From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Steven Rostedt <rostedt@goodmis.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH 00/14] powerpc64: Add support for ftrace direct calls
Date: Thu, 26 Nov 2020 23:38:37 +0530 [thread overview]
Message-ID: <cover.1606412433.git.naveen.n.rao@linux.vnet.ibm.com> (raw)
This series adds support for DYNAMIC_FTRACE_WITH_DIRECT_CALLS for
powerpc64le.
This is mostly working fine for me, except for a soft lockup I see with
the ftrace direct selftest. It happens when irqsoff tracer is being
tested with the ftrace direct modules. This appears to be an existing
upstream issue since I am able to reproduce the lockup without these
patches. I will be looking into that to see if I can figure out the
cause of those lockups.
In the meantime, I would appreciate a review of these patches.
- Naveen
Naveen N. Rao (14):
ftrace: Fix updating FTRACE_FL_TRAMP
ftrace: Fix DYNAMIC_FTRACE_WITH_DIRECT_CALLS dependency
ftrace: Fix cleanup in error path of register_ftrace_direct()
ftrace: Remove ftrace_find_direct_func()
ftrace: Add architectural helpers for [un]register_ftrace_direct()
powerpc: Add support for CONFIG_HAVE_FUNCTION_ARG_ACCESS_API
powerpc/ftrace: Remove dead code
powerpc/ftrace: Use FTRACE_REGS_ADDR to identify the correct ftrace
trampoline
powerpc/ftrace: Use a hash table for tracking ftrace stubs
powerpc/ftrace: Drop assumptions about ftrace trampoline target
powerpc/ftrace: Use GPR save/restore macros in ftrace_graph_caller()
powerpc/ftrace: Drop saving LR to stack save area for -mprofile-kernel
powerpc/ftrace: Add support for register_ftrace_direct() for
MPROFILE_KERNEL
samples/ftrace: Add powerpc support for ftrace direct samples
arch/powerpc/Kconfig | 2 +
arch/powerpc/include/asm/ftrace.h | 14 +
arch/powerpc/include/asm/ptrace.h | 31 ++
arch/powerpc/kernel/trace/ftrace.c | 314 +++++++++++++-----
.../powerpc/kernel/trace/ftrace_64_mprofile.S | 70 ++--
include/linux/ftrace.h | 7 +-
kernel/trace/Kconfig | 2 +-
kernel/trace/ftrace.c | 130 +++-----
samples/Kconfig | 2 +-
samples/ftrace/ftrace-direct-modify.c | 58 ++++
samples/ftrace/ftrace-direct-too.c | 48 ++-
samples/ftrace/ftrace-direct.c | 45 ++-
12 files changed, 519 insertions(+), 204 deletions(-)
base-commit: 4c202167192a77481310a3cacae9f12618b92216
--
2.25.4
next reply other threads:[~2020-11-26 18:13 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 18:08 Naveen N. Rao [this message]
2020-11-26 18:08 ` [RFC PATCH 01/14] ftrace: Fix updating FTRACE_FL_TRAMP Naveen N. Rao
2020-12-01 2:23 ` Steven Rostedt
2020-12-01 13:46 ` Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 02/14] ftrace: Fix DYNAMIC_FTRACE_WITH_DIRECT_CALLS dependency Naveen N. Rao
2020-12-01 2:36 ` Steven Rostedt
2020-11-26 18:08 ` [RFC PATCH 03/14] ftrace: Fix cleanup in error path of register_ftrace_direct() Naveen N. Rao
2020-12-01 2:36 ` Steven Rostedt
2020-11-26 18:08 ` [RFC PATCH 04/14] ftrace: Remove ftrace_find_direct_func() Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 05/14] ftrace: Add architectural helpers for [un]register_ftrace_direct() Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 06/14] powerpc: Add support for CONFIG_HAVE_FUNCTION_ARG_ACCESS_API Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 07/14] powerpc/ftrace: Remove dead code Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 08/14] powerpc/ftrace: Use FTRACE_REGS_ADDR to identify the correct ftrace trampoline Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 09/14] powerpc/ftrace: Use a hash table for tracking ftrace stubs Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 10/14] powerpc/ftrace: Drop assumptions about ftrace trampoline target Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 11/14] powerpc/ftrace: Use GPR save/restore macros in ftrace_graph_caller() Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 12/14] powerpc/ftrace: Drop saving LR to stack save area for -mprofile-kernel Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 13/14] powerpc/ftrace: Add support for register_ftrace_direct() for MPROFILE_KERNEL Naveen N. Rao
2020-11-26 18:08 ` [RFC PATCH 14/14] samples/ftrace: Add powerpc support for ftrace direct samples Naveen N. Rao
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