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| author | Zheng Yejian <zhengyejian1@huawei.com> | 2022-10-25 15:39:23 +0000 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-11-23 19:08:30 -0500 |
| commit | 78a01feb4024ffb6c6321e45dc2bfcafb2d1d1e5 (patch) | |
| tree | 2b5c04974fa7653072574b9813c3b4efaedfe4fa /kernel/trace/ftrace.c | |
| parent | 4313e5a613049dfc1819a6dfb5f94cf2caff9452 (diff) | |
| download | linux-78a01feb4024ffb6c6321e45dc2bfcafb2d1d1e5.tar.bz2 | |
ftrace: Clean comments related to FTRACE_OPS_FL_PER_CPU
Commit b3a88803ac5b ("ftrace: Kill FTRACE_OPS_FL_PER_CPU") didn't
completely remove the comments related to FTRACE_OPS_FL_PER_CPU.
Link: https://lkml.kernel.org/r/20221025153923.1995973-1-zhengyejian1@huawei.com
Fixes: b3a88803ac5b ("ftrace: Kill FTRACE_OPS_FL_PER_CPU")
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 33236241f236..65a5d36463e0 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -163,7 +163,7 @@ static void ftrace_sync_ipi(void *data) static ftrace_func_t ftrace_ops_get_list_func(struct ftrace_ops *ops) { /* - * If this is a dynamic, RCU, or per CPU ops, or we force list func, + * If this is a dynamic or RCU ops, or we force list func, * then it needs to call the list anyway. */ if (ops->flags & (FTRACE_OPS_FL_DYNAMIC | FTRACE_OPS_FL_RCU) || @@ -3071,8 +3071,6 @@ out: /* * Dynamic ops may be freed, we must make sure that all * callers are done before leaving this function. - * The same goes for freeing the per_cpu data of the per_cpu - * ops. */ if (ops->flags & FTRACE_OPS_FL_DYNAMIC) { /* @@ -7519,8 +7517,6 @@ __ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip, /* * Check the following for each ops before calling their func: * if RCU flag is set, then rcu_is_watching() must be true - * if PER_CPU is set, then ftrace_function_local_disable() - * must be false * Otherwise test if the ip matches the ops filter * * If any of the above fails then the op->func() is not executed. @@ -7570,8 +7566,8 @@ NOKPROBE_SYMBOL(arch_ftrace_ops_list_func); /* * If there's only one function registered but it does not support - * recursion, needs RCU protection and/or requires per cpu handling, then - * this function will be called by the mcount trampoline. + * recursion, needs RCU protection, then this function will be called + * by the mcount trampoline. */ static void ftrace_ops_assist_func(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *op, struct ftrace_regs *fregs) |