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Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[sfrench/cifs-2.6.git]
/
arch
/
x86
/
kernel
/
cpu
/
perf_event.c
diff --git
a/arch/x86/kernel/cpu/perf_event.c
b/arch/x86/kernel/cpu/perf_event.c
index 87eab4a27dfccc0ad75d17338d6a8be5c5a1a1e0..eed3673a8656f5688d54f6b4d72fd9774c831fcb 100644
(file)
--- a/
arch/x86/kernel/cpu/perf_event.c
+++ b/
arch/x86/kernel/cpu/perf_event.c
@@
-500,12
+500,17
@@
static bool check_hw_exists(void)
return true;
bios_fail:
return true;
bios_fail:
- printk(KERN_CONT "Broken BIOS detected, using software events only.\n");
+ /*
+ * We still allow the PMU driver to operate:
+ */
+ printk(KERN_CONT "Broken BIOS detected, complain to your hardware vendor.\n");
printk(KERN_ERR FW_BUG "the BIOS has corrupted hw-PMU resources (MSR %x is %Lx)\n", reg, val);
printk(KERN_ERR FW_BUG "the BIOS has corrupted hw-PMU resources (MSR %x is %Lx)\n", reg, val);
- return false;
+
+ return true;
msr_fail:
printk(KERN_CONT "Broken PMU hardware detected, using software events only.\n");
msr_fail:
printk(KERN_CONT "Broken PMU hardware detected, using software events only.\n");
+
return false;
}
return false;
}
@@
-912,7
+917,7
@@
static inline void x86_assign_hw_event(struct perf_event *event,
hwc->event_base = 0;
} else if (hwc->idx >= X86_PMC_IDX_FIXED) {
hwc->config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL;
hwc->event_base = 0;
} else if (hwc->idx >= X86_PMC_IDX_FIXED) {
hwc->config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL;
- hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0;
+ hwc->event_base = MSR_ARCH_PERFMON_FIXED_CTR0
+ (hwc->idx - X86_PMC_IDX_FIXED)
;
} else {
hwc->config_base = x86_pmu_config_addr(hwc->idx);
hwc->event_base = x86_pmu_event_addr(hwc->idx);
} else {
hwc->config_base = x86_pmu_config_addr(hwc->idx);
hwc->event_base = x86_pmu_event_addr(hwc->idx);