mirror of https://github.com/torvalds/linux.git
16336 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Arnaldo Carvalho de Melo
|
e162cb25c4 |
perf daemon: Fix the build on more 32-bit architectures
FYI: I'm carrying this on perf-tools-next.
The previous attempt fixed the build on debian:experimental-x-mipsel,
but when building on a larger set of containers I noticed it broke the
build on some other 32-bit architectures such as:
42 7.87 ubuntu:18.04-x-arm : FAIL gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)
builtin-daemon.c: In function 'cmd_session_list':
builtin-daemon.c:692:16: error: format '%llu' expects argument of type 'long long unsigned int', but argument 4 has type 'long int' [-Werror=format=]
fprintf(out, "%c%" PRIu64,
^~~~~
builtin-daemon.c:694:13:
csv_sep, (curr - daemon->start) / 60);
~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from builtin-daemon.c:3:0:
/usr/arm-linux-gnueabihf/include/inttypes.h:105:34: note: format string is defined here
# define PRIu64 __PRI64_PREFIX "u"
So lets cast that time_t (32-bit/64-bit) to uint64_t to make sure it
builds everywhere.
Fixes:
|
|
Xu Yang
|
aee1d55922 |
perf python: include "util/sample.h"
The 32-bit arm build system will complain: tools/perf/util/python.c:75:28: error: field ‘sample’ has incomplete type 75 | struct perf_sample sample; However, arm64 build system doesn't complain this. The root cause is arm64 define "HAVE_KVM_STAT_SUPPORT := 1" in tools/perf/arch/arm64/Makefile, but arm arch doesn't define this. This will lead to kvm-stat.h include other header files on arm64 build system, especially "util/sample.h" for util/python.c. This will try to directly include "util/sample.h" for "util/python.c" to avoid such build issue on arm platform. Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Cc: imx@lists.linux.dev Link: https://lore.kernel.org/r/20240819023403.201324-1-xu.yang_2@nxp.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
|
Namhyung Kim
|
287bd5cf06 |
perf lock contention: Fix spinlock and rwlock accounting
The spinlock and rwlock use a single-element per-cpu array to track
current locks due to performance reason. But this means the key is
always available and it cannot simply account lock stats in the array
because some of them are invalid.
In fact, the contention_end() program in the BPF invalidates the entry
by setting the 'lock' value to 0 instead of deleting the entry for the
hashmap. So it should skip entries with the lock value of 0 in the
account_end_timestamp().
Otherwise, it'd have spurious high contention on an idle machine:
$ sudo perf lock con -ab -Y spinlock sleep 3
contended total wait max wait avg wait type caller
8 4.72 s 1.84 s 590.46 ms spinlock rcu_core+0xc7
8 1.87 s 1.87 s 233.48 ms spinlock process_one_work+0x1b5
2 1.87 s 1.87 s 933.92 ms spinlock worker_thread+0x1a2
3 1.81 s 1.81 s 603.93 ms spinlock tmigr_update_events+0x13c
2 1.72 s 1.72 s 861.98 ms spinlock tick_do_update_jiffies64+0x25
6 42.48 us 13.02 us 7.08 us spinlock futex_q_lock+0x2a
1 13.03 us 13.03 us 13.03 us spinlock futex_wake+0xce
1 11.61 us 11.61 us 11.61 us spinlock rcu_core+0xc7
I don't believe it has contention on a spinlock longer than 1 second.
After this change, it only reports some small contentions.
$ sudo perf lock con -ab -Y spinlock sleep 3
contended total wait max wait avg wait type caller
4 133.51 us 43.29 us 33.38 us spinlock tick_do_update_jiffies64+0x25
4 69.06 us 31.82 us 17.27 us spinlock process_one_work+0x1b5
2 50.66 us 25.77 us 25.33 us spinlock rcu_core+0xc7
1 28.45 us 28.45 us 28.45 us spinlock rcu_core+0xc7
1 24.77 us 24.77 us 24.77 us spinlock tmigr_update_events+0x13c
1 23.34 us 23.34 us 23.34 us spinlock raw_spin_rq_lock_nested+0x15
Fixes:
|
|
Veronika Molnarova
|
1c7fb536e8 |
perf test pmu: Set uninitialized PMU alias to null
Commit |
|
Arnaldo Carvalho de Melo
|
4bbe600293 |
perf daemon: Fix the build on 32-bit architectures
Noticed with:
1 6.22 debian:experimental-x-mipsel : FAIL gcc version 13.2.0 (Debian 13.2.0-25)
builtin-daemon.c: In function 'cmd_session_list':
builtin-daemon.c:691:35: error: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'time_t' {aka 'long long int'} [-Werror=format=]
Use inttypes.h's PRIu64 to deal with that.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/ZplvH21aQ8pzmza_@x1
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Namhyung Kim
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845295f400 |
tools/include: Sync filesystem headers with the kernel sources
To pick up changes from: |
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Namhyung Kim
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ed86525f1f |
tools/include: Sync network socket headers with the kernel sources
