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arch/tile: bug fix: exec'ed task thought it was still single-stepping

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To handle single-step, tile mmap's a page of memory in the process
space for each thread and uses it to construct a version of the
instruction that we want to single step.  If the process exec's,
though, we lose that mapping, and the kernel needs to be aware that
it will need to recreate it if the exec'ed process than tries to
single-step as well.

Also correct some int32_t to s32 for better kernel style.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2011-02-28 13:08:32 -05:00
parent 2cb8240071
commit 04f7a3f12e
3 changed files with 26 additions and 2 deletions
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4
arch/tile/kernel/process.c
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@ -574,6 +574,8 @@ SYSCALL_DEFINE4(execve, const char __user *, path,
goto out;
error = do_execve(filename, argv, envp, regs);
putname(filename);
if (error == 0)
single_step_execve();
out:
return error;
}
@ -593,6 +595,8 @@ long compat_sys_execve(const char __user *path,
goto out;
error = compat_do_execve(filename, argv, envp, regs);
putname(filename);
if (error == 0)
single_step_execve();
out:
return error;
}