Re: [PATCH v2] MIPS: tools: Show result for loongson3-llsc-check
On Sat, May 02, 2020 at 11:55:01AM +0800, Tiezhu Yang wrote: > It is better to show the result before loongson3-llsc-check exit, > otherwise we can see nothing if the return status is EXIT_SUCCESS, > it seems confusing. > > E.g. without this patch: > > [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux > [loongson@localhost tools]$ > > With this patch: > > [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux > loongson3-llsc-check returns success > [loongson@localhost tools]$ > > Signed-off-by: Tiezhu Yang > --- > > v2: > - move "returns" after "loongson3-llsc-check" suggested by Sergei > > arch/mips/tools/loongson3-llsc-check.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/mips/tools/loongson3-llsc-check.c > b/arch/mips/tools/loongson3-llsc-check.c > index 0ebddd0..bdbc7b4 100644 > --- a/arch/mips/tools/loongson3-llsc-check.c > +++ b/arch/mips/tools/loongson3-llsc-check.c > @@ -303,5 +303,7 @@ int main(int argc, char *argv[]) > out_close: > close(vmlinux_fd); > out_ret: > + fprintf(stdout, "loongson3-llsc-check returns %s\n", > + status ? "failure" : "success"); > return status; > } > -- > 2.1.0 I've applied your first version, please rebase to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea.[ RFC1925, 2.3 ]
Re: [PATCH v2] MIPS: tools: Show result for loongson3-llsc-check
于 2020年5月2日 GMT+08:00 上午11:55:01, Tiezhu Yang 写到: >It is better to show the result before loongson3-llsc-check exit, >otherwise we can see nothing if the return status is EXIT_SUCCESS, >it seems confusing. > >E.g. without this patch: > >[loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux >[loongson@localhost tools]$ > >With this patch: > >[loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux >loongson3-llsc-check returns success >[loongson@localhost tools]$ > >Signed-off-by: Tiezhu Yang Reviewed-by: Jiaxun Yang Btw, Just learned from Loongson that the latest generation of Loongson-3 doesn't have LLSC errata, also for Loongson 3A R2/R3, use synci instead of sync would give better performance. For performance approach, we'd better develop a method to enable/disable these workarounds at runtime, looks like smp_alternative[1] that was already employed by x86 and arm64 can be ported to MIPS and serves to this target. I'm struggling with device drivers recently so wish somebody can take a look at it. Thanks. [1]: https://lwn.net/Articles/164121/ >--- > >v2: > - move "returns" after "loongson3-llsc-check" suggested by Sergei > > arch/mips/tools/loongson3-llsc-check.c | 2 ++ > 1 file changed, 2 insertions(+) > >diff --git a/arch/mips/tools/loongson3-llsc-check.c >b/arch/mips/tools/loongson3-llsc-check.c >index 0ebddd0..bdbc7b4 100644 >--- a/arch/mips/tools/loongson3-llsc-check.c >+++ b/arch/mips/tools/loongson3-llsc-check.c >@@ -303,5 +303,7 @@ int main(int argc, char *argv[]) > out_close: > close(vmlinux_fd); > out_ret: >+ fprintf(stdout, "loongson3-llsc-check returns %s\n", >+ status ? "failure" : "success"); > return status; > } -- Jiaxun Yang
[PATCH v2] MIPS: tools: Show result for loongson3-llsc-check
It is better to show the result before loongson3-llsc-check exit, otherwise we can see nothing if the return status is EXIT_SUCCESS, it seems confusing. E.g. without this patch: [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux [loongson@localhost tools]$ With this patch: [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux loongson3-llsc-check returns success [loongson@localhost tools]$ Signed-off-by: Tiezhu Yang --- v2: - move "returns" after "loongson3-llsc-check" suggested by Sergei arch/mips/tools/loongson3-llsc-check.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/mips/tools/loongson3-llsc-check.c b/arch/mips/tools/loongson3-llsc-check.c index 0ebddd0..bdbc7b4 100644 --- a/arch/mips/tools/loongson3-llsc-check.c +++ b/arch/mips/tools/loongson3-llsc-check.c @@ -303,5 +303,7 @@ int main(int argc, char *argv[]) out_close: close(vmlinux_fd); out_ret: + fprintf(stdout, "loongson3-llsc-check returns %s\n", + status ? "failure" : "success"); return status; } -- 2.1.0