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Diffstat (limited to 'drivers/oprofile')
-rw-r--r--drivers/oprofile/buffer_sync.c53
-rw-r--r--drivers/oprofile/cpu_buffer.c39
-rw-r--r--drivers/oprofile/cpu_buffer.h2
3 files changed, 35 insertions, 59 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index f9031d31eeb7..d692fdc1a211 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -318,29 +318,18 @@ static void add_trace_begin(void)
#ifdef CONFIG_OPROFILE_IBS
-#define IBS_FETCH_CODE_SIZE 2
-#define IBS_OP_CODE_SIZE 5
-
-/*
- * Add IBS fetch and op entries to event buffer
- */
-static void add_ibs_begin(int cpu, int code, struct mm_struct *mm)
+static void add_data(struct op_entry *entry, struct mm_struct *mm)
{
- unsigned long pc;
- int i, count;
- unsigned long cookie = 0;
+ unsigned long code, pc, val;
+ unsigned long cookie;
off_t offset;
- struct op_entry entry;
- struct op_sample *sample;
- sample = op_cpu_buffer_read_entry(&entry, cpu);
- if (!sample)
+ if (!op_cpu_buffer_get_data(entry, &code))
+ return;
+ if (!op_cpu_buffer_get_data(entry, &pc))
+ return;
+ if (!op_cpu_buffer_get_size(entry))
return;
- pc = sample->eip;
-
-#ifdef __LP64__
- pc += sample->event << 32;
-#endif
if (mm) {
cookie = lookup_dcookie(mm, pc, &offset);
@@ -362,24 +351,8 @@ static void add_ibs_begin(int cpu, int code, struct mm_struct *mm)
add_event_entry(code);
add_event_entry(offset); /* Offset from Dcookie */
- /* we send the Dcookie offset, but send the raw Linear Add also*/
- add_event_entry(sample->eip);
- add_event_entry(sample->event);
-
- if (code == IBS_FETCH_CODE)
- count = IBS_FETCH_CODE_SIZE; /*IBS FETCH is 2 int64s*/
- else
- count = IBS_OP_CODE_SIZE; /*IBS OP is 5 int64s*/
-
- for (i = 0; i < count; i++) {
- sample = op_cpu_buffer_read_entry(&entry, cpu);
- if (!sample)
- return;
- add_event_entry(sample->eip);
- add_event_entry(sample->event);
- }
-
- return;
+ while (op_cpu_buffer_get_data(entry, &val))
+ add_event_entry(val);
}
#endif
@@ -572,10 +545,8 @@ void sync_buffer(int cpu)
add_user_ctx_switch(new, cookie);
}
#ifdef CONFIG_OPROFILE_IBS
- if (flags & IBS_FETCH_BEGIN)
- add_ibs_begin(cpu, IBS_FETCH_CODE, mm);
- if (flags & IBS_OP_BEGIN)
- add_ibs_begin(cpu, IBS_OP_CODE, mm);
+ if (op_cpu_buffer_get_size(&entry))
+ add_data(&entry, mm);
#endif
continue;
}
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
diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h
index f34376046573..525cc4d13d8d 100644
--- a/drivers/oprofile/cpu_buffer.h
+++ b/drivers/oprofile/cpu_buffer.h
@@ -115,7 +115,5 @@ int op_cpu_buffer_get_data(struct op_entry *entry, unsigned long *val)
#define IS_KERNEL (1UL << 1)
#define TRACE_BEGIN (1UL << 2)
#define USER_CTX_SWITCH (1UL << 3)
-#define IBS_FETCH_BEGIN (1UL << 4)
-#define IBS_OP_BEGIN (1UL << 5)
#endif /* OPROFILE_CPU_BUFFER_H */