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authorJason Wessel <jason.wessel@windriver.com>2008-08-01 08:39:35 -0500
committerJason Wessel <jason.wessel@windriver.com>2008-08-01 08:39:35 -0500
commit25fc999913839a45cbb48ac7872e67f7521e7ed9 (patch)
tree2785851665dccc753e9e6cf0de650be72e56d7de /Documentation
parenta9b60bf4c29e07a5a2f26a6f74937972fee9b58b (diff)
kgdb: fix gdb serial thread queries
The command "info threads" did not work correctly with kgdb. It would result in a silent kernel hang if used. This patach addresses several problems. - Fix use of deprecated NR_CPUS - Fix kgdb to not walk linearly through the pid space - Correctly implement shadow pids - Change the threads per query to a #define - Fix kgdb_hex2long to work with negated values The threads 0 and -1 are reserved to represent the current task. That means that CPU 0 will start with a shadow thread id of -2, and CPU 1 will have a shadow thread id of -3, etc... From the debugger you can switch to a shadow thread to see what one of the other cpus was doing, however it is not possible to execute run control operations on any other cpu execept the cpu executing the kgdb_handle_exception(). Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
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