On Wed, Dec 04, 2024 at 11:09:50PM -0800, Ian Rogers wrote:
> On Wed, Dec 4, 2024 at 10:33 PM Ian Rogers <irog...@google.com> wrote:
> >
> > On Wed, Dec 4, 2024 at 9:47 PM Namhyung Kim <namhy...@kernel.org> wrote:
> > >
> > > Hi Ian,
> > >
> > > On Wed, Dec 04, 2024 at 06:23:05PM -0800, Ian Rogers wrote:
> > > > The refactoring of tool PMU events to have a PMU then adding the expr
> > > > literals to the tool PMU made it so that the literal system_tsc_freq
> > > > was only supported on x86. Update the test expectations to match -
> > > > namely the parsing is x86 specific and only yields a non-zero value on
> > > > Intel.
> > > >
> > > > Fixes: 609aa2667f67 ("perf tool_pmu: Switch to standard pmu functions
> > > > and json descriptions")
> > > > Reported-by: Athira Rajeev <atraj...@linux.vnet.ibm.com>
> > > > Closes:
> > > > https://lore.kernel.org/linux-perf-users/20241022140156.98854-1-atraj...@linux.vnet.ibm.com/
> > > > Co-developed-by: Athira Rajeev <atraj...@linux.vnet.ibm.com>
> > > > Signed-off-by: Ian Rogers <irog...@google.com>
> > >
> > > It failed on my VM.
> > >
> > > root@arm64-vm:~/build# ./perf test -v 7
> > > --- start ---
> > > test child forked, pid 2096
> > > Using CPUID 0x00000000000f0510
> > > division by zero
> > > syntax error
> > > Unrecognized literal '#system_tsc_freq'FAILED tests/expr.c:253
> > > #system_tsc_freq == 0
> > > ---- end(-1) ----
> > > 7: Simple expression parser :
> > > FAILED!
> >
> > I'll need to check this. The test is looking for parsing failures, so
> > it's confusing to me expr__parse is returning 0. I was testing on x86
> > but disabling the literal in the tool PMU.
>
> Hmm.. perhaps you had a similar issue to me and that b4 silently
> failed as git user.email/user.name weren't configured? When I test on
No, I confirmed it's appplied. Maybe my VM setting has some problem.
After reboot + rebuild it works now, sorry for the noise.
Thanks,
Namhyung
> a raspberry pi 5:
> ```
> $ uname -a
> Linux raspberrypi 6.6.51+rpt-rpi-2712 #1 SMP PREEMPT Debian
> 1:6.6.51-1+rpt3 (2024-10-08) aarch64 GNU/Linux
> $ git log -1 --oneline
> 94733a0e50fd (HEAD -> ptn-expr-test) perf test expr: Fix
> system_tsc_freq for only x86
> $ /tmp/perf/perf test expr -v
> Couldn't bump rlimit(MEMLOCK), failures may take place when creating
> BPF maps, etc
> 7: Simple expression parser : Ok
> ```
>
> Thanks,
> Ian
