diff --git a/arch/tile/kernel/intvec_32.S b/arch/tile/kernel/intvec_32.S
index 33d48812872a6541f0418e63b0b378379908ccc5..9ff75e3a318ac5dc07bfa941b6ebe5c0d40b762d 100644
--- a/arch/tile/kernel/intvec_32.S
+++ b/arch/tile/kernel/intvec_32.S
@@ -572,7 +572,7 @@ intvec_\vecname:
}
wh64 r52
-#ifdef CONFIG_TRACE_IRQFLAGS
+#if defined(CONFIG_TRACE_IRQFLAGS) || defined(CONFIG_CONTEXT_TRACKING)
.ifnc \function,handle_nmi
/*
* We finally have enough state set up to notify the irq
@@ -588,6 +588,9 @@ intvec_\vecname:
{ move r32, r2; move r33, r3 }
.endif
TRACE_IRQS_OFF
+#ifdef CONFIG_CONTEXT_TRACKING
+ jal context_tracking_user_exit
+#endif
.ifnc \function,handle_syscall
{ move r0, r30; move r1, r31 }
{ move r2, r32; move r3, r33 }
diff --git a/arch/tile/kernel/intvec_64.S b/arch/tile/kernel/intvec_64.S
index 080b77269ccd6191b3a36defdaa251fee10eac7f..3b51bdf37d11f2b97efd51b162045fdb9176f265 100644
--- a/arch/tile/kernel/intvec_64.S
+++ b/arch/tile/kernel/intvec_64.S
@@ -753,7 +753,7 @@ intvec_\vecname:
}
wh64 r52
-#ifdef CONFIG_TRACE_IRQFLAGS
+#if defined(CONFIG_TRACE_IRQFLAGS) || defined(CONFIG_CONTEXT_TRACKING)
.ifnc \function,handle_nmi
/*
* We finally have enough state set up to notify the irq
@@ -769,6 +769,9 @@ intvec_\vecname:
{ move r32, r2; move r33, r3 }
.endif
TRACE_IRQS_OFF
+#ifdef CONFIG_CONTEXT_TRACKING
+ jal context_tracking_user_exit
+#endif
.ifnc \function,handle_syscall
{ move r0, r30; move r1, r31 }
{ move r2, r32; move r3, r33 }
diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
index bdc126faf7412f4b401e0fed17c694155b498a6b..54e7b723db99252ac2df797cc6f4672e6c45a77f 100644
--- a/arch/tile/kernel/ptrace.c
+++ b/arch/tile/kernel/ptrace.c
@@ -255,13 +255,6 @@ int do_syscall_trace_enter(struct pt_regs *regs)
{
u32 work = ACCESS_ONCE(current_thread_info()->flags);
- /*
- * If TIF_NOHZ is set, we are required to call user_exit() before
- * doing anything that could touch RCU.
- */
- if (work & _TIF_NOHZ)
- user_exit();
-
if (secure_computing() == -1)
return -1;
@@ -280,12 +273,6 @@ void do_syscall_trace_exit(struct pt_regs *regs)
{
long errno;
- /*
- * We may come here right after calling schedule_user()
- * in which case we can be in RCU user mode.
- */
- user_exit();
-
/*
* The standard tile calling convention returns the value (or negative
* errno) in r0, and zero (or positive errno) in r1.
@@ -322,7 +309,5 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs)
/* Handle synthetic interrupt delivered only by the simulator. */
void __kprobes do_breakpoint(struct pt_regs* regs, int fault_num)
{
- enum ctx_state prev_state = exception_enter();
send_sigtrap(current, regs);
- exception_exit(prev_state);
}
diff --git a/arch/tile/kernel/single_step.c b/arch/tile/kernel/single_step.c
index 53f7b9def07b0cbf43b4094e9d667986ad96ebc1..862973074bf91823cea501ee710811cf1b973a31 100644
--- a/arch/tile/kernel/single_step.c
+++ b/arch/tile/kernel/single_step.c
@@ -23,7 +23,6 @@
#include <linux/types.h>
#include <linux/err.h>
#include <linux/prctl.h>
-#include <linux/context_tracking.h>
#include <asm/cacheflush.h>
#include <asm/traps.h>
#include <asm/uaccess.h>
@@ -739,7 +738,6 @@ static DEFINE_PER_CPU(unsigned long, ss_saved_pc);
void gx_singlestep_handle(struct pt_regs *regs, int fault_num)
{
- enum ctx_state prev_state = exception_enter();
unsigned long *ss_pc = this_cpu_ptr(&ss_saved_pc);
struct thread_info *info = (void *)current_thread_info();
int is_single_step = test_ti_thread_flag(info, TIF_SINGLESTEP);
@@ -756,7 +754,6 @@ void gx_singlestep_handle(struct pt_regs *regs, int fault_num)
__insn_mtspr(SPR_SINGLE_STEP_CONTROL_K, control);
send_sigtrap(current, regs);
}
- exception_exit(prev_state);
}
diff --git a/arch/tile/kernel/traps.c b/arch/tile/kernel/traps.c
index 0011a9ff05259c51280b63713c70d340df558b7a..4d9651c5b1adc38983a1252aace956c92a2fb70f 100644
--- a/arch/tile/kernel/traps.c
+++ b/arch/tile/kernel/traps.c
@@ -20,7 +20,6 @@
#include <linux/reboot.h>
#include <linux/uaccess.h>
#include <linux/ptrace.h>
-#include <linux/context_tracking.h>
#include <asm/stack.h>
#include <asm/traps.h>
#include <asm/setup.h>
