Hi,
There is a build error of arch/m32r/kernel/smp.c in 2.6.12-mm2.
It is because that spinlock_t type was revised in the latest -mm tree.
(Re: [patch] spinlock consolidation, v2
http://www.ussg.iu.edu/hypermail/linux/kernel/0506.0/1119.html)
Here is a patch to fix the build error.
Please apply.
* arch/m32r/kernel/smp.c (send_IPI_mask_phys):
- Update for the spinlock consolidation, v2.
- Change asm portion to C code for good maintainability.
Thanks,
Signed-off-by: Hirokazu Takata <[email protected]>
---
arch/m32r/kernel/smp.c | 48 ++++++++++++------------------------------------
1 files changed, 12 insertions(+), 36 deletions(-)
Index: linux-2.6.12-mm2/arch/m32r/kernel/smp.c
===================================================================
--- linux-2.6.12-mm2.orig/arch/m32r/kernel/smp.c 2005-06-28 10:54:48.000000000 +0900
+++ linux-2.6.12-mm2/arch/m32r/kernel/smp.c 2005-06-28 12:06:33.000000000 +0900
@@ -892,7 +892,6 @@ unsigned long send_IPI_mask_phys(cpumask
int try)
{
spinlock_t *ipilock;
- unsigned long flags = 0;
volatile unsigned long *ipicr_addr;
unsigned long ipicr_val;
unsigned long my_physid_mask;
@@ -916,50 +915,27 @@ unsigned long send_IPI_mask_phys(cpumask
* write IPICRi (send IPIi)
* unlock ipi_lock[i]
*/
+ spin_lock(ipilock);
__asm__ __volatile__ (
- ";; LOCK ipi_lock[i] \n\t"
+ ";; CHECK IPICRi == 0 \n\t"
".fillinsn \n"
"1: \n\t"
- "mvfc %1, psw \n\t"
- "clrpsw #0x40 -> nop \n\t"
- DCACHE_CLEAR("r4", "r5", "%2")
- "lock r4, @%2 \n\t"
- "addi r4, #-1 \n\t"
- "unlock r4, @%2 \n\t"
- "mvtc %1, psw \n\t"
- "bnez r4, 2f \n\t"
- LOCK_SECTION_START(".balign 4 \n\t")
- ".fillinsn \n"
- "2: \n\t"
- "ld r4, @%2 \n\t"
- "blez r4, 2b \n\t"
+ "ld %0, @%1 \n\t"
+ "and %0, %4 \n\t"
+ "beqz %0, 2f \n\t"
+ "bnez %3, 3f \n\t"
"bra 1b \n\t"
- LOCK_SECTION_END
- ";; CHECK IPICRi == 0 \n\t"
- ".fillinsn \n"
- "3: \n\t"
- "ld %0, @%3 \n\t"
- "and %0, %6 \n\t"
- "beqz %0, 4f \n\t"
- "bnez %5, 5f \n\t"
- "bra 3b \n\t"
";; WRITE IPICRi (send IPIi) \n\t"
".fillinsn \n"
- "4: \n\t"
- "st %4, @%3 \n\t"
- ";; UNLOCK ipi_lock[i] \n\t"
+ "2: \n\t"
+ "st %2, @%1 \n\t"
".fillinsn \n"
- "5: \n\t"
- "ldi r4, #1 \n\t"
- "st r4, @%2 \n\t"
+ "3: \n\t"
: "=&r"(ipicr_val)
- : "r"(flags), "r"(&ipilock->slock), "r"(ipicr_addr),
- "r"(mask), "r"(try), "r"(my_physid_mask)
- : "memory", "r4"
-#ifdef CONFIG_CHIP_M32700_TS1
- , "r5"
-#endif /* CONFIG_CHIP_M32700_TS1 */
+ : "r"(ipicr_addr), "r"(mask), "r"(try), "r"(my_physid_mask)
+ : "memory"
);
+ spin_unlock(ipilock);
return ipicr_val;
}
--
Hirokazu Takata <[email protected]>
Linux/M32R Project: http://www.linux-m32r.org/
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