From 7d468abee0f1a7e918b5e2f23120436a54ba9f33 Mon Sep 17 00:00:00 2001 From: Robert Richter Date: Thu, 27 Nov 2008 10:57:09 +0100 Subject: oprofile: adding cpu buffer r/w access functions This is in preparation for changes in the cpu buffer implementation. Signed-off-by: Robert Richter --- drivers/oprofile/cpu_buffer.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/oprofile/cpu_buffer.h') diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h index d3cc26264db5..08706991fdd2 100644 --- a/drivers/oprofile/cpu_buffer.h +++ b/drivers/oprofile/cpu_buffer.h @@ -52,6 +52,18 @@ DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer); void cpu_buffer_reset(struct oprofile_cpu_buffer *cpu_buf); +static inline +struct op_sample *cpu_buffer_write_entry(struct oprofile_cpu_buffer *cpu_buf) +{ + return &cpu_buf->buffer[cpu_buf->head_pos]; +} + +static inline +struct op_sample *cpu_buffer_read_entry(struct oprofile_cpu_buffer *cpu_buf) +{ + return &cpu_buf->buffer[cpu_buf->tail_pos]; +} + /* transient events for the CPU buffer -> event buffer */ #define CPU_IS_KERNEL 1 #define CPU_TRACE_BEGIN 2 -- cgit v1.2.3