Ravikiran G Thirumalai a écrit :
Change struct proto->memory_allocated to a batching per-CPU counter
(percpu_counter) from an atomic_t. A batching counter is better than a
plain per-CPU counter as this field is read often.
Signed-off-by: Pravin B. Shelar <[EMAIL PROTECTED]>
Signed-off-by: Ravikiran Thirumalai <[EMAIL PROTECTED]>
Signed-off-by: Shai Fultheim <[EMAIL PROTECTED]>
Hello Ravikiran
I like this patch, but I'm not sure current percpu_counter fits the needs.
The percpu_counter_read() can return a value that is off by +-
FBC_BATCH*NR_CPUS, ie 2*(NR_CPUS^2) or 4*(NR_CPUS^2)
if NR_CPUS = 128, the 'error' from percpu_counter_read() is +- 32768
Is it acceptable ?
Thank you
Eric
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