Re: [PATCH v2][RESEND] perf, x86: Fix multi-segment problem of perf_event_intel_uncore

From: Ingo Molnar
Date: Tue Sep 01 2015 - 07:31:56 EST



* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> +struct __find_pci2phy(int segment)
> +{
> + struct pci2phy_map *map;
> +
> + lockdep_assert_held(&pci2phy_map_lock);
> +
> + list_for_each_entry(map, &pci2phy_map_head, list) {
> + if (map->segment == segment)
> + return map;
> + }
> +
> + map = kmalloc(sizeof(struct pci2phy_map), GFP_ATOMIC);

I really don't think we should be adding new GFP_ATOMIC allocations whenever it
can be avoided.

Thanks,

Ingo
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