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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>,
	arnd@arndb.de, tglx@linutronix.de, vincenzo.frascino@arm.com,
	luto@kernel.org
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org,
	x86@kernel.org
Subject: [RFC PATCH v2 08/10] lib: vdso: Avoid duplication in __cvdso_clock_getres()
Date: Mon, 23 Dec 2019 14:31:09 +0000 (UTC)	[thread overview]
Message-ID: <fdf1a968a8f7edd61456f1689ac44082ebb19c15.1577111367.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1577111363.git.christophe.leroy@c-s.fr>

VDSO_HRES and VDSO_RAW clocks are handled the same way.

Don't duplicate code.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 lib/vdso/gettimeofday.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index 5a17a9d2e6cd..aa4a167bf1e0 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -172,7 +172,7 @@ int __cvdso_clock_getres(const struct vdso_data *vd, clockid_t clock,
 	 * clocks are handled in the VDSO directly.
 	 */
 	msk = 1U << clock;
-	if (msk & VDSO_HRES) {
+	if (msk & (VDSO_HRES | VDSO_RAW)) {
 		/*
 		 * Preserves the behaviour of posix_get_hrtimer_res().
 		 */
@@ -182,11 +182,6 @@ int __cvdso_clock_getres(const struct vdso_data *vd, clockid_t clock,
 		 * Preserves the behaviour of posix_get_coarse_res().
 		 */
 		ns = LOW_RES_NSEC;
-	} else if (msk & VDSO_RAW) {
-		/*
-		 * Preserves the behaviour of posix_get_hrtimer_res().
-		 */
-		ns = hrtimer_res;
 	} else {
 		return -1;
 	}
-- 
2.13.3


WARNING: multiple messages have this Message-ID
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>,
	 arnd@arndb.de, tglx@linutronix.de, vincenzo.frascino@arm.com,
	luto@kernel.org
Cc: x86@kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org
Subject: [RFC PATCH v2 08/10] lib: vdso: Avoid duplication in __cvdso_clock_getres()
Date: Mon, 23 Dec 2019 14:31:09 +0000 (UTC)	[thread overview]
Message-ID: <fdf1a968a8f7edd61456f1689ac44082ebb19c15.1577111367.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1577111363.git.christophe.leroy@c-s.fr>

VDSO_HRES and VDSO_RAW clocks are handled the same way.

Don't duplicate code.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 lib/vdso/gettimeofday.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index 5a17a9d2e6cd..aa4a167bf1e0 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -172,7 +172,7 @@ int __cvdso_clock_getres(const struct vdso_data *vd, clockid_t clock,
 	 * clocks are handled in the VDSO directly.
 	 */
 	msk = 1U << clock;
-	if (msk & VDSO_HRES) {
+	if (msk & (VDSO_HRES | VDSO_RAW)) {
 		/*
 		 * Preserves the behaviour of posix_get_hrtimer_res().
 		 */
@@ -182,11 +182,6 @@ int __cvdso_clock_getres(const struct vdso_data *vd, clockid_t clock,
 		 * Preserves the behaviour of posix_get_coarse_res().
 		 */
 		ns = LOW_RES_NSEC;
-	} else if (msk & VDSO_RAW) {
-		/*
-		 * Preserves the behaviour of posix_get_hrtimer_res().
-		 */
-		ns = hrtimer_res;
 	} else {
 		return -1;
 	}
-- 
2.13.3


WARNING: multiple messages have this Message-ID
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>,
	 arnd@arndb.de, tglx@linutronix.de, vincenzo.frascino@arm.com,
	luto@kernel.org
Cc: x86@kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org
Subject: [RFC PATCH v2 08/10] lib: vdso: Avoid duplication in __cvdso_clock_getres()
Date: Mon, 23 Dec 2019 14:31:09 +0000 (UTC)	[thread overview]
Message-ID: <fdf1a968a8f7edd61456f1689ac44082ebb19c15.1577111367.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1577111363.git.christophe.leroy@c-s.fr>

VDSO_HRES and VDSO_RAW clocks are handled the same way.

