linux-kernel - Re: [PATCH v1] perf trace: Filter enum arguments with enum names

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Date: Mon, 17 Jun 2024 17:29:10 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Howard Chu <howardchu95@...il.com>
Cc: peterz@...radead.org, mingo@...hat.com, namhyung@...nel.org,
	mark.rutland@....com, alexander.shishkin@...ux.intel.com,
	jolsa@...nel.org, irogers@...gle.com, adrian.hunter@...el.com,
	kan.liang@...ux.intel.com, linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] perf trace: Filter enum arguments with enum names

On Sat, Jun 15, 2024 at 02:29:58PM +0800, Howard Chu wrote:
> Before:
> 
> perf $ ./perf trace -e timer:hrtimer_start --filter='mode!=HRTIMER_MODE_ABS_PINNED_HARD' --max-events=1
> No resolver (strtoul) for "mode" in "timer:hrtimer_start", can't set filter "(mode!=HRTIMER_MODE_ABS_PINNED_HARD) && (common_pid != 281988)"
> 
> After:
> 
> perf $ ./perf trace -e timer:hrtimer_start --filter='mode!=HRTIMER_MODE_ABS_PINNED_HARD' --max-events=1
>      0.000 :0/0 timer:hrtimer_start(hrtimer: 0xffff9498a6ca5f18, function: 0xffffffffa77a5be0, expires: 12351248764875, softexpires: 12351248764875, mode: HRTIMER_MODE_ABS)

This one I had to apply manually after applying the other two patches:

⬢[acme@...lbox perf-tools-next]$        git am ./20240615_howardchu95_perf_trace_filter_enum_arguments_with_enum_names.mbx
Applying: perf trace: Filter enum arguments with enum names
error: patch failed: tools/perf/builtin-trace.c:904
error: tools/perf/builtin-trace.c: patch does not apply
Patch failed at 0001 perf trace: Filter enum arguments with enum names
hint: Use 'git am --show-current-patch=diff' to see the failed patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
⬢[acme@...lbox perf-tools-next]$ git am --abort
⬢[acme@...lbox perf-tools-next]$ patch -p1 <  ./20240615_howardchu95_perf_trace_filter_enum_arguments_with_enum_names.mbx
patching file tools/perf/builtin-trace.c
Hunk #1 succeeded at 894 with fuzz 2 (offset -10 lines).
Hunk #2 succeeded at 932 (offset -10 lines).
Hunk #3 succeeded at 1905 (offset 3 lines).
Hunk #4 succeeded at 3832 (offset 3 lines).
Hunk #5 succeeded at 3842 (offset 3 lines).
Hunk #6 succeeded at 3883 (offset 3 lines).
Hunk #7 succeeded at 3902 (offset 3 lines).
⬢[acme@...lbox perf-tools-next]$ 

I'll push what I have to that tmp.perf-tools-next on my git repo at:

https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git

- Arnaldo