Re: [Patch] statistics infrastructure - update 1
From: Martin Peschke
Date: Tue May 30 2006 - 07:21:52 EST
Heiko Carstens wrote:
case CPU_UP_PREPARE:
stat->pdata->ptrs[cpu] = statistic_alloc_ptr(stat, GFP_ATOMIC,
Why not GFP_KERNEL?
I see. Schedule() is permitted in this context. Will change it.
+ if (!stat->pdata->ptrs[cpu])
+ return -ENOMEM;
NOTIFY_BAD instead of -ENOMEM, I guess.
Not a bug, but slightly confusing. I think I will clean it up in my
next update patch.
break;
case CPU_UP_CANCELED:
case CPU_DEAD:
I think your merge code (which gets called if CPU_UP_PREPARE fails) expects
stat->pdata->ptrs[cpu] to be non-zero, right?
That's a bug and needs fixing (just bail out if pointer if zero).
Thanks, Martin
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