Hi,
Thanks for reviewing this !
Pavel Emelyanov wrote:
> Pavel Emelyanov wrote:
>> Cedric Le Goater wrote:
>>> Pierre Peiffer wrote:
>
> [snip]
>
>>> Pavel, what do you think of it ?
>> Looks sane, good catch, Pierre.
>>
>> But I'd find out whether these three ipc_ids intersect any
>> cache-line. In other words I'd mark the struct ipc_ids as
>> ____cacheline_aligned and checked for any differences.
>
> BTW! It might be also useful to keep ipc_ids closer to their
> sysctl parameters.
>
It makes sense indeed.
That would mean to have something like this, right ?
struct ipc_namespace {
struct kref kref;
struct ipc_ids sem_ids;
int sem_ctls[4];
int used_sems;
struct ipc_ids msg_ids;
int msg_ctlmax;
int msg_ctlmnb;
int msg_ctlmni;
atomic_t msg_bytes;
atomic_t msg_hdrs;
struct ipc_ids shm_ids;
size_t shm_ctlmax;
size_t shm_ctlall;
int shm_ctlmni;
int shm_tot;
};
After a quick look, that implies to rework a little bit procfs... othwise, it's
not a big deal as I can see.
P.
>>> Acked-by: Cedric Le Goater <[email protected]>
>>>
>>> Thanks,
>> Thanks,
>> Pavel
>>
>>> C.
>
> [snip]
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--
Pierre Peiffer
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