Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9733DC6FD1F for ; Thu, 16 Mar 2023 17:39:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230080AbjCPRjB (ORCPT ); Thu, 16 Mar 2023 13:39:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229999AbjCPRis (ORCPT ); Thu, 16 Mar 2023 13:38:48 -0400 Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6EA48D30B7 for ; Thu, 16 Mar 2023 10:38:42 -0700 (PDT) Received: by mail-wm1-x32e.google.com with SMTP id p23-20020a05600c1d9700b003ead4835046so3806355wms.0 for ; Thu, 16 Mar 2023 10:38:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1678988320; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=eL/stMoP0oV7dlPY6xNAeWk9gf00tw0yFLNPu+2e0kM=; b=W7ptpNKVJ58+w8humH94xSbxsJFt5NStTxd54l5s/e6/9va8hr/iQziM9rYjgGL48x D1Tuh/Cl3gf9DCShRr++CGZWTkcLRLp0w+a3UbmSZY0SFnJ3Qus6ZhY8Xrf8jLh+v/dN usdQX2HUrbSd0pgTR4gClblNiF2fgrGfCGTsg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678988320; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=eL/stMoP0oV7dlPY6xNAeWk9gf00tw0yFLNPu+2e0kM=; b=g/+9igXWJIIB9AgBsUf93e/nf+2ZyydLwk7cq1L6r2nKzWOVTNI5J/2z47/ey9TBdZ PArSSpXljWIKGcedBjMSXQB8f61rf9fX9TUkFZ0T1Xl08qUOGs7D8NWI8bTfsYavKjl/ mHWaDvuNhOOQP67ZuX3MedZmVjfffD7qaDJDgn+yfZZZduRvOCPIR4QJoLja9qtF1LxL +4VYHGRe29Tvh+9ES+pxvl/DVxgxlq5N8izx1wrDtsvc9k2ySUM3esSbPITUSTCCF3KB IFUIFODUt3e1NP6FPZwFOzoUGbYvHbyTOKXip2g9A2kc6/EebQteSuvu1ylGZ/+IfY0C JHFg== X-Gm-Message-State: AO0yUKU3AfV+/IhAHPYm6+dQkCT4v5VPYSFcdQ3Wc8nD88FStJYDuRs3 GJK8PqXekZXUHBryKKEuKNWfa97jQ9VYk1GpFAU= X-Google-Smtp-Source: AK7set/dyYckEaNyBBMd5iruKeFLd2YG6xsOfvdmxIt4E2+3mYsXZkBSTLyb3t8lwA/VCuKfFMOApA== X-Received: by 2002:a05:600c:4ecf:b0:3eb:29fe:70ec with SMTP id g15-20020a05600c4ecf00b003eb29fe70ecmr24332066wmq.27.1678988320372; Thu, 16 Mar 2023 10:38:40 -0700 (PDT) Received: from revest.zrh.corp.google.com ([2a00:79e0:9d:6:24ff:9ff7:736e:20a6]) by smtp.gmail.com with ESMTPSA id t14-20020a1c770e000000b003daf7721bb3sm5596436wmi.12.2023.03.16.10.38.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Mar 2023 10:38:40 -0700 (PDT) From: Florent Revest To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: rostedt@goodmis.org, mhiramat@kernel.org, mark.rutland@arm.com, ast@kernel.org, daniel@iogearbox.net, kpsingh@kernel.org, revest@chromium.org, jolsa@kernel.org Subject: [PATCH 4/7] ftrace: Rename _ftrace_direct_multi APIs to _ftrace_direct APIs Date: Thu, 16 Mar 2023 18:38:08 +0100 Message-Id: <20230316173811.1223508-5-revest@chromium.org> X-Mailer: git-send-email 2.40.0.rc2.332.ga46443480c-goog In-Reply-To: <20230316173811.1223508-1-revest@chromium.org> References: <20230316173811.1223508-1-revest@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that the original _ftrace_direct APIs are gone, the "_multi" suffixes only add confusion. Signed-off-by: Florent Revest Acked-by: Mark Rutland Tested-by: Mark Rutland --- include/linux/ftrace.h | 20 ++++++------ kernel/bpf/trampoline.c | 12 ++++---- kernel/trace/ftrace.c | 34 ++++++++++----------- kernel/trace/trace_selftest.c | 9 +++--- samples/Kconfig | 2 +- samples/ftrace/ftrace-direct-modify.c | 8 ++--- samples/ftrace/ftrace-direct-multi-modify.c | 8 ++--- samples/ftrace/ftrace-direct-multi.c | 4 +-- samples/ftrace/ftrace-direct-too.c | 6 ++-- samples/ftrace/ftrace-direct.c | 6 ++-- 10 files changed, 55 insertions(+), 54 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 2f400c9f0787..abee60865fc7 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -398,11 +398,11 @@ struct ftrace_func_entry { #ifdef CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS extern int ftrace_direct_func_count; unsigned long ftrace_find_rec_direct(unsigned