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[POWERPC] Add thread_info_cache_init() weak hook

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Some architectures need to maintain a kmem cache for thread info
structures.  The next commit adds that to powerpc to fix an alignment
problem.

There is no good arch callback to use to initialize that cache
that I can find, so this adds a new one in the form of a weak
function whose default is empty.

Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Acked-by: Andrew Morton <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>
This commit is contained in:
Benjamin Herrenschmidt 2008-04-18 16:56:15 +10:00 • committed by Paul Mackerras
commit 8c9843e57a
2 changed files with 7 additions and 0 deletions
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5
init/main.c
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@ -525,6 +525,10 @@ void __init __attribute__((weak)) smp_setup_processor_id(void)
{
}
void __init __weak thread_info_cache_init(void)
{
}
asmlinkage void __init start_kernel(void)
{
char * command_line;
@ -645,6 +649,7 @@ asmlinkage void __init start_kernel(void)
if (efi_enabled)
efi_enter_virtual_mode();
#endif
thread_info_cache_init();
fork_init(num_physpages);
proc_caches_init();
buffer_init();