On 24/01/15 22:40, Thomas Gleixner wrote:
> On Fri, 23 Jan 2015, Daniel Thompson wrote:
>> This patch fixes that problem by providing banked clock data in a
>> similar manner to Thomas Gleixner's 4396e058c52e("timekeeping: Provide
>> fast and NMI safe access to CLOCK_MONOTONIC").
>
> By some defin
On Fri, 23 Jan 2015, Daniel Thompson wrote:
> This patch fixes that problem by providing banked clock data in a
> similar manner to Thomas Gleixner's 4396e058c52e("timekeeping: Provide
> fast and NMI safe access to CLOCK_MONOTONIC").
By some definition of similar.
> -struct clock_data {
> - k
Currently it is possible for an NMI (or FIQ on ARM) to come in and
read sched_clock() whilst update_sched_clock() has locked the seqcount
for writing. This results in the NMI handler locking up when it calls
raw_read_seqcount_begin().
This patch fixes that problem by providing banked clock data in
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