On Fri, Jun 21, 2024 at 12:24:03AM +0530, Naveen N Rao wrote: > This is v3 of the patches posted here: > http://lkml.kernel.org/r/cover.1718008093.git.naveen@xxxxxxxxxx > > Since v2, I have addressed review comments from Steven and Masahiro > along with a few fixes. Patches 7-11 are new in this series and add > support for ftrace direct and bpf trampolines. > > This series depends on the patch series from Benjamin Gray adding > support for patch_ulong(): > http://lkml.kernel.org/r/20240515024445.236364-1-bgray@xxxxxxxxxxxxx This patchset, along with its dependent patchset [2], enables support for BPF schedulers introduced by the sched_ext patchset [1] on Power Architecture. Before this patchset, BPF schedulers were failing to load due to the lack of trampoline support. GitHub repo for sched_ext: https://github.com/sched-ext/sched_ext Note: This repo has been archived. Please refer to the description provided on the repo homepage for more details. [1] v6 https://lore.kernel.org/lkml/20240501151312.635565-1-tj@xxxxxxxxxx [2] http://lkml.kernel.org/r/20240515024445.236364-1-bgray@xxxxxxxxxxxxx Thank you for the patch! > > > - Naveen > > > Naveen N Rao (11): > powerpc/kprobes: Use ftrace to determine if a probe is at function > entry > powerpc/ftrace: Unify 32-bit and 64-bit ftrace entry code > powerpc/module_64: Convert #ifdef to IS_ENABLED() > powerpc/ftrace: Remove pointer to struct module from dyn_arch_ftrace > kbuild: Add generic hook for architectures to use before the final > vmlinux link > powerpc64/ftrace: Move ftrace sequence out of line > powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_CALL_OPS > powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_DIRECT_CALLS > samples/ftrace: Add support for ftrace direct samples on powerpc > powerpc64/bpf: Fold bpf_jit_emit_func_call_hlp() into > bpf_jit_emit_func_call_rel() > powerpc64/bpf: Add support for bpf trampolines > > arch/Kconfig | 3 + > arch/powerpc/Kconfig | 9 + > arch/powerpc/Makefile | 8 + > arch/powerpc/include/asm/ftrace.h | 29 +- > arch/powerpc/include/asm/module.h | 5 + > arch/powerpc/include/asm/ppc-opcode.h | 14 + > arch/powerpc/kernel/asm-offsets.c | 11 + > arch/powerpc/kernel/kprobes.c | 18 +- > arch/powerpc/kernel/module_64.c | 67 +- > arch/powerpc/kernel/trace/ftrace.c | 269 +++++++- > arch/powerpc/kernel/trace/ftrace_64_pg.c | 73 +- > arch/powerpc/kernel/trace/ftrace_entry.S | 210 ++++-- > arch/powerpc/kernel/vmlinux.lds.S | 3 +- > arch/powerpc/net/bpf_jit.h | 11 + > arch/powerpc/net/bpf_jit_comp.c | 702 +++++++++++++++++++- > arch/powerpc/net/bpf_jit_comp32.c | 7 +- > arch/powerpc/net/bpf_jit_comp64.c | 68 +- > arch/powerpc/tools/Makefile | 10 + > arch/powerpc/tools/gen-ftrace-pfe-stubs.sh | 49 ++ > samples/ftrace/ftrace-direct-modify.c | 85 ++- > samples/ftrace/ftrace-direct-multi-modify.c | 101 ++- > samples/ftrace/ftrace-direct-multi.c | 79 ++- > samples/ftrace/ftrace-direct-too.c | 83 ++- > samples/ftrace/ftrace-direct.c | 69 +- > scripts/Makefile.vmlinux | 8 + > scripts/link-vmlinux.sh | 11 +- > 26 files changed, 1813 insertions(+), 189 deletions(-) > create mode 100644 arch/powerpc/tools/Makefile > create mode 100755 arch/powerpc/tools/gen-ftrace-pfe-stubs.sh > > > base-commit: e2b06d707dd067509cdc9ceba783c06fa6a551c2 > prerequisite-patch-id: a1d50e589288239d5a8b1c1f354cd4737057c9d3 > prerequisite-patch-id: da4142d56880861bd0ad7ad7087c9e2670a2ee54 > prerequisite-patch-id: 609d292e054b2396b603890522a940fa0bdfb6d8 > prerequisite-patch-id: 6f7213fb77b1260defbf43be0e47bff9c80054cc > prerequisite-patch-id: ad3b71bf071ae4ba1bee5b087e61a2055772a74f > -- > 2.45.2 >
