linux-kernel - [PATCH 0/2] function_graph: ftrace_graph_ret

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Message-ID: <20240611030934.162955582@goodmis.org>
Date: Mon, 10 Jun 2024 23:09:34 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org,
 linux-csky@...r.kernel.org,
 loongarch@...ts.linux.dev,
 linuxppc-dev@...ts.ozlabs.org,
 linux-riscv@...ts.infradead.org,
 linux-s390@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Jonathan Corbet <corbet@....net>,
 Catalin Marinas <catalin.marinas@....com>,
 Will Deacon <will@...nel.org>,
 Guo Ren <guoren@...nel.org>,
 Huacai Chen <chenhuacai@...nel.org>,
 WANG Xuerui <kernel@...0n.name>,
 Michael Ellerman <mpe@...erman.id.au>,
 Nicholas Piggin <npiggin@...il.com>,
 Christophe Leroy <christophe.leroy@...roup.eu>,
 "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
 Paul Walmsley <paul.walmsley@...ive.com>,
 Palmer Dabbelt <palmer@...belt.com>,
 Albert Ou <aou@...s.berkeley.edu>,
 Heiko Carstens <hca@...ux.ibm.com>,
 Vasily Gorbik <gor@...ux.ibm.com>,
 Alexander Gordeev <agordeev@...ux.ibm.com>,
 Christian Borntraeger <borntraeger@...ux.ibm.com>,
 Sven Schnelle <svens@...ux.ibm.com>,
 Thomas Gleixner <tglx@...utronix.de>,
 Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 x86@...nel.org,
 "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 0/2] function_graph: ftrace_graph_ret_addr(); there can be only one!

I noticed a slight bug in ftrace_graph_ret_addr() for when
HAVE_FUNCTION_GRAPH_RET_ADDR_PTR was defined and fixed it up.
I then noticed it was buggy when not defined. Looking for an
architecture that did not have it defined, I couldn't find any.
So I removed it.

Steven Rostedt (Google) (2):
      function_graph: Fix up ftrace_graph_ret_addr()
      function_graph: Everyone uses HAVE_FUNCTION_GRAPH_RET_ADDR_PTR, remove it

----
 Documentation/trace/ftrace-design.rst | 12 -------
 arch/arm64/include/asm/ftrace.h       | 11 -------
 arch/csky/include/asm/ftrace.h        |  2 --
 arch/loongarch/include/asm/ftrace.h   |  1 -
 arch/powerpc/include/asm/ftrace.h     |  2 --
 arch/riscv/include/asm/ftrace.h       |  1 -
 arch/s390/include/asm/ftrace.h        |  1 -
 arch/x86/include/asm/ftrace.h         |  2 --
 include/linux/ftrace.h                |  2 --
 kernel/trace/fgraph.c                 | 61 ++++++++++++-----------------------
 10 files changed, 20 insertions(+), 75 deletions(-)