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| author |   Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-12-02 19:08:30 -0500 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-12-03 10:00:27 -0500 |
| commit | eabb8980a96cff42ae70cc6ab143f4003f02c874 (patch) | |
| tree | 63c1ea23691abb8dddbbb860a92b72715ec3cf2c | |
| parent | tracing: Add NOT to filtering logic (diff) | |
| download | linux-dev-eabb8980a96cff42ae70cc6ab143f4003f02c874.tar.xz linux-dev-eabb8980a96cff42ae70cc6ab143f4003f02c874.zip | |
tracing: Allow NOT to filter AND and OR clauses
Add support to allow not "!" for and (&&) and (||). That is:
!(field1 == X && field2 == Y)
Where the value of the full clause will be notted.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | kernel/trace/trace_events_filter.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index e6a33db83856..ced69da0ff55 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -489,9 +489,10 @@ static int process_ops(struct filter_pred *preds, if (!WARN_ON_ONCE(!pred->fn)) match = pred->fn(pred, rec); if (!!match == type) - return match; + break; } - return match; + /* If not of not match is equal to not of not, then it is a match */ + return !!match == !op->not; } struct filter_match_preds_data { @@ -740,10 +741,10 @@ static int filter_set_pred(struct event_filter *filter, * then this op can be folded. */ if (left->index & FILTER_PRED_FOLD && - (left->op == dest->op || + ((left->op == dest->op && !left->not) || left->left == FILTER_PRED_INVALID) && right->index & FILTER_PRED_FOLD && - (right->op == dest->op || + ((right->op == dest->op && !right->not) || right->left == FILTER_PRED_INVALID)) dest->index |= FILTER_PRED_FOLD; |