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x86/oprofile: Implement mux_clone()
To setup a counter for all cpus, its structure is cloned from cpu 0. This patch implements mux_clone() to do this part for multiplexing data. Signed-off-by: Robert Richter <robert.richter@amd.com>
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parent
5280514471
commit
4d015f79e9
1 changed files with 22 additions and 13 deletions
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@ -264,6 +264,16 @@ static inline void mux_init(struct oprofile_operations *ops)
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ops->switch_events = nmi_switch_event;
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}
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static void mux_clone(int cpu)
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{
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if (!has_mux())
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return;
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memcpy(per_cpu(cpu_msrs, cpu).multiplex,
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per_cpu(cpu_msrs, 0).multiplex,
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sizeof(struct op_msr) * model->num_virt_counters);
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}
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#else
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inline int op_x86_phys_to_virt(int phys) { return phys; }
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@ -272,6 +282,7 @@ static inline int nmi_setup_mux(void) { return 1; }
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static inline void
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nmi_cpu_setup_mux(int cpu, struct op_msrs const * const msrs) { }
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static inline void mux_init(struct oprofile_operations *ops) { }
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static void mux_clone(int cpu) { }
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#endif
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@ -350,20 +361,18 @@ static int nmi_setup(void)
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/* Assume saved/restored counters are the same on all CPUs */
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model->fill_in_addresses(&per_cpu(cpu_msrs, 0));
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for_each_possible_cpu(cpu) {
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if (cpu != 0) {
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memcpy(per_cpu(cpu_msrs, cpu).counters,
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per_cpu(cpu_msrs, 0).counters,
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sizeof(struct op_msr) * model->num_counters);
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if (!cpu)
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continue;
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memcpy(per_cpu(cpu_msrs, cpu).controls,
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per_cpu(cpu_msrs, 0).controls,
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sizeof(struct op_msr) * model->num_controls);
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#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
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memcpy(per_cpu(cpu_msrs, cpu).multiplex,
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per_cpu(cpu_msrs, 0).multiplex,
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sizeof(struct op_msr) * model->num_virt_counters);
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#endif
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}
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memcpy(per_cpu(cpu_msrs, cpu).counters,
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per_cpu(cpu_msrs, 0).counters,
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sizeof(struct op_msr) * model->num_counters);
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memcpy(per_cpu(cpu_msrs, cpu).controls,
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per_cpu(cpu_msrs, 0).controls,
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sizeof(struct op_msr) * model->num_controls);
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mux_clone(cpu);
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}
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on_each_cpu(nmi_cpu_setup, NULL, 1);
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nmi_enabled = 1;
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