Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[net-next-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 ab1a8a89b984ef0e9c7ea31ff791ef272fa8103f..45506d5dd8df7e06f0e35ae8c0db18927ffc00e6 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1632,6 +1632,7 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_events *cpuc)
 
        data.period     = event->hw.last_period;
        data.addr       = 0;
+       data.raw        = NULL;
        regs.ip         = 0;
 
        /*
@@ -1749,6 +1750,7 @@ static int p6_pmu_handle_irq(struct pt_regs *regs)
        u64 val;
 
        data.addr = 0;
+       data.raw = NULL;
 
        cpuc = &__get_cpu_var(cpu_hw_events);
 
@@ -1794,6 +1796,7 @@ static int intel_pmu_handle_irq(struct pt_regs *regs)
        u64 ack, status;
 
        data.addr = 0;
+       data.raw = NULL;
 
        cpuc = &__get_cpu_var(cpu_hw_events);
 
@@ -1857,6 +1860,7 @@ static int amd_pmu_handle_irq(struct pt_regs *regs)
        u64 val;
 
        data.addr = 0;
+       data.raw = NULL;
 
        cpuc = &__get_cpu_var(cpu_hw_events);
 
@@ -2062,12 +2066,6 @@ static __init int p6_pmu_init(void)
 
        x86_pmu = p6_pmu;
 
-       if (!cpu_has_apic) {
-               pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n");
-               pr_info("no hardware sampling interrupt available.\n");
-               x86_pmu.apic = 0;
-       }
-
        return 0;
 }
 
@@ -2159,6 +2157,16 @@ static __init int amd_pmu_init(void)
        return 0;
 }
 
+static void __init pmu_check_apic(void)
+{
+       if (cpu_has_apic)
+               return;
+
+       x86_pmu.apic = 0;
+       pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n");
+       pr_info("no hardware sampling interrupt available.\n");
+}
+
 void __init init_hw_perf_events(void)
 {
        int err;
@@ -2180,6 +2188,8 @@ void __init init_hw_perf_events(void)
                return;
        }
 
+       pmu_check_apic();
+
        pr_cont("%s PMU driver.\n", x86_pmu.name);
 
        if (x86_pmu.num_events > X86_PMC_MAX_GENERIC) {
@@ -2287,7 +2297,7 @@ void callchain_store(struct perf_callchain_entry *entry, u64 ip)
 
 static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_irq_entry);
 static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_nmi_entry);
-static DEFINE_PER_CPU(int, in_nmi_frame);
+static DEFINE_PER_CPU(int, in_ignored_frame);
 
 
 static void
@@ -2303,8 +2313,9 @@ static void backtrace_warning(void *data, char *msg)
 
 static int backtrace_stack(void *data, char *name)
 {
-       per_cpu(in_nmi_frame, smp_processor_id()) =
-                       x86_is_stack_id(NMI_STACK, name);
+       per_cpu(in_ignored_frame, smp_processor_id()) =
+                       x86_is_stack_id(NMI_STACK, name) ||
+                       x86_is_stack_id(DEBUG_STACK, name);
 
        return 0;
 }
@@ -2313,7 +2324,7 @@ static void backtrace_address(void *data, unsigned long addr, int reliable)
 {
        struct perf_callchain_entry *entry = data;
 
-       if (per_cpu(in_nmi_frame, smp_processor_id()))
+       if (per_cpu(in_ignored_frame, smp_processor_id()))
                return;
 
        if (reliable)