cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sched_policy.c (1271B)

      1// SPDX-License-Identifier: LGPL-2.1
      2#include <sched.h>
      3
      4/*
      5 * Not defined anywhere else, probably, just to make sure we
      6 * catch future flags
      7 */
      8#define SCHED_POLICY_MASK 0xff
      9
     10#ifndef SCHED_DEADLINE
     11#define SCHED_DEADLINE 6
     12#endif
     13#ifndef SCHED_RESET_ON_FORK
     14#define SCHED_RESET_ON_FORK 0x40000000
     15#endif
     16
     17static size_t syscall_arg__scnprintf_sched_policy(char *bf, size_t size,
     18						  struct syscall_arg *arg)
     19{
     20	bool show_prefix = arg->show_string_prefix;
     21	const char *prefix = "SCHED_";
     22	const char *policies[] = {
     23		"NORMAL", "FIFO", "RR", "BATCH", "ISO", "IDLE", "DEADLINE",
     24	};
     25	size_t printed;
     26	int policy = arg->val,
     27	    flags = policy & ~SCHED_POLICY_MASK;
     28
     29	policy &= SCHED_POLICY_MASK;
     30	if (policy <= SCHED_DEADLINE)
     31		printed = scnprintf(bf, size, "%s%s", show_prefix ? prefix : "", policies[policy]);
     32	else
     33		printed = scnprintf(bf, size, "%#x", policy);
     34
     35#define	P_POLICY_FLAG(n) \
     36	if (flags & SCHED_##n) { \
     37		printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "",  #n); \
     38		flags &= ~SCHED_##n; \
     39	}
     40
     41	P_POLICY_FLAG(RESET_ON_FORK);
     42#undef P_POLICY_FLAG
     43
     44	if (flags)
     45		printed += scnprintf(bf + printed, size - printed, "|%#x", flags);
     46
     47	return printed;
     48}
     49
     50#define SCA_SCHED_POLICY syscall_arg__scnprintf_sched_policy