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| author |   Michael Ellerman <mpe@ellerman.id.au> | 2018-05-07 23:03:55 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-05-10 23:17:43 +1000 |
| commit | 8f2133cc0e1f9718f3e2d39b7587f4d6c9649a54 (patch) | |
| tree | 017f3ee3244ef4d37f248aa4957debb602844e48 /arch/powerpc/platforms/pseries/lpar.c | |
| parent | Revert "powerpc/powernv: Increase memory block size to 1GB on radix" (diff) | |
| download | linux-dev-8f2133cc0e1f9718f3e2d39b7587f4d6c9649a54.tar.xz linux-dev-8f2133cc0e1f9718f3e2d39b7587f4d6c9649a54.zip | |
powerpc/pseries: hcall_exit tracepoint retval should be signed
The hcall_exit() tracepoint has retval defined as unsigned long. That
leads to humours results like:
bash-3686 [009] d..2 854.134094: hcall_entry: opcode=24
bash-3686 [009] d..2 854.134095: hcall_exit: opcode=24 retval=18446744073709551609
It's normal for some hcalls to return negative values, displaying them
as unsigned isn't very helpful. So change it to signed.
bash-3711 [001] d..2 471.691008: hcall_entry: opcode=24
bash-3711 [001] d..2 471.691008: hcall_exit: opcode=24 retval=-7
Which can be more easily compared to H_NOT_FOUND in hvcall.h
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Diffstat (limited to 'arch/powerpc/platforms/pseries/lpar.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index adb996ed51e1..5a392e40f3d2 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -902,8 +902,7 @@ out: local_irq_restore(flags); } -void __trace_hcall_exit(long opcode, unsigned long retval, - unsigned long *retbuf) +void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf) { unsigned long flags; unsigned int *depth; |