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Fri, 19 Dec 2025 01:27:33 -0800 (PST) From: Jiri Olsa X-Google-Original-From: Jiri Olsa Date: Fri, 19 Dec 2025 10:27:31 +0100 To: Steven Rostedt Cc: Florent Revest , Mark Rutland , bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Menglong Dong , Song Liu Subject: Re: [PATCHv5 bpf-next 3/9] ftrace: Export some of hash related functions Message-ID: References: <20251215211402.353056-1-jolsa@kernel.org> <20251215211402.353056-4-jolsa@kernel.org> <20251217200712.606a9a7a@robin> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251217200712.606a9a7a@robin> On Wed, Dec 17, 2025 at 08:07:12PM -0500, Steven Rostedt wrote: > On Mon, 15 Dec 2025 22:13:56 +0100 > Jiri Olsa wrote: > > > index 505b7d3f5641..c0a72fcae1f6 100644 > > --- a/include/linux/ftrace.h > > +++ b/include/linux/ftrace.h > > @@ -82,6 +82,7 @@ static inline void early_trace_init(void) { } > > > > struct module; > > struct ftrace_hash; > > +struct ftrace_func_entry; > > > > #if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_MODULES) && \ > > defined(CONFIG_DYNAMIC_FTRACE) > > @@ -405,6 +406,14 @@ enum ftrace_ops_cmd { > > typedef int (*ftrace_ops_func_t)(struct ftrace_ops *op, enum ftrace_ops_cmd cmd); > > > > #ifdef CONFIG_DYNAMIC_FTRACE > > + > > +#define FTRACE_HASH_DEFAULT_BITS 10 > > + > > +struct ftrace_hash *alloc_ftrace_hash(int size_bits); > > +void free_ftrace_hash(struct ftrace_hash *hash); > > +struct ftrace_func_entry *add_hash_entry_direct(struct ftrace_hash *hash, > > As this is no longer static and is exported to other users within the > kernel, it should be renamed to: add_ftrace_hash_entry_direct() > to keep the namespace unique. ok, will change jirka > > -- Steve > > > + unsigned long ip, unsigned long direct); > > + > > /* The hash used to know what functions callbacks trace */ > > struct ftrace_ops_hash { > > struct ftrace_hash __rcu *notrace_hash;