diff options
Diffstat (limited to 'drivers/edac/edac_stub.c')
| -rw-r--r-- | drivers/edac/edac_stub.c | 74 |
1 files changed, 69 insertions, 5 deletions
diff --git a/drivers/edac/edac_stub.c b/drivers/edac/edac_stub.c index 20b428aa155..9d9e18aefaa 100644 --- a/drivers/edac/edac_stub.c +++ b/drivers/edac/edac_stub.c @@ -3,15 +3,19 @@ * * Author: Dave Jiang <djiang@mvista.com> * - * 2007 (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. + * 2007 (c) MontaVista Software, Inc. + * 2010 (c) Advanced Micro Devices Inc. + * Borislav Petkov <bp@alien8.de> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. * */ #include <linux/module.h> #include <linux/edac.h> -#include <asm/atomic.h> +#include <linux/atomic.h> +#include <linux/device.h> #include <asm/edac.h> int edac_op_state = EDAC_OPSTATE_INVAL; @@ -23,6 +27,27 @@ EXPORT_SYMBOL_GPL(edac_handlers); int edac_err_assert = 0; EXPORT_SYMBOL_GPL(edac_err_assert); +static atomic_t edac_subsys_valid = ATOMIC_INIT(0); + +int edac_report_status = EDAC_REPORTING_ENABLED; +EXPORT_SYMBOL_GPL(edac_report_status); + +static int __init edac_report_setup(char *str) +{ + if (!str) + return -EINVAL; + + if (!strncmp(str, "on", 2)) + set_edac_report_status(EDAC_REPORTING_ENABLED); + else if (!strncmp(str, "off", 3)) + set_edac_report_status(EDAC_REPORTING_DISABLED); + else if (!strncmp(str, "force", 5)) + set_edac_report_status(EDAC_REPORTING_FORCE); + + return 0; +} +__setup("edac_report=", edac_report_setup); + /* * called to determine if there is an EDAC driver interested in * knowing an event (such as NMI) occurred @@ -44,3 +69,42 @@ void edac_atomic_assert_error(void) edac_err_assert++; } EXPORT_SYMBOL_GPL(edac_atomic_assert_error); + +/* + * sysfs object: /sys/devices/system/edac + * need to export to other files + */ +struct bus_type edac_subsys = { + .name = "edac", + .dev_name = "edac", +}; +EXPORT_SYMBOL_GPL(edac_subsys); + +/* return pointer to the 'edac' node in sysfs */ +struct bus_type *edac_get_sysfs_subsys(void) +{ + int err = 0; + + if (atomic_read(&edac_subsys_valid)) + goto out; + + /* create the /sys/devices/system/edac directory */ + err = subsys_system_register(&edac_subsys, NULL); + if (err) { + printk(KERN_ERR "Error registering toplevel EDAC sysfs dir\n"); + return NULL; + } + +out: + atomic_inc(&edac_subsys_valid); + return &edac_subsys; +} +EXPORT_SYMBOL_GPL(edac_get_sysfs_subsys); + +void edac_put_sysfs_subsys(void) +{ + /* last user unregisters it */ + if (atomic_dec_and_test(&edac_subsys_valid)) + bus_unregister(&edac_subsys); +} +EXPORT_SYMBOL_GPL(edac_put_sysfs_subsys); |