On Wed, Feb 17, 2016 at 07:58:57PM -0800, Alexei Starovoitov wrote: > . avoid walking the stack when there is no room left in the buffer > . generalize get_perf_callchain() to be called from bpf helper
If it does two things it should be two patches. > Signed-off-by: Alexei Starovoitov <a...@kernel.org> > --- > arch/x86/include/asm/stacktrace.h | 2 +- > arch/x86/kernel/cpu/perf_event.c | 4 ++-- > arch/x86/kernel/dumpstack.c | 6 ++++-- > arch/x86/kernel/stacktrace.c | 18 +++++++++++------- > arch/x86/oprofile/backtrace.c | 3 ++- > include/linux/perf_event.h | 13 +++++++++++-- > kernel/events/callchain.c | 32 ++++++++++++++++++++------------ > kernel/events/internal.h | 2 -- > 8 files changed, 51 insertions(+), 29 deletions(-) And at the very least this should have had a note that it doesn't break all the other archs that implement perf-callchain stuff.
