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authorRalf Baechle <ralf@linux-mips.org>2006-08-08 03:47:01 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-09-27 13:37:33 +0100
commit13fdd31abec5f48cf97693bd14d2e11e0779b4ca (patch)
tree66eff81e11545ef5259812a1a83dd75a8d520567 /include
parent847b9dfccad7dd34b2e44b1c6ceeb1c4cb88084a (diff)
[MIPS] Avoid double signal restarting.
In entry.S resume_userspace ... jal do_notify_resume form a loop through which the kernel will iterate as long as work is pending. If we iterate through this loop more than once with no signal pending for at least one but the last iteration we will take do the syscall restarting multiple times resulting in a syscall return prior to the the syscall instruction in userspace. This may happen when debugging a multithreaded program. Debugging and original fix by Maciej; extended to other ABIs by me. Signed-off-by: Maciej W. Rozycki <macro@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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