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Commit e91948fd authored by Stephen Rothwell's avatar Stephen Rothwell Committed by Paul Mackerras
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[POWERPC] Minor paca optimisation 



Move the slb_shadow_ptr field into the first cache line since it is
(like everything there) read-only after boot.  It is in fact statically
initialised and thereafter only read.

Signed-off-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Acked-by: default avatarMichael Neuling <mikey@neuling.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 0e680673

include/asm-powerpc/paca.h

+1 −2
Original line number Diff line number Diff line
@@ -70,6 +70,7 @@ struct paca_struct { 
	s16 hw_cpu_id;			/* Physical processor number */

	u8 cpu_start;			/* At startup, processor spins until */

					/* this becomes non-zero. */

	struct slb_shadow *slb_shadow_ptr;



	/*

	 * Now, starting in cacheline 2, the exception save areas
@@ -101,8 +102,6 @@ struct paca_struct { 
	u64 user_time;			/* accumulated usermode TB ticks */

	u64 system_time;		/* accumulated system TB ticks */

	u64 startpurr;			/* PURR/TB value snapshot */



	struct slb_shadow *slb_shadow_ptr;

};



extern struct paca_struct paca[];