mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 08:17:17 +07:00
82500a810e
Set the proper bit in the configuration register when contextID tracing has been requested by user space. That way PE_CONTEXT elements are generated by the tracers when a process is installed on a CPU. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Tested-by: Leo Yan <leo.yan@linaro.org> Tested-by: Robert Walker <robert.walker@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
37 lines
989 B
C
37 lines
989 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright(C) 2015 Linaro Limited. All rights reserved.
|
|
* Author: Mathieu Poirier <mathieu.poirier@linaro.org>
|
|
*/
|
|
|
|
#ifndef _LINUX_CORESIGHT_PMU_H
|
|
#define _LINUX_CORESIGHT_PMU_H
|
|
|
|
#define CORESIGHT_ETM_PMU_NAME "cs_etm"
|
|
#define CORESIGHT_ETM_PMU_SEED 0x10
|
|
|
|
/* ETMv3.5/PTM's ETMCR config bit */
|
|
#define ETM_OPT_CYCACC 12
|
|
#define ETM_OPT_CTXTID 14
|
|
#define ETM_OPT_TS 28
|
|
#define ETM_OPT_RETSTK 29
|
|
|
|
/* ETMv4 CONFIGR programming bits for the ETM OPTs */
|
|
#define ETM4_CFG_BIT_CYCACC 4
|
|
#define ETM4_CFG_BIT_CTXTID 6
|
|
#define ETM4_CFG_BIT_TS 11
|
|
#define ETM4_CFG_BIT_RETSTK 12
|
|
|
|
static inline int coresight_get_trace_id(int cpu)
|
|
{
|
|
/*
|
|
* A trace ID of value 0 is invalid, so let's start at some
|
|
* random value that fits in 7 bits and go from there. Since
|
|
* the common convention is to have data trace IDs be I(N) + 1,
|
|
* set instruction trace IDs as a function of the CPU number.
|
|
*/
|
|
return (CORESIGHT_ETM_PMU_SEED + (cpu * 2));
|
|
}
|
|
|
|
#endif
|