To pick up changes from: |
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Namhyung Kim
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568901e709 |
tools/include: Sync uapi/asm-generic/unistd.h with the kernel sources
And arch syscall tables to pick up changes from: |
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Namhyung Kim
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b973500676 |
tools/include: Sync uapi/sound/asound.h with the kernel sources
To pick up changes from:
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Linus Torvalds
|
948752d2e0 |
RISC-V Fixes for 6.11-rc2
* A fix to avoid dropping some of the internal pseudo-extensions, which breaks *envcfg dependency parsing. * The kernel entry address is now aligned in purgatory, which avoids a misaligned load that can lead to crash on systems that don't support misaligned accesses early in boot. * The FW_SFENCE_VMA_RECEIVED perf event was duplicated in a handful of perf JSON configurations, one of them been updated to FW_SFENCE_VMA_ASID_SENT. * The starfive cache driver is now restricted to 64-bit systems, as it isn't 32-bit clean. * A fix for to avoid aliasing legacy-mode perf counters with software perf counters. * VM_FAULT_SIGSEGV is now handled in the page fault code. * A fix for stalls during CPU hotplug due to IPIs being disabled. * A fix for memblock bounds checking. This manifests as a crash on systems with discontinuous memory maps that have regions that don't fit in the linear map. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmas/qwTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiWp7EACDcorcihBG8uSsX//GKJPjkiGIbZkT MIMN3yqIzJuSftxpvgVxpyq2MFKYy7BK/75sK+4VoQpoCJEtdxbdh0JUqck/Nrgj Kn0hxWy7RO6Rp9ggf9dTdca64Tdxh32Eegpum3E46zuhYQBMcNze4z4NsOXs6ems 254ww8+v7V5R7FGsxm1PG4Hs3soxZ9FPdWE69ndxmjr9N5FFkchk5YbV8AgKYtSJ sfu5Q+68zh58GVZhn0usug0fHNgVzdvwy3PIBDGD58hqIDAs9WlF80MiW3sESTIe PrJcAFBU4tHp+8h+OMaKw2xfybrZpNmqobx7dED34PJu0R4+Uvz7MUKMMPUJeB+q 7UOZokjF2Hvd5VsAeTc1PisvzVsWkWpkzJqZmdaTr2m8J4m5z7/nby+ZcXmoOlVz JiMDgrkM4KIziq++9bYbBfcxsS9dMsvNtEQAHByL/zdVfAFTvWUMUmAgg27C3K9Z QbHfbpxqQ/pEu4CsRUIx4GnkEKnWPLuGovnYboGmC3BCDwQkkV8H0tcEhJtWMKte 6h+vvKBX2POS4l8467ElmcTRv5Cfpi/dmhZrC9SHHQhNF5OiHHM2CmSEOKS1bUPj e4+k/QGmVQOAJGRRPkpD+DFMhHT/jhvbYV4kDXr/h9AKJQ2eWRGMSOMaPJ/X311N R5W1yiJilIhXuQ== =K52W -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - A fix to avoid dropping some of the internal pseudo-extensions, which breaks *envcfg dependency parsing - The kernel entry address is now aligned in purgatory, which avoids a misaligned load that can lead to crash on systems that don't support misaligned accesses early in boot - The FW_SFENCE_VMA_RECEIVED perf event was duplicated in a handful of perf JSON configurations, one of them been updated to FW_SFENCE_VMA_ASID_SENT - The starfive cache driver is now restricted to 64-bit systems, as it isn't 32-bit clean - A fix for to avoid aliasing legacy-mode perf counters with software perf counters - VM_FAULT_SIGSEGV is now handled in the page fault code - A fix for stalls during CPU hotplug due to IPIs being disabled - A fix for memblock bounds checking. This manifests as a crash on systems with discontinuous memory maps that have regions that don't fit in the linear map * tag 'riscv-for-linus-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Fix linear mapping checks for non-contiguous memory regions RISC-V: Enable the IPI before workqueue_online_cpu() riscv/mm: Add handling for VM_FAULT_SIGSEGV in mm_fault_error() perf: riscv: Fix selecting counters in legacy mode cache: StarFive: Require a 64-bit system perf arch events: Fix duplicate RISC-V SBI firmware event name riscv/purgatory: align riscv_kernel_entry riscv: cpufeature: Do not drop Linux-internal extensions |
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Eric Lin
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63ba5b0fb4
|
perf arch events: Fix duplicate RISC-V SBI firmware event name
Currently, the RISC-V firmware JSON file has duplicate event name
"FW_SFENCE_VMA_RECEIVED". According to the RISC-V SBI PMU extension[1],
the event name should be "FW_SFENCE_VMA_ASID_SENT".
Before this patch:
$ perf list
firmware:
fw_access_load
[Load access trap event. Unit: cpu]
fw_access_store
[Store access trap event. Unit: cpu]
....
fw_set_timer
[Set timer event. Unit: cpu]
fw_sfence_vma_asid_received
[Received SFENCE.VMA with ASID request from other HART event. Unit: cpu]
fw_sfence_vma_received
[Sent SFENCE.VMA with ASID request to other HART event. Unit: cpu]
After this patch:
$ perf list
firmware:
fw_access_load
[Load access trap event. Unit: cpu]
fw_access_store
[Store access trap event. Unit: cpu]
.....
