[PATCH OLK-5.10 01/39] mm: sharepool: remove deprecated interfaces

From: Guo Mengqi guomengqi3@huawei.com

Offering: HULK hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5KC7C CVE: NA

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Most interfaces starting with "sp_" are deprecated, remove them.

Signed-off-by: Guo Mengqi guomengqi3@huawei.com --- include/linux/share_pool.h | 90 +--------------------- mm/share_pool.c | 148 ++++++------------------------------- 2 files changed, 22 insertions(+), 216 deletions(-)

diff --git a/include/linux/share_pool.h b/include/linux/share_pool.h index c2ef26661a4f..e8bc9a368e34 100644 --- a/include/linux/share_pool.h +++ b/include/linux/share_pool.h @@ -246,53 +246,31 @@ static inline void sp_init_mm(struct mm_struct *mm) * Those interfaces are exported for modules */ extern int mg_sp_group_add_task(int pid, unsigned long prot, int spg_id); -extern int sp_group_add_task(int pid, int spg_id); - extern int mg_sp_group_del_task(int pid, int spg_id); -extern int sp_group_del_task(int pid, int spg_id); - extern int mg_sp_group_id_by_pid(int pid, int *spg_ids, int *num); -extern int sp_group_id_by_pid(int pid); - -extern int sp_group_walk(int spg_id, void *data, int (*func)(struct mm_struct *mm, void *)); extern int proc_sp_group_state(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task);

-extern void *sp_alloc(unsigned long size, unsigned long sp_flags, int spg_id); extern void *mg_sp_alloc(unsigned long size, unsigned long sp_flags, int spg_id); - -extern int sp_free(unsigned long addr, int id); extern int mg_sp_free(unsigned long addr, int id);

-extern void *sp_make_share_k2u(unsigned long kva, unsigned long size, - unsigned long sp_flags, int pid, int spg_id); extern void *mg_sp_make_share_k2u(unsigned long kva, unsigned long size, unsigned long sp_flags, int pid, int spg_id); - -extern void *sp_make_share_u2k(unsigned long uva, unsigned long size, int pid); extern void *mg_sp_make_share_u2k(unsigned long uva, unsigned long size, int pid); +extern int mg_sp_unshare(unsigned long va, unsigned long size, int spg_id);

-extern int sp_unshare(unsigned long va, unsigned long size, int pid, int spg_id); -extern int mg_sp_unshare(unsigned long va, unsigned long size, int id); - -extern int sp_walk_page_range(unsigned long uva, unsigned long size, - struct task_struct *tsk, struct sp_walk_data *sp_walk_data); extern int mg_sp_walk_page_range(unsigned long uva, unsigned long size, struct task_struct *tsk, struct sp_walk_data *sp_walk_data);

-extern void sp_walk_page_free(struct sp_walk_data *sp_walk_data); extern void mg_sp_walk_page_free(struct sp_walk_data *sp_walk_data);

extern int sp_register_notifier(struct notifier_block *nb); extern int sp_unregister_notifier(struct notifier_block *nb);

-extern bool sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid); extern bool mg_sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid);

-extern bool is_sharepool_addr(unsigned long addr); extern bool mg_is_sharepool_addr(unsigned long addr);

-extern int sp_id_of_current(void); extern int mg_sp_id_of_current(void);

extern void sp_area_drop(struct vm_area_struct *vma); @@ -350,21 +328,11 @@ static inline int mg_sp_group_add_task(int pid, unsigned long prot, int spg_id) return -EPERM; }

-static inline int sp_group_add_task(int pid, int spg_id) -{ - return -EPERM; -} - static inline int mg_sp_group_del_task(int pid, int spg_id) { return -EPERM; }

-static inline int sp_group_del_task(int pid, int spg_id) -{ - return -EPERM; -} - static inline int sp_group_exit(struct mm_struct *mm) { return 0; @@ -379,74 +347,38 @@ static inline int mg_sp_group_id_by_pid(int pid, int *spg_ids, int *num) return -EPERM; }

-static inline int sp_group_id_by_pid(int pid) -{ - return -EPERM; -} - static inline int proc_sp_group_state(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task) { return -EPERM; }

