* Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> Hi all,
>
> After merging the final tree, linux-next builds (arm corgi_defconfig,
> spitz_defconfig) fail like this:
>
> arch/arm/kernel/perf_event.c: In function 'armpmu_event_init':
> arch/arm/kernel/perf_event.c:543: error: request for member 'num_events' in something
not a structure or union
>
> Caused by commit 15ac9a395a753cb28c674e7ea80386ffdff21785 ("perf: Remove
> the sysfs bits").
Thanks, fixed.
> This seems to have broken in next-20100913 and noone has noticed/bothered
> to fix it.
What appears to have happened is the following: the build bug depends on
CONFIG_HW_PERF_EVENTS=y, which is off by default on ARM (which default
to a v5 CPU type - while hw pmu support is for v6+ cpus).
So the regular ARM defconfig built fine both in -next and here in the
latest perf/core tree:
testing arm: -git: pass ( 0), -tip: pass ( 4)
Some new change in linux-next appears to have turned on HW_PERF_EVENTS
elsewhere which you thus tested for the first time - which triggered the
build bug.
Thanks,
Ingo
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