@@ -254,7 +253,6 @@ static int do_bpt(struct pt_regs *regs)
void __kprobes do_trap(struct pt_regs *regs, int fault_num,
unsigned long reason)
{
- enum ctx_state prev_state = exception_enter();
siginfo_t info = { 0 };
int signo, code;
unsigned long address = 0;
@@ -263,7 +261,7 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
/* Handle breakpoints, etc. */
if (is_kernel && fault_num == INT_ILL && do_bpt(regs))
- goto done;
+ return;
/* Re-enable interrupts, if they were previously enabled. */
if (!(regs->flags & PT_FLAGS_DISABLE_IRQ))
@@ -277,7 +275,7 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
const char *name;
char buf[100];
if (fixup_exception(regs)) /* ILL_TRANS or UNALIGN_DATA */
- goto done;
+ return;
if (fault_num >= 0 &&
fault_num < ARRAY_SIZE(int_name) &&
int_name[fault_num] != NULL)
@@ -319,7 +317,7 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
case INT_GPV:
#if CHIP_HAS_TILE_DMA()
if (retry_gpv(reason))
- goto done;
+ return;
#endif
/*FALLTHROUGH*/
case INT_UDN_ACCESS:
@@ -346,7 +344,7 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
if (!state ||
(void __user *)(regs->pc) != state->buffer) {
single_step_once(regs);
- goto done;
+ return;
}
}
#endif
@@ -390,9 +388,6 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
if (signo != SIGTRAP)
trace_unhandled_signal("trap", regs, address, signo);
force_sig_info(signo, &info, current);
-
-done:
- exception_exit(prev_state);
}
void do_nmi(struct pt_regs *regs, int fault_num, unsigned long reason)
diff --git a/arch/tile/kernel/unaligned.c b/arch/tile/kernel/unaligned.c
index d075f92ccee04eb5e89e7acab9b38b0558521d66..0db5f7c9d9e5c9cb58ed58080fbb997fc3cc0c2b 100644
--- a/arch/tile/kernel/unaligned.c
+++ b/arch/tile/kernel/unaligned.c
@@ -25,7 +25,6 @@
#include <linux/module.h>
#include <linux/compat.h>
#include <linux/prctl.h>
-#include <linux/context_tracking.h>
#include <asm/cacheflush.h>
#include <asm/traps.h>
#include <asm/uaccess.h>
@@ -1449,7 +1448,6 @@ void jit_bundle_gen(struct pt_regs *regs, tilegx_bundle_bits bundle,
void do_unaligned(struct pt_regs *regs, int vecnum)
{
- enum ctx_state prev_state = exception_enter();
tilegx_bundle_bits __user *pc;
tilegx_bundle_bits bundle;
struct thread_info *info = current_thread_info();
@@ -1503,7 +1501,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum)
*((tilegx_bundle_bits *)(regs->pc)));
jit_bundle_gen(regs, bundle, align_ctl);
}
- goto done;
+ return;
}
/*
@@ -1527,7 +1525,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum)
trace_unhandled_signal("unaligned fixup trap", regs, 0, SIGBUS);
force_sig_info(info.si_signo, &info, current);
- goto done;
+ return;
}
@@ -1544,7 +1542,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum)
trace_unhandled_signal("segfault in unalign fixup", regs,
(unsigned long)info.si_addr, SIGSEGV);
force_sig_info(info.si_signo, &info, current);
- goto done;
+ return;
}
if (!info->unalign_jit_base) {
@@ -1579,7 +1577,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum)
if (IS_ERR((void __force *)user_page)) {
pr_err("Out of kernel pages trying do_mmap\n");
- goto done;
+ return;
}
/* Save the address in the thread_info struct */
@@ -1592,9 +1590,6 @@ void do_unaligned(struct pt_regs *regs, int vecnum)
/* Generate unalign JIT */
jit_bundle_gen(regs, GX_INSN_BSWAP(bundle), align_ctl);
-
-done:
- exception_exit(prev_state);
}
#endif /* __tilegx__ */
diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c
index 13eac59bf16a5efbd9f67f600c4bb2cb7b4f8b74..26734214818c8860ba671c48e239b2241c9bd1f1 100644
--- a/arch/tile/mm/fault.c
+++ b/arch/tile/mm/fault.c
@@ -35,7 +35,6 @@
#include <linux/syscalls.h>
#include <linux/uaccess.h>
#include <linux/kdebug.h>
-#include <linux/context_tracking.h>
#include <asm/pgalloc.h>
#include <asm/sections.h>
@@ -845,9 +844,7 @@ static inline void __do_page_fault(struct pt_regs *regs, int fault_num,
void do_page_fault(struct pt_regs *regs, int fault_num,
unsigned long address, unsigned long write)
{
- enum ctx_state prev_state = exception_enter();
__do_page_fault(regs, fault_num, address, write);
- exception_exit(prev_state);
}
#if CHIP_HAS_TILE_DMA()