tracing: Pass tracing_map_elt to hist_field accessor functions
Some accessor functions, such as for variable references, require access to a corrsponding tracing_map_elt. Add a tracing_map_elt param to the function signature and update the accessor functions accordingly. Link: http://lkml.kernel.org/r/e0f292b068e9e4948da1d5af21b5ae0efa9b5717.1516069914.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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@ -26,8 +26,10 @@
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struct hist_field;
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struct hist_field;
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typedef u64 (*hist_field_fn_t) (struct hist_field *field, void *event,
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typedef u64 (*hist_field_fn_t) (struct hist_field *field,
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struct ring_buffer_event *rbe);
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event);
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#define HIST_FIELD_OPERANDS_MAX 2
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#define HIST_FIELD_OPERANDS_MAX 2
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#define HIST_FIELDS_MAX (TRACING_MAP_FIELDS_MAX + TRACING_MAP_VARS_MAX)
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#define HIST_FIELDS_MAX (TRACING_MAP_FIELDS_MAX + TRACING_MAP_VARS_MAX)
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@ -59,28 +61,36 @@ struct hist_field {
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char *name;
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char *name;
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};
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};
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static u64 hist_field_none(struct hist_field *field, void *event,
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static u64 hist_field_none(struct hist_field *field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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return 0;
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return 0;
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}
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}
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static u64 hist_field_counter(struct hist_field *field, void *event,
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static u64 hist_field_counter(struct hist_field *field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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return 1;
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return 1;
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}
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}
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static u64 hist_field_string(struct hist_field *hist_field, void *event,
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static u64 hist_field_string(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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char *addr = (char *)(event + hist_field->field->offset);
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char *addr = (char *)(event + hist_field->field->offset);
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return (u64)(unsigned long)addr;
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return (u64)(unsigned long)addr;
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}
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}
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static u64 hist_field_dynstring(struct hist_field *hist_field, void *event,
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static u64 hist_field_dynstring(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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u32 str_item = *(u32 *)(event + hist_field->field->offset);
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u32 str_item = *(u32 *)(event + hist_field->field->offset);
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int str_loc = str_item & 0xffff;
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int str_loc = str_item & 0xffff;
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@ -89,54 +99,64 @@ static u64 hist_field_dynstring(struct hist_field *hist_field, void *event,
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return (u64)(unsigned long)addr;
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return (u64)(unsigned long)addr;
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}
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}
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static u64 hist_field_pstring(struct hist_field *hist_field, void *event,
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static u64 hist_field_pstring(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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char **addr = (char **)(event + hist_field->field->offset);
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char **addr = (char **)(event + hist_field->field->offset);
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return (u64)(unsigned long)*addr;
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return (u64)(unsigned long)*addr;
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}
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}
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static u64 hist_field_log2(struct hist_field *hist_field, void *event,
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static u64 hist_field_log2(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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struct hist_field *operand = hist_field->operands[0];
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struct hist_field *operand = hist_field->operands[0];
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u64 val = operand->fn(operand, event, rbe);
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u64 val = operand->fn(operand, elt, rbe, event);
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return (u64) ilog2(roundup_pow_of_two(val));
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return (u64) ilog2(roundup_pow_of_two(val));
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}
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}
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static u64 hist_field_plus(struct hist_field *hist_field, void *event,
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static u64 hist_field_plus(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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struct hist_field *operand1 = hist_field->operands[0];
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struct hist_field *operand1 = hist_field->operands[0];
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struct hist_field *operand2 = hist_field->operands[1];
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struct hist_field *operand2 = hist_field->operands[1];
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u64 val1 = operand1->fn(operand1, event, rbe);
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u64 val1 = operand1->fn(operand1, elt, rbe, event);
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u64 val2 = operand2->fn(operand2, event, rbe);
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u64 val2 = operand2->fn(operand2, elt, rbe, event);
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return val1 + val2;
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return val1 + val2;
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}
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}
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static u64 hist_field_minus(struct hist_field *hist_field, void *event,
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static u64 hist_field_minus(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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struct hist_field *operand1 = hist_field->operands[0];
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struct hist_field *operand1 = hist_field->operands[0];
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struct hist_field *operand2 = hist_field->operands[1];
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struct hist_field *operand2 = hist_field->operands[1];
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u64 val1 = operand1->fn(operand1, event, rbe);
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u64 val1 = operand1->fn(operand1, elt, rbe, event);
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u64 val2 = operand2->fn(operand2, event, rbe);
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u64 val2 = operand2->fn(operand2, elt, rbe, event);
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return val1 - val2;
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return val1 - val2;
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}
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}
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static u64 hist_field_unary_minus(struct hist_field *hist_field, void *event,
