When using accumulator queue for rx side for network driver, following
warning is seen when doing a reboot command from Linux console. This
is because, affinity value is not reset before calling free_irq(). This
patch fixes this.
Deconfiguring network interfaces...
[ 55.176589] ------------[ cut here ]-----------
[ 55.181232] WARNING: CPU: 0 PID: 2081 at kernel/irq/manage.c:1370
__free_irq+0x208/0x214
Signed-off-by: Murali Karicheri <[email protected]>
---
- Applies to v4.2.0-rc8
drivers/soc/ti/knav_qmss_acc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/soc/ti/knav_qmss_acc.c b/drivers/soc/ti/knav_qmss_acc.c
index ef6f69d..b98fe56 100644
--- a/drivers/soc/ti/knav_qmss_acc.c
+++ b/drivers/soc/ti/knav_qmss_acc.c
@@ -261,6 +261,10 @@ static int knav_range_setup_acc_irq(struct knav_range_info *range,
if (old && !new) {
dev_dbg(kdev->dev, "setup-acc-irq: freeing %s for channel %s\n",
acc->name, acc->name);
+ ret = irq_set_affinity_hint(irq, NULL);
+ if (ret)
+ dev_warn(range->kdev->dev,
+ "Failed to set IRQ affinity\n");
free_irq(irq, range);
}
--
1.9.1
On 8/27/15 8:51 AM, Murali Karicheri wrote:
> When using accumulator queue for rx side for network driver, following
> warning is seen when doing a reboot command from Linux console. This
> is because, affinity value is not reset before calling free_irq(). This
> patch fixes this.
>
> Deconfiguring network interfaces...
> [ 55.176589] ------------[ cut here ]-----------
> [ 55.181232] WARNING: CPU: 0 PID: 2081 at kernel/irq/manage.c:1370
> __free_irq+0x208/0x214
>
> Signed-off-by: Murali Karicheri <[email protected]>
> ---
Looks good. I will add it my queue. Thanks !!
Regards,
Santosh
On 08/27/2015 10:51 AM, Murali Karicheri wrote:
> When using accumulator queue for rx side for network driver, following
> warning is seen when doing a reboot command from Linux console. This
> is because, affinity value is not reset before calling free_irq(). This
> patch fixes this.
>
> Deconfiguring network interfaces...
> [ 55.176589] ------------[ cut here ]-----------
> [ 55.181232] WARNING: CPU: 0 PID: 2081 at kernel/irq/manage.c:1370
> __free_irq+0x208/0x214
The full content of the warning should be included in the commit
message; __free_irq has several potential sources of warning messages,
and line 1370 doesn't correspond to any of them in 4.2-rc8.
> Signed-off-by: Murali Karicheri <[email protected]>
> ---
> - Applies to v4.2.0-rc8
>
> drivers/soc/ti/knav_qmss_acc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/soc/ti/knav_qmss_acc.c b/drivers/soc/ti/knav_qmss_acc.c
> index ef6f69d..b98fe56 100644
> --- a/drivers/soc/ti/knav_qmss_acc.c
> +++ b/drivers/soc/ti/knav_qmss_acc.c
> @@ -261,6 +261,10 @@ static int knav_range_setup_acc_irq(struct knav_range_info *range,
> if (old && !new) {
> dev_dbg(kdev->dev, "setup-acc-irq: freeing %s for channel %s\n",
> acc->name, acc->name);
> + ret = irq_set_affinity_hint(irq, NULL);
> + if (ret)
> + dev_warn(range->kdev->dev,
> + "Failed to set IRQ affinity\n");
Seems unnecessary to add a warning here.
On 08/27/2015 12:43 PM, Nathan Lynch wrote:
> On 08/27/2015 10:51 AM, Murali Karicheri wrote:
>> When using accumulator queue for rx side for network driver, following
>> warning is seen when doing a reboot command from Linux console. This
>> is because, affinity value is not reset before calling free_irq(). This
>> patch fixes this.
>>
>> Deconfiguring network interfaces...
>> [ 55.176589] ------------[ cut here ]-----------
>> [ 55.181232] WARNING: CPU: 0 PID: 2081 at kernel/irq/manage.c:1370
>> __free_irq+0x208/0x214
>
> The full content of the warning should be included in the commit
> message; __free_irq has several potential sources of warning messages,
> and line 1370 doesn't correspond to any of them in 4.2-rc8.
The log corresponds to 4.1.x kernel. Corresponding WARN_ONCE is
#ifdef CONFIG_SMP
/* make sure affinity_hint is cleaned up */
if (WARN_ON_ONCE(desc->affinity_hint))
desc->affinity_hint = NULL;
#endif
Which is line 1922. I can edit to make it 1922. Does that work?
Murali
>
>
>> Signed-off-by: Murali Karicheri <[email protected]>
>> ---
>> - Applies to v4.2.0-rc8
>>
>> drivers/soc/ti/knav_qmss_acc.c | 4 ++++
>> 1 file changed, 4 insertions(+)
>>
>> diff --git a/drivers/soc/ti/knav_qmss_acc.c b/drivers/soc/ti/knav_qmss_acc.c
>> index ef6f69d..b98fe56 100644
>> --- a/drivers/soc/ti/knav_qmss_acc.c
>> +++ b/drivers/soc/ti/knav_qmss_acc.c
>> @@ -261,6 +261,10 @@ static int knav_range_setup_acc_irq(struct knav_range_info *range,
>> if (old && !new) {
>> dev_dbg(kdev->dev, "setup-acc-irq: freeing %s for channel %s\n",
>> acc->name, acc->name);
>> + ret = irq_set_affinity_hint(irq, NULL);
>> + if (ret)
>> + dev_warn(range->kdev->dev,
>> + "Failed to set IRQ affinity\n");
>
> Seems unnecessary to add a warning here.
