Displaying 7 results from an estimated 7 matches for "92cc2f223cb3".
2020 Jul 13
1
[PATCH v3 02/19] compiler.h: Split {READ, WRITE}_ONCE definitions out into rwonce.h
..._ASSEMBLY__
>
> -#include <linux/compiler.h>
> +#include <asm/rwonce.h>
>
> #ifndef nop
> #define nop() asm volatile ("nop")
> diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
> new file mode 100644
> index 000000000000..92cc2f223cb3
> --- /dev/null
> +++ b/include/asm-generic/rwonce.h
> @@ -0,0 +1,91 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Prevent the compiler from merging or refetching reads or writes. The
> + * compiler is also forbidden from reordering successive instances of
> + * R...
2020 Jul 10
0
[PATCH v3 03/19] asm/rwonce: Allow __READ_ONCE to be overridden by the architecture
...emory
barriers are also required.
Acked-by: Paul E. McKenney <paulmck at kernel.org>
Signed-off-by: Will Deacon <will at kernel.org>
---
include/asm-generic/rwonce.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
index 92cc2f223cb3..f9dfa88fc04d 100644
--- a/include/asm-generic/rwonce.h
+++ b/include/asm-generic/rwonce.h
@@ -33,7 +33,9 @@
* atomicity or dependency ordering guarantees. Note that this may result
* in tears!
*/
+#ifndef __READ_ONCE
#define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&...
2020 Jun 30
0
[PATCH 02/18] compiler.h: Split {READ, WRITE}_ONCE definitions out into rwonce.h
...ci.h
mandatory-y += percpu.h
mandatory-y += pgalloc.h
mandatory-y += preempt.h
+mandatory-y += rwonce.h
mandatory-y += sections.h
mandatory-y += serial.h
mandatory-y += shmparam.h
diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
new file mode 100644
index 000000000000..92cc2f223cb3
--- /dev/null
+++ b/include/asm-generic/rwonce.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Prevent the compiler from merging or refetching reads or writes. The
+ * compiler is also forbidden from reordering successive instances of
+ * READ_ONCE and WRITE_ONCE, but only when t...
2020 Jul 10
0
[PATCH v3 02/19] compiler.h: Split {READ, WRITE}_ONCE definitions out into rwonce.h
...eric/barrier.h
@@ -13,7 +13,7 @@
#ifndef __ASSEMBLY__
-#include <linux/compiler.h>
+#include <asm/rwonce.h>
#ifndef nop
#define nop() asm volatile ("nop")
diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
new file mode 100644
index 000000000000..92cc2f223cb3
--- /dev/null
+++ b/include/asm-generic/rwonce.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Prevent the compiler from merging or refetching reads or writes. The
+ * compiler is also forbidden from reordering successive instances of
+ * READ_ONCE and WRITE_ONCE, but only when t...
2020 Jul 10
24
[PATCH 00/18] Allow architectures to override __READ_ONCE()
Hi all,
This is version three of the patches I previously posted here:
v1: https://lore.kernel.org/lkml/20191108170120.22331-1-will at kernel.org/
v2: https://lore.kernel.org/r/20200630173734.14057-1-will at kernel.org
Changes since v2 include:
* Actually add the barrier in READ_ONCE() for Alpha!
* Implement Alpha's smp_load_acquire() using __READ_ONCE(), rather than
the other
2020 Jun 30
32
[PATCH 00/18] Allow architectures to override __READ_ONCE()
Hi everyone,
This is the long-awaited version two of the patches I previously
posted in November last year:
https://lore.kernel.org/lkml/20191108170120.22331-1-will at kernel.org/
I ended up parking the series while the READ_ONCE() implementation was
being overhauled, but with that merged during the recent merge window
and LTO patches being posted again [1], it was time for a refresh.
The
2020 Jun 30
32
[PATCH 00/18] Allow architectures to override __READ_ONCE()
Hi everyone,
This is the long-awaited version two of the patches I previously
posted in November last year:
https://lore.kernel.org/lkml/20191108170120.22331-1-will at kernel.org/
I ended up parking the series while the READ_ONCE() implementation was
being overhauled, but with that merged during the recent merge window
and LTO patches being posted again [1], it was time for a refresh.
The