diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/Kconfig | 9 | ||||
| -rw-r--r-- | kernel/trace/fgraph.c | 4 | ||||
| -rw-r--r-- | kernel/trace/ftrace.c | 2 | ||||
| -rw-r--r-- | kernel/trace/ftrace_internal.h | 8 | ||||
| -rw-r--r-- | kernel/trace/ring_buffer_benchmark.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace.c | 4 | ||||
| -rw-r--r-- | kernel/trace/trace_events.c | 4 | ||||
| -rw-r--r-- | kernel/trace/trace_sched_wakeup.c | 3 |
8 files changed, 18 insertions, 18 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 98da8998c25c..e08527f50d2a 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -146,7 +146,7 @@ config FUNCTION_TRACER select GENERIC_TRACER select CONTEXT_SWITCH_TRACER select GLOB - select TASKS_RCU if PREEMPT + select TASKS_RCU if PREEMPTION help Enable the kernel to trace every kernel function. This is done by using a compiler feature to insert a small, 5-byte No-Operation @@ -179,7 +179,7 @@ config TRACE_PREEMPT_TOGGLE config PREEMPTIRQ_EVENTS bool "Enable trace events for preempt and irq disable/enable" select TRACE_IRQFLAGS - select TRACE_PREEMPT_TOGGLE if PREEMPT + select TRACE_PREEMPT_TOGGLE if PREEMPTION select GENERIC_TRACER default n help @@ -214,7 +214,7 @@ config PREEMPT_TRACER bool "Preemption-off Latency Tracer" default n depends on !ARCH_USES_GETTIMEOFFSET - depends on PREEMPT + depends on PREEMPTION select GENERIC_TRACER select TRACER_MAX_TRACE select RING_BUFFER_ALLOW_SWAP @@ -520,7 +520,8 @@ config BPF_EVENTS bool default y help - This allows the user to attach BPF programs to kprobe events. + This allows the user to attach BPF programs to kprobe, uprobe, and + tracepoint events. config DYNAMIC_EVENTS def_bool n diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c index 8dfd5021b933..7950a0356042 100644 --- a/kernel/trace/fgraph.c +++ b/kernel/trace/fgraph.c @@ -276,7 +276,7 @@ unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx, int index = task->curr_ret_stack; int i; - if (ret != (unsigned long)return_to_handler) + if (ret != (unsigned long)dereference_kernel_function_descriptor(return_to_handler)) return ret; if (index < 0) @@ -294,7 +294,7 @@ unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx, { int task_idx; - if (ret != (unsigned long)return_to_handler) + if (ret != (unsigned long)dereference_kernel_function_descriptor(return_to_handler)) return ret; task_idx = task->curr_ret_stack; diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index c4cc048eb594..62a50bf399d6 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2814,7 +2814,7 @@ int ftrace_shutdown(struct ftrace_ops *ops, int command) * synchornize_rcu_tasks() will wait for those tasks to * execute and either schedule voluntarily or enter user space. */ - if (IS_ENABLED(CONFIG_PREEMPT)) + if (IS_ENABLED(CONFIG_PREEMPTION)) synchronize_rcu_tasks(); free_ops: diff --git a/kernel/trace/ftrace_internal.h b/kernel/trace/ftrace_internal.h index 0515a2096f90..0456e0a3dab1 100644 --- a/kernel/trace/ftrace_internal.h +++ b/kernel/trace/ftrace_internal.h @@ -6,22 +6,22 @@ /* * Traverse the ftrace_global_list, invoking all entries. The reason that we - * can use rcu_dereference_raw_notrace() is that elements removed from this list + * can use rcu_dereference_raw_check() is that elements removed from this list * are simply leaked, so there is no need to interact with a grace-period - * mechanism. The rcu_dereference_raw_notrace() calls are needed to handle + * mechanism. The rcu_dereference_raw_check() calls are needed to handle * concurrent insertions into the ftrace_global_list. * * Silly Alpha and silly pointer-speculation compiler optimizations! */ #define do_for_each_ftrace_op(op, list) \ - op = rcu_dereference_raw_notrace(list); \ + op = rcu_dereference_raw_check(list); \ do /* * Optimized for just a single item in the list (as that is the normal case). */ #define while_for_each_ftrace_op(op) \ - while (likely(op = rcu_dereference_raw_notrace((op)->next)) && \ + while (likely(op = rcu_dereference_raw_check((op)->next)) && \ unlikely((op) != &ftrace_list_end)) extern struct ftrace_ops __rcu *ftrace_ops_list; diff --git a/kernel/trace/ring_buffer_benchmark.c b/kernel/trace/ring_buffer_benchmark.c index 0564f6db0561..09b0b49f346e 100644 --- a/kernel/trace/ring_buffer_benchmark.c +++ b/kernel/trace/ring_buffer_benchmark.c @@ -267,7 +267,7 @@ static void ring_buffer_producer(void) if (consumer && !(cnt % wakeup_interval)) wake_up_process(consumer); -#ifndef CONFIG_PREEMPT +#ifndef CONFIG_PREEMPTION /* * If we are a non preempt kernel, the 10 second run will * stop everything while it runs. Instead, we will call diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index e917aa783675..252f79c435f8 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2642,10 +2642,10 @@ static void ftrace_exports(struct ring_buffer_event *event) preempt_disable_notrace(); - export = rcu_dereference_raw_notrace(ftrace_exports_list); + export = rcu_dereference_raw_check(ftrace_exports_list); while (export) { trace_process_export(export, event); - export = rcu_dereference_raw_notrace(export->next); + export = rcu_dereference_raw_check(export->next); } preempt_enable_notrace(); diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 648930823b57..b89cdfe20bc1 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -255,12 +255,12 @@ void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer, local_save_flags(fbuffer->flags); fbuffer->pc = preempt_count(); /* - * If CONFIG_PREEMPT is enabled, then the tracepoint itself disables + * If CONFIG_PREEMPTION is enabled, then the tracepoint itself disables * preemption (adding one to the preempt_count). Since we are * interested in the preempt_count at the time the tracepoint was * hit, we need to subtract one to offset the increment. */ - if (IS_ENABLED(CONFIG_PREEMPT)) + if (IS_ENABLED(CONFIG_PREEMPTION)) fbuffer->pc--; fbuffer->trace_file = trace_file; diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c index 743b2b520d34..5e43b9664eca 100644 --- a/kernel/trace/trace_sched_wakeup.c +++ b/kernel/trace/trace_sched_wakeup.c @@ -579,8 +579,7 @@ probe_wakeup(void *ignore, struct task_struct *p) else tracing_dl = 0; - wakeup_task = p; - get_task_struct(wakeup_task); + wakeup_task = get_task_struct(p); local_save_flags(flags); |