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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-18 08:19:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-18 08:19:03 -0700
commit4d7b4ac22fbec1a03206c6cde353f2fd6942f828 (patch)
tree2d96a9e9c28cf6fa628a278decc00ad55a8b043b /tools/perf/Documentation/perf-trace-python.txt
parent3aaf51ace5975050ab43c7d4d7e439e0ae7d13d7 (diff)
parent94f3ca95787ada3d64339a4ecb2754236ab563f6 (diff)
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (311 commits) perf tools: Add mode to build without newt support perf symbols: symbol inconsistency message should be done only at verbose=1 perf tui: Add explicit -lslang option perf options: Type check all the remaining OPT_ variants perf options: Type check OPT_BOOLEAN and fix the offenders perf options: Check v type in OPT_U?INTEGER perf options: Introduce OPT_UINTEGER perf tui: Add workaround for slang < 2.1.4 perf record: Fix bug mismatch with -c option definition perf options: Introduce OPT_U64 perf tui: Add help window to show key associations perf tui: Make <- exit menus too perf newt: Add single key shortcuts for zoom into DSO and threads perf newt: Exit browser unconditionally when CTRL+C, q or Q is pressed perf newt: Fix the 'A'/'a' shortcut for annotate perf newt: Make <- exit the ui_browser x86, perf: P4 PMU - fix counters management logic perf newt: Make <- zoom out filters perf report: Report number of events, not samples perf hist: Clarify events_stats fields usage ... Fix up trivial conflicts in kernel/fork.c and tools/perf/builtin-record.c
Diffstat (limited to 'tools/perf/Documentation/perf-trace-python.txt')
-rw-r--r--tools/perf/Documentation/perf-trace-python.txt16
1 files changed, 7 insertions, 9 deletions
diff --git a/tools/perf/Documentation/perf-trace-python.txt b/tools/perf/Documentation/perf-trace-python.txt
index a241aca7718..693be804dd3 100644
--- a/tools/perf/Documentation/perf-trace-python.txt
+++ b/tools/perf/Documentation/perf-trace-python.txt
@@ -1,5 +1,5 @@
perf-trace-python(1)
-==================
+====================
NAME
----
@@ -93,7 +93,7 @@ don't care how it exited, so we'll use 'perf record' to record only
the sys_enter events:
----
-# perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter
+# perf record -a -e raw_syscalls:sys_enter
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 56.545 MB perf.data (~2470503 samples) ]
@@ -182,7 +182,7 @@ mean either that the record step recorded event types that it wasn't
really interested in, or the script was run against a trace file that
doesn't correspond to the script.
-The script generated by -g option option simply prints a line for each
+The script generated by -g option simply prints a line for each
event found in the trace stream i.e. it basically just dumps the event
and its parameter values to stdout. The print_header() function is
simply a utility function used for that purpose. Let's rename the
@@ -359,7 +359,7 @@ your script:
# cat kernel-source/tools/perf/scripts/python/bin/syscall-counts-record
#!/bin/bash
-perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter
+perf record -a -e raw_syscalls:sys_enter
----
The 'report' script is also a shell script with the same base name as
@@ -449,12 +449,10 @@ available as calls back into the perf executable (see below).
As an example, the following perf record command can be used to record
all sched_wakeup events in the system:
- # perf record -c 1 -f -a -M -R -e sched:sched_wakeup
+ # perf record -a -e sched:sched_wakeup
Traces meant to be processed using a script should be recorded with
-the above options: -c 1 says to sample every event, -a to enable
-system-wide collection, -M to multiplex the output, and -R to collect
-raw samples.
+the above option: -a to enable system-wide collection.
The format file for the sched_wakep event defines the following fields
(see /sys/kernel/debug/tracing/events/sched/sched_wakeup/format):
@@ -584,7 +582,7 @@ files:
flag_str(event_name, field_name, field_value) - returns the string represention corresponding to field_value for the flag field field_name of event event_name
symbol_str(event_name, field_name, field_value) - returns the string represention corresponding to field_value for the symbolic field field_name of event event_name
-The *autodict* function returns a special special kind of Python
+The *autodict* function returns a special kind of Python
dictionary that implements Perl's 'autovivifying' hashes in Python
i.e. with autovivifying hashes, you can assign nested hash values
without having to go to the trouble of creating intermediate levels if