diff options
| author | Dmitriy Zavin <dmitriyz@google.com> | 2006-09-26 10:52:42 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:42 +0200 |
| commit | 15d5f8398311f565682959daaca30e3ca7aea600 (patch) | |
| tree | ba38e77782832191dd38e182e99525870f83c085 /arch/x86_64/kernel/mce_intel.c | |
| parent | 3b171672831b9633c2ed8fa94805255cd4d5af19 (diff) | |
[PATCH] x86: Refactor thermal throttle processing
Refactor the event processing (syslog messaging and rate limiting)
into separate file therm_throt.c. This allows consistent reporting
of CPU thermal throttle events.
After ACK'ing the interrupt, if the event is current, the user
(p4.c/mce_intel.c) calls therm_throt_process to log (and rate limit)
the event. If that function returns 1, the user has the option to log
things further (such as to mce_log in x86_64).
AK: minor cleanup
Signed-off-by: Dmitriy Zavin <dmitriyz@google.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64/kernel/mce_intel.c')
| -rw-r--r-- | arch/x86_64/kernel/mce_intel.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/arch/x86_64/kernel/mce_intel.c b/arch/x86_64/kernel/mce_intel.c index 8f533d2c40c..dec11219e27 100644 --- a/arch/x86_64/kernel/mce_intel.c +++ b/arch/x86_64/kernel/mce_intel.c @@ -11,36 +11,21 @@ #include <asm/mce.h> #include <asm/hw_irq.h> #include <asm/idle.h> - -static DEFINE_PER_CPU(unsigned long, next_check); +#include <asm/therm_throt.h> asmlinkage void smp_thermal_interrupt(void) { - struct mce m; + __u64 msr_val; ack_APIC_irq(); exit_idle(); irq_enter(); - if (time_before(jiffies, __get_cpu_var(next_check))) - goto done; - - __get_cpu_var(next_check) = jiffies + HZ*300; - memset(&m, 0, sizeof(m)); - m.cpu = smp_processor_id(); - m.bank = MCE_THERMAL_BANK; - rdtscll(m.tsc); - rdmsrl(MSR_IA32_THERM_STATUS, m.status); - if (m.status & 0x1) { - printk(KERN_EMERG - "CPU%d: Temperature above threshold, cpu clock throttled\n", m.cpu); - add_taint(TAINT_MACHINE_CHECK); - } else { - printk(KERN_EMERG "CPU%d: Temperature/speed normal\n", m.cpu); - } - mce_log(&m); -done: + rdmsrl(MSR_IA32_THERM_STATUS, msr_val); + if (therm_throt_process(msr_val & 1)) + mce_log_therm_throt_event(smp_processor_id(), msr_val); + irq_exit(); } |