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sparc64: Implement HAVE_CONTEXT_TRACKING

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Mark the places when the system are in user or are in kernel.
This is used to make full dynticks system (tickless) --
CONFIG_NO_HZ_FULL dependence.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kirill Tkhai
2013-09-14 16:02:11 +04:00
committed by David S. Miller
parent 1a36265bf7
commit 812cb83a56
14 changed files with 137 additions and 39 deletions
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3
arch/sparc/kernel/sys_sparc_64.c
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@@ -24,6 +24,7 @@
#include <linux/personality.h>
#include <linux/random.h>
#include <linux/export.h>
#include <linux/context_tracking.h>
#include <asm/uaccess.h>
#include <asm/utrap.h>
@@ -496,6 +497,7 @@ asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs)
asmlinkage void sparc_breakpoint(struct pt_regs *regs)
{
enum ctx_state prev_state = exception_enter();
siginfo_t info;
if (test_thread_flag(TIF_32BIT)) {
@@ -514,6 +516,7 @@ asmlinkage void sparc_breakpoint(struct pt_regs *regs)
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
#endif
exception_exit(prev_state);
}
extern void check_pending(int signum);