The legacy sysfs EDAC interface has been made obsolete more than a decade
ago through the introduction of a new per-DIMM interface.
The legacy interface however, hasn't been removed till date.
Begin deprecating it so that it can eventually be removed two releases
later.
Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
---
Changes in v3:
Patch introduced.
---
drivers/edac/Kconfig | 2 +-
drivers/edac/edac_mc_sysfs.c | 14 ++++++++++++++
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index b824472208c4..19470f4efee7 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -25,7 +25,7 @@ if EDAC
config EDAC_LEGACY_SYSFS
bool "EDAC legacy sysfs"
- default y
+ default n
help
Enable the compatibility sysfs nodes.
Use 'Y' if your edac utilities aren't ported to work with the newer
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 8689631f1905..3840eef942f8 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -144,6 +144,8 @@ struct dev_ch_attribute {
static ssize_t csrow_ue_count_show(struct device *dev,
struct device_attribute *mattr, char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
+
struct csrow_info *csrow = to_csrow(dev);
return sysfs_emit(data, "%u\n", csrow->ue_count);
@@ -152,6 +154,8 @@ static ssize_t csrow_ue_count_show(struct device *dev,
static ssize_t csrow_ce_count_show(struct device *dev,
struct device_attribute *mattr, char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
+
struct csrow_info *csrow = to_csrow(dev);
return sysfs_emit(data, "%u\n", csrow->ce_count);
@@ -160,6 +164,8 @@ static ssize_t csrow_ce_count_show(struct device *dev,
static ssize_t csrow_size_show(struct device *dev,
struct device_attribute *mattr, char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
+
struct csrow_info *csrow = to_csrow(dev);
int i;
u32 nr_pages = 0;
@@ -172,6 +178,8 @@ static ssize_t csrow_size_show(struct device *dev,
static ssize_t csrow_mem_type_show(struct device *dev,
struct device_attribute *mattr, char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
+
struct csrow_info *csrow = to_csrow(dev);
return sysfs_emit(data, "%s\n", edac_mem_types[csrow->channels[0]->dimm->mtype]);
@@ -180,6 +188,8 @@ static ssize_t csrow_mem_type_show(struct device *dev,
static ssize_t csrow_dev_type_show(struct device *dev,
struct device_attribute *mattr, char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
+
struct csrow_info *csrow = to_csrow(dev);
return sysfs_emit(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
@@ -189,6 +199,8 @@ static ssize_t csrow_edac_mode_show(struct device *dev,
struct device_attribute *mattr,
char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
+
struct csrow_info *csrow = to_csrow(dev);
return sysfs_emit(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
@@ -199,6 +211,7 @@ static ssize_t channel_dimm_label_show(struct device *dev,
struct device_attribute *mattr,
char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
struct csrow_info *csrow = to_csrow(dev);
unsigned int chan = to_channel(mattr);
struct rank_info *rank = csrow->channels[chan];
@@ -238,6 +251,7 @@ static ssize_t channel_dimm_label_store(struct device *dev,
static ssize_t channel_ce_count_show(struct device *dev,
struct device_attribute *mattr, char *data)
{
+ pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
struct csrow_info *csrow = to_csrow(dev);
unsigned int chan = to_channel(mattr);
struct rank_info *rank = csrow->channels[chan];
--
2.43.0On Tue, Sep 09, 2025 at 06:53:14PM +0000, Avadhut Naik wrote:
> The legacy sysfs EDAC interface has been made obsolete more than a decade
> ago through the introduction of a new per-DIMM interface.
>
> The legacy interface however, hasn't been removed till date.
>
> Begin deprecating it so that it can eventually be removed two releases
> later.
>
> Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
> ---
> Changes in v3:
> Patch introduced.
> ---
> drivers/edac/Kconfig | 2 +-
> drivers/edac/edac_mc_sysfs.c | 14 ++++++++++++++
> 2 files changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
> index b824472208c4..19470f4efee7 100644
> --- a/drivers/edac/Kconfig
> +++ b/drivers/edac/Kconfig
> @@ -25,7 +25,7 @@ if EDAC
>
> config EDAC_LEGACY_SYSFS
> bool "EDAC legacy sysfs"
> - default y
> + default n
> help
> Enable the compatibility sysfs nodes.
