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Commit 47f5817a authored by David S. Miller's avatar David S. Miller
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Sparc64: Update for scheduler changes.

parent c22f5d5b
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Showing with 65 additions and 57 deletions
arch/sparc64/kernel/entry.S
View file @ 47f5817a
......@@ -1436,10 +1436,11 @@ ret_from_syscall:
* %o7 for us. Check performance counter stuff too.
*/
andn %o7, _TIF_NEWCHILD, %l0
stx %l0, [%g6 + TI_FLAGS]
#if CONFIG_SMP || CONFIG_PREEMPT
call schedule_tail
mov %g5, %o0
#endif
stx %l0, [%g6 + TI_FLAGS]
andcc %l0, _TIF_PERFCTR, %g0
be,pt %icc, 1f
nop
......
include/asm-sparc64/system.h
View file @ 47f5817a
......@@ -143,7 +143,14 @@ extern void __flushw_user(void);
#define flush_user_windows flushw_user
#define flush_register_windows flushw_all
#define prepare_to_switch flushw_all
#define prepare_arch_schedule(prev) task_lock(prev)
#define finish_arch_schedule(prev) task_unlock(prev)
#define prepare_arch_switch(rq) \
do { spin_unlock(&(rq)->lock); \
flushw_all(); \
} while (0)
#define finish_arch_switch(rq) __sti()
#ifndef CONFIG_DEBUG_SPINLOCK
#define CHECK_LOCKS(PREV) do { } while(0)
......@@ -172,61 +179,61 @@ if ((PREV)->thread.smp_lock_count) { \
* not preserve it's value. Hairy, but it lets us remove 2 loads
* and 2 stores in this critical code path. -DaveM
*/
#define switch_to(prev, next) \
do { CHECK_LOCKS(prev); \
if (test_thread_flag(TIF_PERFCTR)) { \
unsigned long __tmp; \
read_pcr(__tmp); \
current_thread_info()->pcr_reg = __tmp; \
read_pic(__tmp); \
current_thread_info()->kernel_cntd0 += (unsigned int)(__tmp); \
current_thread_info()->kernel_cntd1 += ((__tmp) >> 32); \
} \
save_and_clear_fpu(); \
/* If you are tempted to conditionalize the following */ \
/* so that ASI is only written if it changes, think again. */ \
__asm__ __volatile__("wr %%g0, %0, %%asi" \
: : "r" (__thread_flag_byte_ptr(next->thread_info)[TI_FLAG_BYTE_CURRENT_DS])); \
__asm__ __volatile__( \
"mov %%g6, %%g5\n\t" \
"wrpr %%g0, 0x95, %%pstate\n\t" \
"stx %%i6, [%%sp + 2047 + 0x70]\n\t" \
"stx %%i7, [%%sp + 2047 + 0x78]\n\t" \
"rdpr %%wstate, %%o5\n\t" \
"stx %%o6, [%%g6 + %2]\n\t" \
"stb %%o5, [%%g6 + %1]\n\t" \
"rdpr %%cwp, %%o5\n\t" \
"stb %%o5, [%%g6 + %4]\n\t" \
"mov %0, %%g6\n\t" \
"ldub [%0 + %4], %%g1\n\t" \
"wrpr %%g1, %%cwp\n\t" \
"ldx [%%g6 + %2], %%o6\n\t" \
"ldub [%%g6 + %1], %%o5\n\t" \
"ldx [%%g6 + %3], %%o7\n\t" \
"mov %%g6, %%l2\n\t" \
"wrpr %%o5, 0x0, %%wstate\n\t" \
"ldx [%%sp + 2047 + 0x70], %%i6\n\t" \
"ldx [%%sp + 2047 + 0x78], %%i7\n\t" \
"wrpr %%g0, 0x94, %%pstate\n\t" \
"mov %%l2, %%g6\n\t" \
"ldx [%%g6 + %6], %%g4\n\t" \
