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authorMikulas Patocka <mpatocka@redhat.com>2014-01-24 16:41:36 -0500
committerThomas Gleixner <tglx@linutronix.de>2014-02-06 16:01:40 +0100
commit80d767d770fd9c697e434fd080c2db7b5c60c6dd (patch)
tree82cd1a6856fd6cc5f931305bb5e8f011d943edd2 /drivers/clocksource
parent38dbfb59d1175ef458d006556061adeaa8751b72 (diff)
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time: Fix overflow when HZ is smaller than 60
When compiling for the IA-64 ski emulator, HZ is set to 32 because the emulation is slow and we don't want to waste too many cycles processing timers. Alpha also has an option to set HZ to 32. This causes integer underflow in kernel/time/jiffies.c: kernel/time/jiffies.c:66:2: warning: large integer implicitly truncated to unsigned type [-Woverflow] .mult = NSEC_PER_JIFFY << JIFFIES_SHIFT, /* details above */ ^ This patch reduces the JIFFIES_SHIFT value to avoid the overflow. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1401241639100.23871@file01.intranet.prod.int.rdu2.redhat.com Cc: stable@vger.kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/clocksource')
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