diff options
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/Kconfig | 1 | ||||
| -rw-r--r-- | arch/sh/include/asm/processor.h | 1 | ||||
| -rw-r--r-- | arch/sh/kernel/ftrace.c | 3 | ||||
| -rw-r--r-- | arch/sh/kernel/perf_event.c | 15 | ||||
| -rw-r--r-- | arch/sh/lib/mcount.S | 24 |
5 files changed, 13 insertions, 31 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 834b67c..aa2df3e 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -57,7 +57,6 @@ config SUPERH32 select HAVE_FUNCTION_TRACER select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE - select HAVE_FUNCTION_TRACE_MCOUNT_TEST select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE select ARCH_WANT_IPC_PARSE_VERSION select HAVE_FUNCTION_GRAPH_TRACER diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h index 5448f9b..1506897 100644 --- a/arch/sh/include/asm/processor.h +++ b/arch/sh/include/asm/processor.h @@ -97,6 +97,7 @@ extern struct sh_cpuinfo cpu_data[]; #define cpu_sleep() __asm__ __volatile__ ("sleep" : : : "memory") #define cpu_relax() barrier() +#define cpu_relax_lowlatency() cpu_relax() void default_idle(void); void stop_this_cpu(void *); diff --git a/arch/sh/kernel/ftrace.c b/arch/sh/kernel/ftrace.c index 3c74f53..079d70e 100644 --- a/arch/sh/kernel/ftrace.c +++ b/arch/sh/kernel/ftrace.c @@ -344,6 +344,9 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr) struct ftrace_graph_ent trace; unsigned long return_hooker = (unsigned long)&return_to_handler; + if (unlikely(ftrace_graph_is_dead())) + return; + if (unlikely(atomic_read(¤t->tracing_graph_pause))) return; diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c index 0233167..7cfd7f1 100644 --- a/arch/sh/kernel/perf_event.c +++ b/arch/sh/kernel/perf_event.c @@ -129,14 +129,6 @@ static int __hw_perf_event_init(struct perf_event *event) return -ENODEV; /* - * All of the on-chip counters are "limited", in that they have - * no interrupts, and are therefore unable to do sampling without - * further work and timer assistance. - */ - if (hwc->sample_period) - return -EINVAL; - - /* * See if we need to reserve the counter. * * If no events are currently in use, then we have to take a @@ -392,6 +384,13 @@ int register_sh_pmu(struct sh_pmu *_pmu) pr_info("Performance Events: %s support registered\n", _pmu->name); + /* + * All of the on-chip counters are "limited", in that they have + * no interrupts, and are therefore unable to do sampling without + * further work and timer assistance. + */ + pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT; + WARN_ON(_pmu->num_events > MAX_HWEVENTS); perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW); diff --git a/arch/sh/lib/mcount.S b/arch/sh/lib/mcount.S index 52aa201..7a8572f 100644 --- a/arch/sh/lib/mcount.S +++ b/arch/sh/lib/mcount.S @@ -92,13 +92,6 @@ mcount: rts nop #else -#ifndef CONFIG_DYNAMIC_FTRACE - mov.l .Lfunction_trace_stop, r0 - mov.l @r0, r0 - tst r0, r0 - bf ftrace_stub -#endif - MCOUNT_ENTER() #ifdef CONFIG_DYNAMIC_FTRACE @@ -174,11 +167,6 @@ ftrace_graph_call: .globl ftrace_caller ftrace_caller: - mov.l .Lfunction_trace_stop, r0 - mov.l @r0, r0 - tst r0, r0 - bf ftrace_stub - MCOUNT_ENTER() .globl ftrace_call @@ -196,8 +184,6 @@ ftrace_call: #endif /* CONFIG_DYNAMIC_FTRACE */ .align 2 -.Lfunction_trace_stop: - .long function_trace_stop /* * NOTE: From here on the locations of the .Lftrace_stub label and @@ -217,12 +203,7 @@ ftrace_stub: #ifdef CONFIG_FUNCTION_GRAPH_TRACER .globl ftrace_graph_caller ftrace_graph_caller: - mov.l 2f, r0 - mov.l @r0, r0 - tst r0, r0 - bt 1f - - mov.l 3f, r1 + mov.l 2f, r1 jmp @r1 nop 1: @@ -242,8 +223,7 @@ ftrace_graph_caller: MCOUNT_LEAVE() .align 2 -2: .long function_trace_stop -3: .long skip_trace +2: .long skip_trace .Lprepare_ftrace_return: .long prepare_ftrace_return |
