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| author | Robert Richter <robert.richter@amd.com> | 2009-07-09 19:23:50 +0200 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2009-07-20 16:43:18 +0200 |
| commit | 6bfccd099c2841e1c42530f1b6d2553bfa13be3a (patch) | |
| tree | 8452ce819376efe5e1d755bb548a886ea09b6219 /arch/x86/oprofile/nmi_int.c | |
| parent | x86/oprofile: Use per_cpu() instead of __get_cpu_var() (diff) | |
| download | linux-6bfccd099c2841e1c42530f1b6d2553bfa13be3a.tar.xz linux-6bfccd099c2841e1c42530f1b6d2553bfa13be3a.zip | |
x86/oprofile: Fix initialization of switch_index
Variable switch_index must be initialized for each cpu. This patch
fixes the initialization by moving it to the per-cpu init function
nmi_cpu_setup().
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/x86/oprofile/nmi_int.c')
| -rw-r--r-- | arch/x86/oprofile/nmi_int.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index 8cd4658370be..b211d335e075 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -160,7 +160,7 @@ static int allocate_msrs(void) #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX -static void nmi_setup_cpu_mux(struct op_msrs const * const msrs) +static void nmi_cpu_setup_mux(int cpu, struct op_msrs const * const msrs) { int i; struct op_msr *multiplex = msrs->multiplex; @@ -173,8 +173,15 @@ static void nmi_setup_cpu_mux(struct op_msrs const * const msrs) multiplex[i].saved = 0; } } + + per_cpu(switch_index, cpu) = 0; } +#else + +static inline void +nmi_cpu_setup_mux(int cpu, struct op_msrs const * const msrs) { } + #endif static void nmi_cpu_setup(void *dummy) @@ -184,9 +191,7 @@ static void nmi_cpu_setup(void *dummy) nmi_cpu_save_registers(msrs); spin_lock(&oprofilefs_lock); model->setup_ctrs(model, msrs); -#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX - nmi_setup_cpu_mux(msrs); -#endif + nmi_cpu_setup_mux(cpu, msrs); spin_unlock(&oprofilefs_lock); per_cpu(saved_lvtpc, cpu) = apic_read(APIC_LVTPC); apic_write(APIC_LVTPC, APIC_DM_NMI); @@ -662,9 +667,6 @@ int __init op_nmi_init(struct oprofile_operations *ops) register_cpu_notifier(&oprofile_cpu_nb); #endif /* default values, can be overwritten by model */ -#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX - __raw_get_cpu_var(switch_index) = 0; -#endif ops->create_files = nmi_create_files; ops->setup = nmi_setup; ops->shutdown = nmi_shutdown; |