cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

hv-common.h (1476B)


      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef LINUX_POWERPC_PERF_HV_COMMON_H_
      3#define LINUX_POWERPC_PERF_HV_COMMON_H_
      4
      5#include <linux/perf_event.h>
      6#include <linux/types.h>
      7
      8struct hv_perf_caps {
      9	u16 version;
     10	u16 collect_privileged:1,
     11	    ga:1,
     12	    expanded:1,
     13	    lab:1,
     14	    unused:12;
     15};
     16
     17unsigned long hv_perf_caps_get(struct hv_perf_caps *caps);
     18
     19
     20#define EVENT_DEFINE_RANGE_FORMAT(name, attr_var, bit_start, bit_end)	\
     21PMU_FORMAT_ATTR(name, #attr_var ":" #bit_start "-" #bit_end);		\
     22EVENT_DEFINE_RANGE(name, attr_var, bit_start, bit_end)
     23
     24/*
     25 * The EVENT_DEFINE_RANGE_FORMAT() macro above includes helper functions
     26 * for the fields (eg: event_get_starting_index()). For some fields we
     27 * need the bit-range definition, but no the helper functions. Define a
     28 * lite version of the above macro without the helpers and silence
     29 * compiler warnings unused static functions.
     30 */
     31#define EVENT_DEFINE_RANGE_FORMAT_LITE(name, attr_var, bit_start, bit_end) \
     32PMU_FORMAT_ATTR(name, #attr_var ":" #bit_start "-" #bit_end);
     33
     34#define EVENT_DEFINE_RANGE(name, attr_var, bit_start, bit_end)	\
     35static u64 event_get_##name##_max(void)					\
     36{									\
     37	BUILD_BUG_ON((bit_start > bit_end)				\
     38		    || (bit_end >= (sizeof(1ull) * 8)));		\
     39	return (((1ull << (bit_end - bit_start)) - 1) << 1) + 1;	\
     40}									\
     41static u64 event_get_##name(struct perf_event *event)			\
     42{									\
     43	return (event->attr.attr_var >> (bit_start)) &			\
     44		event_get_##name##_max();				\
     45}
     46
     47#endif