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| author | Ingo Molnar <mingo@elte.hu> | 2008-11-11 11:18:14 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-11 11:12:18 +0100 |
| commit | 867f7fb3ebb831970847b179e7df5a9ab10da16d (patch) | |
| tree | e4a7b3807955af5d9c6e4c00376d44b2c3b3b5ea | |
| parent | tracing, x86: clean up FUNCTION_RET_TRACER Kconfig (diff) | |
| download | linux-867f7fb3ebb831970847b179e7df5a9ab10da16d.tar.xz linux-867f7fb3ebb831970847b179e7df5a9ab10da16d.zip | |
tracing, x86: function return tracer, fix assembly constraints
fix:
arch/x86/kernel/ftrace.c: Assembler messages:
arch/x86/kernel/ftrace.c:140: Error: missing ')'
arch/x86/kernel/ftrace.c:140: Error: junk `(%ebp))' after expression
arch/x86/kernel/ftrace.c:141: Error: missing ')'
arch/x86/kernel/ftrace.c:141: Error: junk `(%ebp))' after expression
the [parent_replaced] is used in an =rm fashion, so that constraint
is correct in isolation - but [parent_old] aliases register %0 and uses
it in an addressing mode that is only valid with registers - so change
the constraint from =rm to =r.
This fixes the build failure.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index d68033bba223..9b2325a4d53c 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -151,7 +151,7 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr) " .long 2b, 3b\n" ".previous\n" - : [parent_replaced] "=rm" (parent), [old] "=r" (old), + : [parent_replaced] "=r" (parent), [old] "=r" (old), [faulted] "=r" (faulted) : [parent_old] "0" (parent), [return_hooker] "r" (return_hooker) : "memory" |