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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/edac/edac_stub.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/edac/edac_stub.c')
-rw-r--r-- | drivers/edac/edac_stub.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/edac/edac_stub.c b/drivers/edac/edac_stub.c new file mode 100644 index 00000000..6c86f6e5 --- /dev/null +++ b/drivers/edac/edac_stub.c @@ -0,0 +1,91 @@ +/* + * common EDAC components that must be in kernel + * + * Author: Dave Jiang <djiang@mvista.com> + * + * 2007 (c) MontaVista Software, Inc. + * 2010 (c) Advanced Micro Devices Inc. + * Borislav Petkov <borislav.petkov@amd.com> + * + * 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 <linux/atomic.h> +#include <linux/device.h> +#include <asm/edac.h> + +int edac_op_state = EDAC_OPSTATE_INVAL; +EXPORT_SYMBOL_GPL(edac_op_state); + +atomic_t edac_handlers = ATOMIC_INIT(0); +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); + +/* + * called to determine if there is an EDAC driver interested in + * knowing an event (such as NMI) occurred + */ +int edac_handler_set(void) +{ + if (edac_op_state == EDAC_OPSTATE_POLL) + return 0; + + return atomic_read(&edac_handlers); +} +EXPORT_SYMBOL_GPL(edac_handler_set); + +/* + * handler for NMI type of interrupts to assert error + */ +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); |