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Commit d7fc9d77 authored by Yazen Ghannam's avatar Yazen Ghannam Committed by Borislav Petkov
Browse files

EDAC: Add routine to check if MC devices list is empty 



We need to know if any MC devices have been allocated.

Signed-off-by: default avatarYazen Ghannam <Yazen.Ghannam@amd.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1485537863-2707-7-git-send-email-Yazen.Ghannam@amd.com


[ Prettify text. ]
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
parent df64636f

drivers/edac/edac_mc.c

+14 −0
Original line number Original line Diff line number Diff line
@@ -453,6 +453,20 @@ void edac_mc_free(struct mem_ctl_info *mci) 
}

}

EXPORT_SYMBOL_GPL(edac_mc_free);

EXPORT_SYMBOL_GPL(edac_mc_free);





bool edac_has_mcs(void)

{

	bool ret;



	mutex_lock(&mem_ctls_mutex);



	ret = list_empty(&mc_devices);



	mutex_unlock(&mem_ctls_mutex);



	return !ret;

}

EXPORT_SYMBOL_GPL(edac_has_mcs);



/* Caller must hold mem_ctls_mutex */

/* Caller must hold mem_ctls_mutex */

static struct mem_ctl_info *__find_mci_by_dev(struct device *dev)

static struct mem_ctl_info *__find_mci_by_dev(struct device *dev)

{

{

drivers/edac/edac_mc.h

+9 −0
Original line number Original line Diff line number Diff line
@@ -148,6 +148,15 @@ extern int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci, 
 */

 */

extern void edac_mc_free(struct mem_ctl_info *mci);

extern void edac_mc_free(struct mem_ctl_info *mci);





/**

 * edac_has_mcs() - Check if any MCs have been allocated.

 *

 * Returns:

 *	True if MC instances have been registered successfully.

 *	False otherwise.

 */

extern bool edac_has_mcs(void);



/**

/**

 * edac_mc_find() - Search for a mem_ctl_info structure whose index is @idx.

 * edac_mc_find() - Search for a mem_ctl_info structure whose index is @idx.

 *

 *