fw_set_timer
[Set timer event. Unit: cpu]
fw_sfence_vma_asid_received
[Received SFENCE.VMA with ASID request from other HART event. Unit: cpu]
fw_sfence_vma_asid_sent
[Sent SFENCE.VMA with ASID request to other HART event. Unit: cpu]
fw_sfence_vma_received
[Received SFENCE.VMA request from other HART event. Unit: cpu]
Link: https://github.com/riscv-non-isa/riscv-sbi-doc/blob/master/src/ext-pmu.adoc#event-firmware-events-type-15 [1]
Fixes:
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Linus Torvalds
|
e254e0c5ba |
Another perf tools fixes for v6.11
Some more fixes about the build and a random crash: * Fix cross-build by setting pkg-config env according to the arch * Fix static build for missing library dependencies * Fix Segfault when callchain has no symbols Signed-off-by: Namhyung Kim <namhyung@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCZqls2wAKCRCMstVUGiXM g12aAQCovAOO6jC5GrzCS8KlBoHXplyGL1rscI2uZfOttotBnQEA875Ov6FNL9Ux u9oxHZOpN/U4Xnyeoj9c43ibae/urAQ= =LTu1 -----END PGP SIGNATURE----- Merge tag 'perf-tools-fixes-for-v6.11-2024-07-30' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools fixes from Namhyung Kim: "Some more build fixes and a random crash fix: - Fix cross-build by setting pkg-config env according to the arch - Fix static build for missing library dependencies - Fix Segfault when callchain has no symbols" * tag 'perf-tools-fixes-for-v6.11-2024-07-30' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: perf docs: Document cross compilation perf: build: Link lib 'zstd' for static build perf: build: Link lib 'lzma' for static build perf: build: Only link libebl.a for old libdw perf: build: Set Python configuration for cross compilation perf: build: Setup PKG_CONFIG_LIBDIR for cross compilation perf tool: fix dereferencing NULL al->maps |
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Leo Yan
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d27087c76e |
perf docs: Document cross compilation
Records the commands for cross compilation with two methods. The first method relies on Multiarch. The second approach is to explicitly specify the PKG_CONFIG variables, which is widely used in build system (like Buildroot, Yocto, etc). Co-developed-by: James Clark <james.clark@arm.com> Signed-off-by: James Clark <james.clark@arm.com> Signed-off-by: Leo Yan <leo.yan@arm.com> Tested-by: Ian Rogers <irogers@google.com> Cc: amadio@gentoo.org Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20240717082211.524826-7-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Leo Yan
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f42596c738 |
perf: build: Link lib 'zstd' for static build
When build static perf, Makefile reports the error: Makefile.config:480: No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR The libdw has been installed on the system, but the build system fails to build the feature detecting binary 'test-libdw-dwarf-unwind'. The failure is caused by missing to link the lib 'zstd'. Link lib 'zstd' for the static build, in the end, the dwarf feature can be enabled in the static perf. Signed-off-by: Leo Yan <leo.yan@arm.com> Tested-by: Ian Rogers <irogers@google.com> Cc: amadio@gentoo.org Cc: James Clark <james.clark@linaro.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20240717082211.524826-6-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Leo Yan
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536661da6e |
perf: build: Only link libebl.a for old libdw
Since libdw version 0.177, elfutils has merged libebl.a into libdw (see the commit "libebl: Don't install libebl.a, libebl.h and remove backends from spec." in the elfutils repository). As a result, libebl.a does not exist on Debian Bullseye and newer releases, causing static perf builds to fail on these distributions. This commit checks the libdw version and only links libebl.a if it detects that the libdw version is older than 0.177. Signed-off-by: Leo Yan <leo.yan@arm.com> Tested-by: Ian Rogers <irogers@google.com> Cc: amadio@gentoo.org Cc: James Clark <james.clark@linaro.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20240717082211.524826-4-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Leo Yan
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cffe29d3b5 |
perf: build: Set Python configuration for cross compilation
Python configuration has dedicated folders for different architectures. For example, Python 3.11 has two folders as shown below, one for Arm64 and another for x86_64: /usr/lib/python3.11/config-3.11-aarch64-linux-gnu/ /usr/lib/python3.11/config-3.11-x86_64-linux-gnu/ This commit updates the Python configuration path based on the compiler's machine type, guiding the compiler to find the correct path for Python libraries. It also renames the generated .so file name to match the machine name. Signed-off-by: Leo Yan <leo.yan@arm.com> Tested-by: Ian Rogers <irogers@google.com> Cc: amadio@gentoo.org Cc: James Clark <james.clark@linaro.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20240717082211.524826-3-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Leo Yan
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440cf77625 |
perf: build: Setup PKG_CONFIG_LIBDIR for cross compilation
On recent Linux distros like Ubuntu Noble and Debian Bookworm, the 'pkg-config-aarch64-linux-gnu' package is missing. As a result, the aarch64-linux-gnu-pkg-config command is not available, which causes build failures. When a build passes the environment variables PKG_CONFIG_LIBDIR or PKG_CONFIG_PATH, like a user uses make command or a build system (like Yocto, Buildroot, etc) prepares the variables and passes to the Perf's Makefile, the commit keeps these variables for package configuration. Otherwise, this commit sets the PKG_CONFIG_LIBDIR variable to use the Multiarch libs for the cross compilation. Signed-off-by: Leo Yan <leo.yan@arm.com> Tested-by: Ian Rogers <irogers@google.com> Cc: amadio@gentoo.org Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20240717082211.524826-2-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Casey Chen