long ip); -int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr); -int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr, - bool free_filters); -int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr); -int modify_ftrace_direct_multi_nolock(struct ftrace_ops *ops, unsigned long addr); +int register_ftrace_direct(struct ftrace_ops *ops, unsigned long addr); +int unregister_ftrace_direct(struct ftrace_ops *ops, unsigned long addr, + bool free_filters); +int modify_ftrace_direct(struct ftrace_ops *ops, unsigned long addr); +int modify_ftrace_direct_nolock(struct ftrace_ops *ops, unsigned long addr); #else struct ftrace_ops; @@ -411,20 +411,20 @@ static inline unsigned long ftrace_find_rec_direct(unsigned long ip) { return 0; } -static inline int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) +static inline int register_ftrace_direct(struct ftrace_ops *ops, unsigned long addr) { return -ENODEV; } -static inline int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr, - bool free_filters) +static inline int unregister_ftrace_direct(struct ftrace_ops *ops, unsigned long addr, + bool free_filters) { return -ENODEV; } -static inline int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) +static inline int modify_ftrace_direct(struct ftrace_ops *ops, unsigned long addr) { return -ENODEV; } -static inline int modify_ftrace_direct_multi_nolock(struct ftrace_ops *ops, unsigned long addr) +static inline int modify_ftrace_direct_nolock(struct ftrace_ops *ops, unsigned long addr) { return -ENODEV; } diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c index 88bc23f1e10a..a14d0af534b3 100644 --- a/kernel/bpf/trampoline.c +++ b/kernel/bpf/trampoline.c @@ -45,8 +45,8 @@ static int bpf_tramp_ftrace_ops_func(struct ftrace_ops *ops, enum ftrace_ops_cmd lockdep_assert_held_once(&tr->mutex); /* Instead of updating the trampoline here, we propagate - * -EAGAIN to register_ftrace_direct_multi(). Then we can - * retry register_ftrace_direct_multi() after updating the + * -EAGAIN to register_ftrace_direct(). Then we can + * retry register_ftrace_direct() after updating the * trampoline. */ if ((tr->flags & BPF_TRAMP_F_CALL_ORIG) && @@ -198,7 +198,7 @@ static int unregister_fentry(struct bpf_trampoline *tr, void *old_addr) int ret; if (tr->func.ftrace_managed) - ret = unregister_ftrace_direct_multi(tr->fops, (long)old_addr, false); + ret = unregister_ftrace_direct(tr->fops, (long)old_addr, false); else ret = bpf_arch_text_poke(ip, BPF_MOD_CALL, old_addr, NULL); @@ -215,9 +215,9 @@ static int modify_fentry(struct bpf_trampoline *tr, void *old_addr, void *new_ad if (tr->func.ftrace_managed) { if (lock_direct_mutex) - ret = modify_ftrace_direct_multi(tr->fops, (long)new_addr); + ret = modify_ftrace_direct(tr->fops, (long)new_addr); else - ret = modify_ftrace_direct_multi_nolock(tr->fops, (long)new_addr); + ret = modify_ftrace_direct_nolock(tr->fops, (long)new_addr); } else { ret = bpf_arch_text_poke(ip, BPF_MOD_CALL, old_addr, new_addr); } @@ -243,7 +243,7 @@ static int register_fentry(struct bpf_trampoline *tr, void *new_addr) if (tr->func.ftrace_managed) { ftrace_set_filter_ip(tr->fops, (unsigned long)ip, 0, 1); - ret = register_ftrace_direct_multi(tr->fops, (long)new_addr); + ret = register_ftrace_direct(tr->fops, (long)new_addr); } else { ret = bpf_arch_text_poke(ip, BPF_MOD_CALL, NULL, new_addr); } diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index fca478396d31..33530198d1ca 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -5317,7 +5317,7 @@ static void remove_direct_functions_hash(struct ftrace_hash *hash, unsigned long } /** - * register_ftrace_direct_multi - Call a custom trampoline directly + * register_ftrace_direct - Call a custom trampoline directly * for multiple functions registered in @ops * @ops: The address of the struct ftrace_ops object * @addr: The address of the trampoline to call at @ops functions @@ -5338,7 +5338,7 @@ static void remove_direct_functions_hash(struct ftrace_hash *hash, unsigned long * -ENODEV - @ip does not point to a ftrace nop location (or not supported) * -ENOMEM - There was an allocation failure. */ -int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) +int register_ftrace_direct(struct ftrace_ops *ops, unsigned long addr) { struct ftrace_hash *hash, *free_hash = NULL; struct ftrace_func_entry *entry, *new; @@ -5396,11 +5396,11 @@ int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) } return err; } -EXPORT_SYMBOL_GPL(register_ftrace_direct_multi); +EXPORT_SYMBOL_GPL(register_ftrace_direct); /** - * unregister_ftrace_direct_multi - Remove calls to custom trampoline - * previously registered by register_ftrace_direct_multi for @ops object. + * unregister_ftrace_direct - Remove calls to custom trampoline + * previously registered by register_ftrace_direct for @ops object. * @ops: The address of the struct ftrace_ops object * * This is used to remove a direct calls to @addr from the nop locations @@ -5411,8 +5411,8 @@ EXPORT_SYMBOL_GPL(register_ftrace_direct_multi); * 0 on success * -EINVAL - The @ops object was not properly registered. */ -int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr, - bool free_filters) +int unregister_ftrace_direct(struct ftrace_ops *ops, unsigned long addr, + bool free_filters) { struct ftrace_hash *hash = ops->func_hash->filter_hash; int err; @@ -5435,10 +5435,10 @@ int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr, ftrace_free_filter(ops); return err; } -EXPORT_SYMBOL_GPL(unregister_ftrace_direct_multi); +EXPORT_SYMBOL_GPL(unregister_ftrace_direct); static int -__modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) +__modify_ftrace_direct(struct ftrace_ops *ops, unsigned long addr) { struct ftrace_hash *hash; struct ftrace_func_entry *entry, *iter; @@ -5485,7 +5485,7 @@ __modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) } /** - * modify_ftrace_direct_multi_nolock - Modify an existing direct 'multi' call + * modify_ftrace_direct_nolock - Modify an existing direct 'multi' call * to call something else * @ops: The address of the struct ftrace_ops object * @addr: The address of the new trampoline to call at @ops functions @@ -5502,19 +5502,19 @@ __modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) * Returns: zero on success. Non zero on error, which includes: * -EINVAL - The @ops object was not properly registered. */ -int modify_ftrace_direct_multi_nolock(struct ftrace_ops *ops, unsigned long addr) +int modify_ftrace_direct_nolock(struct ftrace_ops *ops, unsigned long addr) { if (check_direct_multi(ops)) return -EINVAL; if (!(ops->flags & FTRACE_OPS_FL_ENABLED)) return -EINVAL; - return __modify_ftrace_direct_multi(ops, addr); + return __modify_ftrace_direct(ops, addr); } -EXPORT_SYMBOL_GPL(modify_ftrace_direct_multi_nolock); +EXPORT_SYMBOL_GPL(modify_ftrace_direct_nolock); /** - * modify_ftrace_direct_multi - Modify an existing direct 'multi' call + * modify_ftrace_direct - Modify an existing direct 'multi' call * to call something else * @ops: The address of the struct ftrace_ops object * @addr: The address of the new trampoline to call at @ops functions @@ -5528,7 +5528,7 @@ EXPORT_SYMBOL_GPL(modify_ftrace_direct_multi_nolock); * Returns: zero on success. Non zero on error, which includes: * -EINVAL - The @ops object