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| author |   Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2006-03-31 02:30:24 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:18:52 -0800 |
| commit | 54d8d3b5a0ce1cdbad1d3154c9ea9732d394e9c7 (patch) | |
| tree | 129a29ab92fba7dc99229c87a38fe8df3ade7b15 /arch/um/sys-i386/ptrace.c | |
| parent | [PATCH] uml: tls support: hack to make it compile on any host (diff) | |
| download | linux-dev-54d8d3b5a0ce1cdbad1d3154c9ea9732d394e9c7.tar.xz linux-dev-54d8d3b5a0ce1cdbad1d3154c9ea9732d394e9c7.zip | |
[PATCH] uml: add arch_switch_to for newly forked thread
Newly forked threads have no arch_switch_to_skas() called before their first
run, because when schedule() switches to them they're resumed in the body of
thread_wait() inside fork_handler() rather than in switch_threads() in
switch_to_skas(). Compensate this missing call.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/sys-i386/ptrace.c')
| -rw-r--r-- | arch/um/sys-i386/ptrace.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c index 6a23cc6947c3..6028bc7cc01b 100644 --- a/arch/um/sys-i386/ptrace.c +++ b/arch/um/sys-i386/ptrace.c @@ -23,7 +23,14 @@ void arch_switch_to_tt(struct task_struct *from, struct task_struct *to) void arch_switch_to_skas(struct task_struct *from, struct task_struct *to) { - arch_switch_tls_skas(from, to); + int err = arch_switch_tls_skas(from, to); + if (!err) + return; + + if (err != -EINVAL) + printk(KERN_WARNING "arch_switch_tls_skas failed, errno %d, not EINVAL\n", -err); + else + printk(KERN_WARNING "arch_switch_tls_skas failed, errno = EINVAL\n"); } int is_syscall(unsigned long addr) |