We do not need to calculate the offset in the mc's dimm array, let's just store the index in struct dimm_info and we can get rid of this macro.
Signed-off-by: Robert Richter <[email protected]> --- drivers/edac/edac_mc.c | 13 ++++-------- drivers/edac/edac_mc_sysfs.c | 20 ++++-------------- include/linux/edac.h | 41 ------------------------------------ 3 files changed, 8 insertions(+), 66 deletions(-) diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index c959e8b1643c..c44bc83e8502 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -318,7 +318,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num, unsigned size, tot_dimms = 1, count = 1; unsigned tot_csrows = 1, tot_channels = 1, tot_errcount = 0; void *pvt, *p, *ptr = NULL; - int i, j, row, chn, n, len, off; + int idx, i, j, row, chn, n, len; bool per_rank = false; BUG_ON(n_layers > EDAC_MAX_LAYERS || n_layers == 0); @@ -426,20 +426,15 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num, memset(&pos, 0, sizeof(pos)); row = 0; chn = 0; - for (i = 0; i < tot_dimms; i++) { + for (idx = 0; idx < tot_dimms; idx++) { chan = mci->csrows[row]->channels[chn]; - off = EDAC_DIMM_OFF(layer, n_layers, pos[0], pos[1], pos[2]); - if (off < 0 || off >= tot_dimms) { - edac_mc_printk(mci, KERN_ERR, "EDAC core bug: EDAC_DIMM_OFF is trying to do an illegal data access\n"); - goto error; - } dimm = kzalloc(sizeof(**mci->dimms), GFP_KERNEL); if (!dimm) goto error; - mci->dimms[off] = dimm; + mci->dimms[idx] = dimm; dimm->mci = mci; - dimm->idx = off; + dimm->idx = idx; /* * Copy DIMM location and initialize it. diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 29dd9719f82f..a69e99206a6f 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -559,14 +559,8 @@ static ssize_t dimmdev_ce_count_show(struct device *dev, { struct dimm_info *dimm = to_dimm(dev); u32 count; - int off; - - off = EDAC_DIMM_OFF(dimm->mci->layers, - dimm->mci->n_layers, - dimm->location[0], - dimm->location[1], - dimm->location[2]); - count = dimm->mci->ce_per_layer[dimm->mci->n_layers-1][off]; + + count = dimm->mci->ce_per_layer[dimm->mci->n_layers-1][dimm->idx]; return sprintf(data, "%u\n", count); } @@ -576,14 +570,8 @@ static ssize_t dimmdev_ue_count_show(struct device *dev, { struct dimm_info *dimm = to_dimm(dev); u32 count; - int off; - - off = EDAC_DIMM_OFF(dimm->mci->layers, - dimm->mci->n_layers, - dimm->location[0], - dimm->location[1], - dimm->location[2]); - count = dimm->mci->ue_per_layer[dimm->mci->n_layers-1][off]; + + count = dimm->mci->ue_per_layer[dimm->mci->n_layers-1][dimm->idx]; return sprintf(data, "%u\n", count); } diff --git a/include/linux/edac.h b/include/linux/edac.h index 1367a3fc544f..2ee9b8598ae0 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -362,47 +362,6 @@ struct edac_mc_layer { */ #define EDAC_MAX_LAYERS 3 -/** - * EDAC_DIMM_OFF - Macro responsible to get a pointer offset inside a pointer - * array for the element given by [layer0,layer1,layer2] - * position - * - * @layers: a struct edac_mc_layer array, describing how many elements - * were allocated for each layer - * @nlayers: Number of layers at the @layers array - * @layer0: layer0 position - * @layer1: layer1 position. Unused if n_layers < 2 - * @layer2: layer2 position. Unused if n_layers < 3 - * - * For 1 layer, this macro returns "var[layer0] - var"; - * - * For 2 layers, this macro is similar to allocate a bi-dimensional array - * and to return "var[layer0][layer1] - var"; - * - * For 3 layers, this macro is similar to allocate a tri-dimensional array - * and to return "var[layer0][layer1][layer2] - var". - * - * A loop could be used here to make it more generic, but, as we only have - * 3 layers, this is a little faster. - * - * By design, layers can never be 0 or more than 3. If that ever happens, - * a NULL is returned, causing an OOPS during the memory allocation routine, - * with would point to the developer that he's doing something wrong. - */ -#define EDAC_DIMM_OFF(layers, nlayers, layer0, layer1, layer2) ({ \ - int __i; \ - if ((nlayers) == 1) \ - __i = layer0; \ - else if ((nlayers) == 2) \ - __i = (layer1) + ((layers[1]).size * (layer0)); \ - else if ((nlayers) == 3) \ - __i = (layer2) + ((layers[2]).size * ((layer1) + \ - ((layers[1]).size * (layer0)))); \ - else \ - __i = -EINVAL; \ - __i; \ -}) - struct dimm_info { struct device dev; -- 2.20.1
