From: Naveen N Rao <naveen@kernel.org>
To: <linuxppc-dev@lists.ozlabs.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Subject: [PATCH 00/17] powerpc/ftrace: refactor and add support for -fpatchable-function-entry
Date: Mon, 19 Jun 2023 15:17:18 +0530 [thread overview]
Message-ID: <cover.1687166935.git.naveen@kernel.org> (raw)
Since RFC (*):
- Patches 1 and 17 have been included in this series due to
dependencies. Both had been posted out separately.
- Patch 10 has a small change to not throw errors when checking
instruction sequence generated by older toolchains.
This has had more testing since and this looks good to me. Christophe
mentioned that this results in a slowdown with ftrace [de-]activation on
ppc32, but that isn't performance critical and we can address that
separately.
(*) http://lore.kernel.org/cover.1686151854.git.naveen@kernel.org
- Naveen
Naveen N Rao (17):
powerpc/ftrace: Fix dropping weak symbols with older toolchains
powerpc/module: Remove unused .ftrace.tramp section
powerpc64/ftrace: Move ELFv1 and -pg support code into a separate file
powerpc/ftrace: Simplify function_graph support in ftrace.c
powerpc/ftrace: Use FTRACE_REGS_ADDR to identify the correct ftrace
trampoline
powerpc/ftrace: Extend ftrace support for large kernels to ppc32
powerpc/ftrace: Consolidate ftrace support into fewer files
powerpc/ftrace: Refactor ftrace_modify_code()
powerpc/ftrace: Stop re-purposing linker generated long branches for
ftrace
powerpc/ftrace: Add separate ftrace_init_nop() with additional
validation
powerpc/ftrace: Simplify ftrace_make_nop()
powerpc/ftrace: Simplify ftrace_make_call()
powerpc/ftrace: Simplify ftrace_modify_call()
powerpc/ftrace: Replace use of ftrace_call_replace() with
ftrace_create_branch_inst()
powerpc/ftrace: Implement ftrace_replace_code()
powerpc/ftrace: Add support for -fpatchable-function-entry
powerpc/ftrace: Create a dummy stackframe to fix stack unwind
arch/powerpc/Kconfig | 14 +-
arch/powerpc/Makefile | 5 +
arch/powerpc/include/asm/ftrace.h | 24 +-
arch/powerpc/include/asm/module.h | 4 -
arch/powerpc/include/asm/sections.h | 2 +
arch/powerpc/include/asm/vermagic.h | 4 +-
arch/powerpc/kernel/module_64.c | 2 +-
arch/powerpc/kernel/trace/Makefile | 12 +-
arch/powerpc/kernel/trace/ftrace.c | 910 +++++-------------
arch/powerpc/kernel/trace/ftrace_64_pg.S | 67 --
arch/powerpc/kernel/trace/ftrace_64_pg.c | 846 ++++++++++++++++
.../{ftrace_low.S => ftrace_64_pg_entry.S} | 64 +-
.../{ftrace_mprofile.S => ftrace_entry.S} | 78 +-
arch/powerpc/kernel/vmlinux.lds.S | 4 -
.../gcc-check-fpatchable-function-entry.sh | 26 +
15 files changed, 1288 insertions(+), 774 deletions(-)
delete mode 100644 arch/powerpc/kernel/trace/ftrace_64_pg.S
create mode 100644 arch/powerpc/kernel/trace/ftrace_64_pg.c
rename arch/powerpc/kernel/trace/{ftrace_low.S => ftrace_64_pg_entry.S} (54%)
rename arch/powerpc/kernel/trace/{ftrace_mprofile.S => ftrace_entry.S} (79%)
create mode 100755 arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh
base-commit: 12ffddc6444780aec83fa5086673ec005c0bace4
--
2.40.1
next reply other threads:[~2023-06-19 9:52 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-19 9:47 Naveen N Rao [this message]
2023-06-19 9:47 ` [PATCH 01/17] powerpc/ftrace: Fix dropping weak symbols with older toolchains Naveen N Rao
2023-06-23 5:10 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 02/17] powerpc/module: Remove unused .ftrace.tramp section Naveen N Rao
2023-06-23 5:12 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 03/17] powerpc64/ftrace: Move ELFv1 and -pg support code into a separate file Naveen N Rao
2023-06-23 5:13 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 04/17] powerpc/ftrace: Simplify function_graph support in ftrace.c Naveen N Rao
2023-06-23 5:14 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 05/17] powerpc/ftrace: Use FTRACE_REGS_ADDR to identify the correct ftrace trampoline Naveen N Rao
2023-06-23 5:15 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 06/17] powerpc/ftrace: Extend ftrace support for large kernels to ppc32 Naveen N Rao
2023-06-23 5:21 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 07/17] powerpc/ftrace: Consolidate ftrace support into fewer files Naveen N Rao
2023-06-23 5:25 ` Christophe Leroy
2023-06-28 7:32 ` Naveen N Rao
2023-06-19 9:47 ` [PATCH 08/17] powerpc/ftrace: Refactor ftrace_modify_code() Naveen N Rao
2023-06-23 5:27 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 09/17] powerpc/ftrace: Stop re-purposing linker generated long branches for ftrace Naveen N Rao
2023-06-23 5:28 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 10/17] powerpc/ftrace: Add separate ftrace_init_nop() with additional validation Naveen N Rao
2023-06-23 5:29 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 11/17] powerpc/ftrace: Simplify ftrace_make_nop() Naveen N Rao
2023-06-23 5:30 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 12/17] powerpc/ftrace: Simplify ftrace_make_call() Naveen N Rao
2023-06-23 5:30 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 13/17] powerpc/ftrace: Simplify ftrace_modify_call() Naveen N Rao
2023-06-23 5:31 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 14/17] powerpc/ftrace: Replace use of ftrace_call_replace() with ftrace_create_branch_inst() Naveen N Rao
2023-06-23 5:32 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 15/17] powerpc/ftrace: Implement ftrace_replace_code() Naveen N Rao
2023-06-23 5:32 ` Christophe Leroy
2023-06-19 9:47 ` [PATCH 16/17] powerpc/ftrace: Add support for -fpatchable-function-entry Naveen N Rao
2023-06-23 5:37 ` Christophe Leroy
2023-06-28 7:40 ` Naveen N Rao
2023-06-19 9:47 ` [PATCH 17/17] powerpc/ftrace: Create a dummy stackframe to fix stack unwind Naveen N Rao
2023-06-23 5:40 ` Christophe Leroy
2023-06-28 7:43 ` Naveen N Rao
2023-08-23 11:55 ` [PATCH 00/17] powerpc/ftrace: refactor and add support for -fpatchable-function-entry Michael Ellerman
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