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 5/5] powerpc/vdso: Provide __kernel_clock_gettime64() on vdso32
Date: Tue, 29 Sep 2020 07:58:27 +0000 (UTC) [thread overview]
Message-ID: <d7c1fd375fbf4b88993eea64e0df085e38117cdc.1601365870.git.christophe.leroy@csgroup.eu> (raw)
In-Reply-To: <cover.1601365869.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>
---
v12: Added missing prototype
---
arch/powerpc/include/asm/vdso/gettimeofday.h | 2 ++
arch/powerpc/kernel/vdso32/gettimeofday.S | 9 +++++++++
arch/powerpc/kernel/vdso32/vdso32.lds.S | 1 +
arch/powerpc/kernel/vdso32/vgettimeofday.c | 6 ++++++
4 files changed, 18 insertions(+)
diff --git a/arch/powerpc/include/asm/vdso/gettimeofday.h b/arch/powerpc/include/asm/vdso/gettimeofday.h
index 59a609a48b63..8da84722729b 100644
--- a/arch/powerpc/include/asm/vdso/gettimeofday.h
+++ b/arch/powerpc/include/asm/vdso/gettimeofday.h
@@ -186,6 +186,8 @@ int __c_kernel_clock_getres(clockid_t clock_id, struct __kernel_timespec *res,
#else
int __c_kernel_clock_gettime(clockid_t clock, struct old_timespec32 *ts,
const struct vdso_data *vd);
+int __c_kernel_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts,
+ const struct vdso_data *vd);
int __c_kernel_clock_getres(clockid_t clock_id, struct old_timespec32 *res,
const struct vdso_data *vd);
#endif
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 5206c2eb2a1d..af5812ca5dce 100644
--- a/arch/powerpc/kernel/vdso32/vdso32.lds.S
+++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S
@@ -147,6 +147,7 @@ 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
prev parent reply other threads:[~2020-09-29 8:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-29 7:58 [PATCH v12 0/5] powerpc: switch VDSO to C implementation Christophe Leroy
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 ` Christophe Leroy [this message]
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