From 3ff176ca47911630d1555f150d36daa2d0819ea9 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 22 Jan 2009 17:40:42 +0100 Subject: [PATCH] lockdep: simplify get_user_chars() there's too much repetition of code.. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- kernel/lockdep.c | 69 ++++++++++++++++++------------------------------ 1 file changed, 26 insertions(+), 43 deletions(-) diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 02e6e066d563..1b4ee3c0b789 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -467,54 +467,37 @@ const char * __get_key_name(struct lockdep_subclass_key *key, char *str) return kallsyms_lookup((unsigned long)key, NULL, NULL, NULL, str); } +static inline unsigned long lock_flag(enum lock_usage_bit bit) +{ + return 1UL << bit; +} + +static char get_usage_char(struct lock_class *class, enum lock_usage_bit bit) +{ + char c = '.'; + + if (class->usage_mask & lock_flag(bit + 2)) + c = '+'; + if (class->usage_mask & lock_flag(bit)) { + c = '-'; + if (class->usage_mask & lock_flag(bit + 2)) + c = '?'; + } + + return c; +} + void get_usage_chars(struct lock_class *class, char *c1, char *c2, char *c3, char *c4, char *c5, char *c6) { - *c1 = '.', *c2 = '.', *c3 = '.', *c4 = '.', *c5 = '.', *c6 = '.'; - - if (class->usage_mask & LOCKF_USED_IN_HARDIRQ) - *c1 = '+'; - else - if (class->usage_mask & LOCKF_ENABLED_HARDIRQ) - *c1 = '-'; - - if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ) - *c2 = '+'; - else - if (class->usage_mask & LOCKF_ENABLED_SOFTIRQ) - *c2 = '-'; - - if (class->usage_mask & LOCKF_ENABLED_HARDIRQ_READ) - *c3 = '-'; - if (class->usage_mask & LOCKF_USED_IN_HARDIRQ_READ) { - *c3 = '+'; - if (class->usage_mask & LOCKF_ENABLED_HARDIRQ_READ) - *c3 = '?'; - } - - if (class->usage_mask & LOCKF_ENABLED_SOFTIRQ_READ) - *c4 = '-'; - if (class->usage_mask & LOCKF_USED_IN_SOFTIRQ_READ) { - *c4 = '+'; - if (class->usage_mask & LOCKF_ENABLED_SOFTIRQ_READ) - *c4 = '?'; - } - - if (class->usage_mask & LOCKF_USED_IN_RECLAIM_FS) - *c5 = '+'; - else - if (class->usage_mask & LOCKF_ENABLED_RECLAIM_FS) - *c5 = '-'; - - if (class->usage_mask & LOCKF_ENABLED_RECLAIM_FS_READ) - *c6 = '-'; - if (class->usage_mask & LOCKF_USED_IN_RECLAIM_FS_READ) { - *c6 = '+'; - if (class->usage_mask & LOCKF_ENABLED_RECLAIM_FS_READ) - *c6 = '?'; - } + *c1 = get_usage_char(class, LOCK_USED_IN_HARDIRQ); + *c2 = get_usage_char(class, LOCK_USED_IN_SOFTITQ); + *c3 = get_usage_char(class, LOCK_USED_IN_HARDIRQ_READ); + *c4 = get_usage_char(class, LOCK_USED_IN_SOFTITQ_READ); + *c5 = get_usage_char(class, LOCK_USED_IN_RECLAIM_FS); + *c6 = get_usage_char(class, LOCK_USED_IN_RECLAIM_FS_READ); } static void print_lock_name(struct lock_class *class)