diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-04 20:30:22 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-04 20:30:22 +0100 |
| commit | 14c79092909a52b6fd6394b6ad5e7756c4f9565e (patch) | |
| tree | c9ab2a50aa00c8888cc90006a0e012782b0ccc19 /arch/parisc | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide (diff) | |
| parent | parisc: Change L1_CACHE_BYTES to 16 (diff) | |
| download | linux-14c79092909a52b6fd6394b6ad5e7756c4f9565e.tar.xz linux-14c79092909a52b6fd6394b6ad5e7756c4f9565e.zip | |
Merge branch 'parisc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The most important change is that we reduce L1_CACHE_BYTES to 16
bytes, for which a trivial patch for XPS in the network layer was
needed. Then we wire up the sys_membarrier and userfaultfd syscalls
and added two other small cleanups"
* 'parisc-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Change L1_CACHE_BYTES to 16
net/xps: Fix calculation of initial number of xps queues
parisc: reduce syslog debug output
parisc: serial/mux: Convert to uart_console_device instead of open-coded
parisc: Wire up userfaultfd syscall
parisc: allocate sys_membarrier system call number
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/include/asm/cache.h | 18 | ||||
| -rw-r--r-- | arch/parisc/include/uapi/asm/unistd.h | 4 | ||||
| -rw-r--r-- | arch/parisc/kernel/syscall_table.S | 2 |
3 files changed, 10 insertions, 14 deletions
diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h index 47f11c707b65..3d0e17bcc8e9 100644 --- a/arch/parisc/include/asm/cache.h +++ b/arch/parisc/include/asm/cache.h @@ -7,20 +7,12 @@ /* - * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have - * 32-byte cachelines. The default configuration is not for SMP anyway, - * so if you're building for SMP, you should select the appropriate - * processor type. There is a potential livelock danger when running - * a machine with this value set too small, but it's more probable you'll - * just ruin performance. + * PA 2.0 processors have 64 and 128-byte L2 cachelines; PA 1.1 processors + * have 32-byte cachelines. The L1 length appears to be 16 bytes but this + * is not clearly documented. */ -#ifdef CONFIG_PA20 -#define L1_CACHE_BYTES 64 -#define L1_CACHE_SHIFT 6 -#else -#define L1_CACHE_BYTES 32 -#define L1_CACHE_SHIFT 5 -#endif +#define L1_CACHE_BYTES 16 +#define L1_CACHE_SHIFT 4 #ifndef __ASSEMBLY__ diff --git a/arch/parisc/include/uapi/asm/unistd.h b/arch/parisc/include/uapi/asm/unistd.h index 2e639d7604f6..33170384d3ac 100644 --- a/arch/parisc/include/uapi/asm/unistd.h +++ b/arch/parisc/include/uapi/asm/unistd.h @@ -358,8 +358,10 @@ #define __NR_memfd_create (__NR_Linux + 340) #define __NR_bpf (__NR_Linux + 341) #define __NR_execveat (__NR_Linux + 342) +#define __NR_membarrier (__NR_Linux + 343) +#define __NR_userfaultfd (__NR_Linux + 344) -#define __NR_Linux_syscalls (__NR_execveat + 1) +#define __NR_Linux_syscalls (__NR_userfaultfd + 1) #define __IGNORE_select /* newselect */ diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index 8eefb12d1d33..78c3ef8c348d 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -438,6 +438,8 @@ ENTRY_SAME(memfd_create) /* 340 */ ENTRY_SAME(bpf) ENTRY_COMP(execveat) + ENTRY_SAME(membarrier) + ENTRY_SAME(userfaultfd) .ifne (. - 90b) - (__NR_Linux_syscalls * (91b - 90b)) |