Re: linux-2.0.31pre9 & SMP

Andrew Pollard (andrew@odie.demon.co.uk)
Wed, 10 Sep 1997 15:10:46 +0100

Hi Linus,

Is there any chance of the following patch being applied to the up
and coming 2.0.31? It is a rework of a patch sent a couple of months
ago to the smp list and it makes the time command return more sensible
user/system values for an SMP kernel...

[ Matthias Ohlenroth <Matthias.Ohlenroth@informatik.tu-chemnitz.de>
originally sent it, I've just made it apply to 2.0.31pre9 ]

PS. 2.0.31pre9 seems to be working rather well here (Dual PPro
system).

Cheers,
Andrew.

--
 Andrew Pollard, Auto Simulations Ltd. UK.  | home: andrew@odie.demon.co.uk
 2 Milbanke Court, Milbanke Way, Bracknell  | work: andrewp@autosim.com
Tel:+44(0)1344 426486 Fax:+44(0)1344 426615 | http://www.odie.demon.co.uk


diff -u --recursive --new-file v2.0.31pre9/linux/include/asm/irq.h linux/include/asm/irq.h
--- v2.0.31pre9/linux/include/asm/irq.h	Wed Sep 10 14:28:12 1997
+++ linux/include/asm/irq.h	Wed Sep 10 14:42:11 1997
@@ -239,6 +239,8 @@
 	"addl $8,%esp\n\t" \
 	"cli\n\t" \
 	UNBLK_##chip(mask) \
+	GET_PROCESSOR_ID \
+	"btrl $" STR(SMP_FROM_INT) ","SYMBOL_NAME_STR(smp_proc_in_lock)"(,%eax,4)\n\t" \
 	"decl "SYMBOL_NAME_STR(intr_count)"\n\t" \
 	"incl "SYMBOL_NAME_STR(syscall_count)"\n\t" \
 	"jmp ret_from_sys_call\n" \
@@ -286,6 +288,8 @@
 	"addl $8,%esp\n\t" \
 	"cli\n\t" \
 	UNBLK_##chip(mask) \
+	GET_PROCESSOR_ID \
+	"btrl $" STR(SMP_FROM_INT) ","SYMBOL_NAME_STR(smp_proc_in_lock)"(,%eax,4)\n\t" \
 	"decl "SYMBOL_NAME_STR(intr_count)"\n\t" \
 	"incl "SYMBOL_NAME_STR(syscall_count)"\n\t" \
 	"jmp ret_from_sys_call\n");
@@ -353,6 +357,8 @@
 	"call "SYMBOL_NAME_STR(smp_reschedule_irq)"\n\t" \
 	"addl $8,%esp\n\t" \
 	"cli\n\t" \
+	GET_PROCESSOR_ID \
+	"btrl $" STR(SMP_FROM_INT) ","SYMBOL_NAME_STR(smp_proc_in_lock)"(,%eax,4)\n\t" \
 	"decl "SYMBOL_NAME_STR(intr_count)"\n\t" \
 	"incl "SYMBOL_NAME_STR(syscall_count)"\n\t" \
 	"jmp ret_from_sys_call\n");