1 files changed, 0 insertions, 34 deletions

diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index eb280ec96e24..7f7fc958297a 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -145,18 +145,6 @@ void end_cpu_work(void)
         flush_scheduled_work();
 }
 
-/* compute number of available slots in cpu_buffer queue */
-static unsigned long nr_available_slots(struct oprofile_cpu_buffer const *b)
-{
-        unsigned long head = b->head_pos;
-        unsigned long tail = b->tail_pos;
-
-        if (tail > head)
-                return (tail - head) - 1;
-
-        return tail + (b->buffer_size - head) - 1;
-}
-
 static inline void
 add_sample(struct oprofile_cpu_buffer *cpu_buf,
            unsigned long pc, unsigned long event)
@@ -206,11 +194,6 @@ static int log_sample(struct oprofile_cpu_buffer *cpu_buf, unsigned long pc,
                 return 0;
         }
 
-        if (nr_available_slots(cpu_buf) < 3) {
-                cpu_buf->sample_lost_overflow++;
-                return 0;
-        }
-
         is_kernel = !!is_kernel;
 
         task = current;
@@ -233,11 +216,6 @@ static int log_sample(struct oprofile_cpu_buffer *cpu_buf, unsigned long pc,
 
 static int oprofile_begin_trace(struct oprofile_cpu_buffer *cpu_buf)
 {
-        if (nr_available_slots(cpu_buf) < 4) {
-                cpu_buf->sample_lost_overflow++;
-                return 0;
-        }
-
         add_code(cpu_buf, CPU_TRACE_BEGIN);
         cpu_buf->tracing = 1;
         return 1;
@@ -291,12 +269,6 @@ void oprofile_add_ibs_sample(struct pt_regs * const regs,
 
         cpu_buf->sample_received++;
 
-        if (nr_available_slots(cpu_buf) < MAX_IBS_SAMPLE_SIZE) {
-                /* we can't backtrace since we lost the source of this event */
-                cpu_buf->sample_lost_overflow++;
-                return;
-        }
-
         /* notice a switch from user->kernel or vice versa */
         if (cpu_buf->last_is_kernel != is_kernel) {
                 cpu_buf->last_is_kernel = is_kernel;
@@ -342,12 +314,6 @@ void oprofile_add_trace(unsigned long pc)
         if (!cpu_buf->tracing)
                 return;
 
-        if (nr_available_slots(cpu_buf) < 1) {
-                cpu_buf->tracing = 0;
-                cpu_buf->sample_lost_overflow++;
-                return;
-        }
-
         /*
          * broken frame can give an eip with the same value as an
          * escape code, abort the trace if we get it