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sparc64: Kill off old sys_perfctr system call and state.

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People should be using the perf events interfaces, and
the way these system call facilities used the %pcr conflicts
with the usage of the NMI watchdog and perf events.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2010-03-03 08:08:49 -08:00
parent 6c5ae5b278
commit c7d5a00507
12 changed files with 18 additions and 247 deletions
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15
arch/sparc/include/asm/system_64.h
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@ -143,15 +143,7 @@ do { \
* and 2 stores in this critical code path. -DaveM
*/
#define switch_to(prev, next, last) \
do { 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); \
} \
flush_tlb_pending(); \
do { flush_tlb_pending(); \
save_and_clear_fpu(); \
/* If you are tempted to conditionalize the following */ \
/* so that ASI is only written if it changes, think again. */ \
@ -197,11 +189,6 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \
"l1", "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)
static inline unsigned long xchg32(__volatile__ unsigned int *m, unsigned int val)