gcc-4.6: kernel/*: Fix unused but set warnings
Andi Kleen [Tue, 10 Aug 2010 21:17:51 +0000 (14:17 -0700)]
No real bugs I believe, just some dead code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: andi@firstfloor.org
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/debug/kdb/kdb_bp.c
kernel/hrtimer.c
kernel/sched_fair.c
kernel/sysctl.c
kernel/trace/ring_buffer.c

index 75bd9b3..20059ef 100644 (file)
@@ -274,7 +274,6 @@ static int kdb_bp(int argc, const char **argv)
        int i, bpno;
        kdb_bp_t *bp, *bp_check;
        int diag;
-       int free;
        char *symname = NULL;
        long offset = 0ul;
        int nextarg;
@@ -305,7 +304,6 @@ static int kdb_bp(int argc, const char **argv)
        /*
         * Find an empty bp structure to allocate
         */
-       free = KDB_MAXBPT;
        for (bpno = 0, bp = kdb_breakpoints; bpno < KDB_MAXBPT; bpno++, bp++) {
                if (bp->bp_free)
                        break;
index ce66917..1decafb 100644 (file)
@@ -1091,11 +1091,10 @@ EXPORT_SYMBOL_GPL(hrtimer_cancel);
  */
 ktime_t hrtimer_get_remaining(const struct hrtimer *timer)
 {
-       struct hrtimer_clock_base *base;
        unsigned long flags;
        ktime_t rem;
 
-       base = lock_hrtimer_base(timer, &flags);
+       lock_hrtimer_base(timer, &flags);
        rem = hrtimer_expires_remaining(timer);
        unlock_hrtimer_base(timer, &flags);
 
index ab661eb..134f7ed 100644 (file)
@@ -1313,7 +1313,7 @@ static struct sched_group *
 find_idlest_group(struct sched_domain *sd, struct task_struct *p,
                  int this_cpu, int load_idx)
 {
-       struct sched_group *idlest = NULL, *this = NULL, *group = sd->groups;
+       struct sched_group *idlest = NULL, *group = sd->groups;
        unsigned long min_load = ULONG_MAX, this_load = 0;
        int imbalance = 100 + (sd->imbalance_pct-100)/2;
 
@@ -1348,7 +1348,6 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p,
 
                if (local_group) {
                        this_load = avg_load;
-                       this = group;
                } else if (avg_load < min_load) {
                        min_load = avg_load;
                        idlest = group;
index ca38e8e..f88552c 100644 (file)
@@ -1713,10 +1713,7 @@ static __init int sysctl_init(void)
 {
        sysctl_set_parent(NULL, root_table);
 #ifdef CONFIG_SYSCTL_SYSCALL_CHECK
-       {
-               int err;
-               err = sysctl_check_table(current->nsproxy, root_table);
-       }
+       sysctl_check_table(current->nsproxy, root_table);
 #endif
        return 0;
 }
index 19cccc3..492197e 100644 (file)
@@ -2985,13 +2985,11 @@ static void rb_advance_reader(struct ring_buffer_per_cpu *cpu_buffer)
 
 static void rb_advance_iter(struct ring_buffer_iter *iter)
 {
-       struct ring_buffer *buffer;
        struct ring_buffer_per_cpu *cpu_buffer;
        struct ring_buffer_event *event;
        unsigned length;
 
        cpu_buffer = iter->cpu_buffer;
-       buffer = cpu_buffer->buffer;
 
        /*
         * Check if we are at the end of the buffer.