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4c17736689 |
perf tool: fix dereferencing NULL al->maps
With |
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Linus Torvalds
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786c8248db |
perf tools fixes for v6.11
Two fixes about building perf and other tools:
* Fix breakage in tracing tools due to pkg-config for libtrace{event,fs}
* Fix build of perf when libunwind is used
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-fixes-for-v6.11-2024-07-23' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools fixes from Namhyung Kim:
"Two fixes for building perf and other tools:
- Fix breakage in tracing tools due to pkg-config for
libtrace{event,fs}
- Fix build of perf when libunwind is used"
* tag 'perf-tools-fixes-for-v6.11-2024-07-23' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
perf dso: Fix build when libunwind is enabled
tools/latency: Use pkg-config in lib_setup of Makefile.config
tools/rtla: Use pkg-config in lib_setup of Makefile.config
tools/verification: Use pkg-config in lib_setup of Makefile.config
tools: Make pkg-config dependency checks usable by other tools
perf build: Warn if libtracefs is not found
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Linus Torvalds
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ca83c61cb3 |
Kbuild updates for v6.11
- Remove tristate choice support from Kconfig
- Stop using the PROVIDE() directive in the linker script
- Reduce the number of links for the combination of CONFIG_DEBUG_INFO_BTF
and CONFIG_KALLSYMS
- Enable the warning for symbol reference to .exit.* sections by default
- Fix warnings in RPM package builds
- Improve scripts/make_fit.py to generate a FIT image with separate base
DTB and overlays
- Improve choice value calculation in Kconfig
- Fix conditional prompt behavior in choice in Kconfig
- Remove support for the uncommon EMAIL environment variable in Debian
package builds
- Remove support for the uncommon "name <email>" form for the DEBEMAIL
environment variable
- Raise the minimum supported GNU Make version to 4.0
- Remove stale code for the absolute kallsyms
- Move header files commonly used for host programs to scripts/include/
- Introduce the pacman-pkg target to generate a pacman package used in
Arch Linux
- Clean up Kconfig
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Merge tag 'kbuild-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Remove tristate choice support from Kconfig
- Stop using the PROVIDE() directive in the linker script
- Reduce the number of links for the combination of CONFIG_KALLSYMS and
CONFIG_DEBUG_INFO_BTF
- Enable the warning for symbol reference to .exit.* sections by
default
- Fix warnings in RPM package builds
- Improve scripts/make_fit.py to generate a FIT image with separate
base DTB and overlays
- Improve choice value calculation in Kconfig
- Fix conditional prompt behavior in choice in Kconfig
- Remove support for the uncommon EMAIL environment variable in Debian
package builds
- Remove support for the uncommon "name <email>" form for the DEBEMAIL
environment variable
- Raise the minimum supported GNU Make version to 4.0
- Remove stale code for the absolute kallsyms
- Move header files commonly used for host programs to scripts/include/
- Introduce the pacman-pkg target to generate a pacman package used in
Arch Linux
- Clean up Kconfig
* tag 'kbuild-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (65 commits)
kbuild: doc: gcc to CC change
kallsyms: change sym_entry::percpu_absolute to bool type
kallsyms: unify seq and start_pos fields of struct sym_entry
kallsyms: add more original symbol type/name in comment lines
kallsyms: use \t instead of a tab in printf()
kallsyms: avoid repeated calculation of array size for markers
kbuild: add script and target to generate pacman package
modpost: use generic macros for hash table implementation
kbuild: move some helper headers from scripts/kconfig/ to scripts/include/
Makefile: add comment to discourage tools/* addition for kernel builds
kbuild: clean up scripts/remove-stale-files
kconfig: recursive checks drop file/lineno
kbuild: rpm-pkg: introduce a simple changelog section for kernel.spec
kallsyms: get rid of code for absolute kallsyms
kbuild: Create INSTALL_PATH directory if it does not exist
kbuild: Abort make on install failures
kconfig: remove 'e1' and 'e2' macros from expression deduplication
kconfig: remove SYMBOL_CHOICEVAL flag
kconfig: add const qualifiers to several function arguments
kconfig: call expr_eliminate_yn() at least once in expr_eliminate_dups()
...
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Linus Torvalds
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2c9b351240 |
ARM:
* Initial infrastructure for shadow stage-2 MMUs, as part of nested virtualization enablement * Support for userspace changes to the guest CTR_EL0 value, enabling (in part) migration of VMs between heterogenous hardware * Fixes + improvements to pKVM's FF-A proxy, adding support for v1.1 of the protocol * FPSIMD/SVE support for nested, including merged trap configuration and exception routing * New command-line parameter to control the WFx trap behavior under KVM * Introduce kCFI hardening in the EL2 hypervisor * Fixes + cleanups for handling presence/absence of FEAT_TCRX * Miscellaneous fixes + documentation updates LoongArch: * Add paravirt steal time support. * Add support for KVM_DIRTY_LOG_INITIALLY_SET. * Add perf kvm-stat support for loongarch. RISC-V: * Redirect AMO load/store access fault traps to guest * perf kvm stat support * Use guest files for IMSIC virtualization, when available ONE_REG support for the Zimop, Zcmop, Zca, Zcf, Zcd, Zcb and Zawrs ISA extensions is coming through the RISC-V tree. s390: * Assortment of tiny fixes which are not time critical x86: * Fixes for Xen emulation. * Add a global struct to consolidate tracking of host values, e.g. EFER * Add KVM_CAP_X86_APIC_BUS_CYCLES_NS to allow configuring the effective APIC bus frequency, because TDX. * Print the name of the APICv/AVIC inhibits in the relevant tracepoint. * Clean