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Make error messages for failure to change scheduling policies more descriptive

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Out of the box on most distros, both of these steps will fail (renicing
requires permission which may need adjustment to limits.conf, and the
upstream kernel does not support SCHED_ISO).

Explicitly state this in the error messages to hopefully reduce user
confusion as to why these might be failing.
This commit is contained in:
Alex Smith 2018-08-04 10:51:42 +01:00 committed by Alex Smith
parent cdbe0db9a7
commit 442475a78b
1 changed files with 2 additions and 2 deletions
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4
daemon/gamemode.c
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@ -198,7 +198,7 @@ static void game_mode_apply_scheduler(GameModeContext *self, pid_t client)
if (getpriority(PRIO_PROCESS, (id_t)client) != 0) {
LOG_ERROR("Client [%d] already reniced, ignoring.\n", client);
} else if (setpriority(PRIO_PROCESS, (id_t)client, (int)renice)) {
LOG_ERROR("Renicing client [%d] failed with error %d, ignoring.\n", client, errno);
LOG_ERROR("Renicing client [%d] failed with error %d, ignoring (your user may not have permission to do this).\n", client, errno);
}
/*
@ -221,7 +221,7 @@ static void game_mode_apply_scheduler(GameModeContext *self, pid_t client)
if (!(strcmp(softrealtime, "off") == 0) && (enable_softrealtime)) {
const struct sched_param p = { .sched_priority = 0 };
if (sched_setscheduler(client, SCHED_ISO, &p)) {
LOG_ERROR("Setting client [%d] to SCHED_ISO failed with error %d, ignoring.\n",
LOG_ERROR("Setting client [%d] to SCHED_ISO failed with error %d, ignoring (your kernel may not support this).\n",
client,
errno);
}