2 Commits

Author	SHA1	Message	Date
Joerg Roedel	6b37f5a20c	[PATCH] x86-64: fix cpu MHz reporting on constant_tsc cpus ... This patch fixes the reporting of cpu_mhz in /proc/cpuinfo on CPUs with a constant TSC rate and a kernel with disabled cpufreq. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Andi Kleen <ak@suse.de> arch/x86_64/kernel/apic.c | 2 - arch/x86_64/kernel/time.c | 58 +++++++++++++++++++++++++++++++++++++++--- arch/x86_64/kernel/tsc.c | 12 +++++--- arch/x86_64/kernel/tsc_sync.c | 2 - include/asm-x86_64/proto.h | 1 5 files changed, 65 insertions(+), 10 deletions(-)	2007-05-02 19:27:06 +02:00
Ingo Molnar	95492e4646	[PATCH] x86: rewrite SMP TSC sync code ... make the TSC synchronization code more robust, and unify it between x86_64 and i386. The biggest change is the removal of the 'fix up TSCs' code on x86_64 and i386, in some rare cases it was /causing/ time-warps on SMP systems. The new code only checks for TSC asynchronity - and if it can prove a time-warp (if it can observe the TSC going backwards when going from one CPU to another within a critical section), then the TSC clock-source is turned off. The TSC synchronization-checking code also got moved into a separate file. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2007-02-16 08:13:57 -08:00