| Date | Mon, 19 Aug 2019 22:06:50 +0200 | From | Ingo Molnar <> | Subject | Re: [patch 38/44] posix-cpu-timers: Respect INFINITY for hard RTTIME limit |
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* Thomas Gleixner <tglx@linutronix.de> wrote:
> The RTIME limit expiry code does not check the hard RTTIME limit for > INFINITY, i.e. being disabled. Add it. > > Signed-off-by: Thomas Gleixner <tglx@linutronix.de> > --- > kernel/time/posix-cpu-timers.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > --- a/kernel/time/posix-cpu-timers.c > +++ b/kernel/time/posix-cpu-timers.c > @@ -905,7 +905,7 @@ static void check_process_timers(struct > u64 softns, ptime = samples[CPUCLOCK_PROF]; > unsigned long psecs = div_u64(ptime, NSEC_PER_SEC); > > - if (psecs >= hard) { > + if (hard != RLIM_INFINITY && psecs >= hard) { > /* > * At the hard limit, we just die. > * No need to calculate anything else now.
Might make sense to mark this as a possible ABI change in the changelog: if some weird code learned to rely on this (arguably broken) behavior then the bug turned into an ABI.
Thanks,
Ingo
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