diff options
| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2016-07-12 09:28:09 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-07-12 09:28:09 -0400 |
| commit | 65ffbd349250575d0549841f0517bd64d7084a0e (patch) | |
| tree | 0e4c8aa80286648ccbd840b0f1d129bd011a5856 | |
| parent | 73723c0bb51262715564ebb2a6cf435603779668 (diff) | |
| download | trace-cmd-65ffbd349250575d0549841f0517bd64d7084a0e.tar.gz | |
event-parse: Add filter on task CPU id
Add a 'CPU' special field to allow the filter in trace-cmd report
to filter on the task's CPU.
By adding a special field 'CPU' (all caps) the user can now
filter out tasks based on which CPU they are on. This is useful when
filtering out (or in) a bunch of threads.
-F 'CPU == 0'
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | parse-filter.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/parse-filter.c b/parse-filter.c index 88cccea3..7c214ceb 100644 --- a/parse-filter.c +++ b/parse-filter.c @@ -28,11 +28,16 @@ #include "event-utils.h" #define COMM "COMM" +#define CPU "CPU" static struct format_field comm = { .name = "COMM", }; +static struct format_field cpu = { + .name = "CPU", +}; + struct event_list { struct event_list *next; struct event_format *event; @@ -382,14 +387,17 @@ create_arg_item(struct event_format *event, const char *token, /* Consider this a field */ field = pevent_find_any_field(event, token); if (!field) { - if (strcmp(token, COMM) != 0) { + /* If token is 'COMM' or 'CPU' then it is special */ + if (strcmp(token, COMM) == 0) { + field = &comm; + } else if (strcmp(token, CPU) == 0) { + field = &cpu; + } else { /* not a field, Make it false */ arg->type = FILTER_ARG_BOOLEAN; arg->boolean.value = FILTER_FALSE; break; } - /* If token is 'COMM' then it is special */ - field = &comm; } arg->type = FILTER_ARG_FIELD; arg->field.field = field; @@ -1718,6 +1726,10 @@ get_value(struct event_format *event, return (unsigned long)name; } + /* Handle our dummy "cpu" field */ + if (field == &cpu) + return record->cpu; + pevent_read_number_field(field, record->data, &val); if (!(field->flags & FIELD_IS_SIGNED)) |