Re: [RFC 1/1] edac: Add a counter parameter for edac_device_handle_ue/ce()

From: Mauro Carvalho Chehab
Date: Thu Jul 25 2019 - 14:37:16 EST

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Em Mon, 15 Jul 2019 13:53:07 +0300
Hanna Hawa <hhhawa@xxxxxxxxxx> escreveu:

> Add a counter parameter in order to avoid losing errors count for edac
> device, the error count reports the number of errors reported by an edac
> device similar to the way MC_EDAC do.
>
> Signed-off-by: Hanna Hawa <hhhawa@xxxxxxxxxx>
> ---
> drivers/edac/altera_edac.c | 20 ++++++++++++--------
> drivers/edac/amd8111_edac.c | 6 +++---
> drivers/edac/cpc925_edac.c | 4 ++--
> drivers/edac/edac_device.c | 18 ++++++++++--------
> drivers/edac/edac_device.h | 8 ++++++--
> drivers/edac/highbank_l2_edac.c | 4 ++--
> drivers/edac/mpc85xx_edac.c | 4 ++--
> drivers/edac/mv64x60_edac.c | 4 ++--
> drivers/edac/octeon_edac-l2c.c | 20 ++++++++++----------
> drivers/edac/octeon_edac-pc.c | 6 +++---
> drivers/edac/qcom_edac.c | 8 ++++----
> drivers/edac/thunderx_edac.c | 10 +++++-----
> drivers/edac/xgene_edac.c | 26 +++++++++++++-------------
> 13 files changed, 74 insertions(+), 64 deletions(-)
>
> diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
> index 8816f74..747dd43 100644
> --- a/drivers/edac/altera_edac.c
> +++ b/drivers/edac/altera_edac.c
> @@ -616,12 +616,12 @@ static irqreturn_t altr_edac_device_handler(int irq, void *dev_id)
> if (irq == drvdata->sb_irq) {
> if (priv->ce_clear_mask)
> writel(priv->ce_clear_mask, drvdata->base);
> - edac_device_handle_ce(dci, 0, 0, drvdata->edac_dev_name);
> + edac_device_handle_ce(dci, 1, 0, 0, drvdata->edac_dev_name);
> ret_value = IRQ_HANDLED;
> } else if (irq == drvdata->db_irq) {
> if (priv->ue_clear_mask)
> writel(priv->ue_clear_mask, drvdata->base);
> - edac_device_handle_ue(dci, 0, 0, drvdata->edac_dev_name);
> + edac_device_handle_ue(dci, 1, 0, 0, drvdata->edac_dev_name);
> panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
> ret_value = IRQ_HANDLED;
> } else {
> @@ -919,13 +919,15 @@ static irqreturn_t __maybe_unused altr_edac_a10_ecc_irq(int irq, void *dev_id)
> if (irq == dci->sb_irq) {
> writel(ALTR_A10_ECC_SERRPENA,
> base + ALTR_A10_ECC_INTSTAT_OFST);
> - edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
> + edac_device_handle_ce(dci->edac_dev, 1, 0, 0,
> + dci->edac_dev_name);
>
> return IRQ_HANDLED;
> } else if (irq == dci->db_irq) {
> writel(ALTR_A10_ECC_DERRPENA,
> base + ALTR_A10_ECC_INTSTAT_OFST);
> - edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
> + edac_device_handle_ue(dci->edac_dev, 1, 0, 0,
> + dci->edac_dev_name);
> if (dci->data->panic)
> panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
>
> @@ -1308,14 +1310,16 @@ static irqreturn_t altr_edac_a10_l2_irq(int irq, void *dev_id)
> regmap_write(dci->edac->ecc_mgr_map,
> A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
> A10_SYSGMR_MPU_CLEAR_L2_ECC_SB);
> - edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
> + edac_device_handle_ce(dci->edac_dev, 1, 0, 0,
> + dci->edac_dev_name);
>
> return IRQ_HANDLED;
> } else if (irq == dci->db_irq) {
> regmap_write(dci->edac->ecc_mgr_map,
> A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
> A10_SYSGMR_MPU_CLEAR_L2_ECC_MB);
> - edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
> + edac_device_handle_ue(dci->edac_dev, 1, 0, 0,
> + dci->edac_dev_name);
> panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
>
> return IRQ_HANDLED;
> @@ -1652,12 +1656,12 @@ static irqreturn_t altr_edac_a10_ecc_irq_portb(int irq, void *dev_id)
> if (irq == ad->sb_irq) {
> writel(priv->ce_clear_mask,
> base + ALTR_A10_ECC_INTSTAT_OFST);
> - edac_device_handle_ce(ad->edac_dev, 0, 0, ad->edac_dev_name);
> + edac_device_handle_ce(ad->edac_dev, 1, 0, 0, ad->edac_dev_name);
> return IRQ_HANDLED;
> } else if (irq == ad->db_irq) {
> writel(priv->ue_clear_mask,
> base + ALTR_A10_ECC_INTSTAT_OFST);
> - edac_device_handle_ue(ad->edac_dev, 0, 0, ad->edac_dev_name);
> + edac_device_handle_ue(ad->edac_dev, 1, 0, 0, ad->edac_dev_name);
> return IRQ_HANDLED;
> }
>
