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authorEric W. Biederman <ebiederm@xmission.com>2022-01-08 11:23:02 -0600
committerEric W. Biederman <ebiederm@xmission.com>2022-01-08 12:43:57 -0600
commit2d4bcf886e42f0f4846a3d9bdc3a90d278903a2e (patch)
tree5a136721b78ad7530bd0befd4961f1ed6b110ccb /kernel/profile.c
parent6410349ea5e177f3e53c2006d2041eed47e986ae (diff)
exit: Remove profile_task_exit & profile_munmap
When I say remove I mean remove. All profile_task_exit and profile_munmap do is call a blocking notifier chain. The helpers profile_task_register and profile_task_unregister are not called anywhere in the tree. Which means this is all dead code. So remove the dead code and make it easier to read do_exit. Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lkml.kernel.org/r/20220103213312.9144-1-ebiederm@xmission.com Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'kernel/profile.c')
-rw-r--r--kernel/profile.c50
1 files changed, 0 insertions, 50 deletions
diff --git a/kernel/profile.c b/kernel/profile.c
index eb9c7f0f5ac5..9355cc934a96 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -135,14 +135,7 @@ int __ref profile_init(void)
/* Profile event notifications */
-static BLOCKING_NOTIFIER_HEAD(task_exit_notifier);
static ATOMIC_NOTIFIER_HEAD(task_free_notifier);
-static BLOCKING_NOTIFIER_HEAD(munmap_notifier);
-
-void profile_task_exit(struct task_struct *task)
-{
- blocking_notifier_call_chain(&task_exit_notifier, 0, task);
-}
int profile_handoff_task(struct task_struct *task)
{
@@ -151,11 +144,6 @@ int profile_handoff_task(struct task_struct *task)
return (ret == NOTIFY_OK) ? 1 : 0;
}
-void profile_munmap(unsigned long addr)
-{
- blocking_notifier_call_chain(&munmap_notifier, 0, (void *)addr);
-}
-
int task_handoff_register(struct notifier_block *n)
{
return atomic_notifier_chain_register(&task_free_notifier, n);
@@ -168,44 +156,6 @@ int task_handoff_unregister(struct notifier_block *n)
}
EXPORT_SYMBOL_GPL(task_handoff_unregister);
-int profile_event_register(enum profile_type type, struct notifier_block *n)
-{
- int err = -EINVAL;
-
- switch (type) {
- case PROFILE_TASK_EXIT:
- err = blocking_notifier_chain_register(
- &task_exit_notifier, n);
- break;
- case PROFILE_MUNMAP:
- err = blocking_notifier_chain_register(
- &munmap_notifier, n);
- break;
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(profile_event_register);
-
-int profile_event_unregister(enum profile_type type, struct notifier_block *n)
-{
- int err = -EINVAL;
-
- switch (type) {
- case PROFILE_TASK_EXIT:
- err = blocking_notifier_chain_unregister(
- &task_exit_notifier, n);
- break;
- case PROFILE_MUNMAP:
- err = blocking_notifier_chain_unregister(
- &munmap_notifier, n);
- break;
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(profile_event_unregister);
-
#if defined(CONFIG_SMP) && defined(CONFIG_PROC_FS)
/*
* Each cpu has a pair of open-addressed hashtables for pending