| Message ID | 20231130121531.1178502-1-bjorn@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | riscv: ftrace: Miscellaneous ftrace improvements | expand |
Hello: This series was applied to riscv/linux.git (fixes) by Palmer Dabbelt <palmer@rivosinc.com>: On Thu, 30 Nov 2023 13:15:27 +0100 you wrote: > From: Björn Töpel <bjorn@rivosinc.com> > > NB! Song told me that he would not have the time work on this series, > so I picked it up. > > This series includes a three ftrace improvements for RISC-V: > > [...] Here is the summary with links: - [v12,for-next,1/4] riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY https://git.kernel.org/riscv/c/b546d6363af4 - [v12,for-next,2/4] riscv: ftrace: Make function graph use ftrace directly https://git.kernel.org/riscv/c/35e61e8827ee - [v12,for-next,3/4] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support https://git.kernel.org/riscv/c/196c79f19a92 - [v12,for-next,4/4] samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI] https://git.kernel.org/riscv/c/629291dd8499 You are awesome, thank you!
From: Björn Töpel <bjorn@rivosinc.com> NB! Song told me that he would not have the time work on this series, so I picked it up. This series includes a three ftrace improvements for RISC-V: 1. Do not require to run recordmcount at build time (patch 1) 2. Simplification of the function graph functionality (patch 2) 3. Enable DYNAMIC_FTRACE_WITH_DIRECT_CALLS (patch 3 and 4) The series has been tested on Qemu/rv64 virt/Debian sid with the following test configs: CONFIG_FTRACE_SELFTEST=y CONFIG_FTRACE_STARTUP_TEST=y CONFIG_SAMPLE_FTRACE_DIRECT=m CONFIG_SAMPLE_FTRACE_DIRECT_MULTI=m CONFIG_SAMPLE_FTRACE_OPS=m All tests pass. Cheers, Björn Changes in v12: - Massaged the commit messages a bit. - Squashed the samples patches, so that the rv32 support is included from the start. - Minor whitespace changes in the mcount-dyn.S. - Minor style changes. Changes in v11: https://lore.kernel.org/linux-riscv/20230627111612.761164-1-suagrfillet@gmail.com/ - append a patch that makes the DIRECT_CALL samples support RV32I in this series fixing the rv32 build failure reported by Palmer - validated with ftrace boottime selftest and manual sample modules test in qemu-system for RV32I and RV64I Changes in v10: https://lore.kernel.org/all/20230511093234.3123181-1-suagrfillet@gmail.com/ - add Acked-by from Björn Töpel in patch 2 and patch 4 - replace `move` with `mv` in patch3 - prettify patch 2/4 with proper tabs Changes in v9: https://lore.kernel.org/linux-riscv/20230510101857.2953955-1-suagrfillet@gmail.com/ 1. add Acked-by from Björn Töpel in patch 1 2. rebase patch2/patch3 on Linux v6.4-rc1 - patch 2: to make the `SAVE_ABI_REGS` configurable, revert the modification of mcount-dyn.S from commit (45b32b946a97 "riscv: entry: Consolidate general regs saving/restoring") - patch 3: to pass the trace_selftest, add the implement of `ftrace_stub_direct_tramp` from commit (fee86a4ed536 "ftrace: selftest: remove broken trace_direct_tramp") ; and fixup the context conflict in Kconfig Changes in v8: https://lore.kernel.org/linux-riscv/20230324033342.3177979-1-suagrfillet@gmail.com/ - Fix incorrect address values in the 4nd patch - Rebased on v6.3-rc2 Changes in v7: https://lore.kernel.org/linux-riscv/20230112090603.1295340-1-guoren@kernel.org/ - Fixup RESTORE_ABI_REGS by remove PT_T0(sp) overwrite. - Add FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY [1] - Fixup kconfig with HAVE_SAMPLE_FTRACE_DIRECT & HAVE_SAMPLE_FTRACE_DIRECT_MULTI Changes in v6: https://lore.kernel.org/linux-riscv/20230107133549.4192639-1-guoren@kernel.org/ - Replace 8 with MCOUNT_INSN_SIZE - Replace "REG_L a1, PT_RA(sp)" with "mv a1, ra" - Add Evgenii Shatokhin comment Changes in v5: https://lore.kernel.org/linux-riscv/20221208091244.203407-1-guoren@kernel.org/ - Sort Kconfig entries in alphabetical order. Changes in v4: https://lore.kernel.org/linux-riscv/20221129033230.255947-1-guoren@kernel.org/ - Include [3] for maintenance. [Song Shuai] Changes in V3: https://lore.kernel.org/linux-riscv/20221123153950.2911981-1-guoren@kernel.org/ - Include [2] for maintenance. [Song Shuai] [1]: https://lore.kernel.org/linux-riscv/CAAYs2=j3Eak9vU6xbAw0zPuoh00rh8v5C2U3fePkokZFibWs2g@mail.gmail.com/T/#t [2]: https://lore.kernel.org/lkml/20221120084230.910152-1-suagrfillet@gmail.com/ [3]: https://lore.kernel.org/linux-riscv/20221123142025.1504030-1-suagrfillet@gmail.com/ Song Shuai (4): riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY riscv: ftrace: Make function graph use ftrace directly riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI] arch/riscv/Kconfig | 4 + arch/riscv/include/asm/ftrace.h | 18 +- arch/riscv/kernel/ftrace.c | 30 ++- arch/riscv/kernel/mcount-dyn.S | 198 ++++++++++++++++---- samples/ftrace/ftrace-direct-modify.c | 35 ++++ samples/ftrace/ftrace-direct-multi-modify.c | 41 ++++ samples/ftrace/ftrace-direct-multi.c | 25 +++ samples/ftrace/ftrace-direct-too.c | 28 +++ samples/ftrace/ftrace-direct.c | 24 +++ 9 files changed, 348 insertions(+), 55 deletions(-) base-commit: 3ca112b71f35dd5d99fc4571a56b5fc6f0c15814