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oprofile: don't call arch exit code from init code on failure

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oprofile_init calls oprofile_arch_init to initialise the architecture-specific
backend code. If this backend code returns failure, oprofile_arch_exit is
called immediately, making it difficult to allocate and free resources
correctly.

This patch removes the oprofile_arch_exit call from oprofile_init,
meaning that all architectures must ensure that oprofile_arch_init
cleans up any mess it's made before returning an error. As far as
I can tell, this only affects the code for ARM.

Cc: Robert Richter <robert.richter@amd.com>
Cc: Matt Fleming <matt@console-pimps.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
This commit is contained in:
Will Deacon 2010-08-29 14:51:59 -04:00 committed by Robert Richter
parent 2bfc96a127
commit 979048e1f2
1 changed files with 2 additions and 9 deletions
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11
drivers/oprofile/oprof.c
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@ -257,16 +257,9 @@ static int __init oprofile_init(void)
printk(KERN_INFO "oprofile: using timer interrupt.\n");
err = oprofile_timer_init(&oprofile_ops);
if (err)
goto out_arch;
return err;
}
err = oprofilefs_register();
if (err)
goto out_arch;
return 0;
out_arch:
oprofile_arch_exit();
return err;
return oprofilefs_register();
}