfs.c @@ -0,0 +1,56 @@ +#include <linux/debugfs.h> + +static struct dentry *ras_debugfs_dir; + +static atomic_t trace_count = ATOMIC_INIT(0); + +int ras_userspace_consumers(void) +{ + return atomic_read(&trace_count); +} +EXPORT_SYMBOL_GPL(ras_userspace_consumers); + +static int trace_show(struct seq_file *m, void *v) +{ + return atomic_read(&trace_count); +} + +static int trace_open(struct inode *inode, struct file *file) +{ + atomic_inc(&trace_count); + return single_open(file, trace_show, NULL); +} + +static int trace_release(struct inode *inode, struct file *file) +{ + atomic_dec(&trace_count); + return single_release(inode, file); +} + +static const struct file_operations trace_fops = { + .open = trace_open, + .read = seq_read, + .llseek = seq_lseek, + .release = trace_release, +}; + +int __init ras_add_daemon_trace(void) +{ + struct dentry *fentry; + + if (!ras_debugfs_dir) + return -ENOENT; + + fentry = debugfs_create_file("daemon_active", S_IRUSR, ras_debugfs_dir, + NULL, &trace_fops); + if (!fentry) + return -ENODEV; + + return 0; + +} + +void __init ras_debugfs_init(void) +{ + ras_debugfs_dir = debugfs_create_dir("ras", NULL); +} diff --git a/drivers/ras/ras.c b/drivers/ras/ras.c new file mode 100644 index 000000000000..b67dd362b7b6 --- /dev/null +++ b/drivers/ras/ras.c @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2014 Intel Corporation + * + * Authors: + * Chen, Gong <gong.chen@linux.intel.com> + */ + +#include <linux/init.h> +#include <linux/ras.h> + +#define CREATE_TRACE_POINTS +#define TRACE_INCLUDE_PATH ../../include/ras +#include <ras/ras_event.h> + +static int __init ras_init(void) +{ + int rc = 0; + + ras_debugfs_init(); + rc = ras_add_daemon_trace(); + + return rc; +} +subsys_initcall(ras_init); + +#if defined(CONFIG_ACPI_EXTLOG) || defined(CONFIG_ACPI_EXTLOG_MODULE) +EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event); +#endif +EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event); |