From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
arnd@arndb.de
Subject: [PATCH v4 0/8] powerpc/vdso32 enhancement and optimisation
Date: Mon, 2 Dec 2019 07:57:26 +0000 (UTC) [thread overview]
Message-ID: <cover.1575273217.git.christophe.leroy@c-s.fr> (raw)
This series:
- adds getcpu() on non SMP ppc32
- adds coarse clocks in clock_gettime
- fixes and adds all clocks in clock_getres
- optimises the retrieval of the datapage address
- optimises the cache functions
v4:
- Rebased on top of ceb307474506 ("Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground")
- Fixed build failure with old binutils reported by mpe (patch 4)
v3:
- Dropped the 'fast syscall' hack for getcpu() on SMP.
- Moved get_datapage macro into asm/vdso_datapage.h so that it can be used on PPC64 as well.
v2:
- Used named labels in patch 2
- Added patch from Vincenzo to fix clock_getres() (patch 3)
- Removed unnecessary label in patch 4 as suggested by Segher
- Added patches 5 to 8
Christophe Leroy (8):
powerpc/32: Add VDSO version of getcpu on non SMP
powerpc/vdso32: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE
powerpc: Fix vDSO clock_getres()
powerpc/vdso32: inline __get_datapage()
powerpc/vdso32: Don't read cache line size from the datapage on PPC32.
powerpc/vdso32: use LOAD_REG_IMMEDIATE()
powerpc/vdso32: implement clock_getres entirely
powerpc/vdso32: miscellaneous optimisations
arch/powerpc/include/asm/vdso_datapage.h | 16 +++-
arch/powerpc/kernel/asm-offsets.c | 7 +-
arch/powerpc/kernel/time.c | 1 +
arch/powerpc/kernel/vdso.c | 5 --
arch/powerpc/kernel/vdso32/Makefile | 4 +-
arch/powerpc/kernel/vdso32/cacheflush.S | 32 ++++++--
arch/powerpc/kernel/vdso32/datapage.S | 31 +-------
arch/powerpc/kernel/vdso32/getcpu.S | 23 +++++-
arch/powerpc/kernel/vdso32/gettimeofday.S | 124 +++++++++++++++++++++---------
arch/powerpc/kernel/vdso32/vdso32.lds.S | 2 +-
arch/powerpc/kernel/vdso64/gettimeofday.S | 7 +-
11 files changed, 164 insertions(+), 88 deletions(-)
--
2.13.3
next reply other threads:[~2019-12-02 8:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-02 7:57 Christophe Leroy [this message]
2019-12-02 7:57 ` [PATCH v4 1/8] powerpc/32: Add VDSO version of getcpu on non SMP Christophe Leroy
2020-01-29 5:17 ` Michael Ellerman
2019-12-02 7:57 ` [PATCH v4 2/8] powerpc/vdso32: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE Christophe Leroy
2019-12-02 7:57 ` [PATCH v4 3/8] powerpc: Fix vDSO clock_getres() Christophe Leroy
2019-12-04 13:30 ` Michael Ellerman
2019-12-02 7:57 ` [PATCH v4 4/8] powerpc/vdso32: inline __get_datapage() Christophe Leroy
2019-12-02 7:57 ` [PATCH v4 5/8] powerpc/vdso32: Don't read cache line size from the datapage on PPC32 Christophe Leroy
2019-12-02 7:57 ` [PATCH v4 6/8] powerpc/vdso32: use LOAD_REG_IMMEDIATE() Christophe Leroy
2019-12-02 7:57 ` [PATCH v4 7/8] powerpc/vdso32: implement clock_getres entirely Christophe Leroy
2020-05-05 22:52 ` Aurelien Jarno
2019-12-02 7:57 ` [PATCH v4 8/8] powerpc/vdso32: miscellaneous optimisations Christophe Leroy
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