[Crash-utility] [PATCH] Fix for the "trace.c" extension module

[Dave Anderson]

----- Original Message -----
> Fix for the "trace.c" extension module due to upstream
> changes in kernel/trace/ring_buffer.c which changes the size of
> ring_buffer_per_cpu.nr_pages field from an int to a long.
> ---
>  extensions/trace.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/extensions/trace.c b/extensions/trace.c
> index a93abdc..dfa8be9 100644
> --- a/extensions/trace.c
> +++ b/extensions/trace.c
> @@ -96,7 +96,7 @@ struct ring_buffer_per_cpu {
>  	ulong real_head_page;
>  
>  	int head_page_index;
> -	unsigned int nr_pages;
> +	unsigned long nr_pages;
>  	ulong *pages;
>  
>  	ulong *linear_pages;
> @@ -430,7 +430,13 @@ static int ftrace_init_buffers(struct
> ring_buffer_per_cpu *buffers,
>  		buffer_read_value(overrun);
>  		buffer_read_value(entries);
>  		if (per_cpu_buffer_sizes) {
> -			buffer_read_value(nr_pages);
> +			if (MEMBER_SIZE("ring_buffer_per_cpu", "nr_pages") == sizeof(unsigned int)) {
> +				unsigned int tmp_nr_pages;
> +				read_value(tmp_nr_pages, buffers[i].kaddr, ring_buffer_per_cpu, nr_pages);
> +				buffers[i].nr_pages = (unsigned long) tmp_nr_pages;
> +			} else {
> +				buffer_read_value(nr_pages);
> +			}
>  			pages = buffers[i].nr_pages;
>  		} else
>  			buffers[i].nr_pages = pages;
> --
> 1.8.3.1
> 
 
Thanks, and as I mentioned to you in the associated bugzilla, I will add the ".ring_buffer_read"
patch for big-endian ppc64.

Dave