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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-24 08:48:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-24 08:48:17 -0700
commitef54b1bb2e4de212a89a2692a7b2efd70b5fb559 (patch)
tree41f8a3f0b6bc234efb5151d7b6852babe7fe75a6 /arch/x86
parent9fe9293d14e8418f29136216f0180f47270a916a (diff)
parent1162cf6bc6c4650943735438e2be0785ea40a3c6 (diff)
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (34 commits) ACPI, i915: Register ACPI video even when not modesetting Revert "ACPICA: delete check for AML access to port 0x81-83" I/O port protection: update for windows compatibility. sony-laptop: always try to unblock rfkill on load sony-laptop: fix bogus error message display on resume ACPI: EC: Fix ACPI EC resume non-query interrupt message sony-laptop: SNC input event 38 fix sony-laptop: SNC 127 Initialization Fix sony-laptop: Duplicate SNC 127 Event Fix ACPI: prevent processor.max_cstate=0 boot crash ACPI/hpet: prevent boot hang when hpet=force used on ICH-4M ACPI: delete obsolete "bus master activity" proc field ACPI: idle: mark_tsc_unstable() at init-time, not run-time ACPI: add /sys/firmware/acpi/interrupts/sci_not counter ACPI video: fix an error when the brightness levels on AC and on Battery are same acpi-cpufreq: Do not let get_measured perf depend on internal variable acpi-cpufreq: style-only: add parens to math expression acpi-cpufreq: Cleanup: Use printk_once x86, acpi_cpufreq: Fix the NULL pointer dereference in get_measured_perf thinkpad-acpi: bump up version to 0.23 ...
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index ecdb682ab51..208ecf6643d 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -65,14 +65,18 @@ enum {
struct acpi_cpufreq_data {
struct acpi_processor_performance *acpi_data;
struct cpufreq_frequency_table *freq_table;
- unsigned int max_freq;
unsigned int resume;
unsigned int cpu_feature;
- u64 saved_aperf, saved_mperf;
};
static DEFINE_PER_CPU(struct acpi_cpufreq_data *, drv_data);
+struct acpi_msr_data {
+ u64 saved_aperf, saved_mperf;
+};
+
+static DEFINE_PER_CPU(struct acpi_msr_data, msr_data);
+
DEFINE_TRACE(power_mark);
/* acpi_perf_data is a pointer to percpu data. */
@@ -287,11 +291,11 @@ static unsigned int get_measured_perf(struct cpufreq_policy *policy,
return 0;
cur.aperf.whole = readin.aperf.whole -
- per_cpu(drv_data, cpu)->saved_aperf;
+ per_cpu(msr_data, cpu).saved_aperf;
cur.mperf.whole = readin.mperf.whole -
- per_cpu(drv_data, cpu)->saved_mperf;
- per_cpu(drv_data, cpu)->saved_aperf = readin.aperf.whole;
- per_cpu(drv_data, cpu)->saved_mperf = readin.mperf.whole;
+ per_cpu(msr_data, cpu).saved_mperf;
+ per_cpu(msr_data, cpu).saved_aperf = readin.aperf.whole;
+ per_cpu(msr_data, cpu).saved_mperf = readin.mperf.whole;
#ifdef __i386__
/*
@@ -335,7 +339,7 @@ static unsigned int get_measured_perf(struct cpufreq_policy *policy,
#endif
- retval = per_cpu(drv_data, policy->cpu)->max_freq * perf_percent / 100;
+ retval = (policy->cpuinfo.max_freq * perf_percent) / 100;
return retval;
}
@@ -688,16 +692,11 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
/* Check for high latency (>20uS) from buggy BIOSes, like on T42 */
if (perf->control_register.space_id == ACPI_ADR_SPACE_FIXED_HARDWARE &&
policy->cpuinfo.transition_latency > 20 * 1000) {
- static int print_once;
policy->cpuinfo.transition_latency = 20 * 1000;
- if (!print_once) {
- print_once = 1;
- printk(KERN_INFO "Capping off P-state tranision latency"
- " at 20 uS\n");
- }
+ printk_once(KERN_INFO "Capping off P-state tranision"
+ " latency at 20 uS\n");
}
- data->max_freq = perf->states[0].core_frequency * 1000;
/* table init */
for (i = 0; i < perf->state_count; i++) {
if (i > 0 && perf->states[i].core_frequency >=
@@ -716,6 +715,9 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
if (result)
goto err_freqfree;
+ if (perf->states[0].core_frequency * 1000 != policy->cpuinfo.max_freq)
+ printk(KERN_WARNING FW_WARN "P-state 0 is not max freq\n");
+
switch (perf->control_register.space_id) {
case ACPI_ADR_SPACE_SYSTEM_IO:
/* Current speed is unknown and not detectable by IO port */