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| author | Nathan Lynch <nathanl@linux.ibm.com> | 2023-02-10 19:41:57 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-02-13 12:35:02 +0100 |
| commit | 77f85f69a97ac5f24537261a893436926c3e0cdc (patch) | |
| tree | cfa3f3d5b5067d7f838259989d0e817b1059d821 /arch/powerpc | |
| parent | powerpc/rtas: improve function information lookups (diff) | |
| download | linux-77f85f69a97ac5f24537261a893436926c3e0cdc.tar.xz linux-77f85f69a97ac5f24537261a893436926c3e0cdc.zip | |
powerpc/rtas: strengthen do_enter_rtas() type safety, drop inline
Make do_enter_rtas() take a pointer to struct rtas_args and do the
__pa() conversion in one place instead of leaving it to callers. This
also makes it possible to introduce enter/exit tracepoints that access
the rtas_args struct fields.
There's no apparent reason to force inlining of do_enter_rtas()
either, and it seems to bloat the code a bit. Let the compiler decide.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-9-26929c8cce78@linux.ibm.com
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 3c7151f4f2ba..d2622b997b68 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -523,7 +523,7 @@ static const struct rtas_function *rtas_token_to_function(s32 token) /* This is here deliberately so it's only used in this file */ void enter_rtas(unsigned long); -static inline void do_enter_rtas(unsigned long args) +static void do_enter_rtas(struct rtas_args *args) { unsigned long msr; @@ -538,7 +538,7 @@ static inline void do_enter_rtas(unsigned long args) hard_irq_disable(); /* Ensure MSR[EE] is disabled on PPC64 */ - enter_rtas(args); + enter_rtas(__pa(args)); srr_regs_clobbered(); /* rtas uses SRRs, invalidate */ } @@ -892,7 +892,7 @@ static char *__fetch_rtas_last_error(char *altbuf) save_args = rtas_args; rtas_args = err_args; - do_enter_rtas(__pa(&rtas_args)); + do_enter_rtas(&rtas_args); err_args = rtas_args; rtas_args = save_args; @@ -939,7 +939,7 @@ va_rtas_call_unlocked(struct rtas_args *args, int token, int nargs, int nret, for (i = 0; i < nret; ++i) args->rets[i] = 0; - do_enter_rtas(__pa(args)); + do_enter_rtas(args); } void rtas_call_unlocked(struct rtas_args *args, int token, int nargs, int nret, ...) @@ -1757,7 +1757,7 @@ SYSCALL_DEFINE1(rtas, struct rtas_args __user *, uargs) raw_spin_lock_irqsave(&rtas_lock, flags); rtas_args = args; - do_enter_rtas(__pa(&rtas_args)); + do_enter_rtas(&rtas_args); args = rtas_args; /* A -1 return code indicates that the last command couldn't |