From: Sven Schnelle <svens@stackframe.org>
To: deller@gmx.de
Cc: linux-parisc@vger.kernel.org, Sven Schnelle <svens@stackframe.org>
Subject: [PATCH v2 0/6] Dynamic FTRACE for PA-RISC
Date: Tue, 4 Jun 2019 20:34:29 +0200 [thread overview]
Message-ID: <20190604183435.20175-1-svens@stackframe.org> (raw)
Hi List,
this series adds support for dynamic ftrace. See the commit message of
the patch for a explanation how it works. For testing, you need a patched
version of gcc because the current version has a bug which misplaces the
function label. John David Anglin can provide a patch which fixes this issue.
This issue is tracked here: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90751
Changes to v1:
- replace a few hardcoded size by sizeof()
- change len parameter of patch_text_multiple() to unsigned
- add link to gcc bugtracker
Sven Schnelle (6):
parisc: add support for patching multiple words
parisc: add spinlock to patch function
parisc: add WARN_ON() to clear_fixmap
parisc: use pr_debug() in kernel/module.c
compiler.h: add CC_USING_PATCHABLE_FUNCTION_ENTRY
parisc: add dynamic ftrace
arch/parisc/Kconfig | 2 +
arch/parisc/Makefile | 18 +++++
arch/parisc/include/asm/ftrace.h | 15 +++-
arch/parisc/include/asm/patch.h | 4 +-
arch/parisc/kernel/Makefile | 9 ++-
arch/parisc/kernel/entry.S | 64 +++++++++++++++
arch/parisc/kernel/ftrace.c | 129 +++++++++++++++++++++++++++---
arch/parisc/kernel/module.c | 64 +++++++++------
arch/parisc/kernel/module.lds | 7 ++
arch/parisc/kernel/patch.c | 88 ++++++++++++++++----
arch/parisc/kernel/vmlinux.lds.S | 2 +
arch/parisc/mm/fixmap.c | 7 +-
include/asm-generic/vmlinux.lds.h | 7 ++
include/linux/compiler_types.h | 2 +
14 files changed, 358 insertions(+), 60 deletions(-)
create mode 100644 arch/parisc/kernel/module.lds
--
2.20.1
next reply other threads:[~2019-06-04 18:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-04 18:34 Sven Schnelle [this message]
2019-06-04 18:34 ` [PATCH v2 1/6] parisc: add support for patching multiple words Sven Schnelle
2019-06-04 19:21 ` Rolf Eike Beer
2019-06-05 20:21 ` Sven Schnelle
2019-06-04 18:34 ` [PATCH v2 2/6] parisc: add spinlock to patch function Sven Schnelle
2019-06-04 18:34 ` [PATCH v2 3/6] parisc: add WARN_ON() to clear_fixmap Sven Schnelle
2019-06-04 18:34 ` [PATCH v2 4/6] parisc: use pr_debug() in kernel/module.c Sven Schnelle
2019-06-04 18:34 ` [PATCH v2 5/6] compiler.h: add CC_USING_PATCHABLE_FUNCTION_ENTRY Sven Schnelle
2019-06-04 18:34 ` [PATCH v2 6/6] parisc: add dynamic ftrace Sven Schnelle
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