perf top: Update man page

perf_counter tools: update perf top manual page to reflect
current implementation.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 539d012..4a7d558 100644 (file)
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -3,36 +3,122 @@ perf-top(1)
 
 NAME
 ----
-perf-top - Run a command and profile it
+perf-top - System profiling tool.
 
 SYNOPSIS
 --------
 [verse]
-'perf top' [-e <EVENT> | --event=EVENT] [-l] [-a] <command>
+'perf top' [-e <EVENT> | --event=EVENT] [<options>]
 
 DESCRIPTION
 -----------
-This command runs a command and gathers a performance counter profile
-from it.
+This command generates and displays a performance counter profile in realtime.
 
 
 OPTIONS
 -------
-<command>...::
-       Any command you can specify in a shell.
+-a::
+--all-cpus::
+        System-wide collection.  (default)
+
+-c <count>::
+--count=<count>::
+       Event period to sample.
+
+-C <cpu>::
+--CPU=<cpu>::
+       CPU to profile.
+
+-d <seconds>::
+--delay=<seconds>::
+       Number of seconds to delay between refreshes.
 
--e::
---event=::
+-e <event>::
+--event=<event>::
        Select the PMU event. Selection can be a symbolic event name
        (use 'perf list' to list all events) or a raw PMU
        event (eventsel+umask) in the form of rNNN where NNN is a
-        hexadecimal event descriptor.
+       hexadecimal event descriptor.
 
--a::
-        system-wide collection
+-E <entries>::
+--entries=<entries>::
+       Display this many functions.
+
+-f <count>::
+--count-filter=<count>::
+       Only display functions with more events than this.
+
+-F <freq>::
+--freq=<freq>::
+       Profile at this frequency.
+
+-i::
+--inherit::
+       Child tasks inherit counters, only makes sens with -p option.
+
+-k <path>::
+--vmlinux=<path>::
+       Path to vmlinux.  Required for annotation functionality.
+
+-m <pages>::
+--mmap-pages=<pages>::
+       Number of mmapped data pages.
+
+-p <pid>::
+--pid=<pid>::
+       Profile events on existing pid.
+
+-r <priority>::
+--realtime=<priority>::
+       Collect data with this RT SCHED_FIFO priority.
+
+-s <symbol>::
+--sym-annotate=<symbol>::
+        Annotate this symbol.  Requires -k option.
+
+-v::
+--verbose::
+       Be more verbose (show counter open errors, etc).
+
+-z::
+--zero::
+       Zero history across display updates.
+
+INTERACTIVE PROMPTING KEYS
+--------------------------
+
+[d]::
+       Display refresh delay.
+
+[e]::
+       Number of entries to display.
+
+[E]::
+       Event to display when multiple counters are active.
+
+[f]::
+       Profile display filter (>= hit count).
+
+[F]::
+       Annotation display filter (>= % of total).
+
+[s]::
+       Annotate symbol.
+
+[S]::
+       Stop annotation, return to full profile display.
+
+[w]::
+       Toggle between weighted sum and individual count[E]r profile.
+
+[z]::
+       Toggle event count zeroing across display updates.
+
+[qQ]::
+       Quit.
+
+Pressing any unmapped key displays a menu, and prompts for input.
 
--l::
-        scale counter values
 
 SEE ALSO
 --------