tree 4cd2f4f47cccb8f59e54433ab642e187cbf5e291
parent 8df5a500a3e97f7811cdce0f553ca1917ccd4220
author stephane eranian <eranian@hpl.hp.com> 1113849720 -0700
committer Tony Luck <tony.luck@intel.com> 1115160478 -0700

[IA64] another perfmon fix (take2)

- pfm_context_load(): change return value from EINVAL to EBUSY
  when context is already loaded.

- pfm_check_task_state(): pass test if context state is MASKED.
  It is safe to give access on PFM_CTX_MASKED because the PMU
  state (PMD) is stable and saved in software state.
  This helps multiplexing programs such as the example given
  in libpfm-3.1.

Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>