was not properly registered. */ -int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) +int modify_ftrace_direct(struct ftrace_ops *ops, unsigned long addr) { int err; @@ -5538,11 +5538,11 @@ int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) return -EINVAL; mutex_lock(&direct_mutex); - err = __modify_ftrace_direct_multi(ops, addr); + err = __modify_ftrace_direct(ops, addr); mutex_unlock(&direct_mutex); return err; } -EXPORT_SYMBOL_GPL(modify_ftrace_direct_multi); +EXPORT_SYMBOL_GPL(modify_ftrace_direct); #endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS */ /** diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c index 9ce80b3ad06d..84cd7ba31d27 100644 --- a/kernel/trace/trace_selftest.c +++ b/kernel/trace/trace_selftest.c @@ -872,7 +872,8 @@ trace_selftest_startup_function_graph(struct tracer *trace, * and make sure we get graph trace. */ ftrace_set_filter_ip(&direct, (unsigned long)DYN_FTRACE_TEST_NAME, 0, 0); - ret = register_ftrace_direct_multi(&direct, (unsigned long)trace_direct_tramp); + ret = register_ftrace_direct(&direct, + (unsigned long)trace_direct_tramp); if (ret) goto out; @@ -892,9 +893,9 @@ trace_selftest_startup_function_graph(struct tracer *trace, unregister_ftrace_graph(&fgraph_ops); - ret = unregister_ftrace_direct_multi(&direct, - (unsigned long) trace_direct_tramp, - true); + ret = unregister_ftrace_direct(&direct, + (unsigned long) trace_direct_tramp, + true); if (ret) goto out; diff --git a/samples/Kconfig b/samples/Kconfig index 30ef8bd48ba3..fd24daa99f34 100644 --- a/samples/Kconfig +++ b/samples/Kconfig @@ -38,7 +38,7 @@ config SAMPLE_FTRACE_DIRECT that hooks to wake_up_process and prints the parameters. config SAMPLE_FTRACE_DIRECT_MULTI - tristate "Build register_ftrace_direct_multi() example" + tristate "Build register_ftrace_direct() on multiple ips example" depends on DYNAMIC_FTRACE_WITH_DIRECT_CALLS && m depends on HAVE_SAMPLE_FTRACE_DIRECT_MULTI help diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c index f01ac74bac10..25fba66f61c0 100644 --- a/samples/ftrace/ftrace-direct-modify.c +++ b/samples/ftrace/ftrace-direct-modify.c @@ -116,7 +116,7 @@ static int simple_thread(void *arg) if (ret) continue; t ^= 1; - ret = modify_ftrace_direct_multi(&direct, tramps[t]); + ret = modify_ftrace_direct(&direct, tramps[t]); if (!ret) my_tramp = tramps[t]; WARN_ON_ONCE(ret); @@ -132,7 +132,7 @@ static int __init ftrace_direct_init(void) int ret; ftrace_set_filter_ip(&direct, (unsigned long) my_ip, 0, 0); - ret = register_ftrace_direct_multi(&direct, my_tramp); + ret = register_ftrace_direct(&direct, my_tramp); if (!ret) simple_tsk = kthread_run(simple_thread, NULL, "event-sample-fn"); @@ -142,12 +142,12 @@ static int __init ftrace_direct_init(void) static void __exit ftrace_direct_exit(void) { kthread_stop(simple_tsk); - unregister_ftrace_direct_multi(&direct, my_tramp, true); + unregister_ftrace_direct(&direct, my_tramp, true); } module_init(ftrace_direct_init); module_exit(ftrace_direct_exit); MODULE_AUTHOR("Steven Rostedt"); -MODULE_DESCRIPTION("Example use case of using modify_ftrace_direct_multi()"); +MODULE_DESCRIPTION("Example use case of using modify_ftrace_direct()"); MODULE_LICENSE("GPL"); diff --git a/samples/ftrace/ftrace-direct-multi-modify.c b/samples/ftrace/ftrace-direct-multi-modify.c index 196b43971cb5..f72623899602 100644 --- a/samples/ftrace/ftrace-direct-multi-modify.c +++ b/samples/ftrace/ftrace-direct-multi-modify.c @@ -123,7 +123,7 @@ static int simple_thread(void *arg) if (ret) continue; t ^= 1; - ret = modify_ftrace_direct_multi(&direct, tramps[t]); + ret = modify_ftrace_direct(&direct, tramps[t]); if (!ret) my_tramp = tramps[t]; WARN_ON_ONCE(ret); @@ -141,7 +141,7 @@ static int __init ftrace_direct_multi_init(void) ftrace_set_filter_ip(&direct, (unsigned long) wake_up_process, 0, 0); ftrace_set_filter_ip(&direct, (unsigned long) schedule, 0, 0); - ret = register_ftrace_direct_multi(&direct, my_tramp); + ret = register_ftrace_direct(&direct, my_tramp); if (!ret) simple_tsk = kthread_run(simple_thread, NULL, "event-sample-fn"); @@ -151,12 +151,12 @@ static int __init ftrace_direct_multi_init(void) static void __exit ftrace_direct_multi_exit(void) { kthread_stop(simple_tsk); - unregister_ftrace_direct_multi(&direct, my_tramp, true); + unregister_ftrace_direct(&direct, my_tramp, true); } module_init(ftrace_direct_multi_init); module_exit(ftrace_direct_multi_exit); MODULE_AUTHOR("Jiri Olsa"); -MODULE_DESCRIPTION("Example use case of using modify_ftrace_direct_multi()"); +MODULE_DESCRIPTION("Example use case of using modify_ftrace_direct()"); MODULE_LICENSE("GPL"); diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c index ea0e88ee5e43..1547c2c6be02 100644 --- a/samples/ftrace/ftrace-direct-multi.c +++ b/samples/ftrace/ftrace-direct-multi.c @@ -73,12 +73,12 @@ static int __init ftrace_direct_multi_init(void) ftrace_set_filter_ip(&direct, (unsigned long) wake_up_process, 0, 0); ftrace_set_filter_ip(&direct, (unsigned long) schedule, 0, 0); - return register_ftrace_direct_multi(&direct, (unsigned long) my_tramp); + return register_ftrace_direct(&direct, (unsigned long) my_tramp); } static void __exit ftrace_direct_multi_exit(void) { - unregister_ftrace_direct_multi(&direct, (unsigned long) my_tramp, true); + unregister_ftrace_direct(&direct, (unsigned long) my_tramp, true); } module_init(ftrace_direct_multi_init); diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c index 05c3585ac15e..f28e7b99840f 100644 --- a/samples/ftrace/ftrace-direct-too.c +++ b/samples/ftrace/ftrace-direct-too.c @@ -76,17 +76,17 @@ static int __init ftrace_direct_init(void) { ftrace_set_filter_ip(&direct, (unsigned long) handle_mm_fault, 0, 0); - return register_ftrace_direct_multi(&direct, (unsigned long) my_tramp); + return register_ftrace_direct(&direct, (unsigned long) my_tramp); } static void __exit ftrace_direct_exit(void) { - unregister_ftrace_direct_multi(&direct, (unsigned long)my_tramp, true); + unregister_ftrace_direct(&direct, (unsigned long)my_tramp, true); } module_init(ftrace_direct_init); module_exit(ftrace_direct_exit); MODULE_AUTHOR("Steven Rostedt"); -MODULE_DESCRIPTION("Another example use case of using register_ftrace_direct_multi()"); +MODULE_DESCRIPTION("Another example use case of using register_ftrace_direct()"); MODULE_LICENSE("GPL"); diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c index 42ec9e39453b..d81a9473b585 100644 --- a/samples/ftrace/ftrace-direct.c +++ b/samples/ftrace/ftrace-direct.c @@ -69,17 +69,17 @@ static int __init ftrace_direct_init(void) { ftrace_set_filter_ip(&direct, (unsigned long) wake_up_process, 0, 0); - return register_ftrace_direct_multi(&direct, (unsigned long) my_tramp); + return register_ftrace_direct(&direct, (unsigned long) my_tramp); } static void __exit ftrace_direct_exit(void) { - unregister_ftrace_direct_multi(&direct, (unsigned long)my_tramp, true); + unregister_ftrace_direct(&direct, (unsigned long)my_tramp, true); } module_init(ftrace_direct_init); module_exit(ftrace_direct_exit); MODULE_AUTHOR("Steven Rostedt"); -MODULE_DESCRIPTION("Example use case of using register_ftrace_direct_multi()"); +MODULE_DESCRIPTION("Example use case of using register_ftrace_direct()"); MODULE_LICENSE("GPL"); -- 2.40.0.rc2.332.ga46443480c-goog