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author | Robert Richter <robert.richter@amd.com> | 2009-07-09 21:42:51 +0200 |
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committer | Robert Richter <robert.richter@amd.com> | 2009-07-20 16:43:21 +0200 |
commit | 4d015f79e972cea1761cfee8872b1c0992ccd8b2 (patch) | |
tree | 8cecbab7a4c9146fd43b077e2d99a9cd4d5bbbb8 | |
parent | 5280514471c2803776701c43c027038decac1103 (diff) | |
download | kernel_samsung_smdk4412-4d015f79e972cea1761cfee8872b1c0992ccd8b2.zip kernel_samsung_smdk4412-4d015f79e972cea1761cfee8872b1c0992ccd8b2.tar.gz kernel_samsung_smdk4412-4d015f79e972cea1761cfee8872b1c0992ccd8b2.tar.bz2 |
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>
-rw-r--r-- | arch/x86/oprofile/nmi_int.c | 37 |
1 files changed, 23 insertions, 14 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index f0fb447..da6d2ab 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -264,6 +264,16 @@ static inline void mux_init(struct oprofile_operations *ops) ops->switch_events = nmi_switch_event; } +static void mux_clone(int cpu) +{ + if (!has_mux()) + return; + + memcpy(per_cpu(cpu_msrs, cpu).multiplex, + per_cpu(cpu_msrs, 0).multiplex, + sizeof(struct op_msr) * model->num_virt_counters); +} + #else inline int op_x86_phys_to_virt(int phys) { return phys; } @@ -272,6 +282,7 @@ static inline int nmi_setup_mux(void) { return 1; } static inline void nmi_cpu_setup_mux(int cpu, struct op_msrs const * const msrs) { } static inline void mux_init(struct oprofile_operations *ops) { } +static void mux_clone(int cpu) { } #endif @@ -350,20 +361,18 @@ static int nmi_setup(void) /* Assume saved/restored counters are the same on all CPUs */ model->fill_in_addresses(&per_cpu(cpu_msrs, 0)); for_each_possible_cpu(cpu) { - if (cpu != 0) { - memcpy(per_cpu(cpu_msrs, cpu).counters, - per_cpu(cpu_msrs, 0).counters, - sizeof(struct op_msr) * model->num_counters); - - memcpy(per_cpu(cpu_msrs, cpu).controls, - per_cpu(cpu_msrs, 0).controls, - sizeof(struct op_msr) * model->num_controls); -#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX - memcpy(per_cpu(cpu_msrs, cpu).multiplex, - per_cpu(cpu_msrs, 0).multiplex, - sizeof(struct op_msr) * model->num_virt_counters); -#endif - } + if (!cpu) + continue; + + memcpy(per_cpu(cpu_msrs, cpu).counters, + per_cpu(cpu_msrs, 0).counters, + sizeof(struct op_msr) * model->num_counters); + + memcpy(per_cpu(cpu_msrs, cpu).controls, + per_cpu(cpu_msrs, 0).controls, + sizeof(struct op_msr) * model->num_controls); + + mux_clone(cpu); } on_each_cpu(nmi_cpu_setup, NULL, 1); nmi_enabled = 1; |