Vineet Gupta 5c39c0ab5e ARC: [Review] Preparing to fix incorrect syscall restarts due to signals ... To avoid multiple syscall restarts (multiple signals) or no restart at all (sigreturn), we need just an extra bit of state "literally 1 bit" in struct pt_regs. orig_r8 is the best place to do this, however given the way it is encoded currently, we can't add anything simplistically. Current orig_r8: * syscalls -> 1 to NR_SYSCALLS * Exceptions -> NR_SYSCALLS + 1 * Break-point-> NR_SYSCALLS + 2 In new scheme it is a bit-field * lower short word contains the exact event type (and a new bit to represent restart semantics : if syscall was already / can't be restarted) * upper short word optionally containing the syscall num - needed by likes of tracehooks etc This patch only changes how orig_r8 is organised and nothing should change behaviourily. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Al Viro <viro@ZenIV.linux.org.uk>		2013-02-15 23:15:49 +05:30
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boot
include/asm	ARC: [Review] Preparing to fix incorrect syscall restarts due to signals	2013-02-15 23:15:49 +05:30
kernel	ARC: [Review] Preparing to fix incorrect syscall restarts due to signals	2013-02-15 23:15:49 +05:30
lib	ARC: String library	2013-02-11 20:00:35 +05:30
mm	ARC: uaccess friends	2013-02-11 20:00:31 +05:30
plat-arcfpga	ARC: Interrupt Handling	2013-02-11 20:00:37 +05:30
Kbuild
Kconfig	ARC: Signal handling	2013-02-15 23:03:30 +05:30
Kconfig.debug
Makefile