"wrpr %%g0, 0x96, %%pstate\n\t" \
"andcc %%o7, %5, %%g0\n\t" \
"bne,pn %%icc, ret_from_syscall\n\t" \
" nop\n\t" \
: /* no outputs */ \
: "r" (next->thread_info), \
"i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_FLAGS), "i" (TI_CWP), \
"i" (_TIF_NEWCHILD), "i" (TI_TASK) \
: "cc", "g1", "g2", "g3", "g5", "g7", \
"l2", "l3", "l4", "l5", "l6", "l7", \
"i0", "i1", "i2", "i3", "i4", "i5", \
"o0", "o1", "o2", "o3", "o4", "o5", "o7"); \
/* If you fuck with this, update ret_from_syscall code too. */ \
if (test_thread_flag(TIF_PERFCTR)) { \
write_pcr(current_thread_info()->pcr_reg); \
reset_pic(); \
} \
#define switch_to(prev, next, last) \
do { CHECK_LOCKS(prev); \
if (test_thread_flag(TIF_PERFCTR)) { \
unsigned long __tmp; \
read_pcr(__tmp); \
current_thread_info()->pcr_reg = __tmp; \
read_pic(__tmp); \
current_thread_info()->kernel_cntd0 += (unsigned int)(__tmp);\
current_thread_info()->kernel_cntd1 += ((__tmp) >> 32); \
} \
save_and_clear_fpu(); \
/* If you are tempted to conditionalize the following */ \
/* so that ASI is only written if it changes, think again. */ \
__asm__ __volatile__("wr %%g0, %0, %%asi" \
: : "r" (__thread_flag_byte_ptr(next->thread_info)[TI_FLAG_BYTE_CURRENT_DS]));\
__asm__ __volatile__( \
"mov %%g4, %%g5\n\t" \
"wrpr %%g0, 0x95, %%pstate\n\t" \
"stx %%i6, [%%sp + 2047 + 0x70]\n\t" \
"stx %%i7, [%%sp + 2047 + 0x78]\n\t" \
"rdpr %%wstate, %%o5\n\t" \
"stx %%o6, [%%g6 + %3]\n\t" \
"stb %%o5, [%%g6 + %2]\n\t" \
"rdpr %%cwp, %%o5\n\t" \
"stb %%o5, [%%g6 + %5]\n\t" \
"mov %1, %%g6\n\t" \
"ldub [%1 + %5], %%g1\n\t" \
"wrpr %%g1, %%cwp\n\t" \
"ldx [%%g6 + %3], %%o6\n\t" \
"ldub [%%g6 + %2], %%o5\n\t" \
"ldx [%%g6 + %4], %%o7\n\t" \
"mov %%g6, %%l2\n\t" \
"wrpr %%o5, 0x0, %%wstate\n\t" \
"ldx [%%sp + 2047 + 0x70], %%i6\n\t" \
"ldx [%%sp + 2047 + 0x78], %%i7\n\t" \
"wrpr %%g0, 0x94, %%pstate\n\t" \
"mov %%l2, %%g6\n\t" \
"ldx [%%g6 + %7], %%g4\n\t" \
"wrpr %%g0, 0x96, %%pstate\n\t" \
"andcc %%o7, %6, %%g0\n\t" \
"bne,pn %%icc, ret_from_syscall\n\t" \
" mov %%g5, %0\n\t" \
: "=&r" (last) \
: "0" (next->thread_info), \
"i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_FLAGS), "i" (TI_CWP), \
"i" (_TIF_NEWCHILD), "i" (TI_TASK) \
: "cc", "g1", "g2", "g3", "g5", "g7", \
"l2", "l3", "l4", "l5", "l6", "l7", \
"i0", "i1", "i2", "i3", "i4", "i5", \
"o0", "o1", "o2", "o3", "o4", "o5", "o7"); \
/* If you fuck with this, update ret_from_syscall code too. */ \
if (test_thread_flag(TIF_PERFCTR)) { \
write_pcr(current_thread_info()->pcr_reg); \
reset_pic(); \
} \
} while(0)
extern __inline__ unsigned long xchg32(__volatile__ unsigned int *m, unsigned int val)
......
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