[PATCH] sched_clock vs tsc_disable
(Not sure who's code this is, but it's in 2.6.22-rc1-mm1): If you set tsc_disable (eg "notsc" on cmdline), sched-clock.c gives a divide by zero on boot. Signed-off-by: Rusty Russell <[EMAIL PROTECTED]> diff -r fd2ae7085ca2 arch/i386/kernel/sched-clock.c --- a/arch/i386/kernel/sched-clock.cFri May 18 11:04:27 2007 +1000 +++ b/arch/i386/kernel/sched-clock.cFri May 18 12:12:24 2007 +1000 @@ -103,7 +103,7 @@ static void resync_sc_freq(struct sc_dat static void resync_sc_freq(struct sc_data *sc, unsigned int newfreq) { sc->sync_base = jiffies; - if (!cpu_has_tsc) { + if (!cpu_has_tsc || tsc_disable) { sc->unstable = 1; return; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH] sched_clock vs tsc_disable
(Not sure who's code this is, but it's in 2.6.22-rc1-mm1): If you set tsc_disable (eg notsc on cmdline), sched-clock.c gives a divide by zero on boot. Signed-off-by: Rusty Russell [EMAIL PROTECTED] diff -r fd2ae7085ca2 arch/i386/kernel/sched-clock.c --- a/arch/i386/kernel/sched-clock.cFri May 18 11:04:27 2007 +1000 +++ b/arch/i386/kernel/sched-clock.cFri May 18 12:12:24 2007 +1000 @@ -103,7 +103,7 @@ static void resync_sc_freq(struct sc_dat static void resync_sc_freq(struct sc_data *sc, unsigned int newfreq) { sc-sync_base = jiffies; - if (!cpu_has_tsc) { + if (!cpu_has_tsc || tsc_disable) { sc-unstable = 1; return; } - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/