From: Borislav Petkov <bp@amd64.org>
To: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Borislav Petkov <bp@amd64.org>,
Linux Edac Mailing List <linux-edac@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 01/13] edac: Create a dimm struct and move the labels into it
Date: Mon, 16 Apr 2012 13:02:22 +0200 [thread overview]
Message-ID: <20120416110222.GA308@aftab> (raw)
In-Reply-To: <4F8BDB3D.2020808@redhat.com>
On Mon, Apr 16, 2012 at 05:41:33AM -0300, Mauro Carvalho Chehab wrote:
> This is not a double loop.
But it is, actually.
Let's look at the code:
/* setup index and various internal pointers */
mci->mc_idx = edac_index;
mci->csrows = csi;
mci->dimms = dimm;
mci->pvt_info = pvt;
mci->nr_csrows = nr_csrows;
for (row = 0; row < nr_csrows; row++) { <-- A1
csrow = &csi[row];
csrow->csrow_idx = row;
csrow->mci = mci;
csrow->nr_channels = nr_chans;
chp = &chi[row * nr_chans];
csrow->channels = chp;
for (chn = 0; chn < nr_chans; chn++) { <-- B1
chan = &chp[chn];
chan->chan_idx = chn;
chan->csrow = csrow;
}
}
/*
* By default, assumes that a per-csrow arrangement will be used,
* as most drivers are based on such assumption.
*/
dimm = mci->dimms;
for (row = 0; row < mci->nr_csrows; row++) { <-- A2
for (chn = 0; chn < mci->csrows[row].nr_channels; chn++) { <-- B2
mci->csrows[row].channels[chn].dimm = dimm;
dimm->csrow = row;
dimm->csrow_channel = chn;
dimm++;
mci->nr_dimms++;
}
}
So the lines tagged with A1 and A2 iterate over the nr_csrows, while
lines tagged with B1 and B2 iterate over nr_chans. In B2, loop termination is
mci->csrows[row].nr_channels
which is assigned in the first loop above to
csrow->nr_channels = nr_chans
In B1, it is simply nr_chans.
So how about we merge those two:
...
dimm = mci->dimms;
for (row = 0; row < nr_csrows; row++) { <-- A1
csrow = &csi[row];
csrow->csrow_idx = row;
csrow->mci = mci;
csrow->nr_channels = nr_chans;
chp = &chi[row * nr_chans];
csrow->channels = chp;
for (chn = 0; chn < nr_chans; chn++) { <-- B1
chan = &chp[chn];
chan->chan_idx = chn;
chan->csrow = csrow;
/* second loop */
csrow->channels[chn].dimm = dimm;
dimm->csrow = row;
dimm->csrow_channel = chn;
dimm++;
mci->nr_dimms++;
}
}
So it is only 5 lines of code instead of another loop.
--
Regards/Gruss,
Boris.
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
GM: Alberto Bozzo
Reg: Dornach, Landkreis Muenchen
HRB Nr. 43632 WEEE Registernr: 129 19551
next prev parent reply other threads:[~2012-04-16 11:02 UTC|newest]
Thread overview: 161+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-29 16:45 [PATCH 00/13] Convert EDAC internal strutures to support all types of Memory Controllers Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 01/13] edac: Create a dimm struct and move the labels into it Mauro Carvalho Chehab
2012-03-30 10:50 ` Borislav Petkov
2012-03-30 13:26 ` Mauro Carvalho Chehab
2012-03-30 15:38 ` Borislav Petkov
2012-04-16 8:41 ` Mauro Carvalho Chehab
2012-04-16 11:02 ` Borislav Petkov [this message]
2012-04-16 11:44 ` Mauro Carvalho Chehab
2012-04-16 13:21 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 02/13] edac: move dimm properties to struct memset_info Mauro Carvalho Chehab
2012-03-30 13:10 ` Borislav Petkov
2012-03-30 13:22 ` Mauro Carvalho Chehab
2012-03-30 17:03 ` Borislav Petkov
2012-04-16 8:56 ` Mauro Carvalho Chehab
2012-04-16 13:31 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 03/13] edac: Don't initialize csrow's first_page & friends when not needed Mauro Carvalho Chehab
2012-04-02 12:33 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 04/13] edac: move nr_pages to dimm struct Mauro Carvalho Chehab
