| Message ID | 20191010202418.25098-4-rrichter@marvell.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | EDAC: Rework edac_mc and ghes drivers | expand |
Em Thu, 10 Oct 2019 20:25:10 +0000 Robert Richter <rrichter@marvell.com> escreveu: > Introduce the mci_for_each_dimm() iterator. It returns a pointer to a > struct dimm_info. This makes the declaration and use of an index > obsolete and avoids access to internal data of struct mci (direct > array access etc). > > Signed-off-by: Robert Richter <rrichter@marvell.com> Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> > --- > drivers/edac/edac_mc.c | 19 +++++++++++-------- > drivers/edac/edac_mc_sysfs.c | 29 ++++++++++++----------------- > drivers/edac/ghes_edac.c | 8 ++++---- > drivers/edac/i5100_edac.c | 13 +++++-------- > include/linux/edac.h | 7 +++++++ > 5 files changed, 39 insertions(+), 37 deletions(-) > > diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c > index 72088d49b03b..c5240bb4c6c0 100644 > --- a/drivers/edac/edac_mc.c > +++ b/drivers/edac/edac_mc.c > @@ -145,15 +145,18 @@ static void edac_mc_dump_channel(struct rank_info *chan) > edac_dbg(4, " channel->dimm = %p\n", chan->dimm); > } > > -static void edac_mc_dump_dimm(struct dimm_info *dimm, int number) > +static void edac_mc_dump_dimm(struct dimm_info *dimm) > { > char location[80]; > > + if (!dimm->nr_pages) > + return; > + > edac_dimm_info_location(dimm, location, sizeof(location)); > > edac_dbg(4, "%s%i: %smapped as virtual row %d, chan %d\n", > dimm->mci->csbased ? "rank" : "dimm", > - number, location, dimm->csrow, dimm->cschannel); > + dimm->idx, location, dimm->csrow, dimm->cschannel); > edac_dbg(4, " dimm = %p\n", dimm); > edac_dbg(4, " dimm->label = '%s'\n", dimm->label); > edac_dbg(4, " dimm->nr_pages = 0x%x\n", dimm->nr_pages); > @@ -702,6 +705,7 @@ EXPORT_SYMBOL_GPL(edac_get_owner); > int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci, > const struct attribute_group **groups) > { > + struct dimm_info *dimm; > int ret = -EINVAL; > edac_dbg(0, "\n"); > > @@ -726,9 +730,9 @@ int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci, > if (csrow->channels[j]->dimm->nr_pages) > edac_mc_dump_channel(csrow->channels[j]); > } > - for (i = 0; i < mci->tot_dimms; i++) > - if (mci->dimms[i]->nr_pages) > - edac_mc_dump_dimm(mci->dimms[i], i); > + > + mci_for_each_dimm(mci, dimm) > + edac_mc_dump_dimm(dimm); > } > #endif > mutex_lock(&mem_ctls_mutex); > @@ -1086,6 +1090,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, > const char *msg, > const char *other_detail) > { > + struct dimm_info *dimm; > char *p; > int row = -1, chan = -1; > int pos[EDAC_MAX_LAYERS] = { top_layer, mid_layer, low_layer }; > @@ -1146,9 +1151,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, > p = e->label; > *p = '\0'; > > - for (i = 0; i < mci->tot_dimms; i++) { > - struct dimm_info *dimm = mci->dimms[i]; > - > + mci_for_each_dimm(mci, dimm) { > if (top_layer >= 0 && top_layer != dimm->location[0]) > continue; > if (mid_layer >= 0 && mid_layer != dimm->location[1]) > diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c > index 91e4c8f155af..0367554e7437 100644 > --- a/drivers/edac/edac_mc_sysfs.c > +++ b/drivers/edac/edac_mc_sysfs.c > @@ -621,8 +621,7 @@ static const struct device_type dimm_attr_type = { > > /* Create a DIMM object under specifed memory controller device */ > static int edac_create_dimm_object(struct mem_ctl_info *mci, > - struct dimm_info *dimm, > - int index) > + struct dimm_info *dimm) > { > int err; > dimm->mci = mci; > @@ -632,9 +631,9 @@ static int edac_create_dimm_object(struct mem_ctl_info *mci, > > dimm->dev.parent = &mci->dev; > if (mci->csbased) > - dev_set_name(&dimm->dev, "rank%d", index); > + dev_set_name(&dimm->dev, "rank%d", dimm->idx); > else > - dev_set_name(&dimm->dev, "dimm%d", index); > + dev_set_name(&dimm->dev, "dimm%d", dimm->idx); > dev_set_drvdata(&dimm->dev, dimm); > pm_runtime_forbid(&mci->dev); > > @@ -916,7 +915,8 @@ static const struct device_type mci_attr_type = { > int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, > const struct attribute_group **groups) > { > - int i, err; > + struct dimm_info *dimm; > + int err; > > /* get the /sys/devices/system/edac subsys reference */ > mci->dev.type = &mci_attr_type; > @@ -940,13 +940,12 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, > /* > * Create the dimm/rank devices > */ > - for (i = 0; i < mci->tot_dimms; i++) { > - struct dimm_info *dimm = mci->dimms[i]; > + mci_for_each_dimm(mci, dimm) { > /* Only expose populated DIMMs */ > if (!dimm->nr_pages) > continue; > > - err = edac_create_dimm_object(mci, dimm, i); > + err = edac_create_dimm_object(mci, dimm); > if (err) > goto fail_unregister_dimm; > } > @@ -961,12 +960,9 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, > return 0; > > fail_unregister_dimm: > - for (i--; i >= 0; i--) { > - struct dimm_info *dimm = mci->dimms[i]; > - if (!dimm->nr_pages) > - continue; > - > - device_unregister(&dimm->dev); > + mci_for_each_dimm(mci, dimm) { > + if (device_is_registered(&dimm->dev)) > + device_unregister(&dimm->dev); > } > device_unregister(&mci->dev); > > @@ -978,7 +974,7 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, > */ > void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) > { > - int i; > + struct dimm_info *dimm; > > edac_dbg(0, "\n"); > > @@ -989,8 +985,7 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) > edac_delete_csrow_objects(mci); > #endif > > - for (i = 0; i < mci->tot_dimms; i++) { > - struct dimm_info *dimm = mci->dimms[i]; > + mci_for_each_dimm(mci, dimm) { > if (dimm->nr_pages == 0) > continue; > edac_dbg(1, "unregistering device %s\n", dev_name(&dimm->dev)); > diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c > index fb31e80dfe94..842080d7b33a 100644 > --- a/drivers/edac/ghes_edac.c > +++ b/drivers/edac/ghes_edac.c > @@ -82,11 +82,11 @@ static void ghes_edac_count_dimms(const struct dmi_header *dh, void *arg) > static int get_dimm_smbios_index(u16 handle) > { > struct mem_ctl_info *mci = ghes_pvt->mci; > - int i; > + struct dimm_info *dimm; > > - for (i = 0; i < mci->tot_dimms; i++) { > - if (mci->dimms[i]->smbios_handle == handle) > - return i; > + mci_for_each_dimm(mci, dimm) { > + if (dimm->smbios_handle == handle) > + return dimm->idx; > } > return -1; > } > diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c > index 134586753311..0ddc41e47a96 100644 > --- a/drivers/edac/i5100_edac.c > +++ b/drivers/edac/i5100_edac.c > @@ -846,20 +846,17 @@ static void i5100_init_interleaving(struct pci_dev *pdev, > > static void i5100_init_csrows(struct mem_ctl_info *mci) > { > - int i; > struct i5100_priv *priv = mci->pvt_info; > + struct dimm_info *dimm; > > - for (i = 0; i < mci->tot_dimms; i++) { > - struct dimm_info *dimm; > - const unsigned long npages = i5100_npages(mci, i); > - const unsigned int chan = i5100_csrow_to_chan(mci, i); > - const unsigned int rank = i5100_csrow_to_rank(mci, i); > + mci_for_each_dimm(mci, dimm) { > + const unsigned long npages = i5100_npages(mci, dimm->idx); > + const unsigned int chan = i5100_csrow_to_chan(mci, dimm->idx); > + const unsigned int rank = i5100_csrow_to_rank(mci, dimm->idx); > > if (!npages) > continue; > > - dimm = edac_get_dimm(mci, chan, rank, 0); > - > dimm->nr_pages = npages; > dimm->grain = 32; > dimm->dtype = (priv->mtr[chan][rank].width == 4) ? > diff --git a/include/linux/edac.h b/include/linux/edac.h > index 79c5564ee314..8beb6e834be9 100644 > --- a/include/linux/edac.h > +++ b/include/linux/edac.h > @@ -599,6 +599,13 @@ struct mem_ctl_info { > u16 fake_inject_count; > }; > > +#define mci_for_each_dimm(mci, dimm) \ > + for ((dimm) = (mci)->dimms[0]; \ > + (dimm); \ > + (dimm) = (dimm)->idx + 1 < (mci)->tot_dimms \ > + ? (mci)->dimms[(dimm)->idx + 1] \ > + : NULL) > + > /** > * edac_get_dimm_by_index - Get DIMM info from a memory controller > * given by an index Thanks, Mauro
