sparc64: Kill off old sys_perfctr system call and state.
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:
@@ -352,12 +352,6 @@ void exit_thread(void)
|
||||
else
|
||||
t->utraps[0]--;
|
||||
}
|
||||
|
||||
if (test_and_clear_thread_flag(TIF_PERFCTR)) {
|
||||
t->user_cntd0 = t->user_cntd1 = NULL;
|
||||
t->pcr_reg = 0;
|
||||
write_pcr(0);
|
||||
}
|
||||
}
|
||||
|
||||
void flush_thread(void)
|
||||
@@ -371,13 +365,6 @@ void flush_thread(void)
|
||||
|
||||
set_thread_wsaved(0);
|
||||
|
||||
/* Turn off performance counters if on. */
|
||||
if (test_and_clear_thread_flag(TIF_PERFCTR)) {
|
||||
t->user_cntd0 = t->user_cntd1 = NULL;
|
||||
t->pcr_reg = 0;
|
||||
write_pcr(0);
|
||||
}
|
||||
|
||||
/* Clear FPU register state. */
|
||||
t->fpsaved[0] = 0;
|
||||
|
||||
@@ -591,16 +578,6 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
|
||||
t->kregs->u_regs[UREG_FP] =
|
||||
((unsigned long) child_sf) - STACK_BIAS;
|
||||
|
||||
/* Special case, if we are spawning a kernel thread from
|
||||
* a userspace task (usermode helper, NFS or similar), we
|
||||
* must disable performance counters in the child because
|
||||
* the address space and protection realm are changing.
|
||||
*/
|
||||
if (t->flags & _TIF_PERFCTR) {
|
||||
t->user_cntd0 = t->user_cntd1 = NULL;
|
||||
t->pcr_reg = 0;
|
||||
t->flags &= ~_TIF_PERFCTR;
|
||||
}
|
||||
t->flags |= ((long)ASI_P << TI_FLAG_CURRENT_DS_SHIFT);
|
||||
t->kregs->u_regs[UREG_G6] = (unsigned long) t;
|
||||
t->kregs->u_regs[UREG_G4] = (unsigned long) t->task;
|
||||
|
Reference in New Issue
Block a user