up KVM's handling of vendor specific emulation to consistently act on "compatible with Intel/AMD", versus checking for a specific vendor. * Drop MTRR virtualization, and instead always honor guest PAT on CPUs that support self-snoop. * Update to the newfangled Intel CPU FMS infrastructure. * Don't advertise IA32_PERF_GLOBAL_OVF_CTRL as an MSR-to-be-saved, as it reads '0' and writes from userspace are ignored. * Misc cleanups x86 - MMU: * Small cleanups, renames and refactoring extracted from the upcoming Intel TDX support. * Don't allocate kvm_mmu_page.shadowed_translation for shadow pages that can't hold leafs SPTEs. * Unconditionally drop mmu_lock when allocating TDP MMU page tables for eager page splitting, to avoid stalling vCPUs when splitting huge pages. * Bug the VM instead of simply warning if KVM tries to split a SPTE that is non-present or not-huge. KVM is guaranteed to end up in a broken state because the callers fully expect a valid SPTE, it's all but dangerous to let more MMU changes happen afterwards. x86 - AMD: * Make per-CPU save_area allocations NUMA-aware. * Force sev_es_host_save_area() to be inlined to avoid calling into an instrumentable function from noinstr code. * Base support for running SEV-SNP guests. API-wise, this includes a new KVM_X86_SNP_VM type, encrypting/measure the initial image into guest memory, and finalizing it before launching it. Internally, there are some gmem/mmu hooks needed to prepare gmem-allocated pages before mapping them into guest private memory ranges. This includes basic support for attestation guest requests, enough to say that KVM supports the GHCB 2.0 specification. There is no support yet for loading into the firmware those signing keys to be used for attestation requests, and therefore no need yet for the host to provide certificate data for those keys. To support fetching certificate data from userspace, a new KVM exit type will be needed to handle fetching the certificate from userspace. An attempt to define a new KVM_EXIT_COCO/KVM_EXIT_COCO_REQ_CERTS exit type to handle this was introduced in v1 of this patchset, but is still being discussed by community, so for now this patchset only implements a stub version of SNP Extended Guest Requests that does not provide certificate data. x86 - Intel: * Remove an unnecessary EPT TLB flush when enabling hardware. * Fix a series of bugs that cause KVM to fail to detect nested pending posted interrupts as valid wake eents for a vCPU executing HLT in L2 (with HLT-exiting disable by L1). * KVM: x86: Suppress MMIO that is triggered during task switch emulation Explicitly suppress userspace emulated MMIO exits that are triggered when emulating a task switch as KVM doesn't support userspace MMIO during complex (multi-step) emulation. Silently ignoring the exit request can result in the WARN_ON_ONCE(vcpu->mmio_needed) firing if KVM exits to userspace for some other reason prior to purging mmio_needed. See commit |
|
Jann Horn
|
64e166099b |
kallsyms: get rid of code for absolute kallsyms
Commit
|
|
James Clark
|
92717bc077 |
perf dso: Fix build when libunwind is enabled
Now that symsrc_filename is always accessed through an accessor, we also
need a free() function for it to avoid the following compilation error:
util/unwind-libunwind-local.c:416:12: error: lvalue required as unary
‘&’ operand
416 | zfree(&dso__symsrc_filename(dso));
Fixes:
|
|
Guilherme Amadio
|
8f61e98ad5 |
tools: Make pkg-config dependency checks usable by other tools
Other tools, in tools/verification and tools/tracing, make use of libtraceevent and libtracefs as dependencies. This allows setting up the feature check flags for them as well. Signed-off-by: Guilherme Amadio <amadio@gentoo.org> Tested-by: Thorsten Leemhuis <linux@leemhuis.info> Tested-by: Leo Yan <leo.yan@arm.com> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: linux-trace-devel@vger.kernel.org Link: https://lore.kernel.org/r/20240717174739.186988-3-amadio@gentoo.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
|
|
Guilherme Amadio
|
37ac347f87 |
perf build: Warn if libtracefs is not found
Signed-off-by: Guilherme Amadio <amadio@gentoo.org> Tested-by: Thorsten Leemhuis <linux@leemhuis.info> Tested-by: Leo Yan <leo.yan@arm.com> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: linux-trace-devel@vger.kernel.org Link: https://lore.kernel.org/r/20240717174739.186988-2-amadio@gentoo.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
|
Howard Chu
|
7a2fb5619c |
perf trace: Fix iteration of syscall ids in syscalltbl->entries
This is a bug found when implementing pretty-printing for the
landlock_add_rule system call, I decided to send this patch separately
because this is a serious bug that should be fixed fast.
I wrote a test program to do landlock_add_rule syscall in a loop,
yet perf trace -e landlock_add_rule freezes, giving no output.
This bug is introduced by the false understanding of the variable "key"
below:
```
for (key = 0; key < trace->sctbl->syscalls.nr_entries; ++key) {
struct syscall *sc = trace__syscall_info(trace, NULL, key);
...
}
```
The code above seems right at the beginning, but when looking at
syscalltbl.c, I found these lines:
```
for (i = 0; i <= syscalltbl_native_max_id; ++i)
if (syscalltbl_native[i])
++nr_entries;
entries = tbl->syscalls.entries = malloc(sizeof(struct syscall) * nr_entries);
...
for (i = 0, j = 0; i <= syscalltbl_native_max_id; ++i) {
if (syscalltbl_native[i]) {
entries[j].name = syscalltbl_native[i];
entries[j].id = i;
++j;
}
}
```
meaning the key is merely an index to traverse the syscall table,
instead of the actual syscall id for this particular syscall.
So if one uses key to do trace__syscall_info(trace, NULL, key), because
key only goes up to trace->sctbl->syscalls.nr_entries, for example, on
my X86_64 machine, this number is 373, it will end up neglecting all
the rest of the syscall, in my case, everything after `rseq`, because
the traversal will stop at 373, and `rseq` is the last syscall whose id
is lower than 373
in tools/perf/arch/x86/include/generated/asm/syscalls_64.c:
```
...
[334] = "rseq",
