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| author | Markus Metzger <markus.t.metzger@intel.com> | 2009-03-13 10:45:07 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-13 11:57:20 +0100 |
| commit | 8a327f6d1b05f5ce16572b4413a5df1d0e872283 (patch) | |
| tree | 7903a0b4725bea86dba942003d5f6048077271d0 /arch/x86/kernel/ds_selftest.h | |
| parent | bc44fb5f7d3e764ed7698c835a1a0f35aba2eb3d (diff) | |
| download | blackbird-op-linux-8a327f6d1b05f5ce16572b4413a5df1d0e872283.tar.gz blackbird-op-linux-8a327f6d1b05f5ce16572b4413a5df1d0e872283.zip | |
x86, bts: add selftest for BTS
Perform a selftest of branch trace store when a cpu is initialized.
WARN and disable branch trace store support if the selftest fails.
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
LKML-Reference: <20090313104507.A30125@sedona.ch.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/ds_selftest.h')
| -rw-r--r-- | arch/x86/kernel/ds_selftest.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/kernel/ds_selftest.h b/arch/x86/kernel/ds_selftest.h new file mode 100644 index 000000000000..0e6e19d4c7d2 --- /dev/null +++ b/arch/x86/kernel/ds_selftest.h @@ -0,0 +1,15 @@ +/* + * Debug Store support - selftest + * + * + * Copyright (C) 2009 Intel Corporation. + * Markus Metzger <markus.t.metzger@intel.com>, 2009 + */ + +#ifdef CONFIG_X86_DS_SELFTEST +extern int ds_selftest_bts(void); +extern int ds_selftest_pebs(void); +#else +static inline int ds_selftest_bts(void) { return 0; } +static inline int ds_selftest_pebs(void) { return 0; } +#endif /* CONFIG_X86_DS_SELFTEST */ |
