Ian Rogers b1c5efbfd9 perf parse-events: Remove hard coded legacy hardware and cache parsing ... Now that legacy hardware and cache events are in json, having the lexer match the specific event is no longer necessary and generic PMU parsing can take place. Because of this remove the specific term parsing, event adding, and passing of alternate_hw_config which was now always PERF_COUNT_HW_MAX. This mirrors a similar change for software events in commit 6e9fa4131a ("perf parse-events: Remove non-json software events"). With no hard coded legacy hardware or cache events the wild card, case insensitivity, etc. is consistent for events. This does, however, mean events like cycles will wild card against all PMUs. A change does the same was originally posted and merged from: https://lore.kernel.org/r/20240416061533.921723-10-irogers@google.com and reverted by Linus in commit 4f1b067359 ("Revert "perf parse-events: Prefer sysfs/JSON hardware events over legacy"") due to his dislike for the cycles behavior on ARM. Earlier patches in this series make perf record event opening failures non-fatal and hide the cycles event's failure to open on ARM in perf record, so it is expected the behavior will now be transparent in perf record. perf stat with a cycles event will wildcard open the event on all PMUs. As cycles is a "default event", the perf stat behavior for default events was updated to only open them on core/software PMUs. The change to support legacy events with PMUs was done to clean up Intel's hybrid PMU implementation. Having sysfs/json events with increased priority to legacy was requested by Mark Rutland <mark.rutland@arm.com> to fix Apple-M PMU issues wrt broken legacy events on that PMU. It was requested that RISC-V be able to add events to the perf tool json so the PMU driver didn't need to map legacy events to config encodings: https://lore.kernel.org/lkml/20240217005738.3744121-1-atishp@rivosinc.com/ A previous series of patches decreasing legacy hardware event priorities was posted in: https://lore.kernel.org/lkml/20250416045117.876775-1-irogers@google.com/ Namhyung Kim <namhyung@kernel.org> mentioned that hardware and software events can be implemented similarly: https://lore.kernel.org/lkml/aIJmJns2lopxf3EK@google.com/ Tested-by: Thomas Richter <tmricht@linux.ibm.com> Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: James Clark <james.clark@linaro.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org>		2025-10-15 23:59:11 +09:00
..
accounting	tools/delaytop: improve error handling for missing PSI support	2025-09-13 17:32:56 -07:00
arch	- Simplify inline asm flag output operands now that the minimum compiler	2025-10-11 10:51:14 -07:00
bootconfig
bpf	bpftool: Remove duplicate string.h header	2025-09-27 04:23:15 -07:00
build	perf build: Correct CROSS_ARCH for clang	2025-10-06 16:49:25 -03:00
certs
cgroup
counter
crypto
debugging
docs	docs: add tools/docs/gen-redirects.py	2025-09-09 13:37:16 -06:00
firewire
firmware
gpio	tools: gpio: remove the include directory on make clean	2025-09-04 16:29:28 +02:00
hv
iio	iio: add power and energy measurement modifiers	2025-09-13 13:47:19 +01:00
include	- Remove a bunch of asm implementing condition flags testing in KVM's	2025-10-11 11:19:16 -07:00
kvm/kvm_stat
laptop
leds
lib	bpf-fixes	2025-10-11 10:31:38 -07:00
memory-model
mm	tools/mm/slabinfo: fix access to null terminator in string boundary	2025-09-21 14:22:00 -07:00
net	NFSD 6.18 Release Notes	2025-10-06 13:22:21 -07:00
objtool	- Remove a bunch of asm implementing condition flags testing in KVM's	2025-10-11 11:19:16 -07:00
pcmcia
perf	perf parse-events: Remove hard coded legacy hardware and cache parsing	2025-10-15 23:59:11 +09:00
power	Kbuild updates for 6.18	2025-10-01 20:58:51 -07:00
rcu
sched
sched_ext	tools/sched_ext: scx_qmap: Make debug output quieter by default	2025-09-23 09:03:26 -10:00
scripts
sound
spi
testing	bpf-fixes	2025-10-11 10:31:38 -07:00
thermal
time
tracing	rtla: Updates for v6.18	2025-10-05 09:38:26 -07:00
usb	tools/usb/usbip: fix spelling mistakes in usbipd.c	2025-09-06 15:22:14 +02:00
verification
virtio	kmsan: convert kmsan_handle_dma to use physical addresses	2025-09-12 00:18:20 +02:00
wmi
workqueue
writeback
Makefile