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-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
arnd@arndb.de, tglx@linutronix.de, vincenzo.frascino@arm.com,
luto@kernel.org, linux-arch@vger.kernel.org
Subject: [PATCH v9 5/5] powerpc/vdso: Provide __kernel_clock_gettime64() on vdso32
Date: Tue, 4 Aug 2020 11:47:52 +0000 (UTC) [thread overview]
Message-ID: <21e46e2f81e5db4675be113ef00edbf398398dc9.1596541334.git.christophe.leroy@csgroup.eu> (raw)
In-Reply-To: <cover.1596541334.git.christophe.leroy@csgroup.eu>
Provides __kernel_clock_gettime64() on vdso32. This is the
64 bits version of __kernel_clock_gettime() which is
y2038 compliant.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
arch/powerpc/kernel/vdso32/gettimeofday.S | 9 +++++++++
arch/powerpc/kernel/vdso32/vdso32.lds.S | 1 +
arch/powerpc/kernel/vdso32/vgettimeofday.c | 6 ++++++
3 files changed, 16 insertions(+)
diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S b/arch/powerpc/kernel/vdso32/gettimeofday.S
index fd7b01c51281..a6e29f880e0e 100644
--- a/arch/powerpc/kernel/vdso32/gettimeofday.S
+++ b/arch/powerpc/kernel/vdso32/gettimeofday.S
@@ -35,6 +35,15 @@ V_FUNCTION_BEGIN(__kernel_clock_gettime)
cvdso_call __c_kernel_clock_gettime
V_FUNCTION_END(__kernel_clock_gettime)
+/*
+ * Exact prototype of clock_gettime64()
+ *
+ * int __kernel_clock_gettime64(clockid_t clock_id, struct __timespec64 *ts);
+ *
+ */
+V_FUNCTION_BEGIN(__kernel_clock_gettime64)
+ cvdso_call __c_kernel_clock_gettime64
+V_FUNCTION_END(__kernel_clock_gettime64)
/*
* Exact prototype of clock_getres()
diff --git a/arch/powerpc/kernel/vdso32/vdso32.lds.S b/arch/powerpc/kernel/vdso32/vdso32.lds.S
index 4c985467a668..582c5b046cc9 100644
--- a/arch/powerpc/kernel/vdso32/vdso32.lds.S
+++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S
@@ -148,6 +148,7 @@ VERSION
#ifndef CONFIG_PPC_BOOK3S_601
__kernel_gettimeofday;
__kernel_clock_gettime;
+ __kernel_clock_gettime64;
__kernel_clock_getres;
__kernel_time;
__kernel_get_tbfreq;
diff --git a/arch/powerpc/kernel/vdso32/vgettimeofday.c b/arch/powerpc/kernel/vdso32/vgettimeofday.c
index 0b9ab4c22ef2..f7f71fecf4ed 100644
--- a/arch/powerpc/kernel/vdso32/vgettimeofday.c
+++ b/arch/powerpc/kernel/vdso32/vgettimeofday.c
@@ -11,6 +11,12 @@ int __c_kernel_clock_gettime(clockid_t clock, struct old_timespec32 *ts,
return __cvdso_clock_gettime32_data(vd, clock, ts);
}
+int __c_kernel_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts,
+ const struct vdso_data *vd)
+{
+ return __cvdso_clock_gettime_data(vd, clock, ts);
+}
+
int __c_kernel_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz,
const struct vdso_data *vd)
{
--
2.25.0
next prev parent reply other threads:[~2020-08-04 11:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-04 11:47 [PATCH v9 0/5] powerpc: switch VDSO to C implementation Christophe Leroy
2020-08-04 11:47 ` [PATCH v9 1/5] powerpc/processor: Move cpu_relax() into asm/vdso/processor.h Christophe Leroy
2020-08-04 11:47 ` Christophe Leroy
2020-08-04 11:47 ` [PATCH v9 2/5] powerpc/vdso: Prepare for switching VDSO to generic C implementation Christophe Leroy
2020-08-04 11:47 ` Christophe Leroy
2020-08-04 11:47 ` [PATCH v9 3/5] powerpc/vdso: Save and restore TOC pointer on PPC64 Christophe Leroy
2020-08-04 11:47 ` Christophe Leroy
2020-08-04 11:47 ` [PATCH v9 4/5] powerpc/vdso: Switch VDSO to generic C implementation Christophe Leroy
2020-08-04 11:47 ` Christophe Leroy [this message]
2020-08-04 11:47 ` [PATCH v9 5/5] powerpc/vdso: Provide __kernel_clock_gettime64() on vdso32 Christophe Leroy
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