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Add SUPPRESS_LOG env to control the log outputs #332

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Add SUPPRESS_LOG env to control the log outputs #332

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15 changes: 10 additions & 5 deletions activate.c
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ static void activate_mapping(struct irq_info *info, void *data __attribute__((un
FILE *file;
int errsave, ret;
cpumask_t applied_mask;
char *env = getenv("SUPPRESS_LOG");

/*
* only activate mappings for irqs that have moved
Expand Down Expand Up @@ -97,9 +98,11 @@ static void activate_mapping(struct irq_info *info, void *data __attribute__((un
error:
/* Use EPERM as the explaination for EIO */
errsave = (errsave == EIO) ? EPERM : errsave;
log(TO_ALL, LOG_WARNING,
"Cannot change IRQ %i affinity: %s\n",
info->irq, strerror(errsave));
if (!env || strcmp(env, "yes")) {
log(TO_ALL, LOG_WARNING,
"Cannot change IRQ %i affinity: %s\n",
info->irq, strerror(errsave));
}
switch (errsave) {
case EAGAIN: /* Interrupted by signal. */
case EBUSY: /* Affinity change already in progress. */
Expand All @@ -124,8 +127,10 @@ static void activate_mapping(struct irq_info *info, void *data __attribute__((un
/* Any other error is considered permanent. */
info->level = BALANCE_NONE;
info->moved = 0; /* migration impossible, mark as done */
log(TO_ALL, LOG_WARNING, "IRQ %i affinity is now unmanaged\n",
info->irq);
if (!env || strcmp(env, "yes")) {
log(TO_ALL, LOG_WARNING, "IRQ %i affinity is now unmanaged\n",
info->irq);
}
}
}

Expand Down
8 changes: 8 additions & 0 deletions misc/irqbalance.env
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Original file line number Diff line number Diff line change
Expand Up @@ -42,3 +42,11 @@
# page.
#
IRQBALANCE_ARGS=""

#
# SUPPRESS_LOG
# Configuration for suppress the following runtime logs:
# "Cannot change IRQ x affinity: ..." and
# "IRQ x affinity is now unmanaged"
# Uncomment to enable the suppression.
#SUPPRESS_LOG=yes