linux-kernel - Re: [PATCH] perf/x86/uncore: update support for client uncore IMC PMU

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Date:	Tue, 16 Sep 2014 09:00:50 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	ak@...ux.intel.com, kan.liang@...el.com
Subject: Re: [PATCH] perf/x86/uncore: update support for client uncore IMC PMU


* Stephane Eranian <eranian@...gle.com> wrote:

> 
> This patch restructures the memory controller (IMC) uncore
> PMU support for client SNB/IVB/HSW processors. The main change
> is that it can now cope with more than one PCI device ID per
> processor model. There are many flavors of memory controllers
> for each processor. They have different PCI device ID, yet
> they behave the same w.r.t. the memory controller PMU that
> we are interested in.
> 
> The patch now supports two distinct memory controllers for IVB
> processors: one for mobile, one for desktop.
> 
> Signed-off-by: Stephane eranian <eranian@...gle.com>
> ---
>  arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c |   68 +++++++++++++++------
>  include/linux/pci_ids.h                           |    1 +
>  2 files changed, 51 insertions(+), 18 deletions(-)

Please run patches through scripts/checkpatch.pl before 
submission, in case it points out legit problems. Checkpatch 
emits 6 warnings for your patch, the first four are bogus, the 
last two are worth addressing:

WARNING: space prohibited between function name and open 
parenthesis '('
#77: FILE: arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c:517:
+       for_each_imc_pci_id (p, desktop_imc_pci_ids) {

WARNING: Missing a blank line after declarations
#92: FILE: arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c:528:
+       struct pci_driver *imc_drv = imc_uncore_find_dev();
+       if (!imc_drv)

Thanks,

	Ingo
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