diff options
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/Kconfig | 1 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/blackfin/kernel/ftrace-entry.S | 18 | ||||
| -rw-r--r-- | arch/blackfin/kernel/perf_event.c | 15 |
4 files changed, 8 insertions, 28 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index f81e7b989ff..ed30699cc63 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -18,7 +18,6 @@ config BLACKFIN select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER - select HAVE_FUNCTION_TRACE_MCOUNT_TEST select HAVE_IDE select HAVE_KERNEL_GZIP if RAMKERNEL select HAVE_KERNEL_BZIP2 if RAMKERNEL diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h index d0e72e9475a..7acd46653df 100644 --- a/arch/blackfin/include/asm/processor.h +++ b/arch/blackfin/include/asm/processor.h @@ -99,7 +99,7 @@ unsigned long get_wchan(struct task_struct *p); #define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) #define cpu_relax() smp_mb() - +#define cpu_relax_lowlatency() cpu_relax() /* Get the Silicon Revision of the chip */ static inline uint32_t __pure bfin_revid(void) diff --git a/arch/blackfin/kernel/ftrace-entry.S b/arch/blackfin/kernel/ftrace-entry.S index 7eed00bbd26..28d05954042 100644 --- a/arch/blackfin/kernel/ftrace-entry.S +++ b/arch/blackfin/kernel/ftrace-entry.S @@ -33,15 +33,6 @@ ENDPROC(__mcount) * function will be waiting there. mmmm pie. */ ENTRY(_ftrace_caller) -# ifdef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST - /* optional micro optimization: return if stopped */ - p1.l = _function_trace_stop; - p1.h = _function_trace_stop; - r3 = [p1]; - cc = r3 == 0; - if ! cc jump _ftrace_stub (bp); -# endif - /* save first/second/third function arg and the return register */ [--sp] = r2; [--sp] = r0; @@ -83,15 +74,6 @@ ENDPROC(_ftrace_caller) /* See documentation for _ftrace_caller */ ENTRY(__mcount) -# ifdef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST - /* optional micro optimization: return if stopped */ - p1.l = _function_trace_stop; - p1.h = _function_trace_stop; - r3 = [p1]; - cc = r3 == 0; - if ! cc jump _ftrace_stub (bp); -# endif - /* save third function arg early so we can do testing below */ [--sp] = r2; diff --git a/arch/blackfin/kernel/perf_event.c b/arch/blackfin/kernel/perf_event.c index 974e55496db..ea2032013cc 100644 --- a/arch/blackfin/kernel/perf_event.c +++ b/arch/blackfin/kernel/perf_event.c @@ -389,14 +389,6 @@ static int bfin_pmu_event_init(struct perf_event *event) if (attr->exclude_hv || attr->exclude_idle) return -EPERM; - /* - * 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; - ret = 0; switch (attr->type) { case PERF_TYPE_RAW: @@ -490,6 +482,13 @@ static int __init bfin_pmu_init(void) { int ret; + /* + * 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; + ret = perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW); if (!ret) perf_cpu_notifier(bfin_pmu_notifier); |