-static inline void *sp_alloc(unsigned long size, unsigned long sp_flags, int sp_id) -{ - return NULL; -} - static inline void *mg_sp_alloc(unsigned long size, unsigned long sp_flags, int spg_id) { return NULL; }

-static inline int sp_free(unsigned long addr, int id) -{ - return -EPERM; -} - static inline int mg_sp_free(unsigned long addr, int id) { return -EPERM; }

-static inline void *sp_make_share_k2u(unsigned long kva, unsigned long size, - unsigned long sp_flags, int pid, int spg_id) -{ - return NULL; -} - static inline void *mg_sp_make_share_k2u(unsigned long kva, unsigned long size, unsigned long sp_flags, int pid, int spg_id) { return NULL; }

-static inline void *sp_make_share_u2k(unsigned long uva, unsigned long size, int pid) -{ - return NULL; -} - static inline void *mg_sp_make_share_u2k(unsigned long uva, unsigned long size, int pid) { return NULL; }

-static inline int sp_unshare(unsigned long va, unsigned long size, int pid, int spg_id) -{ - return -EPERM; -} - static inline int mg_sp_unshare(unsigned long va, unsigned long size, int id) { return -EPERM; }

-static inline int sp_id_of_current(void) -{ - return -EPERM; -} - static inline int mg_sp_id_of_current(void) { return -EPERM; @@ -460,22 +392,12 @@ static inline void sp_area_drop(struct vm_area_struct *vma) { }

-static inline int sp_walk_page_range(unsigned long uva, unsigned long size, - struct task_struct *tsk, struct sp_walk_data *sp_walk_data) -{ - return 0; -} - static inline int mg_sp_walk_page_range(unsigned long uva, unsigned long size, struct task_struct *tsk, struct sp_walk_data *sp_walk_data) { return 0; }

-static inline void sp_walk_page_free(struct sp_walk_data *sp_walk_data) -{ -} - static inline void mg_sp_walk_page_free(struct sp_walk_data *sp_walk_data) { } @@ -490,21 +412,11 @@ static inline int sp_unregister_notifier(struct notifier_block *nb) return -EPERM; }

-static inline bool sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid) -{ - return false; -} - static inline bool mg_sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid) { return false; }

-static inline bool is_sharepool_addr(unsigned long addr) -{ - return false; -} - static inline bool mg_is_sharepool_addr(unsigned long addr) { return false; diff --git a/mm/share_pool.c b/mm/share_pool.c index ab77d0d7648c..a8fc2fc3a746 100644 --- a/mm/share_pool.c +++ b/mm/share_pool.c @@ -1009,38 +1009,6 @@ static struct sp_group *__sp_find_spg(int pid, int spg_id) return spg; }

-/** - * sp_group_id_by_pid() - Get the sp_group ID of a process. - * @pid: pid of target process. - * - * Return: - * 0 the sp_group ID. - * -ENODEV target process doesn't belong to any sp_group. - */ -int sp_group_id_by_pid(int pid) -{ - struct sp_group *spg; - int spg_id = -ENODEV; - - if (!sp_is_enabled()) - return -EOPNOTSUPP; - - check_interrupt_context(); - - spg = __sp_find_spg(pid, SPG_ID_DEFAULT); - if (!spg) - return -ENODEV; - - down_read(&spg->rw_lock); - if (spg_valid(spg)) - spg_id = spg->id; - up_read(&spg->rw_lock); - - sp_group_drop(spg); - return spg_id; -} -EXPORT_SYMBOL_GPL(sp_group_id_by_pid); - /** * mp_sp_group_id_by_pid() - Get the sp_group ID array of a process. * @pid: pid of target process. @@ -1617,12 +1585,6 @@ int mg_sp_group_add_task(int pid, unsigned long prot, int spg_id) } EXPORT_SYMBOL_GPL(mg_sp_group_add_task);

