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Sat, 29 Jan 2022 17:02:05 +0000 From: Christophe Leroy To: Luis Chamberlain , Jessica Yu CC: Christophe Leroy , "linux-kernel@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "kgdb-bugreport@lists.sourceforge.net" , "linux-mm@kvack.org" , "linux-arch@vger.kernel.org" Subject: [PATCH v3 2/6] modules: Prepare for handling several RB trees Thread-Topic: [PATCH v3 2/6] modules: Prepare for handling several RB trees Thread-Index: AQHYFTHxTvyQXbQLfkCX5PUzwy1VGA== Date: Sat, 29 Jan 2022 17:02:05 +0000 Message-ID: <4332de93cfe4eaaf756825d5f72cc7c9fae13c34.1643475473.git.christophe.leroy@csgroup.eu> References: In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=csgroup.eu; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f8beb2b4-6937-4366-c451-08d9e3491418 x-ms-traffictypediagnostic: PR0P264MB2584:EE_ x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5797; 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charset="iso-8859-1" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-OriginatorOrg: csgroup.eu X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: f8beb2b4-6937-4366-c451-08d9e3491418 X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jan 2022 17:02:05.8452 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 9914def7-b676-4fda-8815-5d49fb3b45c8 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: LdH7KpXpLR/SPVoBEu5F8ZKXySA9jFWD/oO3FnfyWuPiW9sB0K30qo4RJusuH7jHu9KByUnzLuzMMX7KzbnmhWKLV4Ggy0gEW6HrN7Q2g+0= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR0P264MB2584 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to separate text and data, we need to setup two rb trees. Modify functions to give the tree as a parameter. Signed-off-by: Christophe Leroy --- kernel/module.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/kernel/module.c b/kernel/module.c index 080193e15d24..163e32e39064 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -162,14 +162,14 @@ static const struct latch_tree_ops mod_tree_ops = { .comp = mod_tree_comp, }; -static noinline void __mod_tree_insert(struct mod_tree_node *node) +static noinline void __mod_tree_insert(struct mod_tree_node *node, struct mod_tree_root *tree) { - latch_tree_insert(&node->node, &mod_tree.root, &mod_tree_ops); + latch_tree_insert(&node->node, &tree->root, &mod_tree_ops); } -static void __mod_tree_remove(struct mod_tree_node *node) +static void __mod_tree_remove(struct mod_tree_node *node, struct mod_tree_root *tree) { - latch_tree_erase(&node->node, &mod_tree.root, &mod_tree_ops); + latch_tree_erase(&node->node, &tree->root, &mod_tree_ops); } /* @@ -181,28 +181,28 @@ static void mod_tree_insert(struct module *mod) mod->core_layout.mtn.mod = mod; mod->init_layout.mtn.mod = mod; - __mod_tree_insert(&mod->core_layout.mtn); + __mod_tree_insert(&mod->core_layout.mtn, &mod_tree); if (mod->init_layout.size) - __mod_tree_insert(&mod->init_layout.mtn); + __mod_tree_insert(&mod->init_layout.mtn, &mod_tree); } static void mod_tree_remove_init(struct module *mod) { if (mod->init_layout.size) - __mod_tree_remove(&mod->init_layout.mtn); + __mod_tree_remove(&mod->init_layout.mtn, &mod_tree); } static void mod_tree_remove(struct module *mod) { - __mod_tree_remove(&mod->core_layout.mtn); + __mod_tree_remove(&mod->core_layout.mtn, &mod_tree); mod_tree_remove_init(mod); } -static struct module *mod_find(unsigned long addr) +static struct module *mod_find(unsigned long addr, struct mod_tree_root *tree) { struct latch_tree_node *ltn; - ltn = latch_tree_find((void *)addr, &mod_tree.root, &mod_tree_ops); + ltn = latch_tree_find((void *)addr, &tree->root, &mod_tree_ops); if (!ltn) return NULL; @@ -215,7 +215,7 @@ static void mod_tree_insert(struct module *mod) { } static void mod_tree_remove_init(struct module *mod) { } static void mod_tree_remove(struct module *mod) { } -static struct module *mod_find(unsigned long addr) +static struct module *mod_find(unsigned long addr, struct mod_tree_root *tree) { struct module *mod; @@ -234,22 +234,22 @@ static struct module *mod_find(unsigned long addr) * Bounds of module text, for speeding up __module_address. * Protected by module_mutex. */ -static void __mod_update_bounds(void *base, unsigned int size) +static void __mod_update_bounds(void *base, unsigned int size, struct mod_tree_root *tree) { unsigned long min = (unsigned long)base; unsigned long max = min + size; - if (min < module_addr_min) - module_addr_min = min; - if (max > module_addr_max) - module_addr_max = max; + if (min < tree->addr_min) + tree->addr_min = min; + if (max > tree->addr_max) + tree->addr_max = max; } static void mod_update_bounds(struct module *mod) { - __mod_update_bounds(mod->core_layout.base, mod->core_layout.size); + __mod_update_bounds(mod->core_layout.base, mod->core_layout.size, &mod_tree); if (mod->init_layout.size) - __mod_update_bounds(mod->init_layout.base, mod->init_layout.size); + __mod_update_bounds(mod->init_layout.base, mod->init_layout.size, &mod_tree); } #ifdef CONFIG_KGDB_KDB @@ -4742,7 +4742,7 @@ struct module *__module_address(unsigned long addr) module_assert_mutex_or_preempt(); 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: csgroup.eu X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: f8beb2b4-6937-4366-c451-08d9e3491418 X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jan 2022 17:02:05.8452 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 9914def7-b676-4fda-8815-5d49fb3b45c8 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: LdH7KpXpLR/SPVoBEu5F8ZKXySA9jFWD/oO3FnfyWuPiW9sB0K30qo4RJusuH7jHu9KByUnzLuzMMX7KzbnmhWKLV4Ggy0gEW6HrN7Q2g+0= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR0P264MB2584 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "linux-arch@vger.kernel.org" , "kgdb-bugreport@lists.sourceforge.net" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linuxppc-dev@lists.ozlabs.org" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" In order to separate text and data, we need to setup two rb trees. Modify functions to give the tree as a parameter. Signed-off-by: Christophe Leroy --- kernel/module.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/kernel/module.c b/kernel/module.c index 080193e15d24..163e32e39064 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -162,14 +162,14 @@ static const struct latch_tree_ops mod_tree_ops =3D { .comp =3D mod_tree_comp, }; =20 -static noinline void __mod_tree_insert(struct mod_tree_node *node) +static noinline void __mod_tree_insert(struct mod_tree_node *node, struct = mod_tree_root *tree) { - latch_tree_insert(&node->node, &mod_tree.root, &mod_tree_ops); + latch_tree_insert(&node->node, &tree->root, &mod_tree_ops); } =20 -static void __mod_tree_remove(struct mod_tree_node *node) +static void __mod_tree_remove(struct mod_tree_node *node, struct mod_tree_= root *tree) { - latch_tree_erase(&node->node, &mod_tree.root, &mod_tree_ops); + latch_tree_erase(&node->node, &tree->root, &mod_tree_ops); } =20 /* @@ -181,28 +181,28 @@ static void mod_tree_insert(struct module *mod) mod->core_layout.mtn.mod =3D mod; mod->init_layout.mtn.mod =3D mod; =20 - __mod_tree_insert(&mod->core_layout.mtn); + __mod_tree_insert(&mod->core_layout.mtn, &mod_tree); if (mod->init_layout.size) - __mod_tree_insert(&mod->init_layout.mtn); + __mod_tree_insert(&mod->init_layout.mtn, &mod_tree); } =20 static void mod_tree_remove_init(struct module *mod) { if (mod->init_layout.size) - __mod_tree_remove(&mod->init_layout.mtn); + __mod_tree_remove(&mod->init_layout.mtn, &mod_tree); } =20 static void mod_tree_remove(struct module *mod) { - __mod_tree_remove(&mod->core_layout.mtn); + __mod_tree_remove(&mod->core_layout.mtn, &mod_tree); mod_tree_remove_init(mod); } =20 -static struct module *mod_find(unsigned long addr) +static struct module *mod_find(unsigned long addr, struct mod_tree_root *t= ree) { struct latch_tree_node *ltn; =20 - ltn =3D latch_tree_find((void *)addr, &mod_tree.root, &mod_tree_ops); + ltn =3D latch_tree_find((void *)addr, &tree->root, &mod_tree_ops); if (!ltn) return NULL; =20 @@ -215,7 +215,7 @@ static void mod_tree_insert(struct module *mod) { } static void mod_tree_remove_init(struct module *mod) { } static void mod_tree_remove(struct module *mod) { } =20 -static struct module *mod_find(unsigned long addr) +static struct module *mod_find(unsigned long addr, struct mod_tree_root *t= ree) { struct module *mod; =20 @@ -234,22 +234,22 @@ static struct module *mod_find(unsigned long addr) * Bounds of module text, for speeding up __module_address. * Protected by module_mutex. */ -static void __mod_update_bounds(void *base, unsigned int size) +static void __mod_update_bounds(void *base, unsigned int size, struct mod_= tree_root *tree) { unsigned long min =3D (unsigned long)base; unsigned long max =3D min + size; =20 - if (min < module_addr_min) - module_addr_min =3D min; - if (max > module_addr_max) - module_addr_max =3D max; + if (min < tree->addr_min) + tree->addr_min =3D min; + if (max > tree->addr_max) + tree->addr_max =3D max; } =20 static void mod_update_bounds(struct module *mod) { - __mod_update_bounds(mod->core_layout.base, mod->core_layout.size); + __mod_update_bounds(mod->core_layout.base, mod->core_layout.size, &mod_tr= ee); if (mod->init_layout.size) - __mod_update_bounds(mod->init_layout.base, mod->init_layout.size); + __mod_update_bounds(mod->init_layout.base, mod->init_layout.size, &mod_t= ree); } =20 #ifdef CONFIG_KGDB_KDB @@ -4742,7 +4742,7 @@ struct module *__module_address(unsigned long addr) =20 module_assert_mutex_or_preempt(); =20 - mod =3D mod_find(addr); + mod =3D mod_find(addr, &mod_tree); if (mod) { BUG_ON(!within_module(addr, mod)); if (mod->state =3D=3D MODULE_STATE_UNFORMED) --=20 2.33.1