diff options
Diffstat (limited to 'drivers/oprofile/cpu_buffer.c')
| -rw-r--r-- | drivers/oprofile/cpu_buffer.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c index 1b65907..ddba9d0 100644 --- a/drivers/oprofile/cpu_buffer.c +++ b/drivers/oprofile/cpu_buffer.c @@ -363,31 +363,38 @@ void oprofile_add_sample(struct pt_regs * const regs, unsigned long event) #ifdef CONFIG_OPROFILE_IBS -void oprofile_add_ibs_sample(struct pt_regs * const regs, - unsigned int * const ibs_sample, int ibs_code) +/* + * Add samples with data to the ring buffer. + * + * Use op_cpu_buffer_add_data(&entry, val) to add data and + * op_cpu_buffer_write_commit(&entry) to commit the sample. + */ +void oprofile_add_data(struct op_entry *entry, struct pt_regs * const regs, + unsigned long pc, int code, int size) { + struct op_sample *sample; int is_kernel = !user_mode(regs); struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer); - int fail = 0; cpu_buf->sample_received++; - /* backtraces disabled for ibs */ - fail = fail || op_add_code(cpu_buf, 0, is_kernel, current); + /* no backtraces for samples with data */ + if (op_add_code(cpu_buf, 0, is_kernel, current)) + goto fail; - fail = fail || op_add_sample(cpu_buf, ESCAPE_CODE, ibs_code); - fail = fail || op_add_sample(cpu_buf, ibs_sample[0], ibs_sample[1]); - fail = fail || op_add_sample(cpu_buf, ibs_sample[2], ibs_sample[3]); - fail = fail || op_add_sample(cpu_buf, ibs_sample[4], ibs_sample[5]); + sample = op_cpu_buffer_write_reserve(entry, size + 2); + if (!sample) + goto fail; + sample->eip = ESCAPE_CODE; + sample->event = 0; /* no flags */ - if (ibs_code == IBS_OP_BEGIN) { - fail = fail || op_add_sample(cpu_buf, ibs_sample[6], ibs_sample[7]); - fail = fail || op_add_sample(cpu_buf, ibs_sample[8], ibs_sample[9]); - fail = fail || op_add_sample(cpu_buf, ibs_sample[10], ibs_sample[11]); - } + op_cpu_buffer_add_data(entry, code); + op_cpu_buffer_add_data(entry, pc); + + return; - if (fail) - cpu_buf->sample_lost_overflow++; +fail: + cpu_buf->sample_lost_overflow++; } #endif |