[PATCH v2] powerpc/imc: Dont create debugfs files for cpu-less nodes
maddy
maddy at linux.vnet.ibm.com
Mon Jul 15 16:22:17 AEST 2019
On 7/11/19 10:23 AM, Michael Ellerman wrote:
> Hi Maddy,
>
> Madhavan Srinivasan <maddy at linux.vnet.ibm.com> writes:
>> diff --git a/arch/powerpc/platforms/powernv/opal-imc.c b/arch/powerpc/platforms/powernv/opal-imc.c
>> index 186109bdd41b..e04b20625cb9 100644
>> --- a/arch/powerpc/platforms/powernv/opal-imc.c
>> +++ b/arch/powerpc/platforms/powernv/opal-imc.c
>> @@ -69,20 +69,20 @@ static void export_imc_mode_and_cmd(struct device_node *node,
>> if (of_property_read_u32(node, "cb_offset", &cb_offset))
>> cb_offset = IMC_CNTL_BLK_OFFSET;
>>
>> - for_each_node(nid) {
>> - loc = (u64)(pmu_ptr->mem_info[chip].vbase) + cb_offset;
>> + while (ptr->vbase != NULL) {
> This means you'll bail out as soon as you find a node with no vbase, but
> it's possible we could have a CPU-less node intermingled with other
> nodes.
Nice catch. Thanks for the review, will fix it.
Maddy
>
> So I think you want to keep the for loop, but continue if you see a NULL
> vbase?
>
>
>> + loc = (u64)(ptr->vbase) + cb_offset;
>> imc_mode_addr = (u64 *)(loc + IMC_CNTL_BLK_MODE_OFFSET);
>> - sprintf(mode, "imc_mode_%d", nid);
>> + sprintf(mode, "imc_mode_%d", (u32)(ptr->id));
>> if (!imc_debugfs_create_x64(mode, 0600, imc_debugfs_parent,
>> imc_mode_addr))
>> goto err;
>>
>> imc_cmd_addr = (u64 *)(loc + IMC_CNTL_BLK_CMD_OFFSET);
>> - sprintf(cmd, "imc_cmd_%d", nid);
>> + sprintf(cmd, "imc_cmd_%d", (u32)(ptr->id));
>> if (!imc_debugfs_create_x64(cmd, 0600, imc_debugfs_parent,
>> imc_cmd_addr))
>> goto err;
>> - chip++;
>> + ptr++;
>> }
>> return;
> cheers
>
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