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Message-Id: <20070523.172106.78492773.davem@davemloft.net>
Date: Wed, 23 May 2007 17:21:06 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: linux-kernel@...r.kernel.org
CC: postmaster@...r.kernel.org
Subject: Adrian Bunk
Does anyone have a way to contact him other than via email?
He started bouncing with 500 level errors this afternoon (example
attached below) and I'd like him to know what is happening.
I'm removing him from the lists for the time being.
Thanks to whoever can help out with this.
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Date: Wed, 23 May 2007 15:46:37 -0700
From: Venki Pallipadi <venkatesh.pallipadi@...el.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Dave Jones <davej@...hat.com>,
Len Brown <len.brown@...el.com>
Cc: linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] Display Intel Dynamic Acceleration feature in /proc/cpuinfo
Message-Id: <20070523224637.GB15887@...ux-os.sc.intel.com>
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Display Intel Dynamic Acceleration feature in /proc/cpuinfo. This feature
will be enabled automatically by current acpi-cpufreq driver and cpufreq.
Refer to Intel Software Developer's Manual for more details about the feature.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>
Index: linux-2.6.22-rc-mm/arch/i386/kernel/cpu/proc.c
===================================================================
--- linux-2.6.22-rc-mm.orig/arch/i386/kernel/cpu/proc.c
+++ linux-2.6.22-rc-mm/arch/i386/kernel/cpu/proc.c
@@ -41,7 +41,7 @@ static int show_cpuinfo(struct seq_file
"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
NULL, NULL, NULL, NULL,
"constant_tsc", "up", NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ "ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Intel-defined (#2) */
Index: linux-2.6.22-rc-mm/arch/x86_64/kernel/setup.c
===================================================================
--- linux-2.6.22-rc-mm.orig/arch/x86_64/kernel/setup.c
+++ linux-2.6.22-rc-mm/arch/x86_64/kernel/setup.c
@@ -949,7 +949,7 @@ static int show_cpuinfo(struct seq_file
/* Other (Linux-defined) */
"cxmmx", NULL, "cyrix_arr", "centaur_mcr", NULL,
"constant_tsc", NULL, NULL,
- "up", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ "up", NULL, NULL, NULL, "ida", NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
Index: linux-2.6.22-rc-mm/include/asm-i386/cpufeature.h
===================================================================
--- linux-2.6.22-rc-mm.orig/include/asm-i386/cpufeature.h
+++ linux-2.6.22-rc-mm/include/asm-i386/cpufeature.h
@@ -81,6 +81,7 @@
#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
#define X86_FEATURE_LAPIC_TIMER_BROKEN (3*32+ 14) /* lapic timer broken in C1 */
#define X86_FEATURE_SYNC_RDTSC (3*32+15) /* RDTSC synchronizes the CPU */
+#define X86_FEATURE_IDA (3*32+16) /* Intel Dynamic Acceleration */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
Index: linux-2.6.22-rc-mm/include/asm-x86_64/cpufeature.h
===================================================================
--- linux-2.6.22-rc-mm.orig/include/asm-x86_64/cpufeature.h
+++ linux-2.6.22-rc-mm/include/asm-x86_64/cpufeature.h
@@ -70,6 +70,7 @@
#define X86_FEATURE_ARCH_PERFMON (3*32+9) /* Intel Architectural PerfMon */
#define X86_FEATURE_PEBS (3*32+10) /* Precise-Event Based Sampling */
#define X86_FEATURE_BTS (3*32+11) /* Branch Trace Store */
+#define X86_FEATURE_IDA (3*32+12) /* Intel Dynamic Acceleration */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
Index: linux-2.6.22-rc-mm/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
===================================================================
--- linux-2.6.22-rc-mm.orig/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ linux-2.6.22-rc-mm/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -58,6 +58,7 @@ enum {
#define INTEL_MSR_RANGE (0xffff)
#define CPUID_6_ECX_APERFMPERF_CAPABILITY (0x1)
+#define CPUID_6_EAX_IDA_CAPABILITY (0x2)
struct acpi_cpufreq_data {
struct acpi_processor_performance *acpi_data;
@@ -699,10 +700,20 @@ static int acpi_cpufreq_cpu_init(struct
/* Check for APERF/MPERF support in hardware */
if (c->x86_vendor == X86_VENDOR_INTEL && c->cpuid_level >= 6) {
- unsigned int ecx;
+ unsigned int eax, ecx;
ecx = cpuid_ecx(6);
if (ecx & CPUID_6_ECX_APERFMPERF_CAPABILITY)
acpi_cpufreq_driver.getavg = get_measured_perf;
+
+ eax = cpuid_eax(6);
+ if (eax & CPUID_6_EAX_IDA_CAPABILITY) {
+ unsigned int i;
+
+ for_each_cpu_mask(i, policy->cpus) {
+ struct cpuinfo_x86 *c = &cpu_data[i];
+ set_bit(X86_FEATURE_IDA, c->x86_capability);
+ }
+ }
}
dprintk("CPU%u - ACPI performance management activated.\n", cpu);
-
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