[PATCH v2 16/40] tracing: Add hist_data member to hist_field
From: Tom Zanussi <hidden>
Date: 2017-09-05 22:06:05
Also in:
lkml
Subsystem:
the rest, tracing · Maintainers:
Linus Torvalds, Steven Rostedt, Masami Hiramatsu
Allow hist_data access via hist_field. Some users of hist_fields require or will require more access to the associated hist_data. Signed-off-by: Tom Zanussi <redacted> --- kernel/trace/trace_events_hist.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index dfaf07b..65aad07 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c@@ -39,6 +39,7 @@ struct hist_field { unsigned int offset; unsigned int is_signed; struct hist_field *operands[HIST_FIELD_OPERANDS_MAX]; + struct hist_trigger_data *hist_data; }; static u64 hist_field_none(struct hist_field *field, void *event,
@@ -404,7 +405,8 @@ static void destroy_hist_field(struct hist_field *hist_field, kfree(hist_field); } -static struct hist_field *create_hist_field(struct ftrace_event_field *field, +static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data, + struct ftrace_event_field *field, unsigned long flags) { struct hist_field *hist_field;
@@ -416,6 +418,8 @@ static struct hist_field *create_hist_field(struct ftrace_event_field *field, if (!hist_field) return NULL; + hist_field->hist_data = hist_data; + if (flags & HIST_FIELD_FL_HITCOUNT) { hist_field->fn = hist_field_counter; goto out;
@@ -429,7 +433,7 @@ static struct hist_field *create_hist_field(struct ftrace_event_field *field, if (flags & HIST_FIELD_FL_LOG2) { unsigned long fl = flags & ~HIST_FIELD_FL_LOG2; hist_field->fn = hist_field_log2; - hist_field->operands[0] = create_hist_field(field, fl); + hist_field->operands[0] = create_hist_field(hist_data, field, fl); hist_field->size = hist_field->operands[0]->size; goto out; }
@@ -482,7 +486,7 @@ static void destroy_hist_fields(struct hist_trigger_data *hist_data) static int create_hitcount_val(struct hist_trigger_data *hist_data) { hist_data->fields[HITCOUNT_IDX] = - create_hist_field(NULL, HIST_FIELD_FL_HITCOUNT); + create_hist_field(hist_data, NULL, HIST_FIELD_FL_HITCOUNT); if (!hist_data->fields[HITCOUNT_IDX]) return -ENOMEM;
@@ -528,7 +532,7 @@ static int create_val_field(struct hist_trigger_data *hist_data, } } - hist_data->fields[val_idx] = create_hist_field(field, flags); + hist_data->fields[val_idx] = create_hist_field(hist_data, field, flags); if (!hist_data->fields[val_idx]) { ret = -ENOMEM; goto out;
@@ -638,7 +642,7 @@ static int create_key_field(struct hist_trigger_data *hist_data, } } - hist_data->fields[key_idx] = create_hist_field(field, flags); + hist_data->fields[key_idx] = create_hist_field(hist_data, field, flags); if (!hist_data->fields[key_idx]) { ret = -ENOMEM; goto out;
--
1.9.3