[424] = "pidfd_send_signal",
...
```
The reason why the key is scrambled but perf trace works well is that
key is used in trace__syscall_info(trace, NULL, key) to do
trace->syscalls.table[id], this makes sure that the struct syscall returned
actually has an id the same value as key, making the later bpf_prog
matching all correct.
After fixing this bug, I can do perf trace on 38 more syscalls, and
because more syscalls are visible, we get 8 more syscalls that can be
augmented.
before:
perf $ perf trace -vv --max-events=1 |& grep Reusing
Reusing "open" BPF sys_enter augmenter for "stat"
Reusing "open" BPF sys_enter augmenter for "lstat"
Reusing "open" BPF sys_enter augmenter for "access"
Reusing "connect" BPF sys_enter augmenter for "accept"
Reusing "sendto" BPF sys_enter augmenter for "recvfrom"
Reusing "connect" BPF sys_enter augmenter for "bind"
Reusing "connect" BPF sys_enter augmenter for "getsockname"
Reusing "connect" BPF sys_enter augmenter for "getpeername"
Reusing "open" BPF sys_enter augmenter for "execve"
Reusing "open" BPF sys_enter augmenter for "truncate"
Reusing "open" BPF sys_enter augmenter for "chdir"
Reusing "open" BPF sys_enter augmenter for "mkdir"
Reusing "open" BPF sys_enter augmenter for "rmdir"
Reusing "open" BPF sys_enter augmenter for "creat"
Reusing "open" BPF sys_enter augmenter for "link"
Reusing "open" BPF sys_enter augmenter for "unlink"
Reusing "open" BPF sys_enter augmenter for "symlink"
Reusing "open" BPF sys_enter augmenter for "readlink"
Reusing "open" BPF sys_enter augmenter for "chmod"
Reusing "open" BPF sys_enter augmenter for "chown"
Reusing "open" BPF sys_enter augmenter for "lchown"
Reusing "open" BPF sys_enter augmenter for "mknod"
Reusing "open" BPF sys_enter augmenter for "statfs"
Reusing "open" BPF sys_enter augmenter for "pivot_root"
Reusing "open" BPF sys_enter augmenter for "chroot"
Reusing "open" BPF sys_enter augmenter for "acct"
Reusing "open" BPF sys_enter augmenter for "swapon"
Reusing "open" BPF sys_enter augmenter for "swapoff"
Reusing "open" BPF sys_enter augmenter for "delete_module"
Reusing "open" BPF sys_enter augmenter for "setxattr"
Reusing "open" BPF sys_enter augmenter for "lsetxattr"
Reusing "openat" BPF sys_enter augmenter for "fsetxattr"
Reusing "open" BPF sys_enter augmenter for "getxattr"
Reusing "open" BPF sys_enter augmenter for "lgetxattr"
Reusing "openat" BPF sys_enter augmenter for "fgetxattr"
Reusing "open" BPF sys_enter augmenter for "listxattr"
Reusing "open" BPF sys_enter augmenter for "llistxattr"
Reusing "open" BPF sys_enter augmenter for "removexattr"
Reusing "open" BPF sys_enter augmenter for "lremovexattr"
Reusing "fsetxattr" BPF sys_enter augmenter for "fremovexattr"
Reusing "open" BPF sys_enter augmenter for "mq_open"
Reusing "open" BPF sys_enter augmenter for "mq_unlink"
Reusing "fsetxattr" BPF sys_enter augmenter for "add_key"
Reusing "fremovexattr" BPF sys_enter augmenter for "request_key"
Reusing "fremovexattr" BPF sys_enter augmenter for "inotify_add_watch"
Reusing "fremovexattr" BPF sys_enter augmenter for "mkdirat"
Reusing "fremovexattr" BPF sys_enter augmenter for "mknodat"
Reusing "fremovexattr" BPF sys_enter augmenter for "fchownat"
Reusing "fremovexattr" BPF sys_enter augmenter for "futimesat"
Reusing "fremovexattr" BPF sys_enter augmenter for "newfstatat"
Reusing "fremovexattr" BPF sys_enter augmenter for "unlinkat"
Reusing "fremovexattr" BPF sys_enter augmenter for "linkat"
Reusing "open" BPF sys_enter augmenter for "symlinkat"
Reusing "fremovexattr" BPF sys_enter augmenter for "readlinkat"
Reusing "fremovexattr" BPF sys_enter augmenter for "fchmodat"
Reusing "fremovexattr" BPF sys_enter augmenter for "faccessat"
Reusing "fremovexattr" BPF sys_enter augmenter for "utimensat"
Reusing "connect" BPF sys_enter augmenter for "accept4"
Reusing "fremovexattr" BPF sys_enter augmenter for "name_to_handle_at"
Reusing "fremovexattr" BPF sys_enter augmenter for "renameat2"
Reusing "open" BPF sys_enter augmenter for "memfd_create"
Reusing "fremovexattr" BPF sys_enter augmenter for "execveat"
Reusing "fremovexattr" BPF sys_enter augmenter for "statx"
after
perf $ perf trace -vv --max-events=1 |& grep Reusing
Reusing "open" BPF sys_enter augmenter for "stat"
Reusing "open" BPF sys_enter augmenter for "lstat"
Reusing "open" BPF sys_enter augmenter for "access"
Reusing "connect" BPF sys_enter augmenter for "accept"
Reusing "sendto" BPF sys_enter augmenter for "recvfrom"
Reusing "connect" BPF sys_enter augmenter for "bind"
Reusing "connect" BPF sys_enter augmenter for "getsockname"
Reusing "connect" BPF sys_enter augmenter for "getpeername"
Reusing "open" BPF sys_enter augmenter for "execve"
Reusing "open" BPF sys_enter augmenter for "truncate"
Reusing "open" BPF sys_enter augmenter for "chdir"
Reusing "open" BPF sys_enter augmenter for "mkdir"
Reusing "open" BPF sys_enter augmenter for "rmdir"
Reusing "open" BPF sys_enter augmenter for "creat"
Reusing "open" BPF sys_enter augmenter for "link"
Reusing "open" BPF sys_enter augmenter for "unlink"
Reusing "open" BPF sys_enter augmenter for "symlink"
Reusing "open" BPF sys_enter augmenter for "readlink"
Reusing "open" BPF sys_enter augmenter for "chmod"
Reusing "open" BPF sys_enter augmenter for "chown"
Reusing "open" BPF sys_enter augmenter for "lchown"
Reusing "open" BPF sys_enter augmenter for "mknod"
Reusing "open" BPF sys_enter augmenter for "statfs"
Reusing "open" BPF sys_enter augmenter for "pivot_root"
Reusing "open" BPF sys_enter augmenter for "chroot"
Reusing "open" BPF sys_enter augmenter for "acct"
Reusing "open" BPF sys_enter augmenter for "swapon"
Reusing "open" BPF sys_enter augmenter for "swapoff"
Reusing "open" BPF sys_enter augmenter for "delete_module"
Reusing "open" BPF sys_enter augmenter for "setxattr"
Reusing "open" BPF sys_enter augmenter for "lsetxattr"
Reusing "openat" BPF sys_enter augmenter for "fsetxattr"
Reusing "open" BPF sys_enter augmenter for "getxattr"
Reusing "open" BPF sys_enter augmenter for "lgetxattr"
Reusing "openat" BPF sys_enter augmenter for "fgetxattr"
Reusing "open" BPF sys_enter augmenter for "listxattr"