Don't duplicate code.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 lib/vdso/gettimeofday.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index 5a17a9d2e6cd..aa4a167bf1e0 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -172,7 +172,7 @@ int __cvdso_clock_getres(const struct vdso_data *vd, clockid_t clock,
 	 * clocks are handled in the VDSO directly.
 	 */
 	msk = 1U << clock;
-	if (msk & VDSO_HRES) {
+	if (msk & (VDSO_HRES | VDSO_RAW)) {
 		/*
 		 * Preserves the behaviour of posix_get_hrtimer_res().
 		 */
@@ -182,11 +182,6 @@ int __cvdso_clock_getres(const struct vdso_data *vd, clockid_t clock,
 		 * Preserves the behaviour of posix_get_coarse_res().
 		 */
 		ns = LOW_RES_NSEC;
-	} else if (msk & VDSO_RAW) {
-		/*
-		 * Preserves the behaviour of posix_get_hrtimer_res().
-		 */
-		ns = hrtimer_res;
 	} else {
 		return -1;
 	}
-- 
2.13.3


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-12-23 14:31 UTC|newest]

Thread overview: 133+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-23 14:31 [RFC PATCH v2 00/10] powerpc/32: switch VDSO to C implementation Christophe Leroy
2019-12-23 14:31 ` [RFC PATCH v2 01/10] lib: vdso: ensure all arches have 32bit fallback Christophe Leroy
2019-12-24  2:07   ` Andy Lutomirski
2020-01-10 20:56     ` Thomas Gleixner
2020-01-10 21:02       ` Andy Lutomirski
2019-12-30 12:27   ` Arnd Bergmann
2020-01-02 11:29     ` Arnd Bergmann
2020-01-09 15:43       ` Christophe Leroy
2019-12-23 14:31 ` [RFC PATCH v2 02/10] lib: vdso: move call to fallback out of common code Christophe Leroy
2019-12-24  2:24   ` Andy Lutomirski
2019-12-24 11:41     ` christophe leroy
2019-12-24 12:09       ` Andy Lutomirski
2019-12-23 14:31 ` [RFC PATCH v2 03/10] lib: vdso: Change __cvdso_clock_gettime/getres_common() to __cvdso_clock_gettime/getres() Christophe Leroy
2019-12-23 14:31 ` [RFC PATCH v2 04/10] lib: vdso: get pointer to vdso data from the arch Christophe Leroy
2019-12-24  2:27   ` Andy Lutomirski
2019-12-24 11:53     ` christophe leroy
2019-12-24 12:15       ` Andy Lutomirski
2019-12-24 12:41         ` Andy Lutomirski
2019-12-24 14:46         ` Segher Boessenkool
2019-12-23 14:31 ` [RFC PATCH v2 05/10] lib: vdso: inline do_hres() Christophe Leroy
2019-12-24  2:29   ` Andy Lutomirski
2019-12-30 12:07   ` Arnd Bergmann
2020-01-10 21:07     ` Thomas Gleixner
2020-01-11  9:06       ` Christophe Leroy
2019-12-23 14:31 ` [RFC PATCH v2 06/10] lib: vdso: make do_coarse() return 0 Christophe Leroy
2019-12-23 14:31 ` [RFC PATCH v2 07/10] lib: vdso: don't use READ_ONCE() in __c_kernel_time() Christophe Leroy
2019-12-24  1:58   ` Andy Lutomirski
2019-12-24 11:12     ` christophe leroy
2019-12-24 12:04       ` Andy Lutomirski
2020-01-10 21:12   ` Thomas Gleixner
2020-01-11  8:05     ` Christophe Leroy
2020-01-11 11:07       ` Thomas Gleixner
2020-01-13  6:52         ` Christophe Leroy
2019-12-23 14:31 ` Christophe Leroy [this message]
2019-12-24  1:59   ` [RFC PATCH v2 08/10] lib: vdso: Avoid duplication in __cvdso_clock_getres() Andy Lutomirski
2019-12-23 14:31 ` [RFC PATCH v2 09/10] powerpc/vdso32: inline __get_datapage() Christophe Leroy
2019-12-23 14:31 ` [RFC PATCH v2 10/10] powerpc/32: Switch VDSO to C implementation Christophe Leroy
2020-01-09 17:52 ` Surprising code generated for vdso_read_begin() Christophe Leroy
2020-01-09 20:07   ` Segher Boessenkool
2020-01-10  6:45     ` Christophe Leroy
2020-01-11 11:33       ` Segher Boessenkool
2020-02-16 18:10         ` Arnd Bergmann
2020-02-19  8:45           ` Christophe Leroy
2020-02-19  9:52             ` Arnd Bergmann
2020-02-19 13:08               ` Segher Boessenkool

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