From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
nathanl@linux.ibm.com, anton@ozlabs.org
Cc: linux-arch@vger.kernel.org, arnd@arndb.de,
linux-kernel@vger.kernel.org, luto@kernel.org,
tglx@linutronix.de, vincenzo.frascino@arm.com,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v12 0/5] powerpc: switch VDSO to C implementation
Date: Tue, 29 Sep 2020 07:58:22 +0000 (UTC) [thread overview]
Message-ID: <cover.1601365869.git.christophe.leroy@csgroup.eu> (raw)
This is a series to switch powerpc VDSO to generic C implementation.
Changes in v12:
- Rebased to today's powerpc/merge branch (Conflicts on VDSO Makefiles)
- Added missing prototype for __kernel_clock_gettime64()
Changes in v11:
- Rebased to today's powerpc/merge branch
- Prototype of __arch_get_hw_counter() was modified in mainline (patch 2)
Changes in v10 are:
- Added a comment explaining the reason for the double stack frame
- Moved back .cfi_register lr next to mflr
Main changes in v9 are:
- Dropped the patches which put the VDSO datapage in front of VDSO text in the mapping
- Adds a second stack frame because the caller doesn't set one, at least on PPC64
- Saving the TOC pointer on PPC64 (is that really needed ?)
This series applies on today's powerpc/merge branch.
See the last patches for details on changes and performance.
Christophe Leroy (5):
powerpc/processor: Move cpu_relax() into asm/vdso/processor.h
powerpc/vdso: Prepare for switching VDSO to generic C implementation.
powerpc/vdso: Save and restore TOC pointer on PPC64
powerpc/vdso: Switch VDSO to generic C implementation.
powerpc/vdso: Provide __kernel_clock_gettime64() on vdso32
arch/powerpc/Kconfig | 2 +
arch/powerpc/include/asm/clocksource.h | 7 +
arch/powerpc/include/asm/processor.h | 13 +-
arch/powerpc/include/asm/vdso/clocksource.h | 7 +
arch/powerpc/include/asm/vdso/gettimeofday.h | 200 +++++++++++++
arch/powerpc/include/asm/vdso/processor.h | 23 ++
arch/powerpc/include/asm/vdso/vsyscall.h | 25 ++
arch/powerpc/include/asm/vdso_datapage.h | 40 +--
arch/powerpc/kernel/asm-offsets.c | 49 +--
arch/powerpc/kernel/time.c | 91 +-----
arch/powerpc/kernel/vdso.c | 5 +-
arch/powerpc/kernel/vdso32/Makefile | 32 +-
arch/powerpc/kernel/vdso32/config-fake32.h | 34 +++
arch/powerpc/kernel/vdso32/gettimeofday.S | 300 +------------------
arch/powerpc/kernel/vdso32/vdso32.lds.S | 1 +
arch/powerpc/kernel/vdso32/vgettimeofday.c | 35 +++
arch/powerpc/kernel/vdso64/Makefile | 23 +-
arch/powerpc/kernel/vdso64/gettimeofday.S | 242 +--------------
arch/powerpc/kernel/vdso64/vgettimeofday.c | 29 ++
19 files changed, 456 insertions(+), 702 deletions(-)
create mode 100644 arch/powerpc/include/asm/clocksource.h
create mode 100644 arch/powerpc/include/asm/vdso/clocksource.h
create mode 100644 arch/powerpc/include/asm/vdso/gettimeofday.h
create mode 100644 arch/powerpc/include/asm/vdso/processor.h
create mode 100644 arch/powerpc/include/asm/vdso/vsyscall.h
create mode 100644 arch/powerpc/kernel/vdso32/config-fake32.h
create mode 100644 arch/powerpc/kernel/vdso32/vgettimeofday.c
create mode 100644 arch/powerpc/kernel/vdso64/vgettimeofday.c
--
2.25.0
next reply other threads:[~2020-09-29 8:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-29 7:58 Christophe Leroy [this message]
2020-09-29 7:58 ` [PATCH v12 1/5] powerpc/processor: Move cpu_relax() into asm/vdso/processor.h Christophe Leroy
2020-09-29 7:58 ` [PATCH v12 2/5] powerpc/vdso: Prepare for switching VDSO to generic C implementation Christophe Leroy
2020-09-29 7:58 ` [PATCH v12 3/5] powerpc/vdso: Save and restore TOC pointer on PPC64 Christophe Leroy
2020-09-29 7:58 ` [PATCH v12 4/5] powerpc/vdso: Switch VDSO to generic C implementation Christophe Leroy
2020-09-29 7:58 ` [PATCH v12 5/5] powerpc/vdso: Provide __kernel_clock_gettime64() on vdso32 Christophe Leroy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cover.1601365869.git.christophe.leroy@csgroup.eu \
--to=christophe.leroy@csgroup.eu \
--cc=anton@ozlabs.org \
--cc=arnd@arndb.de \
--cc=benh@kernel.crashing.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=luto@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=nathanl@linux.ibm.com \
--cc=paulus@samba.org \
--cc=tglx@linutronix.de \
--cc=vincenzo.frascino@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).