![]() Marin Mitov points out that delay_tsc() can misbehave if it is preempted and rescheduled on a different CPU which has a skewed TSC. Fix it by disabling preemption. (I assume that the worst-case behaviour here is a stall of 2^32 cycles) Cc: Andi Kleen <ak@suse.de> Cc: Marin Mitov <mitov@issp.bas.bg> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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bitops_32.c | ||
bitops_64.c | ||
bitstr_64.c | ||
checksum_32.S | ||
clear_page_64.S | ||
copy_page_64.S | ||
copy_user_64.S | ||
copy_user_nocache_64.S | ||
csum-copy_64.S | ||
csum-partial_64.c | ||
csum-wrappers_64.c | ||
delay_32.c | ||
delay_64.c | ||
getuser_32.S | ||
getuser_64.S | ||
io_64.c | ||
iomap_copy_64.S | ||
Makefile | ||
Makefile_32 | ||
Makefile_64 | ||
memcpy_32.c | ||
memcpy_64.S | ||
memmove_64.c | ||
memset_64.S | ||
mmx_32.c | ||
msr-on-cpu.c | ||
putuser_32.S | ||
putuser_64.S | ||
rwlock_64.S | ||
semaphore_32.S | ||
string_32.c | ||
strstr_32.c | ||
thunk_64.S | ||
usercopy_32.c | ||
usercopy_64.c |