On Fri, Dec 5, 2014 at 4:32 AM, Jeff Haran <Jeff.Haran@xxxxxxxxxx> wrote:
> Disassembly of section .text:
>
> 0000000000000000 <samp_atomic_read>:
> #include <asm/atomic.h>
> #include <asm/system.h>
>
> int samp_atomic_read(atomic_t *v)
> {
> 0: 55 push rbp
> 1: 48 89 e5 mov rbp,rsp
> 4: e8 00 00 00 00 call 9 <samp_atomic_read+0x9>
> *
> * Atomically reads the value of @v.
> */
> static inline int atomic_read(const atomic_t *v)
> {
> return v->counter;
> 9: 8b 07 mov eax,DWORD PTR [rdi]
> int val;
>
> val = atomic_read(v);
> return val;
> }
> b: c9 leave
> c: c3 ret
> d: 90 nop
> e: 90 nop
> f: 90 nop
[...]
> But what is that call instruction at offset 4 for?
Looks like you have ftrace enabled in your kernel config, and this call is
a call to _mcount.
--
Thanks.
-- Max
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