- Robustify the user backtrace code, as done on other architectures.
- Provide the symbols resolution when triggering from tracepoints.
Big thanks to Steve Capper for the help in debugging and rephrasing the
commits descriptions.
Stress tested with perf record and tracepoints triggering (-e <tracepoint>),
with unwinding using fp (--call-graph fp) and dwarf info (--call-graph dwarf).
Jean Pihet (3):
ARM: perf: Check that current->mm is alive before getting user
callchain
ARM: perf: disable the pagefault handler when reading from user space
ARM: perf: allow tracing with kernel tracepoints events
arch/arm/include/asm/perf_event.h | 19 +++++++++++++++++++
arch/arm/kernel/perf_event.c | 13 +++++++++++--
2 files changed, 30 insertions(+), 2 deletions(-)
--
1.8.1.2
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