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| author |   David Howells <dhowells@redhat.com> | 2012-11-02 13:20:42 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2012-11-02 13:20:42 +0000 |
| commit | 1ee6f5669a7eaba0e2f4e0dd0599b56eb8a9a090 (patch) | |
| tree | 89436eb93201d47f625b92bb36a9f9763fae0b7e /arch | |
| parent | FRV: gcc-4.1.2 also inlines weak functions (diff) | |
| download | linux-dev-1ee6f5669a7eaba0e2f4e0dd0599b56eb8a9a090.tar.xz linux-dev-1ee6f5669a7eaba0e2f4e0dd0599b56eb8a9a090.zip | |
FRV: Fix the preemption handling
Fix the preemption handling in FRV code where the PREEMPT_ACTIVE value is
incorrectly loaded into the threadinfo flags rather than the threadinfo
preemption count.
Unfortunately, the code cannot be simply converted to use
preempt_schedule_irq() as is because FRV uses virtual interrupt disablement to
cut down on the cost of actually disabling interrupts and thus
local_irq_enable() doesn't actually enable interrupts.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Al Viro <viro@ZenIV.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/frv/kernel/entry.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S index ee0beb354e4d..d64c52627961 100644 --- a/arch/frv/kernel/entry.S +++ b/arch/frv/kernel/entry.S @@ -1086,7 +1086,7 @@ __entry_preempt_need_resched: beq icc0,#1,__entry_return_direct setlos #PREEMPT_ACTIVE,gr5 - sti gr5,@(gr15,#TI_FLAGS) + sti gr5,@(gr15,#TI_PRE_COUNT) andi gr23,#~PSR_PIL,gr23 movgs gr23,psr |