On Fri, Oct 08, 2021 at 11:13:28AM +0200, Jiri Olsa wrote: > hi, > adding interface to maintain multiple direct functions > within single calls. It's a base for follow up bpf batch > attach functionality. ... > --- > Jiri Olsa (6): > x86/ftrace: Remove extra orig rax move > tracing: Add trampoline/graph selftest > ftrace: Add ftrace_add_rec_direct function > ftrace: Add multi direct register/unregister interface > ftrace: Add multi direct modify interface > ftrace/samples: Add multi direct interface test module > > Steven Rostedt (VMware) (2): > x86/ftrace: Remove fault protection code in prepare_ftrace_return > x86/ftrace: Make function graph use ftrace directly > > arch/x86/include/asm/ftrace.h | 9 +++- > arch/x86/kernel/ftrace.c | 71 +++++++++++++++--------------- > arch/x86/kernel/ftrace_64.S | 30 +------------ > include/linux/ftrace.h | 26 +++++++++++ > kernel/trace/fgraph.c | 6 ++- > kernel/trace/ftrace.c | 268 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------ > kernel/trace/trace_selftest.c | 54 ++++++++++++++++++++++- > samples/ftrace/Makefile | 1 + > samples/ftrace/ftrace-direct-multi.c | 52 ++++++++++++++++++++++ > 9 files changed, 420 insertions(+), 97 deletions(-) > create mode 100644 samples/ftrace/ftrace-direct-multi.c FWIW, Steven pointed me to this thread since I posted DYNAMIC_FTRACE_WITH_DIRECT_CALL support for s390 here: https://lore.kernel.org/all/20211012133802.2460757-1-hca@xxxxxxxxxxxxx/ Since Jiri asked for it: please feel free to add Tested-by: Heiko Carstens <hca@xxxxxxxxxxxxx> to all non-x86 patches.
