Commit df8f6181ab57 for kernel
commit df8f6181ab57d65a99e61fcfc5be22a42df58642
Merge: 8541d8f725c6 9a683fe0a00d
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sat Apr 18 09:24:56 2026 -0700
Merge tag 'perf-tools-for-v7.1-2026-04-17' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Namhyung Kim:
"perf report:
- Add 'comm_nodigit' sort key to combine similar threads that only
have different numbers in the comm. In the following example, the
'comm_nodigit' will have samples from all threads starting with
"bpfrb/" into an entry "bpfrb/<N>".
$ perf report -s comm_nodigit,comm -H
...
#
# Overhead CommandNoDigit / Command
# ........... ........................
#
20.30% swapper
20.30% swapper
13.37% chrome
13.37% chrome
10.07% bpfrb/<N>
7.47% bpfrb/0
0.70% bpfrb/1
0.47% bpfrb/3
0.46% bpfrb/2
0.25% bpfrb/4
0.23% bpfrb/5
0.20% bpfrb/6
0.14% bpfrb/10
0.07% bpfrb/7
- Support flat layout for symfs. The --symfs option is to specify the
location of debugging symbol files. The default 'hierarchy' layout
would search the symbol file using the same path of the original
file under the symfs root. The new 'flat' layout would search only
in the root directory.
- Update 'simd' sort key for ARM SIMD flags to cover ASE/SME and more
predicate flags.
perf stat:
- Add --pmu-filter option to select specific PMUs. This would be
useful when you measure metrics from multiple instance of uncore
PMUs with similar names.
# perf stat -M cpa_p0_avg_bw
Performance counter stats for 'system wide':
19,417,779,115 hisi_sicl0_cpa0/cpa_cycles/ # 0.00 cpa_p0_avg_bw
0 hisi_sicl0_cpa0/cpa_p0_wr_dat/
0 hisi_sicl0_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl0_cpa0/cpa_p0_rd_dat_32b/
19,417,751,103 hisi_sicl10_cpa0/cpa_cycles/ # 0.00 cpa_p0_avg_bw
0 hisi_sicl10_cpa0/cpa_p0_wr_dat/
0 hisi_sicl10_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl10_cpa0/cpa_p0_rd_dat_32b/
19,417,730,679 hisi_sicl2_cpa0/cpa_cycles/ # 0.31 cpa_p0_avg_bw
75,635,749 hisi_sicl2_cpa0/cpa_p0_wr_dat/
18,520,640 hisi_sicl2_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl2_cpa0/cpa_p0_rd_dat_32b/
19,417,674,227 hisi_sicl8_cpa0/cpa_cycles/ # 0.00 cpa_p0_avg_bw
0 hisi_sicl8_cpa0/cpa_p0_wr_dat/
0 hisi_sicl8_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl8_cpa0/cpa_p0_rd_dat_32b/
19.417734480 seconds time elapsed
With --pmu-filter, users can select only hisi_sicl2_cpa0 PMU.
# perf stat --pmu-filter hisi_sicl2_cpa0 -M cpa_p0_avg_bw
Performance counter stats for 'system wide':
6,234,093,559 cpa_cycles # 0.60 cpa_p0_avg_bw
50,548,465 cpa_p0_wr_dat
7,552,182 cpa_p0_rd_dat_64b
0 cpa_p0_rd_dat_32b
6.234139320 seconds time elapsed
Data type profiling:
- Quality improvements by tracking register state more precisely
- Ensure array members to get the type
- Handle more cases for global variables
Vendor event/metric updates:
- Update various Intel events and metrics
- Add NVIDIA Tegra 410 Olympus events
Internal changes:
- Verify perf.data header for maliciously crafted files
- Update perf test to cover more usages and make them robust
- Move a couple of copied kernel headers not to annoy objtool build
- Fix a bug in map sorting in name order
- Remove some unused codes
Misc:
- Fix module symbol resolution with non-zero text address
- Add -t/--threads option to `perf bench mem mmap`
- Track duration of exit*() syscall by `perf trace -s`
- Add core.addr2line-timeout and core.addr2line-disable-warn config
items"
* tag 'perf-tools-for-v7.1-2026-04-17' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (131 commits)
perf loongarch: Fix build failure with CONFIG_LIBDW_DWARF_UNWIND
perf annotate: Use jump__delete when freeing LoongArch jumps
perf test: Fixes for check branch stack sampling
perf test: Fix inet_pton probe failure and unroll call graph
perf build: fix "argument list too long" in second location
perf header: Add sanity checks to HEADER_BPF_BTF processing
perf header: Sanity check HEADER_BPF_PROG_INFO
perf header: Sanity check HEADER_PMU_CAPS
perf header: Sanity check HEADER_HYBRID_TOPOLOGY
perf header: Sanity check HEADER_CACHE
perf header: Sanity check HEADER_GROUP_DESC
perf header: Sanity check HEADER_PMU_MAPPINGS
perf header: Sanity check HEADER_MEM_TOPOLOGY
perf header: Sanity check HEADER_NUMA_TOPOLOGY
perf header: Sanity check HEADER_CPU_TOPOLOGY
perf header: Sanity check HEADER_NRCPUS and HEADER_CPU_DOMAIN_INFO
perf header: Bump up the max number of command line args allowed
perf header: Validate nr_domains when reading HEADER_CPU_DOMAIN_INFO
perf sample: Fix documentation typo
perf arm_spe: Improve SIMD flags setting
...