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>
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@ -453,6 +453,20 @@ void edac_mc_free(struct mem_ctl_info *mci)
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EXPORT_SYMBOL_GPL(edac_mc_free);
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bool edac_has_mcs(void)
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{
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bool ret;
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mutex_lock(&mem_ctls_mutex);
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ret = list_empty(&mc_devices);
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mutex_unlock(&mem_ctls_mutex);
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return !ret;
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}
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EXPORT_SYMBOL_GPL(edac_has_mcs);
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/* Caller must hold mem_ctls_mutex */
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static struct mem_ctl_info *__find_mci_by_dev(struct device *dev)
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{
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@ -148,6 +148,15 @@ extern int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci,
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*/
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extern void edac_mc_free(struct mem_ctl_info *mci);
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/**
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* edac_has_mcs() - Check if any MCs have been allocated.
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*
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* Returns:
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* True if MC instances have been registered successfully.
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* False otherwise.
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*/
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extern bool edac_has_mcs(void);
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/**
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* edac_mc_find() - Search for a mem_ctl_info structure whose index is @idx.
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*
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