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SubjectRe: [RFC PATCH 0/8] Fix perf probe issues on powerpc
On Tue, Dec 09, 2014 at 11:03:58PM +0530, Naveen N. Rao wrote:
> This patchset fixes various issues with perf probe on powerpc
> across ABIv1 and ABIv2:
> - in the presence of DWARF debug-info,
> - in the absence of DWARF, but with the symbol table, and
> - in the absence of debug-info, but with kallsyms.
>
> Applies cleanly on v3.18 and on -tip with minor changes to patch 6.
> Tested on ppc64 BE and LE.
>
> - Naveen
>
> Naveen N. Rao (8):
> kprobes: Fix kallsyms lookup across powerpc ABIv1 and ABIv2
> perf probe powerpc: Fix symbol fixup issues due to ELF type
> perf probe: Improve detection of file/function name in the probe
> pattern
> perf probe powerpc: Handle powerpc dot symbols
> perf probe powerpc: Allow matching against dot symbols
> perf tools powerpc: Fix PPC64 ELF ABIv2 symbol decoding
> perf probe powerpc: Use DWARF info only if necessary
> perf probe powerpc: Fixup function entry if using kallsyms lookup
>
> arch/powerpc/include/asm/code-patching.h | 26 ++++++++----
> arch/powerpc/include/asm/kprobes.h | 58 ++++++++++++++++++---------
> tools/perf/arch/powerpc/Makefile | 1 +
> tools/perf/arch/powerpc/util/elf-sym-decode.c | 27 +++++++++++++
> tools/perf/config/Makefile | 1 +
> tools/perf/util/elf_sym.h | 13 ++++++
> tools/perf/util/probe-event.c | 57 ++++++++++++++++++++++++--
> tools/perf/util/symbol-elf.c | 11 ++++-
> tools/perf/util/symbol.c | 6 +++
> 9 files changed, 170 insertions(+), 30 deletions(-)
> create mode 100644 tools/perf/arch/powerpc/util/elf-sym-decode.c
> create mode 100644 tools/perf/util/elf_sym.h

For the full patchset...

Reviewed-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>



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