Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] [3/4] x86: MCE: Factor out duplicated struct mce setup code into a single function | Date | Thu, 12 Feb 2009 13:43:22 +0100 (CET) |
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Impact: cleanup
This merely factors out duplicated code to set up the initial struct mce state into a single function.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
--- arch/x86/include/asm/mce.h | 3 ++- arch/x86/kernel/cpu/mcheck/mce_64.c | 23 ++++++++++++++--------- arch/x86/kernel/cpu/mcheck/mce_amd_64.c | 4 +--- arch/x86/kernel/cpu/mcheck/mce_intel_64.c | 2 +- 4 files changed, 18 insertions(+), 14 deletions(-)
Index: linux/arch/x86/kernel/cpu/mcheck/mce_64.c =================================================================== --- linux.orig/arch/x86/kernel/cpu/mcheck/mce_64.c 2009-02-12 11:30:51.000000000 +0100 +++ linux/arch/x86/kernel/cpu/mcheck/mce_64.c 2009-02-12 12:10:19.000000000 +0100 @@ -65,6 +65,14 @@ static DECLARE_WAIT_QUEUE_HEAD(mce_wait); +/* Do initial initialization of a struct mce */ +void mce_setup(struct mce *m) +{ + memset(m, 0, sizeof(struct mce)); + m->cpu = smp_processor_id(); + rdtscll(m->tsc); +} + /* * Lockless MCE logging infrastructure. * This avoids deadlocks on printk locks without having to break locks. Also @@ -208,8 +216,8 @@ || !banks) goto out2; - memset(&m, 0, sizeof(struct mce)); - m.cpu = smp_processor_id(); + mce_setup(&m); + rdmsrl(MSR_IA32_MCG_STATUS, m.mcgstatus); /* if the restart IP is not valid, we're done for */ if (!(m.mcgstatus & MCG_STATUS_RIPV)) @@ -225,7 +233,6 @@ m.misc = 0; m.addr = 0; m.bank = i; - m.tsc = 0; rdmsrl(MSR_IA32_MC0_STATUS + i*4, m.status); if ((m.status & MCI_STATUS_VAL) == 0) @@ -252,8 +259,8 @@ rdmsrl(MSR_IA32_MC0_ADDR + i*4, m.addr); mce_get_rip(&m, regs); - if (error_code >= 0) - rdtscll(m.tsc); + if (error_code < 0) + m.tsc = 0; if (error_code != -2) mce_log(&m); @@ -341,15 +348,13 @@ * and historically has been the register value of the * MSR_IA32_THERMAL_STATUS (Intel) msr. */ -void mce_log_therm_throt_event(unsigned int cpu, __u64 status) +void mce_log_therm_throt_event(__u64 status) { struct mce m; - memset(&m, 0, sizeof(m)); - m.cpu = cpu; + mce_setup(&m); m.bank = MCE_THERMAL_BANK; m.status = status; - rdtscll(m.tsc); mce_log(&m); } #endif /* CONFIG_X86_MCE_INTEL */ Index: linux/arch/x86/include/asm/mce.h =================================================================== --- linux.orig/arch/x86/include/asm/mce.h 2009-02-12 11:30:51.000000000 +0100 +++ linux/arch/x86/include/asm/mce.h 2009-02-12 12:10:19.000000000 +0100 @@ -90,6 +90,7 @@ #include <asm/atomic.h> +void mce_setup(struct mce *m); void mce_log(struct mce *m); DECLARE_PER_CPU(struct sys_device, device_mce); extern void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu); @@ -106,7 +107,7 @@ static inline void mce_amd_feature_init(struct cpuinfo_x86 *c) { } #endif -void mce_log_therm_throt_event(unsigned int cpu, __u64 status); +void mce_log_therm_throt_event(__u64 status); extern atomic_t mce_entry; Index: linux/arch/x86/kernel/cpu/mcheck/mce_intel_64.c =================================================================== --- linux.orig/arch/x86/kernel/cpu/mcheck/mce_intel_64.c 2009-02-12 11:30:48.000000000 +0100 +++ linux/arch/x86/kernel/cpu/mcheck/mce_intel_64.c 2009-02-12 12:10:17.000000000 +0100 @@ -24,7 +24,7 @@ rdmsrl(MSR_IA32_THERM_STATUS, msr_val); if (therm_throt_process(msr_val & 1)) - mce_log_therm_throt_event(smp_processor_id(), msr_val); + mce_log_therm_throt_event(msr_val); inc_irq_stat(irq_thermal_count); irq_exit(); Index: linux/arch/x86/kernel/cpu/mcheck/mce_amd_64.c =================================================================== --- linux.orig/arch/x86/kernel/cpu/mcheck/mce_amd_64.c 2009-02-12 11:30:48.000000000 +0100 +++ linux/arch/x86/kernel/cpu/mcheck/mce_amd_64.c 2009-02-12 12:10:19.000000000 +0100 @@ -197,9 +197,7 @@ exit_idle(); irq_enter(); - memset(&m, 0, sizeof(m)); - rdtscll(m.tsc); - m.cpu = smp_processor_id(); + mce_setup(&m); /* assume first bank caused it */ for (bank = 0; bank < NR_BANKS; ++bank) {
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