aboutsummaryrefslogtreecommitdiffstats
path: root/arch/alpha/kernel/process.c
diff options
context:
space:
mode:
authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-09-05 08:05:11 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-09-05 08:05:11 -0400
commit75d8f2931a803b803cb4a850448460475c20f30b (patch)
tree9853b9084fa55609c8e4abbc1763bc500e05da50 /arch/alpha/kernel/process.c
parentffb690d5aa36d38d7bed7579e3f07b84ff6b3a08 (diff)
parente93c7d1bc350189511d32cec2f0af79c30e7fa47 (diff)
Merge branch 'asoc-omap' into for-3.7
Diffstat (limited to 'arch/alpha/kernel/process.c')
-rw-r--r--arch/alpha/kernel/process.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 153d3fce3e8e..d6fde98b74b3 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -455,3 +455,22 @@ get_wchan(struct task_struct *p)
455 } 455 }
456 return pc; 456 return pc;
457} 457}
458
459int kernel_execve(const char *path, const char *const argv[], const char *const envp[])
460{
461 /* Avoid the HAE being gratuitously wrong, which would cause us
462 to do the whole turn off interrupts thing and restore it. */
463 struct pt_regs regs = {.hae = alpha_mv.hae_cache};
464 int err = do_execve(path, argv, envp, &regs);
465 if (!err) {
466 struct pt_regs *p = current_pt_regs();
467 /* copy regs to normal position and off to userland we go... */
468 *p = regs;
469 __asm__ __volatile__ (
470 "mov %0, $sp;"
471 "br $31, ret_from_sys_call"
472 : : "r"(p));
473 }
474 return err;
475}
476EXPORT_SYMBOL(kernel_execve);