> Use 'Y' if your edac utilities aren't ported to work with the newer
> diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
> index 8689631f1905..3840eef942f8 100644
> --- a/drivers/edac/edac_mc_sysfs.c
> +++ b/drivers/edac/edac_mc_sysfs.c
> @@ -144,6 +144,8 @@ struct dev_ch_attribute {
> static ssize_t csrow_ue_count_show(struct device *dev,
> struct device_attribute *mattr, char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> +
> struct csrow_info *csrow = to_csrow(dev);
>
> return sysfs_emit(data, "%u\n", csrow->ue_count);
> @@ -152,6 +154,8 @@ static ssize_t csrow_ue_count_show(struct device *dev,
> static ssize_t csrow_ce_count_show(struct device *dev,
> struct device_attribute *mattr, char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> +
> struct csrow_info *csrow = to_csrow(dev);
>
> return sysfs_emit(data, "%u\n", csrow->ce_count);
> @@ -160,6 +164,8 @@ static ssize_t csrow_ce_count_show(struct device *dev,
> static ssize_t csrow_size_show(struct device *dev,
> struct device_attribute *mattr, char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> +
> struct csrow_info *csrow = to_csrow(dev);
> int i;
> u32 nr_pages = 0;
> @@ -172,6 +178,8 @@ static ssize_t csrow_size_show(struct device *dev,
> static ssize_t csrow_mem_type_show(struct device *dev,
> struct device_attribute *mattr, char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> +
> struct csrow_info *csrow = to_csrow(dev);
>
> return sysfs_emit(data, "%s\n", edac_mem_types[csrow->channels[0]->dimm->mtype]);
> @@ -180,6 +188,8 @@ static ssize_t csrow_mem_type_show(struct device *dev,
> static ssize_t csrow_dev_type_show(struct device *dev,
> struct device_attribute *mattr, char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> +
> struct csrow_info *csrow = to_csrow(dev);
>
> return sysfs_emit(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
> @@ -189,6 +199,8 @@ static ssize_t csrow_edac_mode_show(struct device *dev,
> struct device_attribute *mattr,
> char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> +
> struct csrow_info *csrow = to_csrow(dev);
>
> return sysfs_emit(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
> @@ -199,6 +211,7 @@ static ssize_t channel_dimm_label_show(struct device *dev,
> struct device_attribute *mattr,
> char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> struct csrow_info *csrow = to_csrow(dev);
> unsigned int chan = to_channel(mattr);
> struct rank_info *rank = csrow->channels[chan];
> @@ -238,6 +251,7 @@ static ssize_t channel_dimm_label_store(struct device *dev,
> static ssize_t channel_ce_count_show(struct device *dev,
> struct device_attribute *mattr, char *data)
> {
> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
> struct csrow_info *csrow = to_csrow(dev);
> unsigned int chan = to_channel(mattr);
> struct rank_info *rank = csrow->channels[chan];
> --
Depcreated -> Deprecated
And maybe the warning can go in an short inline function? Sorry, I
forgot if this came up already.
Also, "two future releases" is vague. And it may be confusing if this is
backported.
Does anyone have a better suggestion, or is this good as-is?
Thanks,
Yazen
On 9/10/2025 10:24, Yazen Ghannam wrote:
> On Tue, Sep 09, 2025 at 06:53:14PM +0000, Avadhut Naik wrote:
>> The legacy sysfs EDAC interface has been made obsolete more than a decade
>> ago through the introduction of a new per-DIMM interface.
>>
>> The legacy interface however, hasn't been removed till date.
>>
>> Begin deprecating it so that it can eventually be removed two releases
>> later.
>>
>> Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
>> ---
>> Changes in v3:
>> Patch introduced.
>> ---
>> drivers/edac/Kconfig | 2 +-
>> drivers/edac/edac_mc_sysfs.c | 14 ++++++++++++++
>> 2 files changed, 15 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
>> index b824472208c4..19470f4efee7 100644
>> --- a/drivers/edac/Kconfig
>> +++ b/drivers/edac/Kconfig
>> @@ -25,7 +25,7 @@ if EDAC
>>
>> config EDAC_LEGACY_SYSFS
>> bool "EDAC legacy sysfs"
>> - default y
>> + default n
>> help
>> Enable the compatibility sysfs nodes.
