From: Alexey Dobriyan <adobriyan@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: "Aaron M. Ucko" <ucko@debian.org>
Subject: Fwd: [PATCH] cpufreq: honor cpu_sibling_map in speedstep-centrino.c
Date: Fri, 30 Sep 2005 18:16:11 +0400 [thread overview]
Message-ID: <20050930141603.GA26810@mipter.zuzino.mipt.ru> (raw)
To: kernel-janitors@lists.osdl.org
speedstep-centrino.c should honor cpu_sibling_map for the sake of
recent Intel processors, which support both Centrino-style Enhanced
SpeedStep and hyperthreading; even newer dual-core chips may need the
same fix.
--- linux-source-2.6.13.2/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c~ 2005-08-28 19:41:01.000000000 -0400
+++ linux-source-2.6.13.2/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c 2005-09-28 17:23:37.000000000 -0400
@@ -498,6 +498,10 @@
if (cpu->x86_vendor != X86_VENDOR_INTEL || !cpu_has(cpu, X86_FEATURE_EST))
return -ENODEV;
+#ifdef CONFIG_SMP
+ policy->cpus = cpu_sibling_map[policy->cpu];
+#endif
+
for (i = 0; i < N_IDS; i++)
if (centrino_verify_cpu_id(cpu, &cpu_ids[i]))
break;
reply other threads:[~2005-09-30 14:05 UTC|newest]
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