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-rw-r--r--arch/csky/kernel/entry.S2
-rw-r--r--arch/csky/kernel/ftrace.c5
-rw-r--r--arch/csky/kernel/irq.c5
-rw-r--r--arch/csky/kernel/probes/ftrace.c9
-rw-r--r--arch/csky/kernel/probes/kprobes.c14
-rw-r--r--arch/csky/kernel/probes/kprobes_trampoline.S4
-rw-r--r--arch/csky/kernel/ptrace.c3
-rw-r--r--arch/csky/kernel/signal.c8
-rw-r--r--arch/csky/kernel/stacktrace.c5
9 files changed, 19 insertions, 36 deletions
diff --git a/arch/csky/kernel/entry.S b/arch/csky/kernel/entry.S
index 00e3c8ebf9b8..a4ababf25e24 100644
--- a/arch/csky/kernel/entry.S
+++ b/arch/csky/kernel/entry.S
@@ -249,7 +249,7 @@ ENTRY(csky_irq)
mov a0, sp
- jbsr csky_do_IRQ
+ jbsr generic_handle_arch_irq
jmpi ret_from_exception
diff --git a/arch/csky/kernel/ftrace.c b/arch/csky/kernel/ftrace.c
index b4a7ec1517ff..50bfcf129078 100644
--- a/arch/csky/kernel/ftrace.c
+++ b/arch/csky/kernel/ftrace.c
@@ -133,11 +133,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
(unsigned long)func, true, true);
return ret;
}
-
-int __init ftrace_dyn_arch_init(void)
-{
- return 0;
-}
#endif /* CONFIG_DYNAMIC_FTRACE */
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
diff --git a/arch/csky/kernel/irq.c b/arch/csky/kernel/irq.c
index 03a1930f1cbb..fcdaf3156286 100644
--- a/arch/csky/kernel/irq.c
+++ b/arch/csky/kernel/irq.c
@@ -15,8 +15,3 @@ void __init init_IRQ(void)
setup_smp_ipi();
#endif
}
-
-asmlinkage void __irq_entry csky_do_IRQ(struct pt_regs *regs)
-{
- handle_arch_irq(regs);
-}
diff --git a/arch/csky/kernel/probes/ftrace.c b/arch/csky/kernel/probes/ftrace.c
index ef2bb9bd9605..834cffcfbce3 100644
--- a/arch/csky/kernel/probes/ftrace.c
+++ b/arch/csky/kernel/probes/ftrace.c
@@ -2,13 +2,6 @@
#include <linux/kprobes.h>
-int arch_check_ftrace_location(struct kprobe *p)
-{
- if (ftrace_location((unsigned long)p->addr))
- p->flags |= KPROBE_FLAG_FTRACE;
- return 0;
-}
-
/* Ftrace callback handler for kprobes -- called under preepmt disabled */
void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
struct ftrace_ops *ops, struct ftrace_regs *fregs)
@@ -24,7 +17,6 @@ void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
return;
regs = ftrace_get_regs(fregs);
- preempt_disable_notrace();
p = get_kprobe((kprobe_opcode_t *)ip);
if (!p) {
p = get_kprobe((kprobe_opcode_t *)(ip - MCOUNT_INSN_SIZE));
@@ -64,7 +56,6 @@ void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
__this_cpu_write(current_kprobe, NULL);
}
out:
- preempt_enable_notrace();
ftrace_test_recursion_unlock(bit);
}
NOKPROBE_SYMBOL(kprobe_ftrace_handler);
diff --git a/arch/csky/kernel/probes/kprobes.c b/arch/csky/kernel/probes/kprobes.c
index 8fffa34d4e1c..42920f25e73c 100644
--- a/arch/csky/kernel/probes/kprobes.c
+++ b/arch/csky/kernel/probes/kprobes.c
@@ -1,5 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
+#define pr_fmt(fmt) "kprobes: " fmt
+
#include <linux/kprobes.h>
#include <linux/extable.h>
#include <linux/slab.h>
@@ -77,10 +79,8 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
{
unsigned long probe_addr = (unsigned long)p->addr;
- if (probe_addr & 0x1) {
- pr_warn("Address not aligned.\n");
- return -EINVAL;
- }
+ if (probe_addr & 0x1)
+ return -EILSEQ;
/* copy instruction */
p->opcode = le32_to_cpu(*p->addr);
@@ -225,7 +225,7 @@ static int __kprobes reenter_kprobe(struct kprobe *p,
