Messages in this thread | | | From | Hou Pengyang <> | Subject | [PATCH v4 0/2] arm & arm64: perf: Fix callchain parse error with kernel tracepoint events | Date | Fri, 8 May 2015 05:43:02 +0000 |
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For arm & arm64, when tracing with tracepoint events, the IP and cpsr are set to 0, preventing the perf code parsing the callchain and resolving the symbols correctly.
These two patches fix this by implementing perf_arch_fetch_caller_regs for arm and arm64, which fills several necessary register info for callchain unwinding and symbol resolving.
v3->v4: - fix compile errors
v2->v3: - split the original patch into two, one for arm and the other arm64; - change '|=' to '=' when setting cpsr.
Hou Pengyang (2): arm: perf: Fix callchain parse error with kernel tracepoint events arm64: perf: Fix callchain parse error with kernel tracepoint events
arch/arm/include/asm/perf_event.h | 7 +++++++ arch/arm64/include/asm/perf_event.h | 7 +++++++ 2 files changed, 14 insertions(+)
-- 1.8.3.4
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