-int sp_group_add_task(int pid, int spg_id) -{ - return mg_sp_group_add_task(pid, PROT_READ | PROT_WRITE, spg_id); -} -EXPORT_SYMBOL_GPL(sp_group_add_task); - /** * mg_sp_group_del_task() - delete a process from a sp group. * @pid: the pid of the task to be deleted @@ -1726,13 +1688,7 @@ int mg_sp_group_del_task(int pid, int spg_id) } EXPORT_SYMBOL_GPL(mg_sp_group_del_task);

-int sp_group_del_task(int pid, int spg_id) -{ - return mg_sp_group_del_task(pid, spg_id); -} -EXPORT_SYMBOL_GPL(sp_group_del_task); - -int sp_id_of_current(void) +int mg_sp_id_of_current(void) { int ret, spg_id; struct sp_group_master *master; @@ -1764,12 +1720,6 @@ int sp_id_of_current(void)

return spg_id; } -EXPORT_SYMBOL_GPL(sp_id_of_current); - -int mg_sp_id_of_current(void) -{ - return sp_id_of_current(); -} EXPORT_SYMBOL_GPL(mg_sp_id_of_current);

/* the caller must hold sp_area_lock */ @@ -2298,7 +2248,7 @@ static int sp_free_get_spa(struct sp_free_context *fc) }

/** - * sp_free() - Free the memory allocated by sp_alloc(). + * mg_sp_free() - Free the memory allocated by mg_sp_alloc(). * @addr: the starting VA of the memory. * @id: Address space identifier, which is used to distinguish the addr. * @@ -2307,7 +2257,7 @@ static int sp_free_get_spa(struct sp_free_context *fc) * * -EINVAL - the memory can't be found or was not allocted by share pool. * * -EPERM - the caller has no permision to free the memory. */ -int sp_free(unsigned long addr, int id) +int mg_sp_free(unsigned long addr, int id) { int ret = 0; struct sp_free_context fc = { @@ -2341,12 +2291,6 @@ int sp_free(unsigned long addr, int id) sp_try_to_compact(); return ret; } -EXPORT_SYMBOL_GPL(sp_free); - -int mg_sp_free(unsigned long addr, int id) -{ - return sp_free(addr, id); -} EXPORT_SYMBOL_GPL(mg_sp_free);

/* wrapper of __do_mmap() and the caller must hold down_write(&mm->mmap_lock). */ @@ -2745,7 +2689,7 @@ static void sp_alloc_finish(int result, struct sp_area *spa, }

/** - * sp_alloc() - Allocate shared memory for all the processes in a sp_group. + * mg_sp_alloc() - Allocate shared memory for all the processes in a sp_group. * @size: the size of memory to allocate. * @sp_flags: how to allocate the memory. * @spg_id: the share group that the memory is allocated to. @@ -2756,7 +2700,7 @@ static void sp_alloc_finish(int result, struct sp_area *spa, * * if succeed, return the starting address of the shared memory. * * if fail, return the pointer of -errno. */ -void *sp_alloc(unsigned long size, unsigned long sp_flags, int spg_id) +void *mg_sp_alloc(unsigned long size, unsigned long sp_flags, int spg_id) { struct sp_area *spa = NULL; int ret = 0; @@ -2790,12 +2734,6 @@ void *sp_alloc(unsigned long size, unsigned long sp_flags, int spg_id) else return (void *)(spa->va_start); } -EXPORT_SYMBOL_GPL(sp_alloc); - -void *mg_sp_alloc(unsigned long size, unsigned long sp_flags, int spg_id) -{ - return sp_alloc(size, sp_flags, spg_id); -} EXPORT_SYMBOL_GPL(mg_sp_alloc);

/** @@ -3126,7 +3064,7 @@ static void *sp_k2u_finish(void *uva, struct sp_k2u_context *kc) }

