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Wed, 6 Nov 2019 09:33:32 +0000 Received: from MN2PR18MB3408.namprd18.prod.outlook.com ([fe80::c4a:cf3c:f530:fba6]) by MN2PR18MB3408.namprd18.prod.outlook.com ([fe80::c4a:cf3c:f530:fba6%6]) with mapi id 15.20.2430.020; Wed, 6 Nov 2019 09:33:32 +0000 From: Robert Richter To: Borislav Petkov , Mauro Carvalho Chehab , Tony Luck CC: James Morse , Robert Richter , "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH v2 14/20] EDAC, mc: Remove per layer counters Thread-Topic: [PATCH v2 14/20] EDAC, mc: Remove per layer counters Thread-Index: AQHVlIVBBrxvjhXd+UiTNn0fviO3ow== Date: Wed, 6 Nov 2019 09:33:32 +0000 Message-ID: <20191106093239.25517-15-rrichter@marvell.com> References: <20191106093239.25517-1-rrichter@marvell.com> In-Reply-To: <20191106093239.25517-1-rrichter@marvell.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HE1PR05CA0287.eurprd05.prod.outlook.com (2603:10a6:7:93::18) To MN2PR18MB3408.namprd18.prod.outlook.com (2603:10b6:208:165::10) x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.20.1 x-originating-ip: [31.208.96.227] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 9c47f5de-b017-4b69-2301-08d7629c63b6 x-ms-traffictypediagnostic: MN2PR18MB3165: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:2582; 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These unused counters only add complexity, remove them. The error counter values are directly stored in struct dimm_info now. Signed-off-by: Robert Richter --- drivers/edac/edac_mc.c | 106 ++++++++++++----------------------- drivers/edac/edac_mc_sysfs.c | 20 +++---- drivers/edac/ghes_edac.c | 5 +- include/linux/edac.h | 7 +-- 4 files changed, 47 insertions(+), 91 deletions(-) diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index b6032f51338e..dfc17c565d8f 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -315,12 +315,11 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_num, struct csrow_info *csr; struct rank_info *chan; struct dimm_info *dimm; - u32 *ce_per_layer[EDAC_MAX_LAYERS], *ue_per_layer[EDAC_MAX_LAYERS]; unsigned int pos[EDAC_MAX_LAYERS]; - unsigned int idx, size, tot_dimms = 1, count = 1; - unsigned int tot_csrows = 1, tot_channels = 1, tot_errcount = 0; + unsigned int idx, size, tot_dimms = 1; + unsigned int tot_csrows = 1, tot_channels = 1; void *pvt, *p, *ptr = NULL; - int i, j, row, chn, n, len; + int j, row, chn, n, len; bool per_rank = false; if (WARN_ON(n_layers > EDAC_MAX_LAYERS || n_layers == 0)) @@ -346,19 +345,10 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_num, * stringent as what the compiler would provide if we could simply * hardcode everything into a single struct. */ - mci = edac_align_ptr(&ptr, sizeof(*mci), 1); - layer = edac_align_ptr(&ptr, sizeof(*layer), n_layers); - for (i = 0; i < n_layers; i++) { - count *= layers[i].size; - edac_dbg(4, "errcount layer %d size %d\n", i, count); - ce_per_layer[i] = edac_align_ptr(&ptr, sizeof(u32), count); - ue_per_layer[i] = edac_align_ptr(&ptr, sizeof(u32), count); - tot_errcount += 2 * count; - } - - edac_dbg(4, "allocating %d error counters\n", tot_errcount); - pvt = edac_align_ptr(&ptr, sz_pvt, 1); - size = ((unsigned long)pvt) + sz_pvt; + mci = edac_align_ptr(&ptr, sizeof(*mci), 1); + layer = edac_align_ptr(&ptr, sizeof(*layer), n_layers); + pvt = edac_align_ptr(&ptr, sz_pvt, 1); + size = ((unsigned long)pvt) + sz_pvt; edac_dbg(1, "allocating %u bytes for mci data (%d %s, %d csrows/channels)\n", size, @@ -374,10 +364,6 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_num, * rather than an imaginary chunk of memory located at address 0. */ layer = (struct edac_mc_layer *)(((char *)mci) + ((unsigned long)layer)); - for (i = 0; i < n_layers; i++) { - mci->ce_per_layer[i] = (u32 *)((char *)mci + ((unsigned long)ce_per_layer[i])); - mci->ue_per_layer[i] = (u32 *)((char *)mci + ((unsigned long)ue_per_layer[i])); - } pvt = sz_pvt ? (((char *)mci) + ((unsigned long)pvt)) : NULL; /* setup index and various internal pointers */ @@ -908,53 +894,31 @@ const char *edac_layer_name[] = { EXPORT_SYMBOL_GPL(edac_layer_name); static