From: Stephane Eranian Date: Mon, 20 Aug 2012 09:24:21 +0000 (+0200) Subject: perf/x86: Enable Intel Cedarview Atom suppport X-Git-Tag: upstream/snapshot3+hdmi~6670^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3ec18cd8b8f8395d0df604c62ab3bc2cf3a966b4;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git perf/x86: Enable Intel Cedarview Atom suppport This patch enables perf_events support for Intel Cedarview Atom (model 54) processors. Support includes PEBS and LBR. Tested on my Atom N2600 netbook. Signed-off-by: Stephane Eranian Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20120820092421.GA11284@quad Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 7f2739e..0d3d63a 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -2008,6 +2008,7 @@ __init int intel_pmu_init(void) break; case 28: /* Atom */ + case 54: /* Cedariew */ memcpy(hw_cache_event_ids, atom_hw_cache_event_ids, sizeof(hw_cache_event_ids)); diff --git a/arch/x86/kernel/cpu/perf_event_intel_lbr.c b/arch/x86/kernel/cpu/perf_event_intel_lbr.c index 520b426..da02e9c 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_lbr.c +++ b/arch/x86/kernel/cpu/perf_event_intel_lbr.c @@ -686,7 +686,8 @@ void intel_pmu_lbr_init_atom(void) * to have an operational LBR which can freeze * on PMU interrupt */ - if (boot_cpu_data.x86_mask < 10) { + if (boot_cpu_data.x86_model == 28 + && boot_cpu_data.x86_mask < 10) { pr_cont("LBR disabled due to erratum"); return; }