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Thu, 23 Jan 2020 09:02:50 +0000 Received: from MN2PR18MB3408.namprd18.prod.outlook.com ([fe80::b96d:5663:6402:82ea]) by MN2PR18MB3408.namprd18.prod.outlook.com ([fe80::b96d:5663:6402:82ea%7]) with mapi id 15.20.2644.028; Thu, 23 Jan 2020 09:02:50 +0000 Received: from rric.localdomain (31.208.96.227) by HE1PR0902CA0010.eurprd09.prod.outlook.com (2603:10a6:3:e5::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2644.20 via Frontend Transport; Thu, 23 Jan 2020 09:02:48 +0000 From: Robert Richter To: Borislav Petkov , Mauro Carvalho Chehab , Tony Luck CC: James Morse , Aristeu Rozanski , Robert Richter , "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Mauro Carvalho Chehab Subject: [PATCH v3 01/10] EDAC/mc: Split edac_mc_alloc() into smaller functions Thread-Topic: [PATCH v3 01/10] EDAC/mc: Split edac_mc_alloc() into smaller functions Thread-Index: AQHV0cvj3aBJvZTSoUaEEl52GdoWtA== Date: Thu, 23 Jan 2020 09:02:49 +0000 Message-ID: <20200123090210.26933-2-rrichter@marvell.com> References: <20200123090210.26933-1-rrichter@marvell.com> In-Reply-To: <20200123090210.26933-1-rrichter@marvell.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HE1PR0902CA0010.eurprd09.prod.outlook.com (2603:10a6:3:e5::20) 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: a00f06ba-074a-4c51-80e0-08d79fe305a0 x-ms-traffictypediagnostic: MN2PR18MB3247: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:1923; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: a00f06ba-074a-4c51-80e0-08d79fe305a0 X-MS-Exchange-CrossTenant-originalarrivaltime: 23 Jan 2020 09:02:49.8680 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: LuUNTksxbCVsFP0yqMYkACKC4uyz/FFK2DlpgCYjbPAmRx/Gw1aE+CZKwNSk2RIbHLV+XHsRtA9l1luIpvOX6Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR18MB3247 X-OriginatorOrg: marvell.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-22_08:2020-01-22,2020-01-22 signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org edac_mc_alloc() is huge. Factor out code by moving it to the two new functions edac_mc_alloc_csrows() and edac_mc_alloc_dimms(). Do not move code yet for better review. Signed-off-by: Robert Richter Reviewed-by: Mauro Carvalho Chehab Acked-by: Aristeu Rozanski --- drivers/edac/edac_mc.c | 105 +++++++++++++++++++++++++++-------------- 1 file changed, 70 insertions(+), 35 deletions(-) diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index 058efcd9032e..d71006a4f07b 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -311,6 +311,9 @@ static void mci_release(struct device *dev) kfree(mci); } =20 +static int edac_mc_alloc_csrows(struct mem_ctl_info *mci); +static int edac_mc_alloc_dimms(struct mem_ctl_info *mci); + struct mem_ctl_info *edac_mc_alloc(unsigned int mc_num, unsigned int n_layers, struct edac_mc_layer *layers, @@ -318,15 +321,11 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_nu= m, { struct mem_ctl_info *mci; struct edac_mc_layer *layer; - 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 =3D 1, count =3D 1; unsigned int tot_csrows =3D 1, tot_channels =3D 1, tot_errcount =3D 0; - void *pvt, *p, *ptr =3D NULL; - int i, j, row, chn, n, len; + void *pvt, *ptr =3D NULL; + int i; bool per_rank =3D false; =20 if (WARN_ON(n_layers > EDAC_MAX_LAYERS || n_layers =3D=3D 0)) @@ -401,16 +400,43 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_nu= m, mci->num_cschannel =3D tot_channels; mci->csbased =3D per_rank; =20 + if (edac_mc_alloc_csrows(mci)) + goto error; + + if (edac_mc_alloc_dimms(mci)) + goto