diff options
author | James Morris <jmorris@namei.org> | 2009-08-20 09:18:42 +1000 |
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committer | James Morris <jmorris@namei.org> | 2009-08-20 09:18:42 +1000 |
commit | ece13879e74313e62109e0755dd3d4f172df89e2 (patch) | |
tree | 1fe96ab392c1ff203a6fb3f67ed0ed577056572e /arch/x86/kernel/cpu/mcheck/therm_throt.c | |
parent | b08dc3eba0c34027010caeda258f495074ae3a54 (diff) | |
parent | 6c30c53fd5ae6a99a23ad78e90c428d2c8ffb07f (diff) |
Merge branch 'master' into next
Conflicts:
security/Kconfig
Manual fix.
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'arch/x86/kernel/cpu/mcheck/therm_throt.c')
-rw-r--r-- | arch/x86/kernel/cpu/mcheck/therm_throt.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c index bff8dd191dd..5957a93e517 100644 --- a/arch/x86/kernel/cpu/mcheck/therm_throt.c +++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c @@ -36,6 +36,7 @@ static DEFINE_PER_CPU(__u64, next_check) = INITIAL_JIFFIES; static DEFINE_PER_CPU(unsigned long, thermal_throttle_count); +static DEFINE_PER_CPU(bool, thermal_throttle_active); static atomic_t therm_throt_en = ATOMIC_INIT(0); @@ -96,27 +97,33 @@ static int therm_throt_process(int curr) { unsigned int cpu = smp_processor_id(); __u64 tmp_jiffs = get_jiffies_64(); + bool was_throttled = __get_cpu_var(thermal_throttle_active); + bool is_throttled = __get_cpu_var(thermal_throttle_active) = curr; - if (curr) + if (is_throttled) __get_cpu_var(thermal_throttle_count)++; - if (time_before64(tmp_jiffs, __get_cpu_var(next_check))) + if (!(was_throttled ^ is_throttled) && + time_before64(tmp_jiffs, __get_cpu_var(next_check))) return 0; __get_cpu_var(next_check) = tmp_jiffs + CHECK_INTERVAL; /* if we just entered the thermal event */ - if (curr) { + if (is_throttled) { printk(KERN_CRIT "CPU%d: Temperature above threshold, " - "cpu clock throttled (total events = %lu)\n", cpu, - __get_cpu_var(thermal_throttle_count)); + "cpu clock throttled (total events = %lu)\n", + cpu, __get_cpu_var(thermal_throttle_count)); add_taint(TAINT_MACHINE_CHECK); - } else { - printk(KERN_CRIT "CPU%d: Temperature/speed normal\n", cpu); + return 1; + } + if (was_throttled) { + printk(KERN_INFO "CPU%d: Temperature/speed normal\n", cpu); + return 1; } - return 1; + return 0; } #ifdef CONFIG_SYSFS |