diff options
Diffstat (limited to 'drivers/oprofile/buffer_sync.c')
| -rw-r--r-- | drivers/oprofile/buffer_sync.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c index 908202afbae9..d969bb13a252 100644 --- a/drivers/oprofile/buffer_sync.c +++ b/drivers/oprofile/buffer_sync.c @@ -1,11 +1,12 @@ /** * @file buffer_sync.c * - * @remark Copyright 2002 OProfile authors + * @remark Copyright 2002-2009 OProfile authors * @remark Read the file COPYING * * @author John Levon <levon@movementarian.org> * @author Barry Kasindorf + * @author Robert Richter <robert.richter@amd.com> * * This is the core of the buffer management. Each * CPU buffer is processed and entered into the @@ -529,6 +530,7 @@ void sync_buffer(int cpu) sync_buffer_state state = sb_buffer_start; unsigned int i; unsigned long available; + unsigned long flags; struct op_entry entry; struct op_sample *sample; @@ -545,38 +547,34 @@ void sync_buffer(int cpu) break; if (is_code(sample->eip)) { - switch (sample->event) { - case 0: - case CPU_IS_KERNEL: + flags = sample->event; + if (flags & TRACE_BEGIN) { + state = sb_bt_start; + add_trace_begin(); + } + if (flags & KERNEL_CTX_SWITCH) { /* kernel/userspace switch */ - in_kernel = sample->event; + in_kernel = flags & IS_KERNEL; if (state == sb_buffer_start) state = sb_sample_start; - add_kernel_ctx_switch(sample->event); - break; - case CPU_TRACE_BEGIN: - state = sb_bt_start; - add_trace_begin(); - break; -#ifdef CONFIG_OPROFILE_IBS - case IBS_FETCH_BEGIN: - add_ibs_begin(cpu, IBS_FETCH_CODE, mm); - break; - case IBS_OP_BEGIN: - add_ibs_begin(cpu, IBS_OP_CODE, mm); - break; -#endif - default: + add_kernel_ctx_switch(flags & IS_KERNEL); + } + if (flags & USER_CTX_SWITCH) { /* userspace context switch */ oldmm = mm; - new = (struct task_struct *)sample->event; + new = (struct task_struct *)sample->data[0]; release_mm(oldmm); mm = take_tasks_mm(new); if (mm != oldmm) cookie = get_exec_dcookie(mm); add_user_ctx_switch(new, cookie); - break; } +#ifdef CONFIG_OPROFILE_IBS + if (flags & IBS_FETCH_BEGIN) + add_ibs_begin(cpu, IBS_FETCH_CODE, mm); + if (flags & IBS_OP_BEGIN) + add_ibs_begin(cpu, IBS_OP_CODE, mm); +#endif continue; } |