>-----Original Message-----
>From: Fan Ni <nifan.cxl@xxxxxxxxx>
>Sent: 08 November 2024 16:59
>To: Shiju Jose <shiju.jose@xxxxxxxxxx>
>Cc: linux-edac@xxxxxxxxxxxxxxx; linux-cxl@xxxxxxxxxxxxxxx; linux-
>acpi@xxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
>bp@xxxxxxxxx; tony.luck@xxxxxxxxx; rafael@xxxxxxxxxx; lenb@xxxxxxxxxx;
>mchehab@xxxxxxxxxx; dan.j.williams@xxxxxxxxx; dave@xxxxxxxxxxxx; Jonathan
>Cameron <jonathan.cameron@xxxxxxxxxx>; gregkh@xxxxxxxxxxxxxxxxxxx;
>sudeep.holla@xxxxxxx; jassisinghbrar@xxxxxxxxx; dave.jiang@xxxxxxxxx;
>alison.schofield@xxxxxxxxx; vishal.l.verma@xxxxxxxxx; ira.weiny@xxxxxxxxx;
>david@xxxxxxxxxx; Vilas.Sridharan@xxxxxxx; leo.duran@xxxxxxx;
>Yazen.Ghannam@xxxxxxx; rientjes@xxxxxxxxxx; jiaqiyan@xxxxxxxxxx;
>Jon.Grimm@xxxxxxx; dave.hansen@xxxxxxxxxxxxxxx;
>naoya.horiguchi@xxxxxxx; james.morse@xxxxxxx; jthoughton@xxxxxxxxxx;
>somasundaram.a@xxxxxxx; erdemaktas@xxxxxxxxxx; pgonda@xxxxxxxxxx;
>duenwen@xxxxxxxxxx; gthelen@xxxxxxxxxx;
>wschwartz@xxxxxxxxxxxxxxxxxxx; dferguson@xxxxxxxxxxxxxxxxxxx;
>wbs@xxxxxxxxxxxxxxxxxxxxxx; nifan.cxl@xxxxxxxxx; tanxiaofei
><tanxiaofei@xxxxxxxxxx>; Zengtao (B) <prime.zeng@xxxxxxxxxxxxx>; Roberto
>Sassu <roberto.sassu@xxxxxxxxxx>; kangkang.shen@xxxxxxxxxxxxx;
>wanghuiqiang <wanghuiqiang@xxxxxxxxxx>; Linuxarm
><linuxarm@xxxxxxxxxx>
>Subject: Re: [PATCH v15 11/15] EDAC: Add memory repair control feature
>
>On Fri, Nov 01, 2024 at 09:17:29AM +0000, shiju.jose@xxxxxxxxxx wrote:
>> From: Shiju Jose <shiju.jose@xxxxxxxxxx>
>>
>> Add generic EDAC memory repair control, eg. PPR(Post Package Repair),
>> memory sparing etc, control driver in order to control memory repairs
>> in the system. Supports sPPR(soft PPR), hPPR(hard PPR), soft/hard
>> memory sparing, memory sparing at cacheline/row/bank/rank granularity etc.
>> Device with memory repair features registers with EDAC device driver,
>> which retrieves memory repair descriptor from EDAC memory repair
>> driver and exposes the sysfs repair control attributes to userspace in
>> /sys/bus/edac/devices/<dev-name>/mem_repairX/.
>>
>> The common memory repair control interface abstracts the control of
>> arbitrary memory repair functionality into a standardized set of functions.
>> The sysfs memory repair attribute nodes are only available if the
>> client driver has implemented the corresponding attribute callback
>> function and provided operations to the EDAC device driver during
>registration.
>>
>> Signed-off-by: Shiju Jose <shiju.jose@xxxxxxxxxx>
>> ---
>> .../ABI/testing/sysfs-edac-memory-repair | 168 ++++++++
>> drivers/edac/Makefile | 2 +-
>> drivers/edac/edac_device.c | 32 ++
>> drivers/edac/mem_repair.c | 367 ++++++++++++++++++
>> include/linux/edac.h | 87 +++++
>> 5 files changed, 655 insertions(+), 1 deletion(-) create mode 100644
>> Documentation/ABI/testing/sysfs-edac-memory-repair
>> create mode 100755 drivers/edac/mem_repair.c
>>
>> diff --git a/Documentation/ABI/testing/sysfs-edac-memory-repair
>> b/Documentation/ABI/testing/sysfs-edac-memory-repair
>> new file mode 100644
>> index 000000000000..393206b8d418
[...]
>>
>> + if (mem_repair_cnt) {
>> + ctx->mem_repair = kcalloc(mem_repair_cnt, sizeof(*ctx-
>>mem_repair), GFP_KERNEL);
>> + if (!ctx->mem_repair) {
>> + ret = -ENOMEM;
>> + goto groups_free;
>
>If the function returns here, we will have a leak from memory pointed by ctx-
>>scrub.
Thanks Fan for reporting.
Fixed.
>
>Fan
>> + }
>> + }
>> +
[...]
>--
>Fan Ni
Thanks,
Shiju