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static u64 hist_field_unary_minus(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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struct hist_field *operand = hist_field->operands[0];
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struct hist_field *operand = hist_field->operands[0];
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s64 sval = (s64)operand->fn(operand, event, rbe);
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s64 sval = (s64)operand->fn(operand, elt, rbe, event);
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u64 val = (u64)-sval;
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u64 val = (u64)-sval;
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return val;
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return val;
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@ -144,8 +164,9 @@ static u64 hist_field_unary_minus(struct hist_field *hist_field, void *event,
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#define DEFINE_HIST_FIELD_FN(type) \
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#define DEFINE_HIST_FIELD_FN(type) \
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static u64 hist_field_##type(struct hist_field *hist_field, \
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static u64 hist_field_##type(struct hist_field *hist_field, \
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void *event, \
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struct tracing_map_elt *elt, \
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struct ring_buffer_event *rbe) \
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struct ring_buffer_event *rbe, \
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void *event) \
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{ \
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{ \
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type *addr = (type *)(event + hist_field->field->offset); \
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type *addr = (type *)(event + hist_field->field->offset); \
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\
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\
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@ -233,8 +254,10 @@ struct hist_trigger_data {
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bool remove;
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bool remove;
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};
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};
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static u64 hist_field_timestamp(struct hist_field *hist_field, void *event,
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static u64 hist_field_timestamp(struct hist_field *hist_field,
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struct ring_buffer_event *rbe)
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struct tracing_map_elt *elt,
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struct ring_buffer_event *rbe,
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void *event)
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{
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{
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struct hist_trigger_data *hist_data = hist_field->hist_data;
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struct hist_trigger_data *hist_data = hist_field->hist_data;
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struct trace_array *tr = hist_data->event_file->tr;
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struct trace_array *tr = hist_data->event_file->tr;
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@ -1570,7 +1593,7 @@ static void hist_trigger_elt_update(struct hist_trigger_data *hist_data,
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for_each_hist_val_field(i, hist_data) {
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for_each_hist_val_field(i, hist_data) {
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hist_field = hist_data->fields[i];
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hist_field = hist_data->fields[i];
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hist_val = hist_field->fn(hist_field, rec, rbe);
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hist_val = hist_field->fn(hist_field, elt, rbe, rec);
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if (hist_field->flags & HIST_FIELD_FL_VAR) {
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if (hist_field->flags & HIST_FIELD_FL_VAR) {
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var_idx = hist_field->var.idx;
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var_idx = hist_field->var.idx;
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tracing_map_set_var(elt, var_idx, hist_val);
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tracing_map_set_var(elt, var_idx, hist_val);
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@ -1582,7 +1605,7 @@ static void hist_trigger_elt_update(struct hist_trigger_data *hist_data,
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for_each_hist_key_field(i, hist_data) {
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for_each_hist_key_field(i, hist_data) {
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hist_field = hist_data->fields[i];
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hist_field = hist_data->fields[i];
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if (hist_field->flags & HIST_FIELD_FL_VAR) {
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if (hist_field->flags & HIST_FIELD_FL_VAR) {
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hist_val = hist_field->fn(hist_field, rec, rbe);
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hist_val = hist_field->fn(hist_field, elt, rbe, rec);
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var_idx = hist_field->var.idx;
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var_idx = hist_field->var.idx;
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tracing_map_set_var(elt, var_idx, hist_val);
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tracing_map_set_var(elt, var_idx, hist_val);
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}
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}
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@ -1620,9 +1643,9 @@ static void event_hist_trigger(struct event_trigger_data *data, void *rec,
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bool use_compound_key = (hist_data->n_keys > 1);
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bool use_compound_key = (hist_data->n_keys > 1);
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unsigned long entries[HIST_STACKTRACE_DEPTH];
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unsigned long entries[HIST_STACKTRACE_DEPTH];
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char compound_key[HIST_KEY_SIZE_MAX];
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char compound_key[HIST_KEY_SIZE_MAX];
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struct tracing_map_elt *elt = NULL;
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struct stack_trace stacktrace;
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struct stack_trace stacktrace;
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struct hist_field *key_field;
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struct hist_field *key_field;
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struct tracing_map_elt *elt;
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u64 field_contents;
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u64 field_contents;
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void *key = NULL;
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void *key = NULL;
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unsigned int i;
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unsigned int i;
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@ -1643,7 +1666,7 @@ static void event_hist_trigger(struct event_trigger_data *data, void *rec,
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key = entries;
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key = entries;
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} else {
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} else {
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field_contents = key_field->fn(key_field, rec, rbe);
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field_contents = key_field->fn(key_field, elt, rbe, rec);
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if (key_field->flags & HIST_FIELD_FL_STRING) {
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if (key_field->flags & HIST_FIELD_FL_STRING) {
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key = (void *)(unsigned long)field_contents;
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key = (void *)(unsigned long)field_contents;
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use_compound_key = true;
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use_compound_key = true;
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