Merge branch 'acpi-ec'

[linux-drm-fsl-dcu.git] / tools / perf / Documentation / perf-record.txt

diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index af9a54ece0245fe9c340a0172438e18883b536d3..31e977459c519d933473d7a46d4bc1b14263ef7e 100644 (file)
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -33,12 +33,27 @@ OPTIONS
         - a raw PMU event (eventsel+umask) in the form of rNNN where NNN is a
          hexadecimal event descriptor.
 
         - a raw PMU event (eventsel+umask) in the form of rNNN where NNN is a
          hexadecimal event descriptor.
 

-        - a hardware breakpoint event in the form of '\mem:addr[:access]'
+       - a symbolically formed PMU event like 'pmu/param1=0x3,param2/' where
+         'param1', 'param2', etc are defined as formats for the PMU in
+         /sys/bus/event_sources/devices/<pmu>/format/*.
+
+       - a symbolically formed event like 'pmu/config=M,config1=N,config3=K/'
+
+          where M, N, K are numbers (in decimal, hex, octal format). Acceptable
+          values for each of 'config', 'config1' and 'config2' are defined by
+          corresponding entries in /sys/bus/event_sources/devices/<pmu>/format/*
+          param1 and param2 are defined as formats for the PMU in:
+          /sys/bus/event_sources/devices/<pmu>/format/*
+
+        - a hardware breakpoint event in the form of '\mem:addr[/len][:access]'

           where addr is the address in memory you want to break in.
           Access is the memory access type (read, write, execute) it can
           where addr is the address in memory you want to break in.
           Access is the memory access type (read, write, execute) it can

-          be passed as follows: '\mem:addr[:[r][w][x]]'.
+          be passed as follows: '\mem:addr[:[r][w][x]]'. len is the range,
+          number of bytes from specified addr, which the breakpoint will cover.

           If you want to profile read-write accesses in 0x1000, just set
           'mem:0x1000:rw'.
           If you want to profile read-write accesses in 0x1000, just set
           'mem:0x1000:rw'.

+          If you want to profile write accesses in [0x1000~1008), just set
+          'mem:0x1000/8:w'.

 
 --filter=<filter>::
         Event filter.
 
 --filter=<filter>::
         Event filter.