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-rw-r--r--arch/loongarch/kernel/mcount_dyn.S13
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/loongarch/kernel/mcount_dyn.S b/arch/loongarch/kernel/mcount_dyn.S
index bbabf06244c2..c7d961fc72c2 100644
--- a/arch/loongarch/kernel/mcount_dyn.S
+++ b/arch/loongarch/kernel/mcount_dyn.S
@@ -42,7 +42,6 @@
.if \allregs
PTR_S tp, sp, PT_R2
PTR_S t0, sp, PT_R12
- PTR_S t1, sp, PT_R13
PTR_S t2, sp, PT_R14
PTR_S t3, sp, PT_R15
PTR_S t4, sp, PT_R16
@@ -64,6 +63,8 @@
PTR_S zero, sp, PT_R0
.endif
PTR_S ra, sp, PT_ERA /* Save trace function ra at PT_ERA */
+ move t1, zero
+ PTR_S t1, sp, PT_R13
PTR_ADDI t8, sp, PT_SIZE
PTR_S t8, sp, PT_R3
.endm
@@ -104,8 +105,12 @@ ftrace_common_return:
PTR_L a7, sp, PT_R11
PTR_L fp, sp, PT_R22
PTR_L t0, sp, PT_ERA
+ PTR_L t1, sp, PT_R13
PTR_ADDI sp, sp, PT_SIZE
+ bnez t1, .Ldirect
jr t0
+.Ldirect:
+ jr t1
SYM_CODE_END(ftrace_common)
SYM_CODE_START(ftrace_caller)
@@ -147,3 +152,9 @@ SYM_CODE_START(return_to_handler)
jr ra
SYM_CODE_END(return_to_handler)
#endif
+
+#ifdef CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
+SYM_CODE_START(ftrace_stub_direct_tramp)
+ jr t0
+SYM_CODE_END(ftrace_stub_direct_tramp)
+#endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS */