On 11/11/2020 16:15, Arnaldo Carvalho de Melo wrote:
> Em Wed, Nov 11, 2020 at 01:10:51PM -0300, Arnaldo Carvalho de Melo escreveu:
>> Em Wed, Nov 11, 2020 at 03:11:27PM +0800, Leo Yan escreveu:
>>> This is patch set v8 for refactoring Arm SPE trace decoding and dumping.
>>>
>>> This version addresses Andre's comment to pass parameter '&buf_len' at
>>> the last call arm_spe_pkt_snprintf() in the function arm_spe_pkt_desc().
>>>
>>> This patch set is cleanly applied on the top of perf/core branch
>>> with commit 644bf4b0f7ac ("perf jevents: Add test for arch std events").
>>>
>>> I retested this patch set on Hisilicon D06 platform with commands
>>> "perf report -D" and "perf script", compared the decoding results
>>> between with this patch set and without this patch set, "diff" tool
>>> shows the result as expected.
>>
>> With the patches I applied I'm getting:
>>
>> util/arm-spe-decoder/arm-spe-pkt-decoder.c: In function 'arm_spe_pkt_desc':
>> util/arm-spe-decoder/arm-spe-pkt-decoder.c:410:3: error: left shift count >=
>> width of type [-Werror]
>> case 1: ns = !!(packet->payload & NS_FLAG);
>> ^
>> util/arm-spe-decoder/arm-spe-pkt-decoder.c:411:4: error: left shift count >=
>> width of type [-Werror]
>> el = (packet->payload & EL_FLAG) >> 61;
>> ^
>> util/arm-spe-decoder/arm-spe-pkt-decoder.c:411:4: error: left shift count >=
>> width of type [-Werror]
>> util/arm-spe-decoder/arm-spe-pkt-decoder.c:416:3: error: left shift count >=
>> width of type [-Werror]
>> case 3: ns = !!(packet->payload & NS_FLAG);
>> ^
>> CC /tmp/build/perf/util/arm-spe-decoder/arm-spe-decoder.o
>>
>>
>> On:
>>
>> 16 11.70 android-ndk:r12b-arm : FAIL arm-linux-androideabi-gcc
>> (GCC) 4.9.x 20150123 (prerelease)
>> 17 11.32 android-ndk:r15c-arm : FAIL arm-linux-androideabi-gcc
>> (GCC) 4.9.x 20150123 (prerelease)
>>
>> That were building ok before, builds still under way, perhaps its just
>> on these old systems...
>
> [acme@five perf]$ git bisect good
> cc6fa07fb1458cca3741919774eb050976471000 is the first bad commit
> commit cc6fa07fb1458cca3741919774eb050976471000
> Author: Leo Yan <leo....@linaro.org>
> Date: Wed Nov 11 15:11:28 2020 +0800
>
> perf arm-spe: Include bitops.h for BIT() macro
>
> Include header linux/bitops.h, directly use its BIT() macro and remove
> the self defined macros.
>
> Signed-off-by: Leo Yan <leo....@linaro.org>
> Reviewed-by: Andre Przywara <andre.przyw...@arm.com>
> Link: https://lore.kernel.org/r/20201111071149.815-2-leo....@linaro.org
> Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
>
> tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 5 +----
> tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c | 3 +--
> 2 files changed, 2 insertions(+), 6 deletions(-)
Ah, thanks! I think I mentioned the missing usage of BIT_ULL() in an
earlier review, and thought this was fixed. Possibly this gets fixed in
a later patch in this series, and is a temporary regression?
How do you want to handle this? Shall Leo resend, amending this patch
(and merging 06 and 07 on the way ;-)?
Cheers,
Andre
