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path: root/drivers/oprofile/cpu_buffer.c
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Diffstat (limited to 'drivers/oprofile/cpu_buffer.c')
-rw-r--r--drivers/oprofile/cpu_buffer.c39
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index 1b6590746be4..ddba9d01f09b 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