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[PATCH] EDAC: mc numbers refactor 1-of-2
Remove add_mc_to_global_list(). In next patch, this function will be reimplemented with different semantics. 1 Reimplement add_mc_to_global_list() with semantics that allow the caller to determine the ID number for a mem_ctl_info structure. Then modify edac_mc_add_mc() so that the caller specifies the ID number for the new mem_ctl_info structure. Platform-specific code should be able to assign the ID numbers in a platform-specific manner. For instance, on Opteron it makes sense to have the ID of the mem_ctl_info structure match the ID of the node that the memory controller belongs to. 2 Modify callers of edac_mc_add_mc() so they use the new semantics. Signed-off-by: Doug Thompson <norsk5@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -257,7 +257,10 @@ static int amd76x_probe1(struct pci_dev *pdev, int dev_idx)
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amd76x_get_error_info(mci, &discard); /* clear counters */
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if (edac_mc_add_mc(mci)) {
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/* Here we assume that we will never see multiple instances of this
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* type of memory controller. The ID is therefore hardcoded to 0.
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*/
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if (edac_mc_add_mc(mci,0)) {
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debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
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goto fail;
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}
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@ -953,7 +953,10 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx)
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"tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm,
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pvt->remapbase, pvt->remaplimit);
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if (edac_mc_add_mc(mci)) {
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/* Here we assume that we will never see multiple instances of this
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* type of memory controller. The ID is therefore hardcoded to 0.
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*/
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if (edac_mc_add_mc(mci,0)) {
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debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
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goto fail;
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}
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@ -463,7 +463,10 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx)
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/* clear any pending errors, or initial state bits */
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e7xxx_get_error_info(mci, &discard);
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if (edac_mc_add_mc(mci) != 0) {
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/* Here we assume that we will never see multiple instances of this
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* type of memory controller. The ID is therefore hardcoded to 0.
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*/
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if (edac_mc_add_mc(mci,0)) {
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debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
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goto fail;
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}
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@ -1632,47 +1632,46 @@ static struct mem_ctl_info *find_mci_by_dev(struct device *dev)
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return NULL;
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}
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static int add_mc_to_global_list(struct mem_ctl_info *mci)
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/* Return 0 on success, 1 on failure.
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* Before calling this function, caller must
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* assign a unique value to mci->mc_idx.
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*/
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static int add_mc_to_global_list (struct mem_ctl_info *mci)
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{
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struct list_head *item, *insert_before;
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struct mem_ctl_info *p;
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int i;
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if (list_empty(&mc_devices)) {
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mci->mc_idx = 0;
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insert_before = &mc_devices;
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} else {
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if (find_mci_by_dev(mci->dev)) {
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edac_printk(KERN_WARNING, EDAC_MC,
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"%s (%s) %s %s already assigned %d\n",
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mci->dev->bus_id, dev_name(mci->dev),
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mci->mod_name, mci->ctl_name,
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mci->mc_idx);
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return 1;
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insert_before = &mc_devices;
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if (unlikely((p = find_mci_by_dev(mci->dev)) != NULL))
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goto fail0;
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list_for_each(item, &mc_devices) {
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p = list_entry(item, struct mem_ctl_info, link);
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if (p->mc_idx >= mci->mc_idx) {
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if (unlikely(p->mc_idx == mci->mc_idx))
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goto fail1;
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insert_before = item;
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break;
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}
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insert_before = NULL;
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i = 0;
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list_for_each(item, &mc_devices) {
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p = list_entry(item, struct mem_ctl_info, link);
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if (p->mc_idx != i) {
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insert_before = item;
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break;
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}
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i++;
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}
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mci->mc_idx = i;
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if (insert_before == NULL)
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insert_before = &mc_devices;
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}
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list_add_tail_rcu(&mci->link, insert_before);
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return 0;
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fail0:
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edac_printk(KERN_WARNING, EDAC_MC,
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"%s (%s) %s %s already assigned %d\n", p->dev->bus_id,
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dev_name(p->dev), p->mod_name, p->ctl_name, p->mc_idx);
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return 1;
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fail1:
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edac_printk(KERN_WARNING, EDAC_MC,
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"bug in low-level driver: attempt to assign\n"
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" duplicate mc_idx %d in %s()\n", p->mc_idx, __func__);
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return 1;
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}
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static void complete_mc_list_del(struct rcu_head *head)
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@ -1696,6 +1695,7 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci)
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* edac_mc_add_mc: Insert the 'mci' structure into the mci global list and
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* create sysfs entries associated with mci structure
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* @mci: pointer to the mci structure to be added to the list
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* @mc_idx: A unique numeric identifier to be assigned to the 'mci' structure.
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*
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* Return:
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* 0 Success
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@ -1703,9 +1703,10 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci)
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*/
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/* FIXME - should a warning be printed if no error detection? correction? */
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int edac_mc_add_mc(struct mem_ctl_info *mci)
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int edac_mc_add_mc(struct mem_ctl_info *mci, int mc_idx)
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{
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debugf0("%s()\n", __func__);
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mci->mc_idx = mc_idx;
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#ifdef CONFIG_EDAC_DEBUG
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if (edac_debug_level >= 3)
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edac_mc_dump_mci(mci);
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@ -417,7 +417,7 @@ void edac_mc_dump_mci(struct mem_ctl_info *mci);
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void edac_mc_dump_csrow(struct csrow_info *csrow);
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#endif /* CONFIG_EDAC_DEBUG */
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extern int edac_mc_add_mc(struct mem_ctl_info *mci);
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extern int edac_mc_add_mc(struct mem_ctl_info *mci,int mc_idx);
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extern struct mem_ctl_info * edac_mc_del_mc(struct device *dev);
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extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci,
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unsigned long page);
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@ -208,7 +208,10 @@ static int i82860_probe1(struct pci_dev *pdev, int dev_idx)
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i82860_get_error_info(mci, &discard); /* clear counters */
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if (edac_mc_add_mc(mci)) {
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/* Here we assume that we will never see multiple instances of this
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* type of memory controller. The ID is therefore hardcoded to 0.
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*/
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if (edac_mc_add_mc(mci,0)) {
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debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
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edac_mc_free(mci);
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} else {
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@ -390,7 +390,10 @@ static int i82875p_probe1(struct pci_dev *pdev, int dev_idx)
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i82875p_get_error_info(mci, &discard); /* clear counters */
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if (edac_mc_add_mc(mci)) {
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/* Here we assume that we will never see multiple instances of this
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* type of memory controller. The ID is therefore hardcoded to 0.
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*/
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if (edac_mc_add_mc(mci,0)) {
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debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
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goto fail3;
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}
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@ -304,7 +304,10 @@ static int r82600_probe1(struct pci_dev *pdev, int dev_idx)
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r82600_get_error_info(mci, &discard); /* clear counters */
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if (edac_mc_add_mc(mci)) {
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/* Here we assume that we will never see multiple instances of this
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* type of memory controller. The ID is therefore hardcoded to 0.
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*/
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if (edac_mc_add_mc(mci,0)) {
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debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
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goto fail;
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}
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