On Tue 2021-03-02 11:45:27, John Ogness wrote:
> On 2021-03-01, Petr Mladek wrote:
> >> The kmsg_dumper can be called from any context and CPU, possibly
> >> from multiple CPUs simultaneously. Since the writing of the buffer
> >> can occur from a later scheduled work queue, the oops buffer must
>
On 2021-03-01, Petr Mladek wrote:
>> The kmsg_dumper can be called from any context and CPU, possibly
>> from multiple CPUs simultaneously. Since the writing of the buffer
>> can occur from a later scheduled work queue, the oops buffer must
>> be protected against simultaneous dumping.
>>
>> Use
On Thu 2021-02-25 21:24:25, John Ogness wrote:
> The kmsg_dumper can be called from any context and CPU, possibly
> from multiple CPUs simultaneously. Since the writing of the buffer
> can occur from a later scheduled work queue, the oops buffer must
> be protected against simultaneous dumping.
>
The kmsg_dumper can be called from any context and CPU, possibly
from multiple CPUs simultaneously. Since the writing of the buffer
can occur from a later scheduled work queue, the oops buffer must
be protected against simultaneous dumping.
Use an atomic bit to mark when the buffer is protected. R
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