3  * Branch Record Buffer Extension Driver.
22  * BRBTS_EL1 is currently not used for branch stack implementation
31  * BRBE buffer is arranged as multiple banks of 32 branch record
32  * entries each. An individual branch record in a given bank could
220 	/* Ensure all branch records are invalidated after this point */  in brbe_invalidate()
269 	 * between setting BANK and accessing branch records.  in select_brbe_bank()
287  * Generic perf branch filters supported on BRBE
289  * New branch filters need to be evaluated whether they could be supported on
290  * BRBE. This ensures that such branch filters would not just be accepted, to
323  * BRBE supports the following functional branch type filters while
324  * generating branch records. These branch filters can be enabled,
328  * BRBFCR_EL1_CONDDIR  - Conditional direct branch
331  * BRBFCR_EL1_INDIRECT - Indirect branch
332  * BRBFCR_EL1_DIRECT   - Direct branch
369  * branch records.
371  * BRBCR_ELx_E0BRE - EL0 branch records
372  * BRBCR_ELx_ExBRE - EL1/EL2 branch records
374  * BRBE also supports the following additional functional branch type
375  * filters while generating branch records.
412 	 * for the captured branch record, creating source only  in branch_type_to_brbcr()
435 	 * Ensure both perf branch filter allowed and exclude  in brbe_branch_attr_valid()
441 		pr_debug("requested branch filter not supported 0x%llx\n", branch_type);  in brbe_branch_attr_valid()
445 	/* Ensure at least 1 branch type is enabled */  in brbe_branch_attr_valid()
447 		pr_debug("no branch type enabled 0x%llx\n", branch_type);  in brbe_branch_attr_valid()
460 		pr_debug("branch filter in hypervisor or guest only not supported 0x%llx\n", branch_type);  in brbe_branch_attr_valid()
506 	 * Merge the permitted branch filters of all events.  in brbe_enable()
519 	 * controls freezing the branch records on counter overflow rather than  in brbe_enable()
592 		pr_warn_once("%d - unknown branch privilege captured\n", brbe_el);  in brbinf_get_perf_priv()
625 		/* Mispredict info is available for source only and complete branch records. */  in perf_entry_from_brbe_regset()
641 	 * Branch privilege level is available for target only and complete  in perf_entry_from_brbe_regset()
642 	 * branch records.  in perf_entry_from_brbe_regset()