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| author | Yazen Ghannam <Yazen.Ghannam@amd.com> | 2017-01-27 18:24:21 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2017-01-28 14:36:47 +0100 |
| commit | d7fc9d77acb8651e5fcb77df71dfd11fcf1f08ba (patch) | |
| tree | 8b425f989437a0ff7e535dfb46b889441fbb1cba | |
| parent | EDAC, amd64: Remove unused printing macros (diff) | |
| download | linux-d7fc9d77acb8651e5fcb77df71dfd11fcf1f08ba.tar.xz linux-d7fc9d77acb8651e5fcb77df71dfd11fcf1f08ba.zip | |
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: Yazen 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: Borislav Petkov <bp@suse.de>
| -rw-r--r-- | drivers/edac/edac_mc.c | 14 | ||||
| -rw-r--r-- | drivers/edac/edac_mc.h | 9 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index 750891ea07de..e5573c56b15e 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -453,6 +453,20 @@ void edac_mc_free(struct mem_ctl_info *mci) } 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 */ static struct mem_ctl_info *__find_mci_by_dev(struct device *dev) { diff --git a/drivers/edac/edac_mc.h b/drivers/edac/edac_mc.h index 50fc1dc9c0d8..5357800e418d 100644 --- a/drivers/edac/edac_mc.h +++ b/drivers/edac/edac_mc.h @@ -149,6 +149,15 @@ extern int edac_mc_add_mc_with_groups(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. * * @idx: index to be seek |