diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/trace/beauty/sched_policy.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/tools/perf/trace/beauty/sched_policy.c b/tools/perf/trace/beauty/sched_policy.c new file mode 100644 index 000000000..68aa59eee --- /dev/null +++ b/tools/perf/trace/beauty/sched_policy.c @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: LGPL-2.1 +#include <sched.h> + +/* + * Not defined anywhere else, probably, just to make sure we + * catch future flags + */ +#define SCHED_POLICY_MASK 0xff + +#ifndef SCHED_DEADLINE +#define SCHED_DEADLINE 6 +#endif +#ifndef SCHED_RESET_ON_FORK +#define SCHED_RESET_ON_FORK 0x40000000 +#endif + +static size_t syscall_arg__scnprintf_sched_policy(char *bf, size_t size, + struct syscall_arg *arg) +{ + bool show_prefix = arg->show_string_prefix; + const char *prefix = "SCHED_"; + const char *policies[] = { + "NORMAL", "FIFO", "RR", "BATCH", "ISO", "IDLE", "DEADLINE", + }; + size_t printed; + int policy = arg->val, + flags = policy & ~SCHED_POLICY_MASK; + + policy &= SCHED_POLICY_MASK; + if (policy <= SCHED_DEADLINE) + printed = scnprintf(bf, size, "%s%s", show_prefix ? prefix : "", policies[policy]); + else + printed = scnprintf(bf, size, "%#x", policy); + +#define P_POLICY_FLAG(n) \ + if (flags & SCHED_##n) { \ + printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "", #n); \ + flags &= ~SCHED_##n; \ + } + + P_POLICY_FLAG(RESET_ON_FORK); +#undef P_POLICY_FLAG + + if (flags) + printed += scnprintf(bf + printed, size - printed, "|%#x", flags); + + return printed; +} + +#define SCA_SCHED_POLICY syscall_arg__scnprintf_sched_policy |