/** - * sp_make_share_k2u() - Share kernel memory to current process or an sp_group. + * mg_sp_make_share_k2u() - Share kernel memory to current process or an sp_group. * @kva: the VA of shared kernel memory. * @size: the size of shared kernel memory. * @sp_flags: how to allocate the memory. We only support SP_DVPP. @@ -3142,7 +3080,7 @@ static void *sp_k2u_finish(void *uva, struct sp_k2u_context *kc) * * if succeed, return the shared user address to start at. * * if fail, return the pointer of -errno. */ -void *sp_make_share_k2u(unsigned long kva, unsigned long size, +void *mg_sp_make_share_k2u(unsigned long kva, unsigned long size, unsigned long sp_flags, int pid, int spg_id) { void *uva; @@ -3180,13 +3118,6 @@ void *sp_make_share_k2u(unsigned long kva, unsigned long size, out: return sp_k2u_finish(uva, &kc); } -EXPORT_SYMBOL_GPL(sp_make_share_k2u); - -void *mg_sp_make_share_k2u(unsigned long kva, unsigned long size, - unsigned long sp_flags, int pid, int spg_id) -{ - return sp_make_share_k2u(kva, size, sp_flags, pid, spg_id); -} EXPORT_SYMBOL_GPL(mg_sp_make_share_k2u);

static int sp_pmd_entry(pmd_t *pmd, unsigned long addr, @@ -3422,7 +3353,7 @@ static void __sp_walk_page_free(struct sp_walk_data *data) }

/** - * sp_make_share_u2k() - Share user memory of a specified process to kernel. + * mg_sp_make_share_u2k() - Share user memory of a specified process to kernel. * @uva: the VA of shared user memory * @size: the size of shared user memory * @pid: the pid of the specified process(Not currently in use) @@ -3431,7 +3362,7 @@ static void __sp_walk_page_free(struct sp_walk_data *data) * * if success, return the starting kernel address of the shared memory. * * if failed, return the pointer of -errno. */ -void *sp_make_share_u2k(unsigned long uva, unsigned long size, int pid) +void *mg_sp_make_share_u2k(unsigned long uva, unsigned long size, int pid) { int ret = 0; struct mm_struct *mm = current->mm; @@ -3490,12 +3421,6 @@ void *sp_make_share_u2k(unsigned long uva, unsigned long size, int pid) kvfree(sp_walk_data.pages); return p; } -EXPORT_SYMBOL_GPL(sp_make_share_u2k); - -void *mg_sp_make_share_u2k(unsigned long uva, unsigned long size, int pid) -{ - return sp_make_share_u2k(uva, size, pid); -} EXPORT_SYMBOL_GPL(mg_sp_make_share_u2k);

/* @@ -3717,7 +3642,7 @@ static int sp_unshare_kva(unsigned long kva, unsigned long size) }

/** - * sp_unshare() - Unshare the kernel or user memory which shared by calling + * mg_sp_unshare() - Unshare the kernel or user memory which shared by calling * sp_make_share_{k2u,u2k}(). * @va: the specified virtual address of memory * @size: the size of unshared memory @@ -3726,7 +3651,7 @@ static int sp_unshare_kva(unsigned long kva, unsigned long size) * * Return: 0 for success, -errno on failure. */ -int sp_unshare(unsigned long va, unsigned long size, int pid, int spg_id) +int mg_sp_unshare(unsigned long va, unsigned long size, int spg_id) { int ret = 0;

@@ -3752,16 +3677,10 @@ int sp_unshare(unsigned long va, unsigned long size, int pid, int spg_id)

return ret; } -EXPORT_SYMBOL_GPL(sp_unshare); - -int mg_sp_unshare(unsigned long va, unsigned long size, int id) -{ - return sp_unshare(va, size, 0, id); -} EXPORT_SYMBOL_GPL(mg_sp_unshare);

/** - * sp_walk_page_range() - Walk page table with caller specific callbacks. + * mg_sp_walk_page_range() - Walk page table with caller specific callbacks. * @uva: the start VA of user memory. * @size: the size of user memory. * @tsk: task struct of the target task. @@ -3772,7 +3691,7 @@ EXPORT_SYMBOL_GPL(mg_sp_unshare); * When return 0, sp_walk_data describing [uva, uva+size) can be used. * When return -errno, information in sp_walk_data is useless. */ -int sp_walk_page_range(unsigned long uva, unsigned long size, +int mg_sp_walk_page_range(unsigned long uva, unsigned long size, struct task_struct *tsk, struct sp_walk_data *sp_walk_data) { struct mm_struct *mm; @@ -3811,20 +3730,13 @@ int sp_walk_page_range(unsigned long uva, unsigned long size,

return ret; } -EXPORT_SYMBOL_GPL(sp_walk_page_range); - -int mg_sp_walk_page_range(unsigned long uva, unsigned long size, - struct task_struct *tsk, struct sp_walk_data *sp_walk_data) -{ - return sp_walk_page_range(uva, size, tsk, sp_walk_data); -} EXPORT_SYMBOL_GPL(mg_sp_walk_page_range);