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index 72088d49b03b..c5240bb4c6c0 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -145,15 +145,18 @@ static void edac_mc_dump_channel(struct rank_info *chan) edac_dbg(4, " channel->dimm = %p\n", chan->dimm); } -static void edac_mc_dump_dimm(struct dimm_info *dimm, int number) +static void edac_mc_dump_dimm(struct dimm_info *dimm) { char location[80]; + if (!dimm->nr_pages) + return; + edac_dimm_info_location(dimm, location, sizeof(location)); edac_dbg(4, "%s%i: %smapped as virtual row %d, chan %d\n", dimm->mci->csbased ? "rank" : "dimm", - number, location, dimm->csrow, dimm->cschannel); + dimm->idx, location, dimm->csrow, dimm->cschannel); edac_dbg(4, " dimm = %p\n", dimm); edac_dbg(4, " dimm->label = '%s'\n", dimm->label); edac_dbg(4, " dimm->nr_pages = 0x%x\n", dimm->nr_pages); @@ -702,6 +705,7 @@ EXPORT_SYMBOL_GPL(edac_get_owner); int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci, const struct attribute_group **groups) { + struct dimm_info *dimm; int ret = -EINVAL; edac_dbg(0, "\n"); @@ -726,9 +730,9 @@ int edac_mc_add_mc_with_groups(struct mem_ctl_info *mci, if (csrow->channels[j]->dimm->nr_pages) edac_mc_dump_channel(csrow->channels[j]); } - for (i = 0; i < mci->tot_dimms; i++) - if (mci->dimms[i]->nr_pages) - edac_mc_dump_dimm(mci->dimms[i], i); + + mci_for_each_dimm(mci, dimm) + edac_mc_dump_dimm(dimm); } #endif mutex_lock(&mem_ctls_mutex); @@ -1086,6 +1090,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, const char *msg, const char *other_detail) { + struct dimm_info *dimm; char *p; int row = -1, chan = -1; int pos[EDAC_MAX_LAYERS] = { top_layer, mid_layer, low_layer }; @@ -1146,9 +1151,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, p = e->label; *p = '\0'; - for (i = 0; i < mci->tot_dimms; i++) { - struct dimm_info *dimm = mci->dimms[i]; - + mci_for_each_dimm(mci, dimm) { if (top_layer >= 0 && top_layer != dimm->location[0]) continue; if (mid_layer >= 0 && mid_layer != dimm->location[1]) diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 91e4c8f155af..0367554e7437 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -621,8 +621,7 @@ static const struct device_type dimm_attr_type = { /* Create a DIMM object under specifed memory controller device */ static int edac_create_dimm_object(struct mem_ctl_info *mci, - struct dimm_info *dimm, - int index) + struct dimm_info *dimm) { int err; dimm->mci = mci; @@ -632,9 +631,9 @@ static int edac_create_dimm_object(struct mem_ctl_info *mci, dimm->dev.parent = &mci->dev; if (mci->csbased) - dev_set_name(&dimm->dev, "rank%d", index); + dev_set_name(&dimm->dev, "rank%d", dimm->idx); else - dev_set_name(&dimm->dev, "dimm%d", index); + dev_set_name(&dimm->dev, "dimm%d", dimm->idx); dev_set_drvdata(&dimm->dev, dimm); pm_runtime_forbid(&mci->dev); @@ -916,7 +915,8 @@ static const struct device_type mci_attr_type = { int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, const struct attribute_group **groups) { - int i, err; + struct dimm_info *dimm; + int err; /* get the /sys/devices/system/edac subsys reference */ mci->dev.type = &mci_attr_type; @@ -940,13 +940,12 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, /* * Create the dimm/rank devices */ - for (i = 0; i < mci->tot_dimms; i++) { - struct dimm_info *dimm = mci->dimms[i]; + mci_for_each_dimm(mci, dimm) { /* Only expose populated DIMMs */ if (!dimm->nr_pages) continue; - err = edac_create_dimm_object(mci, dimm, i); + err = edac_create_dimm_object(mci, dimm); if (err) goto fail_unregister_dimm; } @@ -961,12 +960,9 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, return 0; fail_unregister_dimm: - for (i--; i >= 0; i--) { - struct dimm_info *dimm = mci->dimms[i]; - if (!dimm->nr_pages) - continue; - - device_unregister(&dimm->dev); + mci_for_each_dimm(mci, dimm) { + if (device_is_registered(&dimm->dev)) + device_unregister(&dimm->dev); } device_unregister(&mci->dev); @@ -978,7 +974,7 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci, */ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) { - int i; + struct dimm_info *dimm; edac_dbg(0, "\n"); @@ -989,8 +985,7 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) edac_delete_csrow_objects(mci); #endif - for (i = 0; i < mci->tot_dimms; i++) { - struct dimm_info *dimm = mci->dimms[i]; + mci_for_each_dimm(mci, dimm) { if (dimm->nr_pages == 0) continue; edac_dbg(1, "unregistering device %s\n", dev_name(&dimm->dev)); diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c index fb31e80dfe94..842080d7b33a 100644 --- a/drivers/edac/ghes_edac.c +++ b/drivers/edac/ghes_edac.c @@ -82,11 +82,11 @@ static void ghes_edac_count_dimms(const struct dmi_header *dh, void *arg) static int get_dimm_smbios_index(u16 handle) { struct mem_ctl_info *mci = ghes_pvt->mci; - int i; + struct dimm_info *dimm; - for (i = 0; i < mci->tot_dimms; i++) { - if (mci->dimms[i]->smbios_handle == handle) - return i; + mci_for_each_dimm(mci, dimm) { + if (dimm->smbios_handle == handle) + return dimm->idx; } return -1; } diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c index 134586753311..0ddc41e47a96 100644 --- a/drivers/edac/i5100_edac.c +++ b/drivers/edac/i5100_edac.c @@ -846,20 +846,17 @@ static void i5100_init_interleaving(struct pci_dev *pdev, static void i5100_init_csrows(struct mem_ctl_info *mci) { - int i; struct i5100_priv *priv = mci->pvt_info; + struct dimm_info *dimm; - for (i = 0; i < mci->tot_dimms; i++) { - struct dimm_info *dimm; - const unsigned long npages = i5100_npages(mci, i); - const unsigned int chan = i5100_csrow_to_chan(mci, i); - const unsigned int rank = i5100_csrow_to_rank(mci, i); + mci_for_each_dimm(mci, dimm) { + const unsigned long npages = i5100_npages(mci, dimm->idx); + const unsigned int chan = i5100_csrow_to_chan(mci, dimm->idx); + const unsigned int rank = i5100_csrow_to_rank(mci, dimm->idx); if (!npages) continue; - dimm = edac_get_dimm(mci, chan, rank, 0); - dimm->nr_pages = npages; dimm->grain = 32; dimm->dtype = (priv->mtr[chan][rank].width == 4) ? diff --git a/include/linux/edac.h b/include/linux/edac.h index 79c5564ee314..8beb6e834be9 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -599,6 +599,13 @@ struct mem_ctl_info { u16 fake_inject_count; }; +#define mci_for_each_dimm(mci, dimm) \ + for ((dimm) = (mci)->dimms[0]; \ + (dimm); \ + (dimm) = (dimm)->idx + 1 < (mci)->tot_dimms \ + ? (mci)->dimms[(dimm)->idx + 1] \ + : NULL) + /** * edac_get_dimm_by_index - Get DIMM info from a memory controller * given by an index
Introduce the mci_for_each_dimm() iterator. It returns a pointer to a struct dimm_info. This makes the declaration and use of an index obsolete and avoids access to internal data of struct mci (direct array access etc). Signed-off-by: Robert Richter <rrichter@marvell.com> --- drivers/edac/edac_mc.c | 19 +++++++++++-------- drivers/edac/edac_mc_sysfs.c | 29 ++++++++++++----------------- drivers/edac/ghes_edac.c | 8 ++++---- drivers/edac/i5100_edac.c | 13 +++++-------- include/linux/edac.h | 7 +++++++ 5 files changed, 39 insertions(+), 37 deletions(-)