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drivers/edac: add edac_mc_find API

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This simple patch adds an important CORE API for EDAC that EDAC drivers can
use to find their edac_mc control structure by passing a mem_ctl_info
'instance' value

Needed for subsequent patches

Signed-off-by: Douglas Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Douglas Thompson 2007-07-19 01:49:31 -07:00 committed by Linus Torvalds
parent 8ca47e0069
commit 5da0831c59
2 changed files with 29 additions and 0 deletions
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28
drivers/edac/edac_mc.c
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@ -1456,6 +1456,34 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci)
wait_for_completion(&mci->complete); wait_for_completion(&mci->complete);
} }
/**
* edac_mc_find: Search for a mem_ctl_info structure whose index is 'idx'.
*
* If found, return a pointer to the structure.
* Else return NULL.
*
* Caller must hold mem_ctls_mutex.
*/
struct mem_ctl_info * edac_mc_find(int idx)
{
struct list_head *item;
struct mem_ctl_info *mci;
list_for_each(item, &mc_devices) {
mci = list_entry(item, struct mem_ctl_info, link);
if (mci->mc_idx >= idx) {
if (mci->mc_idx == idx)
return mci;
break;
}
}
return NULL;
}
EXPORT_SYMBOL(edac_mc_find);
/** /**
* edac_mc_add_mc: Insert the 'mci' structure into the mci global list and * edac_mc_add_mc: Insert the 'mci' structure into the mci global list and
* create sysfs entries associated with mci structure * create sysfs entries associated with mci structure

1
drivers/edac/edac_mc.h
View File

@ -430,6 +430,7 @@ void edac_mc_dump_mci(struct mem_ctl_info *mci);
void edac_mc_dump_csrow(struct csrow_info *csrow); void edac_mc_dump_csrow(struct csrow_info *csrow);
#endif /* CONFIG_EDAC_DEBUG */ #endif /* CONFIG_EDAC_DEBUG */
extern struct mem_ctl_info * edac_mc_find(int idx);
extern int edac_mc_add_mc(struct mem_ctl_info *mci,int mc_idx); extern int edac_mc_add_mc(struct mem_ctl_info *mci,int mc_idx);
extern struct mem_ctl_info * edac_mc_del_mc(struct device *dev); extern struct mem_ctl_info * edac_mc_del_mc(struct device *dev);
extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci,