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Diffstat (limited to 'Documentation/trace/events.txt')
| -rw-r--r-- | Documentation/trace/events.txt | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/Documentation/trace/events.txt b/Documentation/trace/events.txt index bb24c2a0e87..37732a220d3 100644 --- a/Documentation/trace/events.txt +++ b/Documentation/trace/events.txt @@ -183,13 +183,22 @@ The relational-operators depend on the type of the field being tested: The operators available for numeric fields are: -==, !=, <, <=, >, >= +==, !=, <, <=, >, >=, & And for string fields they are: -==, != +==, !=, ~ -Currently, only exact string matches are supported. +The glob (~) only accepts a wild card character (*) at the start and or +end of the string. For example: + + prev_comm ~ "*sh" + prev_comm ~ "sh*" + prev_comm ~ "*sh*" + +But does not allow for it to be within the string: + + prev_comm ~ "ba*sh" <-- is invalid 5.2 Setting filters ------------------- |