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Commit 02beaccc authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
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[S390] smp: setup smp_processor_id early 



smp_processor_id() is supposed to work before setup_arch() gets called.
Before that smp_processor_id() may return just an arbitrary value that
is contained in the uninitialized boot lowcore.
So provide the arch function which will override the weak function in
init/main.c.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent a58c26bb

arch/s390/kernel/setup.c

+0 −1
Original line number Diff line number Diff line
@@ -849,7 +849,6 @@ setup_arch(char **cmdline_p) 
	setup_lowcore();



        cpu_init();

	__cpu_logical_map[0] = stap();

	s390_init_cpu_topology();



	/*

arch/s390/kernel/smp.c

+6 −0
Original line number Diff line number Diff line
@@ -717,6 +717,12 @@ void __init smp_cpus_done(unsigned int max_cpus) 
{

}



void __init smp_setup_processor_id(void)

{

	S390_lowcore.cpu_nr = 0;

	__cpu_logical_map[0] = stap();

}



/*

 * the frequency of the profiling timer can be changed

 * by writing a multiplier value into /proc/profile.