Hi,
I have a bad experience with MIPS 64 Bit Architecture on Kernel 3.8.
The Kernel doesn't boot when enabling CONFIG_FUNCTION_TRACER,
it hangs at early startup directly after u-boot init:
..
## Loading Linux kernel with entry point: 0x805e23c0 ...
Bootloader: Done loading app on coremask
On Thu, 2013-01-17 at 09:58 -0500, Alan Cooper wrote:
> When the kernel first boots we have to be able to handle the gcc
> generated jalr, addui sequence until ftrace_init gets a chance to run
> and change the sequence. At this point mcount just adjusts the stack
> and returns. When ftrace_init run
When the kernel first boots we have to be able to handle the gcc
generated jalr, addui sequence until ftrace_init gets a chance to run
and change the sequence. At this point mcount just adjusts the stack
and returns. When ftrace_init runs, we convert the jalr/addui to nops.
Then whenever tracing is
On Thu, Jan 17, 2013 at 12:43 AM, Al Cooper wrote:
> Part of the sequence is "addiu sp,sp,-8" in the delay slot after every
> call to the trace routine "_mcount" (some legacy thing where 2 arguments
> used to be pushed on the stack). The _mcount routine is expected to
> adjust the sp by +8 before
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