diff options
Diffstat (limited to 'arch/x86/include/asm/intel_ds.h')
| -rw-r--r-- | arch/x86/include/asm/intel_ds.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/include/asm/intel_ds.h b/arch/x86/include/asm/intel_ds.h index 5dbeac48a5b9..695f87efbeb8 100644 --- a/arch/x86/include/asm/intel_ds.h +++ b/arch/x86/include/asm/intel_ds.h @@ -4,7 +4,15 @@ #include <linux/percpu-defs.h> #define BTS_BUFFER_SIZE (PAGE_SIZE << 4) -#define PEBS_BUFFER_SIZE (PAGE_SIZE << 4) +#define PEBS_BUFFER_SHIFT 4 +#define PEBS_BUFFER_SIZE (PAGE_SIZE << PEBS_BUFFER_SHIFT) + +/* + * The largest PEBS record could consume a page, ensure + * a record at least can be written after triggering PMI. + */ +#define ARCH_PEBS_THRESH_MULTI ((PEBS_BUFFER_SIZE - PAGE_SIZE) >> PEBS_BUFFER_SHIFT) +#define ARCH_PEBS_THRESH_SINGLE 1 /* The maximal number of PEBS events: */ #define MAX_PEBS_EVENTS_FMT4 8 |