>> Use 'Y' if your edac utilities aren't ported to work with the newer
>> diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
>> index 8689631f1905..3840eef942f8 100644
>> --- a/drivers/edac/edac_mc_sysfs.c
>> +++ b/drivers/edac/edac_mc_sysfs.c
>> @@ -144,6 +144,8 @@ struct dev_ch_attribute {
>> static ssize_t csrow_ue_count_show(struct device *dev,
>> struct device_attribute *mattr, char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> +
>> struct csrow_info *csrow = to_csrow(dev);
>>
>> return sysfs_emit(data, "%u\n", csrow->ue_count);
>> @@ -152,6 +154,8 @@ static ssize_t csrow_ue_count_show(struct device *dev,
>> static ssize_t csrow_ce_count_show(struct device *dev,
>> struct device_attribute *mattr, char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> +
>> struct csrow_info *csrow = to_csrow(dev);
>>
>> return sysfs_emit(data, "%u\n", csrow->ce_count);
>> @@ -160,6 +164,8 @@ static ssize_t csrow_ce_count_show(struct device *dev,
>> static ssize_t csrow_size_show(struct device *dev,
>> struct device_attribute *mattr, char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> +
>> struct csrow_info *csrow = to_csrow(dev);
>> int i;
>> u32 nr_pages = 0;
>> @@ -172,6 +178,8 @@ static ssize_t csrow_size_show(struct device *dev,
>> static ssize_t csrow_mem_type_show(struct device *dev,
>> struct device_attribute *mattr, char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> +
>> struct csrow_info *csrow = to_csrow(dev);
>>
>> return sysfs_emit(data, "%s\n", edac_mem_types[csrow->channels[0]->dimm->mtype]);
>> @@ -180,6 +188,8 @@ static ssize_t csrow_mem_type_show(struct device *dev,
>> static ssize_t csrow_dev_type_show(struct device *dev,
>> struct device_attribute *mattr, char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> +
>> struct csrow_info *csrow = to_csrow(dev);
>>
>> return sysfs_emit(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
>> @@ -189,6 +199,8 @@ static ssize_t csrow_edac_mode_show(struct device *dev,
>> struct device_attribute *mattr,
>> char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> +
>> struct csrow_info *csrow = to_csrow(dev);
>>
>> return sysfs_emit(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
>> @@ -199,6 +211,7 @@ static ssize_t channel_dimm_label_show(struct device *dev,
>> struct device_attribute *mattr,
>> char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> struct csrow_info *csrow = to_csrow(dev);
>> unsigned int chan = to_channel(mattr);
>> struct rank_info *rank = csrow->channels[chan];
>> @@ -238,6 +251,7 @@ static ssize_t channel_dimm_label_store(struct device *dev,
>> static ssize_t channel_ce_count_show(struct device *dev,
>> struct device_attribute *mattr, char *data)
>> {
>> + pr_warn_once("Depcreated interface! Will be removed within two future releases. Please switch to using the new interface!\n");
>> struct csrow_info *csrow = to_csrow(dev);
>> unsigned int chan = to_channel(mattr);
>> struct rank_info *rank = csrow->channels[chan];
>> --
>
> Depcreated -> Deprecated
>
Will change.
> And maybe the warning can go in an short inline function? Sorry, I
> forgot if this came up already.
>
> Also, "two future releases" is vague. And it may be confusing if this is
> backported.
>
> Does anyone have a better suggestion, or is this good as-is?
>
How about explicitly stating a release?
6.20, for example.
> Thanks,
> Yazen
--
Thanks,
Avadhut Naik
On Wed, Sep 10, 2025 at 12:38:44PM -0500, Naik, Avadhut wrote: [...] > > And maybe the warning can go in an short inline function? Sorry, I > > forgot if this came up already. > > > > Also, "two future releases" is vague. And it may be confusing if this is > > backported. > > > > Does anyone have a better suggestion, or is this good as-is? > > > > How about explicitly stating a release? > 6.20, for example. > I think that may be okay, but I'm not sure. Boris, what do you think? Thanks, Yazen
On 9/15/2025 12:04, Yazen Ghannam wrote: > On Wed, Sep 10, 2025 at 12:38:44PM -0500, Naik, Avadhut wrote: > > [...] >>> And maybe the warning can go in an short inline function? Sorry, I >>> forgot if this came up already. >>> >>> Also, "two future releases" is vague. And it may be confusing if this is >>> backported. >>> >>> Does anyone have a better suggestion, or is this good as-is? >>> >> >> How about explicitly stating a release? >> 6.20, for example. >> > > I think that may be okay, but I'm not sure. > > Boris, what do you think? > > Thanks, > Yazen Another alternative could be doing something like this: [ 1340.644001] NOTICE: Automounting of tracing to debugfs is deprecated and will be removed in 2030 Mention the year instead of release! -- Thanks, Avadhut Naik
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