diff options
Diffstat (limited to 'tools/perf/Documentation/itrace.txt')
| -rw-r--r-- | tools/perf/Documentation/itrace.txt | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index e817179c5027..40476b227f8d 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -1,16 +1,20 @@ i synthesize instructions events - b synthesize branches events (branch misses for Arm SPE) + y synthesize cycles events + b synthesize branches events c synthesize branches events (calls only) r synthesize branches events (returns only) x synthesize transactions events w synthesize ptwrite events - p synthesize power events + p synthesize power events (incl. PSB events for Intel PT) o synthesize other events recorded due to the use of aux-output (refer to perf record) + I synthesize interrupt or similar (asynchronous) events + (e.g. Intel PT Event Trace) e synthesize error events d create a debug log f synthesize first level cache events m synthesize last level cache events + M synthesize memory events t synthesize TLB events a synthesize remote access events g synthesize a call chain (use with i or x) @@ -18,8 +22,12 @@ l synthesize last branch entries (use with i or x) L synthesize last branch entries on existing event records s skip initial number of events + q quicker (less detailed) decoding + A approximate IPC + Z prefer to ignore timestamps (so-called "timeless" decoding) + T use the timestamp trace as kernel time - The default is all events i.e. the same as --itrace=ibxwpe, + The default is all events i.e. the same as --itrace=iybxwpe, except for perf script where it is --itrace=ce In addition, the period (default 100000, except for perf script where it is 1) @@ -47,3 +55,18 @@ --itrace=i0nss1000000 skips the first million instructions. + + The 'e' option may be followed by flags which affect what errors will or + will not be reported. Each flag must be preceded by either '+' or '-'. + The flags are: + o overflow + l trace data lost + + If supported, the 'd' option may be followed by flags which affect what + debug messages will or will not be logged. Each flag must be preceded + by either '+' or '-'. The flags are: + a all perf events + e output only on errors (size configurable - see linkperf:perf-config[1]) + o output to stdout + + If supported, the 'q' option may be repeated to increase the effect. |