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authorTkhai Kirill <tkhai@yandex.ru>2012-06-29 02:55:25 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-26 16:49:40 -0700
commit427f23cb3abc21c3784df8ae907c4c3a31d885d1 (patch)
tree6e903641bbc8f40c031bc2cfa32e2c319c77bae2 /arch/sparc/kernel/process_32.c
parenta0ce3ba03f6bd49459c6c40a03faf10b23831c1b (diff)
downloadop-kernel-dev-427f23cb3abc21c3784df8ae907c4c3a31d885d1.zip
op-kernel-dev-427f23cb3abc21c3784df8ae907c4c3a31d885d1.tar.gz
sparc32, copy_thread: Clear TIF_USEDFPU flag of created task instead of current
FPU state is saved into task_struct of created task. Current task continues use of the state, so it needs TIF_USEDFPU flag is not cleared. Created task receives fresh FPU and cleared TIF_USEFPU flag is required for it. Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/process_32.c')
-rw-r--r--arch/sparc/kernel/process_32.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index cb36e82..14006d8 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -333,9 +333,6 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
put_psr(get_psr() | PSR_EF);
fpsave(&p->thread.float_regs[0], &p->thread.fsr,
&p->thread.fpqueue[0], &p->thread.fpqdepth);
-#ifdef CONFIG_SMP
- clear_thread_flag(TIF_USEDFPU);
-#endif
}
/*
@@ -413,6 +410,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
#ifdef CONFIG_SMP
/* FPU must be disabled on SMP. */
childregs->psr &= ~PSR_EF;
+ clear_tsk_thread_flag(p, TIF_USEDFPU);
#endif
/* Set the return value for the child. */
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