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| author | Peter Zijlstra <peterz@infradead.org> | 2015-07-24 15:02:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-08-03 11:34:14 +0200 |
| commit | 7dcfd915bae51571bcc339d8e3dda027287880e5 (patch) | |
| tree | fca6824ca88c535b73a56513a9df40e3a5f65f50 /kernel/jump_label.c | |
| parent | a1efb01feca597b2abbc89873b40ef8ec6690168 (diff) | |
| download | linux-7dcfd915bae51571bcc339d8e3dda027287880e5.tar.gz linux-7dcfd915bae51571bcc339d8e3dda027287880e5.tar.bz2 linux-7dcfd915bae51571bcc339d8e3dda027287880e5.zip | |
jump_label: Add jump_entry_key() helper
Avoid some casting with a helper, also prepares the way for
overloading the LSB of jump_entry::key.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/jump_label.c')
| -rw-r--r-- | kernel/jump_label.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/kernel/jump_label.c b/kernel/jump_label.c index 85a2a0086c67..72707e44c44d 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -188,6 +188,11 @@ static inline struct jump_entry *static_key_entries(struct static_key *key) return (struct jump_entry *)((unsigned long)key->entries & ~JUMP_TYPE_MASK); } +static inline struct static_key *jump_entry_key(struct jump_entry *entry) +{ + return (struct static_key *)((unsigned long)entry->key); +} + static enum jump_label_type jump_label_type(struct static_key *key) { bool enabled = static_key_enabled(key); @@ -209,7 +214,7 @@ void __init jump_label_init(void) for (iter = iter_start; iter < iter_stop; iter++) { struct static_key *iterk; - iterk = (struct static_key *)(unsigned long)iter->key; + iterk = jump_entry_key(iter); arch_jump_label_transform_static(iter, jump_label_type(iterk)); if (iterk == key) continue; @@ -304,7 +309,7 @@ static int jump_label_add_module(struct module *mod) for (iter = iter_start; iter < iter_stop; iter++) { struct static_key *iterk; - iterk = (struct static_key *)(unsigned long)iter->key; + iterk = jump_entry_key(iter); if (iterk == key) continue; @@ -341,10 +346,10 @@ static void jump_label_del_module(struct module *mod) struct static_key_mod *jlm, **prev; for (iter = iter_start; iter < iter_stop; iter++) { - if (iter->key == (jump_label_t)(unsigned long)key) + if (jump_entry_key(iter) == key) continue; - key = (struct static_key *)(unsigned long)iter->key; + key = jump_entry_key(iter); if (within_module(iter->key, mod)) continue; |