1 files changed, 0 insertions, 173 deletions

diff --git a/meta-moblin/packages/linux/linux-moblin-2.6.31.5/linux-2.6.32-acpi-cstate-fixup.patch b/meta-moblin/packages/linux/linux-moblin-2.6.31.5/linux-2.6.32-acpi-cstate-fixup.patch
deleted file mode 100644
index 6a1204d4c1..0000000000
--- a/meta-moblin/packages/linux/linux-moblin-2.6.31.5/linux-2.6.32-acpi-cstate-fixup.patch
+++ /dev/null
@@ -1,173 +0,0 @@
-From edeae90d635501a632efa0c7fe0667aa2cbe29be Mon Sep 17 00:00:00 2001
-From: Arjan van de Ven <arjan@linux.intel.com>
-Date: Mon, 28 Sep 2009 15:14:04 +0200
-Subject: [PATCH] acpi: Provide a set of tables to check the BIOS tables for correctness
-
-Today, the BIOS provides us with latency information for each C state.
-Unfortunately this information is sometimes put into the BIOS by
-apprentice BIOS programmers in a hurry, and as a result, it occasionally
-contains utter garbage.
-
-This patch adds a table based verification; if the CPU is known in the table,
-the values the BIOS provides to us are corrected for the apprentice-factor
-so that the CPUIDLE code can rely on the latency and break-even values
-to be reasonably sane.
-
-Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
----
- drivers/acpi/Makefile                |    2 +-
- drivers/acpi/processor_idle.c        |    3 +
- drivers/acpi/processor_mwait_table.c |  110 ++++++++++++++++++++++++++++++++++
- include/acpi/processor.h             |    3 +
- 4 files changed, 117 insertions(+), 1 deletions(-)
- create mode 100644 drivers/acpi/processor_mwait_table.c
-
-diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
-index 82cd49d..ab56b28 100644
---- a/drivers/acpi/Makefile
-+++ b/drivers/acpi/Makefile
-@@ -60,5 +60,5 @@ obj-$(CONFIG_ACPI_POWER_METER)        += power_meter.o
- 
- # processor has its own "processor." module_param namespace
- processor-y                    := processor_core.o processor_throttling.o
--processor-y                    += processor_idle.o processor_thermal.o
-+processor-y                    += processor_idle.o processor_thermal.o processor_mwait_table.o
- processor-$(CONFIG_CPU_FREQ)   += processor_perflib.o
-diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
-index cc61a62..db444a0 100644
---- a/drivers/acpi/processor_idle.c
-+++ b/drivers/acpi/processor_idle.c
-@@ -1088,6 +1088,9 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
-                state->target_residency = cx->latency * latency_factor;
-                state->power_usage = cx->power;
- 
-+               if (cx->entry_method == ACPI_CSTATE_FFH)
-+                       acpi_verify_mwait_data(state, cx);
-+
-                state->flags = 0;
-                switch (cx->type) {
-                        case ACPI_STATE_C1:
-diff --git a/drivers/acpi/processor_mwait_table.c b/drivers/acpi/processor_mwait_table.c
-new file mode 100644
-index 0000000..f29c28c
---- /dev/null
-+++ b/drivers/acpi/processor_mwait_table.c
-@@ -0,0 +1,102 @@
-+/*
-+ * processor_mwait_table.c: BIOS table verification/correction
-+ *
-+ * (C) Copyright 2009 Intel Corporation
-+ * Authors:
-+ *     Arjan van de Ven <arjan@linux.intel.com>
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; version 2
-+ * of the License.
-+ */
-+
-+#include <asm/processor.h>
-+#include <linux/acpi.h>
-+#include <acpi/processor.h>
-+#include <linux/cpuidle.h>
-+
-+
-+#define ATLEAST 1
-+#define ATMOST  2
-+#define EXACTLY 3
-+
-+#define MAX_ENTRIES 12
-+
-+struct mwait_entry {
-+       unsigned int            mwait_value;
-+       unsigned long           exit_latency;
-+       unsigned long           break_even_point;
-+       int                     compare_method;
-+};
-+
-+struct cpu_entry {
-+       int                     vendor;
-+       int                     family;
-+       int                     model;
-+
-+       struct mwait_entry      entries[MAX_ENTRIES];   
-+};
-+
-+static struct cpu_entry mwait_entries[] =
-+{
-+  /* Intel "Atom" CPUs  */
-+  {.vendor = X86_VENDOR_INTEL, .family = 6, . model = 28,
-+       .entries = { 
-+                       {0x00,   1,    1, ATLEAST}, 
-+                       {0x10,   2,   20, ATLEAST}, 
-+                       {0x30,  57,  300, ATLEAST}, 
-+                       {0x50,  64, 4000, ATLEAST}, 
-+                  } 
-+  },
-+
-+
-+};
-+
-+
-+static unsigned long 
-+compare_and_set(unsigned long original, unsigned long new, int compare)
-+{
-+       if (compare == EXACTLY)
-+               return new;
-+       if (compare == ATLEAST && new > original)
-+               return new;
-+       if (compare == ATMOST && new < original)
-+               return new;
-+       return original;
-+}
-+
-+
-+void acpi_verify_mwait_data(struct cpuidle_state *state,
-+                           struct acpi_processor_cx *cx)
-+{
-+#if defined(__i386__) || defined(__x86_64__)
-+       int i;
-+
-+       struct cpuinfo_x86 *cpudata = &boot_cpu_data;
-+       
-+       
-+       for (i = 0; i < ARRAY_SIZE(mwait_entries); i++) {
-+               int j;
-+               if (mwait_entries[i].vendor != cpudata->x86_vendor)
-+                       continue;
-+               if (mwait_entries[i].family != cpudata->x86)
-+                       continue;
-+               if (mwait_entries[i].model != cpudata->x86_model)
-+                       continue;
-+               for (j = 0; j < ARRAY_SIZE(mwait_entries[i].entries); j++) {
-+                       if (!mwait_entries[i].entries[j].compare_method)
-+                               continue;
-+                       if (mwait_entries[i].entries[j].mwait_value != cx->address)
-+                               continue;
-+                       state->exit_latency = compare_and_set(state->exit_latency,
-+                               mwait_entries[i].entries[j].exit_latency,
-+                               mwait_entries[i].entries[j].compare_method);
-+                       state->target_residency = compare_and_set(state->target_residency,
-+                               mwait_entries[i].entries[j].break_even_point,
-+                               mwait_entries[i].entries[j].compare_method);
-+                       break;  
-+               }
-+       }
-+#endif
-+}
-diff --git a/include/acpi/processor.h b/include/acpi/processor.h
-index 740ac3a..175e4d1 100644
---- a/include/acpi/processor.h
-+++ b/include/acpi/processor.h
-@@ -352,5 +352,8 @@ static inline void acpi_thermal_cpufreq_exit(void)
-        return;
- }
- #endif
-+extern void acpi_verify_mwait_data(struct cpuidle_state *state,
-+                            struct acpi_processor_cx *cx);
-+
- 
- #endif
--- 
-1.6.2.5
-