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Diffstat (limited to 'tools/perf/Documentation/itrace.txt')
| -rw-r--r-- | tools/perf/Documentation/itrace.txt | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt new file mode 100644 index 000000000..a3abe04c7 --- /dev/null +++ b/tools/perf/Documentation/itrace.txt @@ -0,0 +1,36 @@ + i synthesize instructions 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 + e synthesize error events + d create a debug log + g synthesize a call chain (use with i or x) + l synthesize last branch entries (use with i or x) + s skip initial number of events + + The default is all events i.e. the same as --itrace=ibxwpe + + In addition, the period (default 100000) for instructions events + can be specified in units of: + + i instructions + t ticks + ms milliseconds + us microseconds + ns nanoseconds (default) + + Also the call chain size (default 16, max. 1024) for instructions or + transactions events can be specified. + + Also the number of last branch entries (default 64, max. 1024) for + instructions or transactions events can be specified. + + It is also possible to skip events generated (instructions, branches, transactions, + ptwrite, power) at the beginning. This is useful to ignore initialization code. + + --itrace=i0nss1000000 + + skips the first million instructions. |