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authorDavid S. Miller <davem@davemloft.net>2018-08-09 11:52:36 -0700
committerDavid S. Miller <davem@davemloft.net>2018-08-09 11:52:36 -0700
commita736e074680745faa5dc6be8dd3c58ad4850aab9 (patch)
tree620e6d20cfce3806399fbefa8d911cc848463f9b /arch/parisc
parent192e91d244e376b32d90ffbf78c87a0fb35a4040 (diff)
parent112cbae26d18e75098d95cc234cfa5059de8d479 (diff)
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
Overlapping changes in RXRPC, changing to ktime_get_seconds() whilst adding some tracepoints. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/Kconfig2
-rw-r--r--arch/parisc/include/asm/barrier.h32
-rw-r--r--arch/parisc/kernel/entry.S2
-rw-r--r--arch/parisc/kernel/pacache.S1
-rw-r--r--arch/parisc/kernel/syscall.S4
5 files changed, 40 insertions, 1 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 17526bebcbd2..46f656b8fc23 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -195,7 +195,7 @@ config PREFETCH
config MLONGCALLS
bool "Enable the -mlong-calls compiler option for big kernels"
- def_bool y if (!MODULES)
+ default y
depends on PA8X00
help
If you configure the kernel to include many drivers built-in instead
diff --git a/arch/parisc/include/asm/barrier.h b/arch/parisc/include/asm/barrier.h
new file mode 100644
index 000000000000..dbaaca84f27f
--- /dev/null
+++ b/arch/parisc/include/asm/barrier.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_BARRIER_H
+#define __ASM_BARRIER_H
+
+#ifndef __ASSEMBLY__
+
+/* The synchronize caches instruction executes as a nop on systems in
+ which all memory references are performed in order. */
+#define synchronize_caches() __asm__ __volatile__ ("sync" : : : "memory")
+
+#if defined(CONFIG_SMP)
+#define mb() do { synchronize_caches(); } while (0)
+#define rmb() mb()
+#define wmb() mb()
+#define dma_rmb() mb()
+#define dma_wmb() mb()
+#else
+#define mb() barrier()
+#define rmb() barrier()
+#define wmb() barrier()
+#define dma_rmb() barrier()
+#define dma_wmb() barrier()
+#endif
+
+#define __smp_mb() mb()
+#define __smp_rmb() mb()
+#define __smp_wmb() mb()
+
+#include <asm-generic/barrier.h>
+
+#endif /* !__ASSEMBLY__ */
+#endif /* __ASM_BARRIER_H */
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index e95207c0565e..1b4732e20137 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -482,6 +482,8 @@
.macro tlb_unlock0 spc,tmp
#ifdef CONFIG_SMP
or,COND(=) %r0,\spc,%r0
+ sync
+ or,COND(=) %r0,\spc,%r0
stw \spc,0(\tmp)
#endif
.endm
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 22e6374ece44..97451e67d35b 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -353,6 +353,7 @@ ENDPROC_CFI(flush_data_cache_local)
.macro tlb_unlock la,flags,tmp
#ifdef CONFIG_SMP
ldi 1,\tmp
+ sync
stw \tmp,0(\la)
mtsm \flags
#endif
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index e775f80ae28c..4886a6db42e9 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -633,6 +633,7 @@ cas_action:
sub,<> %r28, %r25, %r0
2: stw,ma %r24, 0(%r26)
/* Free lock */
+ sync
stw,ma %r20, 0(%sr2,%r20)
#if ENABLE_LWS_DEBUG
/* Clear thread register indicator */
@@ -647,6 +648,7 @@ cas_action:
3:
/* Error occurred on load or store */
/* Free lock */
+ sync
stw %r20, 0(%sr2,%r20)
#if ENABLE_LWS_DEBUG
stw %r0, 4(%sr2,%r20)
@@ -848,6 +850,7 @@ cas2_action:
cas2_end:
/* Free lock */
+ sync
stw,ma %r20, 0(%sr2,%r20)
/* Enable interrupts */
ssm PSW_SM_I, %r0
@@ -858,6 +861,7 @@ cas2_end:
22:
/* Error occurred on load or store */
/* Free lock */
+ sync
stw %r20, 0(%sr2,%r20)
ssm PSW_SM_I, %r0
ldo 1(%r0),%r28