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Commit c0b172e5 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge tag 'perf-core-for-mingo-20160901' of... 

Merge tag 'perf-core-for-mingo-20160901' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

- Support generating cross arch probes, i.e. if you specify a vmlinux
  file for different arch than the one in the host machine,

	 $ perf probe --definition function_name args

  will generate the probe definition string needed to append to the
  target machine /sys/kernel/debug/tracing/kprobes_events file, using
  scripting (Masami Hiramatsu).

- Make 'perf probe' skip the function prologue in uprobes if program
  compiled without optimization, using the same strategy as gdb and
  systemtap uses, fixing a bug where:

	$ perf probe -x ./test 'foo i'

  When 'foo(42)' was used on the "./test" executable would produce i=0
  instead of the expected i=42 (Ravi Bangoria)

- Demangle symbols for synthesized @plt entries too (Millian Wolff)

Documentation changes:

- Show default report configuration in 'perf config' example
  and docs (Millian Wolff)

Infrastructure changes:

- Make 'perf test vmlinux' tolerate the symbol aliasing pruning done when
  loading kallsyms and vmlinux (Arnaldo Carvalho de Melo)

- Improve output of 'perf test vmlinux' test, to help identify on the verbose
  output which lines are warning and which are errors (Arnaldo Carvalho de Melo)

- Prep work to stop having to pass symbol_filter_t to lots of functions,
  simplifying symtab loading routines (Arnaldo Carvalho de Melo)

- Honor symbol_conf.allow_aliases when loading kallsyms as well, it was using
  it only when loading vmlinux files (Arnaldo Carvalho de Melo)

- Fixup symbol->end before doing alias pruning when loading symbol tables
  (Arnaldo Carvalho de Melo)

- Fix error handling of lzma kernel module decompression (Shawn Lin)

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents c9bbdd48 6243b9dc

tools/perf/Documentation/perf-config.txt

+8 −0
Original line number Original line Diff line number Diff line
@@ -110,6 +110,14 @@ Given a $HOME/.perfconfig like this: 
		order = caller

		order = caller

		sort-key = function

		sort-key = function





	[report]

		# Defaults

		sort-order = comm,dso,symbol

		percent-limit = 0

		queue-size = 0

		children = true

		group = true



Variables

Variables

~~~~~~~~~

~~~~~~~~~

tools/perf/Documentation/perf-probe.txt

+9 −0
Original line number Original line Diff line number Diff line
@@ -21,6 +21,8 @@ or 
'perf probe' [options] --vars='PROBEPOINT'

'perf probe' [options] --vars='PROBEPOINT'

or

or

'perf probe' [options] --funcs

'perf probe' [options] --funcs

or

'perf probe' [options] --definition='PROBE' [...]





DESCRIPTION

DESCRIPTION

-----------

-----------
@@ -34,6 +36,8 @@ OPTIONS 
-k::

-k::

--vmlinux=PATH::

--vmlinux=PATH::

	Specify vmlinux path which has debuginfo (Dwarf binary).

	Specify vmlinux path which has debuginfo (Dwarf binary).

	Only when using this with --definition, you can give an offline

	vmlinux file.





-m::

-m::

--module=MODNAME|PATH::

--module=MODNAME|PATH::
@@ -96,6 +100,11 @@ OPTIONS 
	can also list functions in a user space executable / shared library.

	can also list functions in a user space executable / shared library.

	This also can accept a FILTER rule argument.

	This also can accept a FILTER rule argument.





-D::

--definition=::

	Show trace-event definition converted from given probe-event instead

	of write it into tracing/[k,u]probe_events.



--filter=FILTER::

--filter=FILTER::

	(Only for --vars and --funcs) Set filter. FILTER is a combination of glob

	(Only for --vars and --funcs) Set filter. FILTER is a combination of glob

	pattern, see FILTER PATTERN for detail.

	pattern, see FILTER PATTERN for detail.

tools/perf/Documentation/perfconfig.example

+9 −0
Original line number Original line Diff line number Diff line
@@ -27,3 +27,12 @@ 
	use_offset = true

	use_offset = true

	jump_arrows = true

	jump_arrows = true

	show_nr_jumps = false

	show_nr_jumps = false



[report]



	# Defaults

	sort-order = comm,dso,symbol

	percent-limit = 0

	queue-size = 0

	children = true

	group = true

tools/perf/arch/arm/include/dwarf-regs-table.h

0 → 100644
+9 −0
Original line number Original line Diff line number Diff line 
#ifdef DEFINE_DWARF_REGSTR_TABLE

/* This is included in perf/util/dwarf-regs.c */



static const char * const arm_regstr_tbl[] = {

	"%r0", "%r1", "%r2", "%r3", "%r4",

	"%r5", "%r6", "%r7", "%r8", "%r9", "%r10",

	"%fp", "%ip", "%sp", "%lr", "%pc",

};

#endif

tools/perf/arch/arm64/include/dwarf-regs-table.h

0 → 100644
+13 −0
Original line number Original line Diff line number Diff line 
#ifdef DEFINE_DWARF_REGSTR_TABLE

/* This is included in perf/util/dwarf-regs.c */



static const char * const aarch64_regstr_tbl[] = {

	"%r0", "%r1", "%r2", "%r3", "%r4",

	"%r5", "%r6", "%r7", "%r8", "%r9",

	"%r10", "%r11", "%r12", "%r13", "%r14",

	"%r15", "%r16", "%r17", "%r18", "%r19",

	"%r20", "%r21", "%r22", "%r23", "%r24",

	"%r25", "%r26", "%r27", "%r28", "%r29",

	"%lr", "%sp",

};

#endif