2012-04-02 13:18 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 05/13] edac: Fix core support for MC's that see DIMMS instead of ranks Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 06/13] edac: Initialize the dimm label with the known information Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 07/13] edac: Cleanup the logs for i7core and sb edac drivers Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 08/13] i5400_edac: improve debug messages to better represent the filled memory Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 09/13] events/hw_event: Create a Hardware Events Report Mecanism (HERM) Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 10/13] i5000_edac: Fix the logic that retrieves memory information Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 11/13] e752x_edac: provide more info about how DIMMS/ranks are mapped Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 12/13] edac: Rename the parent dev to pdev Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 13/13] edac: use Documentation-nano format for some data structs Mauro Carvalho Chehab
2012-03-29 20:46 ` [PATCH 00/13] Convert EDAC internal strutures to support all types of Memory Controllers Aristeu Rozanski Filho
2012-04-02 13:59 ` Borislav Petkov
2012-04-16 12:58 ` Mauro Carvalho Chehab
2012-04-16 14:06 ` Borislav Petkov
2012-04-16 20:12 ` [EDAC PATCH v13 0/7] Convert EDAC core to work with non-csrow-based memory controllers Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 1/7] edac: Create a dimm struct and move the labels into it Mauro Carvalho Chehab
2012-04-26 14:26 ` Borislav Petkov
2012-04-16 20:12 ` [EDAC PATCH v13 3/7] edac: Don't initialize csrow's first_page & friends when not needed Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 4/7] edac: move nr_pages to dimm struct Mauro Carvalho Chehab
2012-04-17 18:48 ` Borislav Petkov
2012-04-17 19:28 ` Mauro Carvalho Chehab
2012-04-17 21:40 ` Borislav Petkov
2012-04-18 12:58 ` Mauro Carvalho Chehab
2012-04-18 17:53 ` [PATCH] " Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 5/7] edac: rewrite edac_align_ptr() Mauro Carvalho Chehab
2012-04-18 14:06 ` Borislav Petkov
2012-04-18 15:25 ` Borislav Petkov
2012-04-18 18:15 ` Mauro Carvalho Chehab
2012-04-18 18:19 ` [PATCH] " Mauro Carvalho Chehab
2012-04-23 14:05 ` Borislav Petkov
2012-04-23 15:19 ` Mauro Carvalho Chehab
2012-04-23 15:26 ` Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 6/7] edac.h: Prepare to handle with generic layers Mauro Carvalho Chehab
2012-04-23 17:49 ` Borislav Petkov
2012-04-23 18:30 ` Mauro Carvalho Chehab
2012-04-23 18:56 ` Mauro Carvalho Chehab
2012-04-23 19:19 ` [PATCH] edac.h: Add generic layers for describing a memory location Mauro Carvalho Chehab
2012-04-23 20:07 ` Mauro Carvalho Chehab
2012-04-24 10:46 ` Borislav Petkov
2012-04-24 10:40 ` [EDAC PATCH v13 6/7] edac.h: Prepare to handle with generic layers Borislav Petkov
2012-04-24 11:46 ` Mauro Carvalho Chehab
2012-04-24 12:42 ` Mauro Carvalho Chehab
2012-04-24 12:49 ` [PATCH] edac.h: Add generic layers for describing a memory location Mauro Carvalho Chehab
2012-04-24 13:09 ` Borislav Petkov
2012-04-24 13:22 ` Mauro Carvalho Chehab
2012-04-24 13:38 ` Borislav Petkov
2012-04-24 16:39 ` Mauro Carvalho Chehab
2012-04-24 16:49 ` Borislav Petkov
2012-04-24 17:38 ` Mauro Carvalho Chehab
[not found] ` <1335291342-14922-1-git-send-email-mchehab@redhat.com>
2012-04-24 18:15 ` [PATCH EDACv16 2/2] amd64_edac: convert driver to use the new edac ABI Mauro Carvalho Chehab
2012-04-27 10:42 ` Mauro Carvalho Chehab
2012-04-27 13:33 ` [PATCH EDACv16 1/2] edac: Change internal representation to work with layers Borislav Petkov
2012-04-27 14:11 ` Joe Perches
2012-04-27 15:12 ` Borislav Petkov
2012-04-27 16:07 ` Mauro Carvalho Chehab
2012-04-28 8:52 ` Borislav Petkov
2012-04-28 20:38 ` Joe Perches
2012-04-29 14:25 ` Mauro Carvalho Chehab
2012-04-29 15:11 ` Mauro Carvalho Chehab
2012-04-29 16:03 ` Joe Perches
2012-04-29 17:18 ` Mauro Carvalho Chehab
2012-04-29 16:20 ` Mauro Carvalho Chehab
2012-04-29 16:43 ` Joe Perches
2012-04-29 17:39 ` Mauro Carvalho Chehab
2012-04-30 7:47 ` Borislav Petkov
2012-04-30 11:09 ` Mauro Carvalho Chehab
2012-04-30 11:15 ` Borislav Petkov
2012-04-30 11:46 ` Mauro Carvalho Chehab
2012-04-27 15:36 ` Mauro Carvalho Chehab
2012-04-28 9:05 ` Borislav Petkov
