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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arcksyms.c	ARC: Build system: Makefiles, Kconfig, Linker script	2013-02-11 20:00:25 +05:30
asm-offsets.c	ARC: [Review] Preparing to fix incorrect syscall restarts due to signals	2013-02-15 23:15:49 +05:30
clk.c	ARC: Timers/counters/delay management	2013-02-11 20:00:39 +05:30
ctx_sw_asm.S	ARC: Process-creation/scheduling/idle-loop	2013-02-11 20:00:38 +05:30
ctx_sw.c	ARC: Process-creation/scheduling/idle-loop	2013-02-11 20:00:38 +05:30
entry.S	ARC: [Review] Preparing to fix incorrect syscall restarts due to signals	2013-02-15 23:15:49 +05:30
fpu.c	ARC: Process-creation/scheduling/idle-loop	2013-02-11 20:00:38 +05:30
irq.c	ARC: Interrupt Handling	2013-02-11 20:00:37 +05:30
Makefile	ARC: Build system: Makefiles, Kconfig, Linker script	2013-02-11 20:00:25 +05:30
process.c	ARC: Process-creation/scheduling/idle-loop	2013-02-11 20:00:38 +05:30
signal.c	ARC: Signal handling	2013-02-15 23:03:30 +05:30
sys.c	ARC: Syscall support (no-legacy-syscall ABI)	2013-02-11 20:00:38 +05:30
time.c	ARC: Timers/counters/delay management	2013-02-11 20:00:39 +05:30
traps.c	ARC: Non-MMU Exception Handling	2013-02-11 20:00:37 +05:30
vmlinux.lds.S	ARC: Build system: Makefiles, Kconfig, Linker script	2013-02-11 20:00:25 +05:30