[Crash-utility] timer command does not work for my ARM target

[takuo.koguchi.sw at hitachi.com]

Dave,
>----- Original Message -----
>You haven't mentioned your kernel version, but dump_timer_data_tvec_bases_v1()
>is applicable for much older kernels, certainly older than to 2.6.18.
>
>But it appears that, regardless of the kernel version, that the "timer"
>command may not work with more recent kernels that are not configured
>with CONFIG_SMP.
Though I have only vmlinux and vmcore, the crash uitlity told me that my kernel is 2.6.35.7.
Now I understand UP kernel support is not maintained very well.
When I make some progress, I will try to post patches.

Takuo
 


>
>
>----- Original Message -----
>> Dave,
>> There are a few commands that do not work for my ARM vmlinux/vmcore.
>> 
>> One of those is "timer".
>> I get the following messages;
>> 
>> crash> timer
>> timer: per_cpu_symbol_search(per_cpu__tvec_bases): NULL
>> GETBUF(128 -> 0)
>> GNU_GET_DATATYPE[tvec_root_s]: returned via gdb_error_hook (1 buffer
>> in use)
>> FREEBUF(0)
>> GETBUF(128 -> 0)
>> GNU_GET_DATATYPE[tvec_s]: returned via gdb_error_hook (1 buffer in
>> use)
>> FREEBUF(0)
>> timer: zero-size memory allocation! (called from 81191e6)
>> crash>
>> 
>> 
>> Both vec_root_size and vec_size are 0 at
>> dump_timer_data_tvec_bases_v1() in kernel.c
>> 
>> vec_root_size = (i = ARRAY_LENGTH(tvec_root_s_vec)) ?
>> i : get_array_length("tvec_root_s.vec", NULL, SIZE(list_head));
>> vec_size = (i = ARRAY_LENGTH(tvec_s_vec)) ?
>> i : get_array_length("tvec_s.vec", NULL, SIZE(list_head));
>> vec = (ulong *)GETBUF(SIZE(list_head) * MAX(vec_root_size, vec_size));
>> 
>> Do you have any suggestion?
>
>You haven't mentioned your kernel version, but dump_timer_data_tvec_bases_v1()
>is applicable for much older kernels, certainly older than to 2.6.18.
>
>But it appears that, regardless of the kernel version, that the "timer"
>command may not work with more recent kernels that are not configured
>with CONFIG_SMP.
>
>Dave
>  
>
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