> diff --git a/drivers/edac/amd8111_edac.c b/drivers/edac/amd8111_edac.c
> index b5786cf..e595fab 100644
> --- a/drivers/edac/amd8111_edac.c
> +++ b/drivers/edac/amd8111_edac.c
> @@ -303,7 +303,7 @@ static void amd8111_lpc_bridge_check(struct edac_device_ctl_info *edac_dev)
> val8 |= IO_CTRL_1_CLEAR_MASK;
> edac_pci_write_byte(dev, REG_IO_CTRL_1, val8);
>
> - edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
> + edac_device_handle_ue(edac_dev, 1, 0, 0, edac_dev->ctl_name);
> }
>
> if (at_compat_reg_broken == 0) {
> @@ -315,8 +315,8 @@ static void amd8111_lpc_bridge_check(struct edac_device_ctl_info *edac_dev)
> out8 |= AT_COMPAT_CLRIOCHK;
> if (out8 > 0) {
> __do_outb(out8, REG_AT_COMPAT);
> - edac_device_handle_ue(edac_dev, 0, 0,
> - edac_dev->ctl_name);
> + edac_device_handle_ue(edac_dev, 1, 0, 0,
> + edac_dev->ctl_name);
> }
> }
> }
> diff --git a/drivers/edac/cpc925_edac.c b/drivers/edac/cpc925_edac.c
> index 3c0881a..eb74865 100644
> --- a/drivers/edac/cpc925_edac.c
> +++ b/drivers/edac/cpc925_edac.c
> @@ -682,7 +682,7 @@ static void cpc925_cpu_check(struct edac_device_ctl_info *edac_dev)
> cpc925_printk(KERN_INFO, "APIMASK 0x%08x\n", apimask);
> cpc925_printk(KERN_INFO, "APIEXCP 0x%08x\n", apiexcp);
>
> - edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
> + edac_device_handle_ue(edac_dev, 1, 0, 0, edac_dev->ctl_name);
> }
>
> /******************** HT Link err device****************************/
> @@ -756,7 +756,7 @@ static void cpc925_htlink_check(struct edac_device_ctl_info *edac_dev)
> __raw_writel(HT_LINKERR_DETECTED,
> dev_info->vbase + REG_LINKERR_OFFSET);
>
> - edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
> + edac_device_handle_ce(edac_dev, 1, 0, 0, edac_dev->ctl_name);
> }
>
> static struct cpc925_dev_info cpc925_devs[] = {
> diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
> index 65cf2b9..d1de296 100644
> --- a/drivers/edac/edac_device.c
> +++ b/drivers/edac/edac_device.c
> @@ -556,7 +556,8 @@ static inline int edac_device_get_panic_on_ue(struct edac_device_ctl_info
> }
>
> void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
> - int inst_nr, int block_nr, const char *msg)
> + u16 error_count, int inst_nr, int block_nr,
> + const char *msg)
> {
> struct edac_device_instance *instance;
> struct edac_device_block *block = NULL;
> @@ -582,12 +583,12 @@ void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
>
> if (instance->nr_blocks > 0) {
> block = instance->blocks + block_nr;
> - block->counters.ce_count++;
> + block->counters.ce_count += error_count;
> }
>
> /* Propagate the count up the 'totals' tree */
> - instance->counters.ce_count++;
> - edac_dev->counters.ce_count++;
> + instance->counters.ce_count += error_count;
> + edac_dev->counters.ce_count += error_count;
>
> if (edac_device_get_log_ce(edac_dev))
> edac_device_printk(edac_dev, KERN_WARNING,
> @@ -598,7 +599,8 @@ void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
> EXPORT_SYMBOL_GPL(edac_device_handle_ce);
>
> void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
> - int inst_nr, int block_nr, const char *msg)
> + u16 error_count, int inst_nr, int block_nr,
> + const char *msg)
> {
> struct edac_device_instance *instance;
> struct edac_device_block *block = NULL;
> @@ -624,12 +626,12 @@ void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
>
> if (instance->nr_blocks > 0) {
> block = instance->blocks + block_nr;
> - block->counters.ue_count++;
> + block->counters.ue_count += error_count;
> }
>
> /* Propagate the count up the 'totals' tree */
> - instance->counters.ue_count++;
> - edac_dev->counters.ue_count++;
> + instance->counters.ue_count += error_count;
> + edac_dev->counters.ue_count += error_count;

Patch itself looks a good idea, but maybe it should rise a WARN()
if error_count == 0.

That applies for both CE and UE error logic.

Thanks,
Mauro

Next message: Douglas Anderson: "[PATCH] kgdboc: disable the console lock when in kgdb"
Previous message: Logan Gunthorpe: "Re: [PATCH v6 02/16] chardev: introduce cdev_get_by_path()"
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