2012-04-29 13:49 ` Mauro Carvalho Chehab
2012-04-30 8:15 ` Borislav Petkov
2012-04-30 10:58 ` Mauro Carvalho Chehab
2012-04-30 11:11 ` Borislav Petkov
2012-04-30 11:45 ` Mauro Carvalho Chehab
2012-04-30 12:38 ` Borislav Petkov
2012-04-30 13:00 ` Mauro Carvalho Chehab
2012-04-30 13:53 ` Mauro Carvalho Chehab
2012-04-30 15:02 ` [PATCH v2] edac_mc: Cleanup per-dimm_info debug messages Mauro Carvalho Chehab
2012-04-30 15:10 ` Mauro Carvalho Chehab
2012-04-30 15:20 ` Borislav Petkov
2012-04-30 15:33 ` Mauro Carvalho Chehab
2012-04-30 16:16 ` Joe Perches
2012-04-30 16:47 ` Mauro Carvalho Chehab
2012-04-30 16:44 ` [PATCHv3] " Mauro Carvalho Chehab
2012-04-30 11:37 ` [PATCH EDACv16 1/2] edac: Change internal representation to work with layers Mauro Carvalho Chehab
2012-04-27 17:52 ` Mauro Carvalho Chehab
2012-04-28 9:16 ` Borislav Petkov
2012-04-28 17:07 ` Joe Perches
2012-04-29 14:02 ` Mauro Carvalho Chehab
2012-04-29 14:16 ` Mauro Carvalho Chehab
2012-04-30 7:59 ` Borislav Petkov
2012-04-30 11:23 ` Mauro Carvalho Chehab
2012-04-30 12:51 ` Borislav Petkov
2012-04-24 12:55 ` [EDAC PATCH v13 6/7] edac.h: Prepare to handle with generic layers Borislav Petkov
2012-04-24 13:11 ` Mauro Carvalho Chehab
2012-04-24 13:32 ` Borislav Petkov
2012-04-24 14:24 ` Mauro Carvalho Chehab
2012-04-24 16:27 ` Borislav Petkov
2012-04-24 17:24 ` Mauro Carvalho Chehab
2012-04-25 17:19 ` Borislav Petkov
2012-04-25 17:47 ` Mauro Carvalho Chehab
2012-04-25 18:32 ` Luck, Tony
2012-04-25 18:44 ` Mauro Carvalho Chehab
2012-04-26 14:11 ` Borislav Petkov
2012-04-26 14:25 ` Mauro Carvalho Chehab
2012-04-26 14:59 ` Mauro Carvalho Chehab
2012-04-25 17:55 ` Luck, Tony
2012-04-24 17:31 ` Luck, Tony
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 00/26] Use the new EDAC kernel ABI on drivers Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 01/26] amd64_edac: convert driver to use the new edac ABI Mauro Carvalho Chehab
2012-05-07 14:31 ` Borislav Petkov
2012-05-07 16:12 ` Mauro Carvalho Chehab
2012-05-07 16:17 ` Borislav Petkov
2012-05-07 16:59 ` Mauro Carvalho Chehab
2012-05-07 19:49 ` Borislav Petkov
2012-05-07 16:24 ` Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 02/26] amd76x_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 03/26] cell_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 04/26] cpc925_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 05/26] e752x_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 06/26] e7xxx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 07/26] i3000_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 08/26] i3200_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 09/26] i5000_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 10/26] i5100_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 11/26] i5400_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 12/26] i7300_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 13/26] i7core_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 14/26] i82443bxgx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 15/26] i82860_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 16/26] i82875p_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 17/26] i82975x_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 18/26] mpc85xx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 19/26] mv64x60_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 20/26] pasemi_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 21/26] ppc4xx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 22/26] r82600_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 23/26] sb_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 24/26] tile_edac: " Mauro Carvalho Chehab
2012-04-26 19:47 ` Chris Metcalf
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 25/26] x38_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 26/26] edac: Remove the legacy EDAC ABI Mauro Carvalho Chehab
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