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 6/8] powerpc/vdso32: use LOAD_REG_IMMEDIATE()
Date: Mon, 2 Dec 2019 07:57:32 +0000 (UTC) [thread overview]
Message-ID: <36f111437e66e601929308f5d5dce230e1ce472f.1575273217.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1575273217.git.christophe.leroy@c-s.fr>
Use LOAD_REG_IMMEDIATE() to load registers with immediate value.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/kernel/vdso32/gettimeofday.S | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S b/arch/powerpc/kernel/vdso32/gettimeofday.S
index 74973548529a..9aafacea9c4a 100644
--- a/arch/powerpc/kernel/vdso32/gettimeofday.S
+++ b/arch/powerpc/kernel/vdso32/gettimeofday.S
@@ -37,8 +37,7 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday)
get_datapage r9, r0
cmplwi r10,0 /* check if tv is NULL */
beq 3f
- lis r7,1000000@ha /* load up USEC_PER_SEC */
- addi r7,r7,1000000@l /* so we get microseconds in r4 */
+ LOAD_REG_IMMEDIATE(r7, 1000000) /* load up USEC_PER_SEC */
bl __do_get_tspec@local /* get sec/usec from tb & kernel */
stw r3,TVAL32_TV_SEC(r10)
stw r4,TVAL32_TV_USEC(r10)
@@ -81,8 +80,7 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
.cfi_register lr,r12
mr r11,r4 /* r11 saves tp */
get_datapage r9, r0
- lis r7,NSEC_PER_SEC@h /* want nanoseconds */
- ori r7,r7,NSEC_PER_SEC@l
+ LOAD_REG_IMMEDIATE(r7, NSEC_PER_SEC) /* load up NSEC_PER_SEC */
beq cr5, .Lcoarse_clocks
.Lprecise_clocks:
bl __do_get_tspec@local /* get sec/nsec from tb & kernel */
--
2.13.3
next prev parent reply other threads:[~2019-12-02 8:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-02 7:57 [PATCH v4 0/8] powerpc/vdso32 enhancement and optimisation Christophe Leroy
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 ` Christophe Leroy [this message]
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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