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

From Ingo Molnar <mingo@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH v2][RESEND] perf, x86: Fix multi-segment problem of perf_event_intel_uncore
Date 2015-09-01 13:40 +0200
Message-ID <q3S4V-5ix-7@gated-at.bofh.it> (permalink)
References <q1UDU-6OO-17@gated-at.bofh.it> <q3RLz-4Wc-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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* Peter Zijlstra <peterz@infradead.org> 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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[PATCH v2][RESEND] perf, x86: Fix multi-segment problem of perf_event_intel_uncore Taku Izumi <izumi.taku@jp.fujitsu.com> - 2015-08-27 04:00 +0200
  Re: [PATCH v2][RESEND] perf, x86: Fix multi-segment problem of  perf_event_intel_uncore Peter Zijlstra <peterz@infradead.org> - 2015-09-01 13:20 +0200
    Re: [PATCH v2][RESEND] perf, x86: Fix multi-segment problem of  perf_event_intel_uncore Ingo Molnar <mingo@kernel.org> - 2015-09-01 13:40 +0200
      Re: [PATCH v2][RESEND] perf, x86: Fix multi-segment problem of  perf_event_intel_uncore Peter Zijlstra <peterz@infradead.org> - 2015-09-01 13:40 +0200

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