From: stephane eranian <eranian@hpl.hp.com>
Date: Mon, 18 Apr 2005 18:42:00 +0000 (-0700)
Subject: [IA64] another perfmon fix (take2)
X-Git-Tag: v2.6.12-rc4~117^2~5^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5a70b75d93b26e14c0c5e759099d602a480b9e2;p=pandora-kernel.git

[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>
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