[PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-05-06 Thread Jean Pihet
Adding libdw DWARF post unwind support, which is part of elfutils-devel/libdw-dev package from version 0.158. Also includes the test suite for dwarf unwinding, by adding the arch specific test code and the perf_regs_load function. Jean Pihet (3): perf tests: Introduce perf_regs_load function

[PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-05-06 Thread Jean Pihet
Adding libdw DWARF post unwind support, which is part of elfutils-devel/libdw-dev package from version 0.158. Also includes the test suite for dwarf unwinding, by adding the arch specific test code and the perf_regs_load function. Jean Pihet (3): perf tests: Introduce perf_regs_load function

Re: [PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-04 Thread Jiri Olsa
On Tue, Mar 04, 2014 at 02:24:37AM +0100, Jean Pihet wrote: > Hi, > > Here are some notes about the performance improvement and the test usage. > > Jiri, do you need these notes in the one of commit description? > > 1. Using libdw vs libunwind on ARMv7 > > The performance gain is (more than)

Re: [PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-04 Thread Jiri Olsa
On Tue, Mar 04, 2014 at 02:24:37AM +0100, Jean Pihet wrote: > Hi, > > Here are some notes about the performance improvement and the test usage. > > Jiri, do you need these notes in the one of commit description? > > 1. Using libdw vs libunwind on ARMv7 > > The performance gain is (more than)

Re: [PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-04 Thread Jiri Olsa
On Tue, Mar 04, 2014 at 02:24:37AM +0100, Jean Pihet wrote: Hi, Here are some notes about the performance improvement and the test usage. Jiri, do you need these notes in the one of commit description? 1. Using libdw vs libunwind on ARMv7 The performance gain is (more than)

Re: [PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-04 Thread Jiri Olsa
On Tue, Mar 04, 2014 at 02:24:37AM +0100, Jean Pihet wrote: Hi, Here are some notes about the performance improvement and the test usage. Jiri, do you need these notes in the one of commit description? 1. Using libdw vs libunwind on ARMv7 The performance gain is (more than)

Re: [PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-03 Thread Jean Pihet
Hi, Here are some notes about the performance improvement and the test usage. Jiri, do you need these notes in the one of commit description? 1. Using libdw vs libunwind on ARMv7 The performance gain is (more than) significant: >800%. I did not profile perf itself ;-p just did a timing

[PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-03 Thread Jean Pihet
Adding libdw DWARF post unwind support, which is part of elfutils-devel/libdw-dev package from version 0.158. Also includes the test suite for dwarf unwinding, by adding the arch specific test code and the perf_regs_load function. Jean Pihet (3): perf tests: Introduce perf_regs_load function

[PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-03 Thread Jean Pihet
Adding libdw DWARF post unwind support, which is part of elfutils-devel/libdw-dev package from version 0.158. Also includes the test suite for dwarf unwinding, by adding the arch specific test code and the perf_regs_load function. Jean Pihet (3): perf tests: Introduce perf_regs_load function

Re: [PATCH 0/3] perf tools: Add libdw DWARF post unwind support for ARM

2014-03-03 Thread Jean Pihet
Hi, Here are some notes about the performance improvement and the test usage. Jiri, do you need these notes in the one of commit description? 1. Using libdw vs libunwind on ARMv7 The performance gain is (more than) significant: 800%. I did not profile perf itself ;-p just did a timing