void edac_inc_ce_error(struct mem_ctl_info *mci, - bool enable_per_layer_report, const int pos[EDAC_MAX_LAYERS], const u16 count) { - int i, index = 0; + struct dimm_info *dimm = edac_get_dimm(mci, pos[0], pos[1], pos[2]); mci->ce_mc += count; - if (!enable_per_layer_report) { + if (dimm) + dimm->ce_count += count; + else mci->ce_noinfo_count += count; - return; - } - - for (i = 0; i < mci->n_layers; i++) { - if (pos[i] < 0) - break; - index += pos[i]; - mci->ce_per_layer[i][index] += count; - - if (i < mci->n_layers - 1) - index *= mci->layers[i + 1].size; - } } static void edac_inc_ue_error(struct mem_ctl_info *mci, - bool enable_per_layer_report, const int pos[EDAC_MAX_LAYERS], const u16 count) { - int i, index = 0; + struct dimm_info *dimm = edac_get_dimm(mci, pos[0], pos[1], pos[2]); mci->ue_mc += count; - if (!enable_per_layer_report) { + if (dimm) + dimm->ue_count += count; + else mci->ue_noinfo_count += count; - return; - } - - for (i = 0; i < mci->n_layers; i++) { - if (pos[i] < 0) - break; - index += pos[i]; - mci->ue_per_layer[i][index] += count; - - if (i < mci->n_layers - 1) - index *= mci->layers[i + 1].size; - } } static void edac_ce_error(struct mem_ctl_info *mci, @@ -965,7 +929,6 @@ static void edac_ce_error(struct mem_ctl_info *mci, const char *label, const char *detail, const char *other_detail, - const bool enable_per_layer_report, const unsigned long page_frame_number, const unsigned long offset_in_page, long grain) @@ -988,7 +951,7 @@ static void edac_ce_error(struct mem_ctl_info *mci, error_count, msg, msg_aux, label, location, detail); } - edac_inc_ce_error(mci, enable_per_layer_report, pos, error_count); + edac_inc_ce_error(mci, pos, error_count); if (mci->scrub_mode == SCRUB_SW_SRC) { /* @@ -1018,8 +981,7 @@ static void edac_ue_error(struct mem_ctl_info *mci, const char *location, const char *label, const char *detail, - const char *other_detail, - const bool enable_per_layer_report) + const char *other_detail) { char *msg_aux = ""; @@ -1048,7 +1010,7 @@ static void edac_ue_error(struct mem_ctl_info *mci, msg, msg_aux, label, location, detail); } - edac_inc_ue_error(mci, enable_per_layer_report, pos, error_count); + edac_inc_ue_error(mci, pos, error_count); } void edac_raw_mc_handle_error(const enum hw_event_mc_err_type type, @@ -1079,16 +1041,16 @@ void edac_raw_mc_handle_error(const enum hw_event_mc_err_type type, "page:0x%lx offset:0x%lx grain:%ld syndrome:0x%lx", e->page_frame_number, e->offset_in_page, e->grain, e->syndrome); - edac_ce_error(mci, e->error_count, pos, e->msg, e->location, e->label, - detail, e->other_detail, e->enable_per_layer_report, + edac_ce_error(mci, e->error_count, pos, e->msg, e->location, + e->label, detail, e->other_detail, e->page_frame_number, e->offset_in_page, e->grain); } else { snprintf(detail, sizeof(detail), "page:0x%lx offset:0x%lx grain:%ld", e->page_frame_number, e->offset_in_page, e->grain); - edac_ue_error(mci, e->error_count, pos, e->msg, e->location, e->label, - detail, e->other_detail, e->enable_per_layer_report); + edac_ue_error(mci, e->error_count, pos, e->msg, e->location, + e->label, detail, e->other_detail); } @@ -1113,6 +1075,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, int pos[EDAC_MAX_LAYERS] = { top_layer, mid_layer, low_layer }; int i, n_labels = 0; struct edac_raw_error_desc *e = &mci->error_desc; + bool any_memory = true; edac_dbg(3, "MC%d\n", mci->mc_idx); @@ -1130,9 +1093,9 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, /* * Check if the event report is consistent and if the memory - * location is known. If it is known, enable_per_layer_report will be - * true, the DIMM(s) label info will be filled and the per-layer - * error counters will be incremented. + * location is known. If it is known, the DIMM(s) label info + * will be filled and the DIMM's error counters will be + * incremented. */ for (i = 0; i < mci->n_layers; i++) { if (pos[i] >= (int)mci->layers[i].size) { @@ -1150,7 +1113,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, pos[i] = -1; } if (pos[i] >= 0) - e->enable_per_layer_report = true; + any_memory = false; } /* @@ -1180,16 +1143,17 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, e->grain = dimm->grain; /* - * If the error is memory-controller wide, there's no need to - * seek for the affected DIMMs because the whole - * channel/memory controller/... may be affected. - * Also, don't show errors for empty DIMM slots. + * If the error is memory-controller wide, there's no + * need to seek for the affected DIMMs because the + * whole channel/memory controller/... may be + * affected. Also, don't show errors for empty DIMM + * slots. */ - if (!e->enable_per_layer_report || !dimm->nr_pages) + if (any_memory || !dimm->nr_pages) continue; if (n_labels >= EDAC_MAX_LABELS) { - e->enable_per_layer_report = false; + any_memory = true; break; } n_labels++; @@ -1218,7 +1182,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, chan = -2; } - if (!e->enable_per_layer_report) { + if (any_memory) { strcpy(e->label, "any memory"); } else { edac_dbg(4, "csrow/channel to increment: (%d,%d)\n", row, chan); diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 0367554e7437..8682df2f7f4f 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -556,10 +556,8 @@ static ssize_t dimmdev_ce_count_show(struct device *dev, char *data) { struct dimm_info *dimm = to_dimm(dev); - u32 count; - count = dimm->mci->ce_per_layer[dimm->mci->n_layers-1][dimm->idx]; - return sprintf(data, "%u\n", count); + return sprintf(data, "%u\n", dimm->ce_count); } static ssize_t dimmdev_ue_count_show(struct device *dev, @@ -567,10 +565,8 @@ static ssize_t dimmdev_ue_count_show(struct device *dev, char *data) { struct dimm_info *dimm = to_dimm(dev); - u32 count; - count = dimm->mci->ue_per_layer[dimm->mci->n_layers-1][dimm->idx]; - return sprintf(data, "%u\n", count); + return sprintf(data, "%u\n", dimm->ue_count); } /* dimm/rank attribute files */ @@ -666,7 +662,9 @@ static ssize_t mci_reset_counters_store(struct device *dev, const char *data, size_t count) { struct mem_ctl_info *mci = to_mci(dev); - int cnt, row, chan, i; + struct dimm_info *dimm; + int row, chan; + mci->ue_mc = 0; mci->ce_mc = 0; mci->ue_noinfo_count = 0; @@ -682,11 +680,9 @@ static ssize_t mci_reset_counters_store(struct device *dev, ri->channels[chan]->ce_count = 0; } - cnt = 1; - for (i = 0; i < mci->n_layers; i++) { - cnt *= mci->layers[i].size; - memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32)); - memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32)); + mci_for_each_dimm(mci, dimm) { + dimm->ue_count = 0; + dimm->ce_count = 0; } mci->start_time = jiffies; diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c index 725b9c58c028..74017da1f72c 100644 --- a/drivers/edac/ghes_edac.c +++ b/drivers/edac/ghes_edac.c @@ -356,11 +356,8 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err) mem_err->mem_dev_handle); index = get_dimm_smbios_index(mci, mem_err->mem_dev_handle); - if (index >= 0) { + if (index >= 0) e->top_layer = index; - e->enable_per_layer_report = true; - } - } if (p > e->location) *(p - 1) = '\0'; diff --git a/include/linux/edac.h b/include/linux/edac.h index 67be279abd11..4d9673954856 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -383,6 +383,9 @@ struct dimm_info { unsigned int csrow, cschannel; /* Points to the old API data */ u16 smbios_handle; /* Handle for SMBIOS type 17 */ + + u32 ce_count; + u32 ue_count; }; /** @@ -453,8 +456,6 @@ struct errcount_attribute_data { * @location: location of the error * @label: label of the affected DIMM(s) * @other_detail: other driver-specific detail about the error - * @enable_per_layer_report: if false, the error affects all layers - * (typically, a memory controller error) */ struct edac_raw_error_desc { char location[LOCATION_SIZE]; @@ -470,7 +471,6 @@ struct edac_raw_error_desc { unsigned long syndrome; const char *msg; const char *other_detail; - bool enable_per_layer_report; }; /* MEMORY controller information structure @@ -560,7 +560,6 @@ struct mem_ctl_info { */ u32 ce_noinfo_count, ue_noinfo_count; u32 ue_mc, ce_mc; - u32 *ce_per_layer[EDAC_MAX_LAYERS], *ue_per_layer[EDAC_MAX_LAYERS]; struct completion complete;