From: Robert Richter <rrichter@marvell.com>
To: Borislav Petkov <bp@alien8.de>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Tony Luck <tony.luck@intel.com>
Cc: James Morse <james.morse@arm.com>,
Robert Richter <rrichter@marvell.com>,
"linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Mauro Carvalho Chehab" <mchehab+samsung@kernel.org>
Subject: [PATCH v2 03/20] EDAC: Introduce mci_for_each_dimm() iterator
Date: Wed, 6 Nov 2019 09:33:07 +0000 [thread overview]
Message-ID: <20191106093239.25517-4-rrichter@marvell.com> (raw)
In-Reply-To: <20191106093239.25517-1-rrichter@marvell.com>
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 | 9 +++++----
drivers/edac/i5100_edac.c | 13 +++++--------
include/linux/edac.h | 7 +++++++
5 files changed, 40 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 d92cd99081d2..af27f8063891 100644
--- a/drivers/edac/ghes_edac.c
+++ b/drivers/edac/ghes_edac.c
@@ -90,12 +90,13 @@ static void ghes_edac_count_dimms(const struct dmi_header *dh, void *arg)
static int get_dimm_smbios_index(struct mem_ctl_info *mci, u16 handle)
{
- 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
--
2.20.1
next prev parent reply other threads:[~2019-11-06 9:33 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-06 9:32 [PATCH v2 00/20] EDAC: Rework edac_mc and ghes drivers Robert Richter
2019-11-06 9:33 ` [PATCH v2 01/20] EDAC: Replace EDAC_DIMM_PTR() macro with edac_get_dimm() function Robert Richter
2019-11-09 7:23 ` Mauro Carvalho Chehab
2019-11-06 9:33 ` [PATCH v2 02/20] EDAC: Remove EDAC_DIMM_OFF() macro Robert Richter
2019-11-09 7:27 ` Mauro Carvalho Chehab
2019-11-06 9:33 ` Robert Richter [this message]
2019-11-10 11:37 ` [PATCH v2 03/20] EDAC: Introduce mci_for_each_dimm() iterator Borislav Petkov
2019-11-06 9:33 ` [PATCH v2 04/20] EDAC, mc: Do not BUG_ON() in edac_mc_alloc() Robert Richter
2019-11-06 9:33 ` [PATCH v2 05/20] EDAC, mc: Remove needless zero string termination Robert Richter
2019-11-09 7:28 ` Mauro Carvalho Chehab
2019-11-09 10:11 ` Borislav Petkov
2019-11-06 9:33 ` [PATCH v2 06/20] EDAC, mc: Reduce indentation level in edac_mc_handle_error() Robert Richter
2019-11-06 9:33 ` [PATCH v2 07/20] EDAC, mc: Rename iterator variable to idx Robert Richter
2019-11-09 10:21 ` Borislav Petkov
2019-11-06 9:33 ` [PATCH v2 08/20] EDAC: Remove misleading comment in struct edac_raw_error_desc Robert Richter
2019-11-06 9:33 ` [PATCH v2 09/20] EDAC, ghes: Use standard kernel macros for page calculations Robert Richter
2019-11-06 9:33 ` [PATCH v2 10/20] EDAC, ghes: Fix grain calculation Robert Richter
2019-11-06 9:33 ` [PATCH v2 11/20] EDAC, ghes: Remove intermediate buffer pvt->detail_location Robert Richter
2019-11-06 9:33 ` [PATCH v2 12/20] EDAC, ghes: Unify trace_mc_event() code with edac_mc driver Robert Richter
2019-11-06 9:33 ` [PATCH v2 13/20] EDAC, Documentation: Describe CPER module definition and DIMM ranks Robert Richter
2019-11-06 9:33 ` [PATCH v2 14/20] EDAC, mc: Remove per layer counters Robert Richter
2019-11-09 7:40 ` Mauro Carvalho Chehab
2019-11-18 20:30 ` Robert Richter
2019-11-06 9:33 ` [PATCH v2 15/20] EDAC, mc: Split edac_mc_alloc() into smaller functions Robert Richter
2019-11-06 9:33 ` [PATCH v2 16/20] EDAC, mc: Reorder functions edac_mc_alloc*() Robert Richter
2019-11-06 9:33 ` [PATCH v2 17/20] EDAC, mc: Rework edac_raw_mc_handle_error() to use struct dimm_info Robert Richter
2019-11-06 9:33 ` [PATCH v2 18/20] EDAC: Store error type in struct edac_raw_error_desc Robert Richter
2019-11-09 7:30 ` Mauro Carvalho Chehab
2019-11-06 9:33 ` [PATCH v2 19/20] EDAC, mc: Determine mci pointer from the error descriptor Robert Richter
2019-11-06 9:33 ` [PATCH v2 20/20] EDAC, mc: Create new function edac_inc_csrow() Robert Richter
2019-11-09 7:32 ` Mauro Carvalho Chehab
2019-11-10 14:51 ` [PATCH v2 00/20] EDAC: Rework edac_mc and ghes drivers Borislav Petkov
2019-11-11 15:49 ` Robert Richter
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