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Date: Fri, 11 Oct 2019 07:45:38 -0300
From: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
To: Robert Richter <rrichter@...vell.com>
Cc: Borislav Petkov <bp@...en8.de>, Tony Luck <tony.luck@...el.com>,
James Morse <james.morse@....com>,
"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 09/19] EDAC, mc: Reorder functions edac_mc_alloc*()
Em Thu, 10 Oct 2019 20:25:22 +0000
Robert Richter <rrichter@...vell.com> escreveu:
> Reorder the new created functions edac_mc_alloc_csrows() and
> edac_mc_alloc_dimms() and move them before edac_mc_alloc(). No further
> code changes.
>
> Signed-off-by: Robert Richter <rrichter@...vell.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
> ---
> drivers/edac/edac_mc.c | 171 ++++++++++++++++++++---------------------
> 1 file changed, 84 insertions(+), 87 deletions(-)
>
> diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
> index 0db504cb3419..6d880cf4d599 100644
> --- a/drivers/edac/edac_mc.c
> +++ b/drivers/edac/edac_mc.c
> @@ -305,93 +305,6 @@ static void _edac_mc_free(struct mem_ctl_info *mci)
> kfree(mci);
> }
>
> -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,
> - unsigned int sz_pvt)
> -{
> - struct mem_ctl_info *mci;
> - struct edac_mc_layer *layer;
> - unsigned int idx, size, tot_dimms = 1;
> - unsigned int tot_csrows = 1, tot_channels = 1;
> - void *pvt, *ptr = NULL;
> - bool per_rank = false;
> -
> - if (WARN_ON(n_layers > EDAC_MAX_LAYERS || n_layers == 0))
> - return NULL;
> -
> - /*
> - * Calculate the total amount of dimms and csrows/cschannels while
> - * in the old API emulation mode
> - */
> - for (idx = 0; idx < n_layers; idx++) {
> - tot_dimms *= layers[idx].size;
> - if (layers[idx].is_virt_csrow)
> - tot_csrows *= layers[idx].size;
> - else
> - tot_channels *= layers[idx].size;
> -
> - if (layers[idx].type == EDAC_MC_LAYER_CHIP_SELECT)
> - per_rank = true;
> - }
> -
> - /* Figure out the offsets of the various items from the start of an mc
> - * structure. We want the alignment of each item to be at least as
> - * 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);
> - 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,
> - tot_dimms,
> - per_rank ? "ranks" : "dimms",
> - tot_csrows * tot_channels);
> -
> - mci = kzalloc(size, GFP_KERNEL);
> - if (mci == NULL)
> - return NULL;
> -
> - /* Adjust pointers so they point within the memory we just allocated
> - * rather than an imaginary chunk of memory located at address 0.
> - */
> - layer = (struct edac_mc_layer *)(((char *)mci) + ((unsigned long)layer));
> - pvt = sz_pvt ? (((char *)mci) + ((unsigned long)pvt)) : NULL;
> -
> - /* setup index and various internal pointers */
> - mci->mc_idx = mc_num;
> - mci->tot_dimms = tot_dimms;
> - mci->pvt_info = pvt;
> - mci->n_layers = n_layers;
> - mci->layers = layer;
> - memcpy(mci->layers, layers, sizeof(*layer) * n_layers);
> - mci->nr_csrows = tot_csrows;
> - mci->num_cschannel = tot_channels;
> - mci->csbased = per_rank;
> -
> - if (edac_mc_alloc_csrows(mci))
> - goto error;
> -
> - if (edac_mc_alloc_dimms(mci))
> - goto error;
> -
> - mci->op_state = 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 = mci->nr_csrows;
> @@ -520,6 +433,90 @@ static int edac_mc_alloc_dimms(struct mem_ctl_info *mci)
> return 0;
> }
>
> +struct mem_ctl_info *edac_mc_alloc(unsigned int mc_num,
> + unsigned int n_layers,
> + struct edac_mc_layer *layers,
> + unsigned int sz_pvt)
> +{
> + struct mem_ctl_info *mci;
> + struct edac_mc_layer *layer;
> + unsigned int idx, size, tot_dimms = 1;
> + unsigned int tot_csrows = 1, tot_channels = 1;
> + void *pvt, *ptr = NULL;
> + bool per_rank = false;
> +
> + if (WARN_ON(n_layers > EDAC_MAX_LAYERS || n_layers == 0))
> + return NULL;
> +
> + /*
> + * Calculate the total amount of dimms and csrows/cschannels while
> + * in the old API emulation mode
> + */
> + for (idx = 0; idx < n_layers; idx++) {
> + tot_dimms *= layers[idx].size;
> + if (layers[idx].is_virt_csrow)
> + tot_csrows *= layers[idx].size;
> + else
> + tot_channels *= layers[idx].size;
> +
> + if (layers[idx].type == EDAC_MC_LAYER_CHIP_SELECT)
> + per_rank = true;
> + }
> +
> + /* Figure out the offsets of the various items from the start of an mc
> + * structure. We want the alignment of each item to be at least as
> + * 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);
> + 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,
> + tot_dimms,
> + per_rank ? "ranks" : "dimms",
> + tot_csrows * tot_channels);
> +
> + mci = kzalloc(size, GFP_KERNEL);
> + if (mci == NULL)
> + return NULL;
> +
> + /* Adjust pointers so they point within the memory we just allocated
> + * rather than an imaginary chunk of memory located at address 0.
> + */
> + layer = (struct edac_mc_layer *)(((char *)mci) + ((unsigned long)layer));
> + pvt = sz_pvt ? (((char *)mci) + ((unsigned long)pvt)) : NULL;
> +
> + /* setup index and various internal pointers */
> + mci->mc_idx = mc_num;
> + mci->tot_dimms = tot_dimms;
> + mci->pvt_info = pvt;
> + mci->n_layers = n_layers;
> + mci->layers = layer;
> + memcpy(mci->layers, layers, sizeof(*layer) * n_layers);
> + mci->nr_csrows = tot_csrows;
> + mci->num_cschannel = tot_channels;
> + mci->csbased = per_rank;
> +
> + if (edac_mc_alloc_csrows(mci))
> + goto error;
> +
> + if (edac_mc_alloc_dimms(mci))
> + goto error;
> +
> + mci->op_state = OP_ALLOC;
> +
> + return mci;
> +
> +error:
> + _edac_mc_free(mci);
> +
> + return NULL;
> +}
> +EXPORT_SYMBOL_GPL(edac_mc_alloc);
> +
> void edac_mc_free(struct mem_ctl_info *mci)
> {
> edac_dbg(1, "\n");
Thanks,
Mauro
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