forked from luck/tmp_suning_uos_patched
af1be5a578
Oleg Nesterov found an interesting deadlock possibility: > sysrq_showregs_othercpus() does smp_call_function(showacpu) > and showacpu() show_stack()->decode_address(). Now suppose that IPI > interrupts the task holding read_lock(tasklist). To fix this, blackfin should not grab the write_ variant of the tasklist lock, read_ one is enough. Suggested-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| boot | ||
| configs | ||
| include | ||
| kernel | ||
| lib | ||
| mach-bf518 | ||
| mach-bf527 | ||
| mach-bf533 | ||
| mach-bf537 | ||
| mach-bf538 | ||
| mach-bf548 | ||
| mach-bf561 | ||
| mach-bf609 | ||
| mach-common | ||
| mm | ||
| oprofile | ||
| Clear_BSD.txt | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||