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author | Ingo Molnar <mingo@elte.hu> | 2012-02-07 08:59:29 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2012-02-07 08:59:29 (GMT) |
commit | 290436c9c61ac983b1bd425da67242a4357c7701 (patch) | |
tree | 35e1f189b62eb50515600ad607d7fb57fc547870 /arch/arm/kernel/entry-common.S | |
parent | 623ec991ce0e8cd5791bad656c162fa837635907 (diff) | |
parent | 62aa2b537c6f5957afd98e29f96897419ed5ebab (diff) | |
download | linux-fsl-qoriq-290436c9c61ac983b1bd425da67242a4357c7701.tar.xz |
Merge tag 'v3.3-rc2' into perf/core
Linux 3.3-rc2
Pick up the latest fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/kernel/entry-common.S')
-rw-r--r-- | arch/arm/kernel/entry-common.S | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 520889c..9fd0ba9 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -149,6 +149,11 @@ ENDPROC(ret_from_fork) #endif #endif +.macro mcount_adjust_addr rd, rn + bic \rd, \rn, #1 @ clear the Thumb bit if present + sub \rd, \rd, #MCOUNT_INSN_SIZE +.endm + .macro __mcount suffix mcount_enter ldr r0, =ftrace_trace_function @@ -173,8 +178,7 @@ ENDPROC(ret_from_fork) mcount_exit 1: mcount_get_lr r1 @ lr of instrumented func - mov r0, lr @ instrumented function - sub r0, r0, #MCOUNT_INSN_SIZE + mcount_adjust_addr r0, lr @ instrumented function adr lr, BSYM(2f) mov pc, r2 2: mcount_exit @@ -184,8 +188,7 @@ ENDPROC(ret_from_fork) mcount_enter mcount_get_lr r1 @ lr of instrumented func - mov r0, lr @ instrumented function - sub r0, r0, #MCOUNT_INSN_SIZE + mcount_adjust_addr r0, lr @ instrumented function .globl ftrace_call\suffix ftrace_call\suffix: @@ -205,11 +208,11 @@ ftrace_graph_call\suffix: #ifdef CONFIG_DYNAMIC_FTRACE @ called from __ftrace_caller, saved in mcount_enter ldr r1, [sp, #16] @ instrumented routine (func) + mcount_adjust_addr r1, r1 #else @ called from __mcount, untouched in lr - mov r1, lr @ instrumented routine (func) + mcount_adjust_addr r1, lr @ instrumented routine (func) #endif - sub r1, r1, #MCOUNT_INSN_SIZE mov r2, fp @ frame pointer bl prepare_ftrace_return mcount_exit |