diff options
Diffstat (limited to 'arch/mips/oprofile')
| -rw-r--r-- | arch/mips/oprofile/common.c | 3 | ||||
| -rw-r--r-- | arch/mips/oprofile/op_impl.h | 4 | ||||
| -rw-r--r-- | arch/mips/oprofile/op_model_mipsxx.c | 22 |
3 files changed, 25 insertions, 4 deletions
diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c index dd2cc42..53f9889 100644 --- a/arch/mips/oprofile/common.c +++ b/arch/mips/oprofile/common.c @@ -75,7 +75,10 @@ int __init oprofile_arch_init(struct oprofile_operations *ops) int res; switch (current_cpu_data.cputype) { + case CPU_5KC: + case CPU_20KC: case CPU_24K: + case CPU_25KF: lmodel = &op_model_mipsxx; break; diff --git a/arch/mips/oprofile/op_impl.h b/arch/mips/oprofile/op_impl.h index f012155..5cfce7d 100644 --- a/arch/mips/oprofile/op_impl.h +++ b/arch/mips/oprofile/op_impl.h @@ -12,8 +12,8 @@ struct pt_regs; -extern void null_perf_irq(struct pt_regs *regs); -extern void (*perf_irq)(struct pt_regs *regs); +extern int null_perf_irq(struct pt_regs *regs); +extern int (*perf_irq)(struct pt_regs *regs); /* Per-counter configuration as set via oprofilefs. */ struct op_counter_config { diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c index d36b64d..1d1eee4 100644 --- a/arch/mips/oprofile/op_model_mipsxx.c +++ b/arch/mips/oprofile/op_model_mipsxx.c @@ -114,11 +114,12 @@ static void mipsxx_cpu_stop(void *args) } } -static void mipsxx_perfcount_handler(struct pt_regs *regs) +static int mipsxx_perfcount_handler(struct pt_regs *regs) { unsigned int counters = op_model_mipsxx.num_counters; unsigned int control; unsigned int counter; + int handled = 0; switch (counters) { #define HANDLE_COUNTER(n) \ @@ -129,12 +130,15 @@ static void mipsxx_perfcount_handler(struct pt_regs *regs) (counter & M_COUNTER_OVERFLOW)) { \ oprofile_add_sample(regs, n); \ write_c0_perfcntr ## n(reg.counter[n]); \ + handled = 1; \ } HANDLE_COUNTER(3) HANDLE_COUNTER(2) HANDLE_COUNTER(1) HANDLE_COUNTER(0) } + + return handled; } #define M_CONFIG1_PC (1 << 4) @@ -176,17 +180,31 @@ static int __init mipsxx_init(void) int counters; counters = n_counters(); - if (counters == 0) + if (counters == 0) { + printk(KERN_ERR "Oprofile: CPU has no performance counters\n"); return -ENODEV; + } reset_counters(counters); op_model_mipsxx.num_counters = counters; switch (current_cpu_data.cputype) { + case CPU_20KC: + op_model_mipsxx.cpu_type = "mips/20K"; + break; + case CPU_24K: op_model_mipsxx.cpu_type = "mips/24K"; break; + case CPU_25KF: + op_model_mipsxx.cpu_type = "mips/25K"; + break; + + case CPU_5KC: + op_model_mipsxx.cpu_type = "mips/5K"; + break; + default: printk(KERN_ERR "Profiling unsupported for this CPU\n"); |