>
>
--
Murali Karicheri
Linux Kernel, Keystone
On 08/27/2015 01:23 PM, Murali Karicheri wrote:
> On 08/27/2015 12:43 PM, Nathan Lynch wrote:
>> On 08/27/2015 10:51 AM, Murali Karicheri wrote:
>>> When using accumulator queue for rx side for network driver, following
>>> warning is seen when doing a reboot command from Linux console. This
>>> is because, affinity value is not reset before calling free_irq(). This
>>> patch fixes this.
>>>
>>> Deconfiguring network interfaces...
>>> [ 55.176589] ------------[ cut here ]-----------
>>> [ 55.181232] WARNING: CPU: 0 PID: 2081 at kernel/irq/manage.c:1370
>>> __free_irq+0x208/0x214
>>
>> The full content of the warning should be included in the commit
>> message; __free_irq has several potential sources of warning messages,
>> and line 1370 doesn't correspond to any of them in 4.2-rc8.
>
> The log corresponds to 4.1.x kernel. Corresponding WARN_ONCE is
>
> #ifdef CONFIG_SMP
> /* make sure affinity_hint is cleaned up */
> if (WARN_ON_ONCE(desc->affinity_hint))
> desc->affinity_hint = NULL;
> #endif
>
> Which is line 1922. I can edit to make it 1922. Does that work?
Eh, I guess I wasn't thinking clearly about this clearly when I wrote
that. (I somehow had the notion that WARN_ON... maybe printed more than
just the file and line number, but that is clearly mistaken.) I think
your message is fine as is, sorry for the noise.
I don't think changing the line number will make it any easier on future
readers.
On 8/27/15 11:34 AM, Nathan Lynch wrote:
> On 08/27/2015 01:23 PM, Murali Karicheri wrote:
>> On 08/27/2015 12:43 PM, Nathan Lynch wrote:
>>> On 08/27/2015 10:51 AM, Murali Karicheri wrote:
>>>> When using accumulator queue for rx side for network driver, following
>>>> warning is seen when doing a reboot command from Linux console. This
>>>> is because, affinity value is not reset before calling free_irq(). This
>>>> patch fixes this.
>>>>
>>>> Deconfiguring network interfaces...
>>>> [ 55.176589] ------------[ cut here ]-----------
>>>> [ 55.181232] WARNING: CPU: 0 PID: 2081 at kernel/irq/manage.c:1370
>>>> __free_irq+0x208/0x214
>>>
>>> The full content of the warning should be included in the commit
>>> message; __free_irq has several potential sources of warning messages,
>>> and line 1370 doesn't correspond to any of them in 4.2-rc8.
>>
>> The log corresponds to 4.1.x kernel. Corresponding WARN_ONCE is
>>
>> #ifdef CONFIG_SMP
>> /* make sure affinity_hint is cleaned up */
>> if (WARN_ON_ONCE(desc->affinity_hint))
>> desc->affinity_hint = NULL;
>> #endif
>>
>> Which is line 1922. I can edit to make it 1922. Does that work?
>
> Eh, I guess I wasn't thinking clearly about this clearly when I wrote
> that. (I somehow had the notion that WARN_ON... maybe printed more than
> just the file and line number, but that is clearly mistaken.) I think
> your message is fine as is, sorry for the noise.
>
> I don't think changing the line number will make it any easier on future
> readers.
>
Right. Just leave the full call in the commit so that the context
is captured.
On 08/27/2015 02:36 PM, [email protected] wrote:
> On 8/27/15 11:34 AM, Nathan Lynch wrote:
>> On 08/27/2015 01:23 PM, Murali Karicheri wrote:
>>> On 08/27/2015 12:43 PM, Nathan Lynch wrote:
>>>> On 08/27/2015 10:51 AM, Murali Karicheri wrote:
>>>>> When using accumulator queue for rx side for network driver, following
>>>>> warning is seen when doing a reboot command from Linux console. This
>>>>> is because, affinity value is not reset before calling free_irq().
>>>>> This
>>>>> patch fixes this.
>>>>>
>>>>> Deconfiguring network interfaces...
>>>>> [ 55.176589] ------------[ cut here ]-----------
>>>>> [ 55.181232] WARNING: CPU: 0 PID: 2081 at kernel/irq/manage.c:1370
>>>>> __free_irq+0x208/0x214
>>>>
>>>> The full content of the warning should be included in the commit
>>>> message; __free_irq has several potential sources of warning messages,
>>>> and line 1370 doesn't correspond to any of them in 4.2-rc8.
>>>
>>> The log corresponds to 4.1.x kernel. Corresponding WARN_ONCE is
>>>
>>> #ifdef CONFIG_SMP
>>> /* make sure affinity_hint is cleaned up */
>>> if (WARN_ON_ONCE(desc->affinity_hint))
>>> desc->affinity_hint = NULL;
>>> #endif
>>>
>>> Which is line 1922. I can edit to make it 1922. Does that work?
>>
>> Eh, I guess I wasn't thinking clearly about this clearly when I wrote
>> that. (I somehow had the notion that WARN_ON... maybe printed more than
>> just the file and line number, but that is clearly mistaken.) I think
>> your message is fine as is, sorry for the noise.
>>
>> I don't think changing the line number will make it any easier on future
>> readers.
>>
> Right. Just leave the full call in the commit so that the context
> is captured.
>
>
Will do that and resend it
--
Murali Karicheri
Linux Kernel, Keystone