diff options
Diffstat (limited to 'arch/arm/kernel/entry-common.S')
-rw-r--r-- | arch/arm/kernel/entry-common.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 06269ea375c5..159d0416f270 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S | |||
@@ -111,6 +111,7 @@ ENTRY(mcount) | |||
111 | .globl mcount_call | 111 | .globl mcount_call |
112 | mcount_call: | 112 | mcount_call: |
113 | bl ftrace_stub | 113 | bl ftrace_stub |
114 | ldr lr, [fp, #-4] @ restore lr | ||
114 | ldmia sp!, {r0-r3, pc} | 115 | ldmia sp!, {r0-r3, pc} |
115 | 116 | ||
116 | ENTRY(ftrace_caller) | 117 | ENTRY(ftrace_caller) |
@@ -122,6 +123,7 @@ ENTRY(ftrace_caller) | |||
122 | .globl ftrace_call | 123 | .globl ftrace_call |
123 | ftrace_call: | 124 | ftrace_call: |
124 | bl ftrace_stub | 125 | bl ftrace_stub |
126 | ldr lr, [fp, #-4] @ restore lr | ||
125 | ldmia sp!, {r0-r3, pc} | 127 | ldmia sp!, {r0-r3, pc} |
126 | 128 | ||
127 | #else | 129 | #else |
@@ -133,14 +135,16 @@ ENTRY(mcount) | |||
133 | adr r0, ftrace_stub | 135 | adr r0, ftrace_stub |
134 | cmp r0, r2 | 136 | cmp r0, r2 |
135 | bne trace | 137 | bne trace |
138 | ldr lr, [fp, #-4] @ restore lr | ||
136 | ldmia sp!, {r0-r3, pc} | 139 | ldmia sp!, {r0-r3, pc} |
137 | 140 | ||
138 | trace: | 141 | trace: |
139 | ldr r1, [fp, #-4] | 142 | ldr r1, [fp, #-4] @ lr of instrumented routine |
140 | mov r0, lr | 143 | mov r0, lr |
141 | sub r0, r0, #MCOUNT_INSN_SIZE | 144 | sub r0, r0, #MCOUNT_INSN_SIZE |
142 | mov lr, pc | 145 | mov lr, pc |
143 | mov pc, r2 | 146 | mov pc, r2 |
147 | mov lr, r1 @ restore lr | ||
144 | ldmia sp!, {r0-r3, pc} | 148 | ldmia sp!, {r0-r3, pc} |
145 | 149 | ||
146 | #endif /* CONFIG_DYNAMIC_FTRACE */ | 150 | #endif /* CONFIG_DYNAMIC_FTRACE */ |