break;
case KPROBE_HIT_SS:
case KPROBE_REENTER:
- pr_warn("Unrecoverable kprobe detected.\n");
+ pr_warn("Failed to recover from reentered kprobes.\n");
dump_kprobe(p);
BUG();
break;
@@ -386,7 +386,7 @@ int __init arch_populate_kprobe_blacklist(void)
void __kprobes __used *trampoline_probe_handler(struct pt_regs *regs)
{
- return (void *)kretprobe_trampoline_handler(regs, &kretprobe_trampoline, NULL);
+ return (void *)kretprobe_trampoline_handler(regs, NULL);
}
void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
@@ -394,7 +394,7 @@ void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
{
ri->ret_addr = (kprobe_opcode_t *)regs->lr;
ri->fp = NULL;
- regs->lr = (unsigned long) &kretprobe_trampoline;
+ regs->lr = (unsigned long) &__kretprobe_trampoline;
}
int __kprobes arch_trampoline_kprobe(struct kprobe *p)
diff --git a/arch/csky/kernel/probes/kprobes_trampoline.S b/arch/csky/kernel/probes/kprobes_trampoline.S
index b1fe3af24f03..ba48ad04a847 100644
--- a/arch/csky/kernel/probes/kprobes_trampoline.S
+++ b/arch/csky/kernel/probes/kprobes_trampoline.S
@@ -4,7 +4,7 @@
#include <abi/entry.h>
-ENTRY(kretprobe_trampoline)
+ENTRY(__kretprobe_trampoline)
SAVE_REGS_FTRACE
mov a0, sp /* pt_regs */
@@ -16,4 +16,4 @@ ENTRY(kretprobe_trampoline)
RESTORE_REGS_FTRACE
rts
-ENDPROC(kretprobe_trampoline)
+ENDPROC(__kretprobe_trampoline)
diff --git a/arch/csky/kernel/ptrace.c b/arch/csky/kernel/ptrace.c
index 0105ac81b432..1a5f54e0d272 100644
--- a/arch/csky/kernel/ptrace.c
+++ b/arch/csky/kernel/ptrace.c
@@ -99,7 +99,8 @@ static int gpr_set(struct task_struct *target,
if (ret)
return ret;
- regs.sr = task_pt_regs(target)->sr;
+ /* BIT(0) of regs.sr is Condition Code/Carry bit */
+ regs.sr = (regs.sr & BIT(0)) | (task_pt_regs(target)->sr & ~BIT(0));
#ifdef CONFIG_CPU_HAS_HILO
regs.dcsr = task_pt_regs(target)->dcsr;
#endif
diff --git a/arch/csky/kernel/signal.c b/arch/csky/kernel/signal.c
index 312f046d452d..c7b763d2f526 100644
--- a/arch/csky/kernel/signal.c
+++ b/arch/csky/kernel/signal.c
@@ -52,10 +52,14 @@ static long restore_sigcontext(struct pt_regs *regs,
struct sigcontext __user *sc)
{
int err = 0;
+ unsigned long sr = regs->sr;
/* sc_pt_regs is structured the same as the start of pt_regs */
err |= __copy_from_user(regs, &sc->sc_pt_regs, sizeof(struct pt_regs));
+ /* BIT(0) of regs->sr is Condition Code/Carry bit */
+ regs->sr = (sr & ~1) | (regs->sr & 1);
+
/* Restore the floating-point state. */
err |= restore_fpu_state(sc);
@@ -260,8 +264,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs,
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+ if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);
- rseq_handle_notify_resume(NULL, regs);
- }
}
diff --git a/arch/csky/kernel/stacktrace.c b/arch/csky/kernel/stacktrace.c
index 1b280ef08004..9f78f5d21511 100644
--- a/arch/csky/kernel/stacktrace.c
+++ b/arch/csky/kernel/stacktrace.c
@@ -111,12 +111,11 @@ static bool save_wchan(unsigned long pc, void *arg)
return false;
}
-unsigned long get_wchan(struct task_struct *task)
+unsigned long __get_wchan(struct task_struct *task)
{
unsigned long pc = 0;
- if (likely(task && task != current && !task_is_running(task)))
- walk_stackframe(task, NULL, save_wchan, &pc);
+ walk_stackframe(task, NULL, save_wchan, &pc);
return pc;
}
generated by cgit (git 2.34.1) at 2025-06-01 02:34:29 +0000