error; + + mci->op_state =3D OP_ALLOC; + + return mci; + +error: + _edac_mc_free(mci); + + return NULL; +} +EXPORT_SYMBOL_GPL(edac_mc_alloc); + +static int edac_mc_alloc_csrows(struct mem_ctl_info *mci) +{ + unsigned int tot_csrows =3D mci->nr_csrows; + unsigned int tot_channels =3D mci->num_cschannel; + unsigned int row, chn; + /* * Alocate and fill the csrow/channels structs */ mci->csrows =3D kcalloc(tot_csrows, sizeof(*mci->csrows), GFP_KERNEL); if (!mci->csrows) - goto error; + return -ENOMEM; + for (row =3D 0; row < tot_csrows; row++) { + struct csrow_info *csr; + csr =3D kzalloc(sizeof(**mci->csrows), GFP_KERNEL); if (!csr) - goto error; + return -ENOMEM; + mci->csrows[row] =3D csr; csr->csrow_idx =3D row; csr->mci =3D mci; @@ -418,34 +444,51 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_nu= m, csr->channels =3D kcalloc(tot_channels, sizeof(*csr->channels), GFP_KERNEL); if (!csr->channels) - goto error; + return -ENOMEM; =20 for (chn =3D 0; chn < tot_channels; chn++) { + struct rank_info *chan; + chan =3D kzalloc(sizeof(**csr->channels), GFP_KERNEL); if (!chan) - goto error; + return -ENOMEM; + csr->channels[chn] =3D chan; chan->chan_idx =3D chn; chan->csrow =3D csr; } } =20 + return 0; +} + +static int edac_mc_alloc_dimms(struct mem_ctl_info *mci) +{ + void *p; + unsigned int pos[EDAC_MAX_LAYERS]; + unsigned int row, chn, idx; + int layer; + /* * Allocate and fill the dimm structs */ - mci->dimms =3D kcalloc(tot_dimms, sizeof(*mci->dimms), GFP_KERNEL); + mci->dimms =3D kcalloc(mci->tot_dimms, sizeof(*mci->dimms), GFP_KERNEL); if (!mci->dimms) - goto error; + return -ENOMEM; =20 memset(&pos, 0, sizeof(pos)); row =3D 0; chn =3D 0; - for (idx =3D 0; idx < tot_dimms; idx++) { + for (idx =3D 0; idx < mci->tot_dimms; idx++) { + struct dimm_info *dimm; + struct rank_info *chan; + int n, len; + chan =3D mci->csrows[row]->channels[chn]; =20 dimm =3D kzalloc(sizeof(**mci->dimms), GFP_KERNEL); if (!dimm) - goto error; + return -ENOMEM; mci->dimms[idx] =3D dimm; dimm->mci =3D mci; dimm->idx =3D idx; @@ -455,16 +498,16 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_nu= m, */ len =3D sizeof(dimm->label); p =3D dimm->label; - n =3D snprintf(p, len, "mc#%u", mc_num); + n =3D snprintf(p, len, "mc#%u", mci->mc_idx); p +=3D n; len -=3D n; - for (j =3D 0; j < n_layers; j++) { + for (layer =3D 0; layer < mci->n_layers; layer++) { n =3D snprintf(p, len, "%s#%u", - edac_layer_name[layers[j].type], - pos[j]); + edac_layer_name[mci->layers[layer].type], + pos[layer]); p +=3D n; len -=3D n; - dimm->location[j] =3D pos[j]; + dimm->location[layer] =3D pos[layer]; =20 if (len <=3D 0) break; @@ -476,39 +519,31 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_nu= m, dimm->cschannel =3D chn; =20 /* Increment csrow location */ - if (layers[0].is_virt_csrow) { + if (mci->layers[0].is_virt_csrow) { chn++; - if (chn =3D=3D tot_channels) { + if (chn =3D=3D mci->num_cschannel) { chn =3D 0; row++; } } else { row++; - if (row =3D=3D tot_csrows) { + if (row =3D=3D mci->nr_csrows) { row =3D 0; chn++; } } =20 /* Increment dimm location */ - for (j =3D n_layers - 1; j >=3D 0; j--) { - pos[j]++; - if (pos[j] < layers[j].size) + for (layer =3D mci->n_layers - 1; layer >=3D 0; layer--) { + pos[layer]++; + if (pos[layer] < mci->layers[layer].size) break; - pos[j] =3D 0; + pos[layer] =3D 0; } } =20 - mci->op_state =3D OP_ALLOC; - - return mci; - -error: - _edac_mc_free(mci); - - return NULL; + return 0; } -EXPORT_SYMBOL_GPL(edac_mc_alloc); =20 void edac_mc_free(struct mem_ctl_info *mci) { --=20 2.20.1