diff options
Diffstat (limited to 'arch/mips/oprofile/op_model_mipsxx.c')
| -rw-r--r-- | arch/mips/oprofile/op_model_mipsxx.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c index d36b64dfcb2..1d1eee407fa 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"); |