diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/lpar.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 948e0e3b354..7bc73af6c7b 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -546,6 +546,13 @@ void __trace_hcall_entry(unsigned long opcode, unsigned long *args) unsigned long flags; unsigned int *depth; + /* + * We cannot call tracepoints inside RCU idle regions which + * means we must not trace H_CEDE. + */ + if (opcode == H_CEDE) + return; + local_irq_save(flags); depth = &__get_cpu_var(hcall_trace_depth); @@ -556,8 +563,6 @@ void __trace_hcall_entry(unsigned long opcode, unsigned long *args) (*depth)++; preempt_disable(); trace_hcall_entry(opcode, args); - if (opcode == H_CEDE) - rcu_idle_enter(); (*depth)--; out: @@ -570,6 +575,9 @@ void __trace_hcall_exit(long opcode, unsigned long retval, unsigned long flags; unsigned int *depth; + if (opcode == H_CEDE) + return; + local_irq_save(flags); depth = &__get_cpu_var(hcall_trace_depth); @@ -578,8 +586,6 @@ void __trace_hcall_exit(long opcode, unsigned long retval, goto out; (*depth)++; - if (opcode == H_CEDE) - rcu_idle_exit(); trace_hcall_exit(opcode, retval, retbuf); preempt_enable(); (*depth)--; |