Messages in this thread Patch in this message |  | | From | Song Liu <> | Subject | [PATCH v2 bpf-next 1/5] ftrace: allow customized flags for ftrace_direct_multi ftrace_ops | Date | Thu, 2 Jun 2022 12:37:02 -0700 |
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This enables users of ftrace_direct_multi to specify the flags based on the actual use case. For example, some users may not set flag IPMODIFY.
Signed-off-by: Song Liu <song@kernel.org> --- kernel/trace/ftrace.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 2fcd17857ff6..afe782ae28d3 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -5456,8 +5456,7 @@ int modify_ftrace_direct(unsigned long ip, } EXPORT_SYMBOL_GPL(modify_ftrace_direct); -#define MULTI_FLAGS (FTRACE_OPS_FL_IPMODIFY | FTRACE_OPS_FL_DIRECT | \ - FTRACE_OPS_FL_SAVE_REGS) +#define MULTI_FLAGS (FTRACE_OPS_FL_DIRECT | FTRACE_OPS_FL_SAVE_REGS) static int check_direct_multi(struct ftrace_ops *ops) { @@ -5547,7 +5546,7 @@ int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) } ops->func = call_direct_funcs; - ops->flags = MULTI_FLAGS; + ops->flags |= MULTI_FLAGS; ops->trampoline = FTRACE_REGS_ADDR; err = register_ftrace_function(ops); -- 2.30.2
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