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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: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v3 0/8] powerpc/vdso32 enhancement and optimisation
Date: Tue, 29 Oct 2019 09:53:05 +0000 (UTC)	[thread overview]
Message-ID: <cover.1572342582.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

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


             reply	other threads:[~2019-10-29  9:53 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-29  9:53 Christophe Leroy [this message]
2019-10-29  9:53 ` [PATCH v3 1/8] powerpc/32: Add VDSO version of getcpu on non SMP Christophe Leroy
2019-10-29  9:53 ` [PATCH v3 2/8] powerpc/vdso32: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE Christophe Leroy
2019-11-20 12:42   ` Michael Ellerman
2019-11-20 15:17     ` Christophe Leroy
2019-11-20 23:53       ` Michael Ellerman
2019-10-29  9:53 ` [PATCH v3 3/8] powerpc: Fix vDSO clock_getres() Christophe Leroy
2019-10-29  9:53 ` [PATCH v3 4/8] powerpc/vdso32: inline __get_datapage() Christophe Leroy
2019-11-22  1:58   ` Michael Ellerman
2019-11-22  6:38     ` Michael Ellerman
2019-11-27 14:47       ` Christophe Leroy
2019-11-28  5:31         ` Michael Ellerman
2019-12-02  8:02           ` Christophe Leroy
2019-10-29  9:53 ` [PATCH v3 5/8] powerpc/vdso32: Don't read cache line size from the datapage on PPC32 Christophe Leroy
2019-10-29  9:53 ` [PATCH v3 6/8] powerpc/vdso32: use LOAD_REG_IMMEDIATE() Christophe Leroy
2019-10-29  9:53 ` [PATCH v3 7/8] powerpc/vdso32: implement clock_getres entirely Christophe Leroy
2019-10-29  9:53 ` [PATCH v3 8/8] powerpc/vdso32: miscellaneous optimisations Christophe Leroy

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