diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-20 15:36:52 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-20 15:36:52 +1000 |
commit | 880102e78547c1db158a17e36cf0cdd98e7ad710 (patch) | |
tree | 3fff9cc54c44dafe275cfabefb96c589e08d971d /tools/perf/Documentation/perf-script.txt | |
parent | 3d07f0e83d4323d2cd45cc583f7cf1957aca3cac (diff) | |
parent | 39ab05c8e0b519ff0a04a869f065746e6e8c3d95 (diff) |
Merge remote branch 'origin/master' into merge
Manual merge of arch/powerpc/kernel/smp.c and add missing scheduler_ipi()
call to arch/powerpc/platforms/cell/interrupt.c
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'tools/perf/Documentation/perf-script.txt')
-rw-r--r-- | tools/perf/Documentation/perf-script.txt | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 66f040b3072..86c87e214b1 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -113,13 +113,61 @@ OPTIONS Do various checks like samples ordering and lost events. -f:: ---fields +--fields:: Comma separated list of fields to print. Options are: comm, tid, pid, time, cpu, event, trace, sym. Field - list must be prepended with the type, trace, sw or hw, + list can be prepended with the type, trace, sw or hw, to indicate to which event type the field list applies. e.g., -f sw:comm,tid,time,sym and -f trace:time,cpu,trace + perf script -f <fields> + + is equivalent to: + + perf script -f trace:<fields> -f sw:<fields> -f hw:<fields> + + i.e., the specified fields apply to all event types if the type string + is not given. + + The arguments are processed in the order received. A later usage can + reset a prior request. e.g.: + + -f trace: -f comm,tid,time,sym + + The first -f suppresses trace events (field list is ""), but then the + second invocation sets the fields to comm,tid,time,sym. In this case a + warning is given to the user: + + "Overriding previous field request for all events." + + Alternativey, consider the order: + + -f comm,tid,time,sym -f trace: + + The first -f sets the fields for all events and the second -f + suppresses trace events. The user is given a warning message about + the override, and the result of the above is that only S/W and H/W + events are displayed with the given fields. + + For the 'wildcard' option if a user selected field is invalid for an + event type, a message is displayed to the user that the option is + ignored for that type. For example: + + $ perf script -f comm,tid,trace + 'trace' not valid for hardware events. Ignoring. + 'trace' not valid for software events. Ignoring. + + Alternatively, if the type is given an invalid field is specified it + is an error. For example: + + perf script -v -f sw:comm,tid,trace + 'trace' not valid for software events. + + At this point usage is displayed, and perf-script exits. + + Finally, a user may not set fields to none for all event types. + i.e., -f "" is not allowed. + -k:: --vmlinux=<file>:: vmlinux pathname |