Reusing "open" BPF sys_enter augmenter for "llistxattr"
Reusing "open" BPF sys_enter augmenter for "removexattr"
Reusing "open" BPF sys_enter augmenter for "lremovexattr"
Reusing "fsetxattr" BPF sys_enter augmenter for "fremovexattr"
Reusing "open" BPF sys_enter augmenter for "mq_open"
Reusing "open" BPF sys_enter augmenter for "mq_unlink"
Reusing "fsetxattr" BPF sys_enter augmenter for "add_key"
Reusing "fremovexattr" BPF sys_enter augmenter for "request_key"
Reusing "fremovexattr" BPF sys_enter augmenter for "inotify_add_watch"
Reusing "fremovexattr" BPF sys_enter augmenter for "mkdirat"
Reusing "fremovexattr" BPF sys_enter augmenter for "mknodat"
Reusing "fremovexattr" BPF sys_enter augmenter for "fchownat"
Reusing "fremovexattr" BPF sys_enter augmenter for "futimesat"
Reusing "fremovexattr" BPF sys_enter augmenter for "newfstatat"
Reusing "fremovexattr" BPF sys_enter augmenter for "unlinkat"
Reusing "fremovexattr" BPF sys_enter augmenter for "linkat"
Reusing "open" BPF sys_enter augmenter for "symlinkat"
Reusing "fremovexattr" BPF sys_enter augmenter for "readlinkat"
Reusing "fremovexattr" BPF sys_enter augmenter for "fchmodat"
Reusing "fremovexattr" BPF sys_enter augmenter for "faccessat"
Reusing "fremovexattr" BPF sys_enter augmenter for "utimensat"
Reusing "connect" BPF sys_enter augmenter for "accept4"
Reusing "fremovexattr" BPF sys_enter augmenter for "name_to_handle_at"
Reusing "fremovexattr" BPF sys_enter augmenter for "renameat2"
Reusing "open" BPF sys_enter augmenter for "memfd_create"
Reusing "fremovexattr" BPF sys_enter augmenter for "execveat"
Reusing "fremovexattr" BPF sys_enter augmenter for "statx"
TL;DR:
These are the new syscalls that can be augmented
Reusing "openat" BPF sys_enter augmenter for "open_tree"
Reusing "openat" BPF sys_enter augmenter for "openat2"
Reusing "openat" BPF sys_enter augmenter for "mount_setattr"
Reusing "openat" BPF sys_enter augmenter for "move_mount"
Reusing "open" BPF sys_enter augmenter for "fsopen"
Reusing "openat" BPF sys_enter augmenter for "fspick"
Reusing "openat" BPF sys_enter augmenter for "faccessat2"
Reusing "openat" BPF sys_enter augmenter for "fchmodat2"
as for the perf trace output:
before
perf $ perf trace -e faccessat2 --max-events=1
[no output]
after
perf $ ./perf trace -e faccessat2 --max-events=1
0.000 ( 0.037 ms): waybar/958 faccessat2(dfd: 40, filename: "uevent") = 0
P.S. The reason why this bug was not found in the past five years is
probably because it only happens to the newer syscalls whose id is
greater, for instance, faccessat2 of id 439, which not a lot of people
care about when using perf trace.
[Arnaldo]: notes
That and the fact that the BPF code was hidden before having to use -e,
that got changed kinda recently when we switched to using BPF skels for
augmenting syscalls in 'perf trace':
⬢[acme@toolbox perf-tools-next]$ git log --oneline tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c
|
|
Ian Rogers
|
1553419c3c |
perf dso: Fix address sanitizer build
Various files had been missed from having accessor functions added for
the sake of dso reference count checking. Add the function calls and
missing dso accessor functions.
Fixes:
|
|
|
Leo Yan
|
14b0fffa25 |
perf mem: Warn if memory events are not supported on all CPUs
It is possible that memory events are not supported on all CPUs. Prints a warning by dumping the enabled CPU maps in this case. Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: James Clark <james.clark@linaro.org> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: John Garry <john.g.garry@oracle.com> Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Link: https://lore.kernel.org/r/20240706152035.86983-3-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
|
|
Leo Yan
|
e6b4da6759 |
perf arm-spe: Support multiple Arm SPE PMUs
A platform can have more than one Arm SPE PMU. For example, a system with multiple clusters may have each cluster enabled with its own Arm SPE instance. In such case, the PMU devices will be named 'arm_spe_0', 'arm_spe_1', and so on. Currently, the tool only supports 'arm_spe_0'. This commit extends support to multiple Arm SPE PMUs by detecting the substring 'arm_spe_'. Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: James Clark <james.clark@linaro.org> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: John Garry <john.g.garry@oracle.com> Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Link: https://lore.kernel.org/r/20240706152035.86983-2-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
|
Haoze Xie
|
759ce73cf7 |
perf build x86: Fix SC2034 error in syscalltbl.sh
Change the unused var in 'arch/x86/entry/syscalls/syscalltbl.sh' to '_'
when reading from '$sorted_table'. This change allows the script to pass
tests of ShellCheck before and after version 0.7.2 at the same time.
When building in arch x86, syscalltbl.sh got a ShellCheck warning, which
makes compilation error:
In arch/x86/entry/syscalls/syscalltbl.sh line 27:
while read nr _abi name entry _compat; do
^-^ SC2034: abi appears unused.
Verify use (or export if used externally).
^----^ SC2034: compat appears unused.
Verify use (or export if used externally).
The script reads unused param abi and compat. It uses format '_xxx' to
indicate dummy vars, which won't work properly when ShellCheck <= 0.7.2.
According to SC2034, the more general way of writing is to use directly
'_' to indicate discarding vars. 'entry' is also replaced by '_' because
it just happens to be defined in emit function, otherwise it will lead
to some misunderstandings.
Link: https://www.shellcheck.net/wiki/SC2034
Signed-off-by: Haoze Xie <royenheart@gmail.com>
Signed-off-by: Yuan Tan <tanyuan@tinylab.org>
Link: https://lore.kernel.org/r/2143cab4cd8468c88860f4e5e382d0e6b4d89ac9.1720372178.git.royenheart@gmail.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
|
|
|
Haoze Xie
|
6353abd32c |
perf record: Fix memset out-of-range error
Modified the object of 'memset' from '&lost.lost' to '&lost' in
record__read_lost_samples. This allows 'memset' to access memory properly
without causing out-of-bounds problems.