/** - * sp_walk_page_free() - Free the sp_walk_data structure. + * mg_sp_walk_page_free() - Free the sp_walk_data structure. * @sp_walk_data: a structure of a page pointer array to be freed. */ -void sp_walk_page_free(struct sp_walk_data *sp_walk_data) +void mg_sp_walk_page_free(struct sp_walk_data *sp_walk_data) { if (!sp_is_enabled()) return; @@ -3836,12 +3748,6 @@ void sp_walk_page_free(struct sp_walk_data *sp_walk_data)

__sp_walk_page_free(sp_walk_data); } -EXPORT_SYMBOL_GPL(sp_walk_page_free); - -void mg_sp_walk_page_free(struct sp_walk_data *sp_walk_data) -{ - sp_walk_page_free(sp_walk_data); -} EXPORT_SYMBOL_GPL(mg_sp_walk_page_free);

int sp_register_notifier(struct notifier_block *nb) @@ -3857,7 +3763,7 @@ int sp_unregister_notifier(struct notifier_block *nb) EXPORT_SYMBOL_GPL(sp_unregister_notifier);

/** - * sp_config_dvpp_range() - User can config the share pool start address + * mg_sp_config_dvpp_range() - User can config the share pool start address * of each Da-vinci device. * @start: the value of share pool start * @size: the value of share pool @@ -3868,7 +3774,7 @@ EXPORT_SYMBOL_GPL(sp_unregister_notifier); * Return false if parameter invalid or has been set up. * This functuon has no concurrent problem. */ -bool sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid) +bool mg_sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid) { int ret; bool err = false; @@ -3918,12 +3824,6 @@ bool sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid)

return err; } -EXPORT_SYMBOL_GPL(sp_config_dvpp_range); - -bool mg_sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid) -{ - return sp_config_dvpp_range(start, size, device_id, pid); -} EXPORT_SYMBOL_GPL(mg_sp_config_dvpp_range);

static bool is_sp_normal_addr(unsigned long addr) @@ -3934,22 +3834,16 @@ static bool is_sp_normal_addr(unsigned long addr) }

/** - * is_sharepool_addr() - Check if a user memory address belongs to share pool. + * mg_is_sharepool_addr() - Check if a user memory address belongs to share pool. * @addr: the userspace address to be checked. * * Return true if addr belongs to share pool, or false vice versa. */ -bool is_sharepool_addr(unsigned long addr) +bool mg_is_sharepool_addr(unsigned long addr) { return sp_is_enabled() && (is_sp_normal_addr(addr) || is_device_addr(addr)); } -EXPORT_SYMBOL_GPL(is_sharepool_addr); - -bool mg_is_sharepool_addr(unsigned long addr) -{ - return is_sharepool_addr(addr); -} EXPORT_SYMBOL_GPL(mg_is_sharepool_addr);

int sp_node_id(struct vm_area_struct *vma) @@ -4430,7 +4324,7 @@ static void __init proc_sharepool_init(void)

bool sp_check_addr(unsigned long addr) { - if (sp_is_enabled() && is_sharepool_addr(addr) && + if (sp_is_enabled() && mg_is_sharepool_addr(addr) && !check_aoscore_process(current)) { sp_dump_stack(); return true; @@ -4440,7 +4334,7 @@ bool sp_check_addr(unsigned long addr)

bool sp_check_mmap_addr(unsigned long addr, unsigned long flags) { - if (sp_is_enabled() && is_sharepool_addr(addr) && + if (sp_is_enabled() && mg_is_sharepool_addr(addr) && !check_aoscore_process(current) && !(flags & MAP_SHARE_POOL)) { sp_dump_stack(); return true;