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Commit ed827021 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge branch 'perf' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core

parents 4d1c52b0 1cf4a063
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+16 −3
Original line number Diff line number Diff line
@@ -18,8 +18,16 @@ various perf commands with the -e option.
RAW HARDWARE EVENT DESCRIPTOR
-----------------------------
Even when an event is not available in a symbolic form within perf right now,
it can be encoded as <UMASK VALUE><EVENT NUM>, for instance, if the Intel docs
describe an event as:
it can be encoded in a per processor specific way.

For instance For x86 CPUs NNN represents the raw register encoding with the
layout of IA32_PERFEVTSELx MSRs (see [Intel® 64 and IA-32 Architectures Software Developer's Manual Volume 3B: System Programming Guide] Figure 30-1 Layout
of IA32_PERFEVTSELx MSRs) or AMD's PerfEvtSeln (see [AMD64 Architecture Programmer’s Manual Volume 2: System Programming], Page 344,
Figure 13-7 Performance Event-Select Register (PerfEvtSeln)).

Example:

If the Intel docs for a QM720 Core i7 describe an event as:

  Event  Umask  Event Mask
  Num.   Value  Mnemonic    Description                        Comment
@@ -33,6 +41,9 @@ raw encoding of 0x1A8 can be used:
 perf stat -e r1a8 -a sleep 1
 perf record -e r1a8 ...

You should refer to the processor specific documentation for getting these
details. Some of them are referenced in the SEE ALSO section below.

OPTIONS
-------
None
@@ -40,4 +51,6 @@ None
SEE ALSO
--------
linkperf:perf-stat[1], linkperf:perf-top[1],
linkperf:perf-record[1]
linkperf:perf-record[1],
http://www.intel.com/Assets/PDF/manual/253669.pdf[Intel® 64 and IA-32 Architectures Software Developer's Manual Volume 3B: System Programming Guide],
http://support.amd.com/us/Processor_TechDocs/24593.pdf[AMD64 Architecture Programmer’s Manual Volume 2: System Programming]
+2 −1
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@@ -943,7 +943,8 @@ void print_events(void)

	printf("\n");
	printf("  %-42s [%s]\n",
		"rNNN (NNN=<UMASK VALUE><EVENT NUM>)", event_type_descriptors[PERF_TYPE_RAW]);
		"rNNN (see 'perf list --help' on how to encode it)",
	       event_type_descriptors[PERF_TYPE_RAW]);
	printf("\n");

	printf("  %-42s [%s]\n",