BMC/Intel-BMC/linux.git/tools/perf/arch/x86/Makefile, branch dev

perf build: Add arch x86 objects building

2015-02-12T16:12:01+00:00

Move the x86 arch objects building under build framework to be included in the libperf build object. Adding also arch/$(ARCH)/Build files for the rest of the archs. The reason for this is that in arch/Build we now do: +libperf-y += $(ARCH)/ which would make the build to fail on other architectures, because the build framework requires 'Build' file in nested directories and this patch adds it only for x86. Signed-off-by: Jiri Olsa Tested-by: Sukadev Bhattiprolu Tested-by: Will Deacon Cc: Alexis Berlemont Cc: Borislav Petkov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-5enob06z07m7ew6nzzdmp3n2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf kvm: Move arch specific code into arch/

2014-07-16T20:57:32+00:00

Parts of a 'perf kvm stat' code make sense only for x86. Let's move this code into the arch/x86/kvm-stat.c file and add util/kvm-stat.h for generic structure definitions. Add a global array 'kvm_reg_events_ops' for accessing the arch-specific 'kvm_events_ops' from generic code. Since the several global arrays (i.e. 'kvm_events_tp') have been moved to arch/*, we can not know their sizes and use them directly in builtin-kvm.c. This patch fixes that problem by adding trimming NULL element to each array and changing the behavior of their handlers in generic code. Reviewed-by: David Ahern Reviewed-by: Cornelia Huck Signed-off-by: Alexander Yarygin Acked-by: Christian Borntraeger Cc: Christian Borntraeger Cc: Cornelia Huck Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1404397747-20939-3-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf kvm: Introduce HAVE_KVM_STAT_SUPPORT flag

2014-07-07T19:55:23+00:00

kvm stat support is currently conditional on i386/x86_64. Let's abstract this into a HAVE_KVM_STAT_SUPPORT flag, so that other architectures can support kvm stat as well. Reviewed-by: Cornelia Huck Reviewed-by: David Ahern Signed-off-by: Alexander Yarygin Acked-by: Christian Borntraeger Cc: Christian Borntraeger Cc: Cornelia Huck Cc: David Ahern Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1404395992-17095-2-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Setup default dwarf post unwinder

2014-02-24T12:29:36+00:00

Factor NO_LIBDW_DWARF_UNWIND makefile variable and code that selects default DWARf post unwinder based on detected features (libdw and libunwind support) If both are detected the libunwind is selected as default. Simple 'make' will try to add: - libunwind unwinder if present - libdw unwinder if present - disable dwarf unwind if non of libunwind and libdw libraries are present If one of the DWARF unwind libraries is detected, message is displayed which one (libunwind/libdw) is compiled in. Examples: - compile in libdw unwinder if present: $ make NO_LIBUNWIND=1 - compile in libdw (with libdw installation directory) unwinder if present: $ make LIBDW_DIR=/opt/elfutils/ NO_LIBUNWIND=1 BUILD: Doing 'make -j4' parallel build Auto-detecting system features: ... dwarf: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libaudit: [ on ] ... libbfd: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libslang: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... DWARF post unwind library: libdw - disable post dwarf unwind completely: $ make NO_LIBUNWIND=1 NO_LIBDW_DWARF_UNWIND=1 BUILD: Doing 'make -j4' parallel build Auto-detecting system features: ... dwarf: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libaudit: [ on ] ... libbfd: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libslang: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... DWARF post unwind library: libunwind Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1392825179-5228-6-git-send-email-jolsa@redhat.com [ Add suggestion about setting LIBDW_DIR when not finding libdw ] Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add libdw DWARF post unwind support

2014-02-24T12:29:36+00:00

Adding libdw DWARF post unwind support, which is part of elfutils-devel/libdw-dev package from version 0.158. The new code is contained in unwin-libdw.c object, and implements unwind__get_entries unwind interface function. New Makefile variable NO_LIBDW_DWARF_UNWIND was added to control its compilation, and is marked as disabled now. It's factored with the rest of the Makefile unwind build code in the next patch. Arch specific code was added for x86. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1392825179-5228-5-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf callchain: Separate libunwind code to special object

2014-02-18T12:34:48+00:00

We are going to add libdw library support to do dwarf post unwind. Making the code ready by moving libunwind dwarf post unwind stuff into separate object. Signed-off-by: Jiri Olsa Acked-by: Jean Pihet Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1389098853-14466-10-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests x86: Add dwarf unwind test

2014-02-18T12:34:47+00:00

Adding dwarf unwind test, that setups live machine data over the perf test thread and does the remote unwind. At this moment this test fails due to bug in the max_stack processing in unwind__get_entries function. This is fixed in following patch. Need to use -fno-optimize-sibling-calls for test compilation, otherwise 'krava_*' function calls are optimized into jumps and ommited from the stack unwind. So far it's enabled only for x86. Signed-off-by: Jiri Olsa Acked-by: Jean Pihet Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1389098853-14466-6-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests x86: Introduce perf_regs_load function

2014-02-18T12:34:47+00:00

Introducing perf_regs_load function, which is going to be used for dwarf unwind test in following patches. It takes single argument as a pointer to the regs dump buffer and populates it with current registers values. Signed-off-by: Jiri Olsa Acked-by: Jean Pihet Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1389098853-14466-5-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add test for converting perf time to/from TSC

2013-07-23T10:17:59+00:00

The test uses the newly added cap_usr_time_zero and time_zero of perf_event_mmap_page. TSC from rdtsc is compared with the time from 2 perf events. The test passes if the calculated times are all in the correct order. Signed-off-by: Adrian Hunter Signed-off-by: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1372425741-1676-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Ingo Molnar

perf tools: Support for DWARF CFI unwinding on post processing

2012-08-11T18:06:56+00:00

This brings the support for DWARF cfi unwinding on perf post processing. Call frame informations are retrieved and then passed to libunwind that requests memory and register content from the applications. Adding unwind object to handle the user stack backtrace based on the user register values and user stack dump. The unwind object access the libunwind via remote interface and provides to it all the necessary data to unwind the stack. The unwind interface provides following function: unwind__get_entries And callback (specified in above function) to retrieve the backtrace entries: typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg); Signed-off-by: Jiri Olsa Original-patch-by: Frederic Weisbecker Cc: "Frank Ch. Eigler" Cc: Arun Sharma Cc: Benjamin Redelings Cc: Corey Ashford Cc: Cyrill Gorcunov Cc: Frank Ch. Eigler Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Masami Hiramatsu Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Robert Richter Cc: Stephane Eranian Cc: Tom Zanussi Cc: Ulrich Drepper Link: http://lkml.kernel.org/r/1344345647-11536-12-git-send-email-jolsa@redhat.com [ Replaced use of perf_session by usage of perf_evsel ] Signed-off-by: Arnaldo Carvalho de Melo