The problems got from builtin-record.c are:
In file included from /usr/include/string.h:495,
from util/parse-events.h:13,
from builtin-record.c:14:
In function 'memset',
inlined from 'record__read_lost_samples' at
builtin-record.c:1958:6,
inlined from '__cmd_record.constprop' at builtin-record.c:2817:2:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:71:10: error:
'__builtin_memset' offset [17, 64] from the object at 'lost' is out
of the bounds of referenced subobject 'lost' with type
'struct perf_record_lost_samples' at offset 0 [-Werror=array-bounds]
71|return __builtin___memset_chk (__dest,__ch,__len,__bos0 (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The error arised when performing a memset operation on the 'lost' variable,
the bytes of 'sizeof(lost)' exceeds that of '&lost.lost', which are 64
and 16.
Fixes:
|
|
Madadi Vineeth Reddy
|
306f921e87 |
perf sched map: Add --fuzzy-name option for fuzzy matching in task names
The --fuzzy-name option can be used if fuzzy name matching is required. For example, "taskname" can be matched to any string that contains "taskname" as its substring. Sample output for --task-name wdav --fuzzy-name ============= . *A0 . . . . - . 131040.641346 secs A0 => wdavdaemon:62509 . A0 *B0 . . . - . 131040.641378 secs B0 => wdavdaemon:62274 . *- B0 . . . - . 131040.641379 secs *C0 . B0 . . . . . 131040.641572 secs C0 => wdavdaemon:62283 C0 . B0 . *D0 . . . 131040.641572 secs D0 => wdavdaemon:62277 C0 . B0 . D0 . *E0 . 131040.641578 secs E0 => wdavdaemon:62270 *- . B0 . D0 . E0 . 131040.641581 secs Suggested-by: Chen Yu <yu.c.chen@intel.com> Reviewed-and-tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com> Link: https://lore.kernel.org/r/20240707182716.22054-4-vineethr@linux.ibm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
|
|
Madadi Vineeth Reddy
|
9cc0afed6f |
perf sched map: Add support for multiple task names using CSV
To track the scheduling patterns of multiple tasks simultaneously, multiple task names can be specified using a comma separator without any whitespace. Sample output for --task-name perf,wdavdaemon ============= . *A0 . . . . - . 131040.641346 secs A0 => wdavdaemon:62509 . A0 *B0 . . . - . 131040.641378 secs B0 => wdavdaemon:62274 . *- B0 . . . - . 131040.641379 secs *C0 . B0 . . . . . 131040.641572 secs C0 => wdavdaemon:62283 ... . *- . . . . . . 131041.395649 secs . . . . . . . *X2 131041.403969 secs X2 => perf:70211 . . . . . . . *- 131041.404006 secs Suggested-by: Namhyung Kim <namhyung@kernel.org> Reviewed-and-tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com> Cc: Chen Yu <yu.c.chen@intel.com> Link: https://lore.kernel.org/r/20240707182716.22054-3-vineethr@linux.ibm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
|
|
Madadi Vineeth Reddy
|
3116d60910 |
perf sched map: Add task-name option to filter the output map
By default, perf sched map prints sched-in events for all the tasks which may not be required all the time as it prints lot of symbols and rows to the terminal. With --task-name option, one could specify the specific task name for which the map has to be shown. This would help in analyzing the CPU usage patterns easier for that specific task. Since multiple PID's might have the same task name, using task-name filter would be more useful for debugging. For other tasks, instead of printing the symbol, '-' is printed and the same '.' is used to represent idle. '-' is used instead of symbol for other tasks because it helps in clear visualization of task of interest and secondly the symbol itself doesn't mean anything because the sched-in of that symbol will not be printed(first sched-in contains pid and the corresponding symbol). When using the --task-name option, the sched-out time is represented by a '*-'. Since not all task sched-in events are printed, the sched-out time of the relevant task might be lost. This representation ensures that the sched-out time of the interested task is not overlooked. 6.10.0-rc1 ========== *A0 131040.639793 secs A0 => migration/0:19 *. 131040.639801 secs . => swapper:0 . *B0 131040.639830 secs B0 => migration/1:24 . *. 131040.639836 secs . . *C0 131040.640108 secs C0 => migration/2:30 . . *. 131040.640163 secs . . . *D0 131040.640386 secs D0 => migration/3:36 . . . *. 131040.640395 secs 6.10.0-rc1 + patch (--task-name wdavdaemon) ============= . *A0 . . . . - . 131040.641346 secs A0 => wdavdaemon:62509 . A0 *B0 . . . - . 131040.641378 secs B0 => wdavdaemon:62274 - *- B0 . . . - . 131040.641379 secs *C0 . B0 . . . . . 131040.641572 secs C0 => wdavdaemon:62283 C0 . B0 . *D0 . . . 131040.641572 secs D0 => wdavdaemon:62277 C0 . B0 . D0 . *E0 . 131040.641578 secs E0 => wdavdaemon:62270 *- . B0 . D0 . E0 . 131040.641581 secs . . B0 . D0 . *- . 131040.641583 secs Reviewed-and-tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com> Cc: Chen Yu <yu.c.chen@intel.com> Link: https://lore.kernel.org/r/20240707182716.22054-2-vineethr@linux.ibm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Paolo Bonzini
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c8b8b8190a |
LoongArch KVM changes for v6.11
1. Add ParaVirt steal time support. 2. Add some VM migration enhancement. 3. Add perf kvm-stat support for loongarch. -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEzOlt8mkP+tbeiYy5AoYrw/LiJnoFAmaOS6UWHGNoZW5odWFj YWlAa2VybmVsLm9yZwAKCRAChivD8uImehejD/9pACGe3h3krXLcFVWXOFIu5Hpc 5kQLP0lSPJ/o5Xs8t/oPLrnDX70z90wXI1LOmltc7h32MSwFa2l8COQh+sN5eJBQ PNyt7u7bMipp0yJS4Gl3LQQ5vklcGOSpQc/gbeXnVx8J/tz+Mo9YGGLIXVRXRM6W Ri8D2VVFiwzQQYeTpPo1u1Ob8C6mA4KOppwvhscMTM3vj4NMbsinBzRnR0lG0Tdw meFhxDPly1Ksxsbnj9UGO6UnEY0A2SLONs6MiO4y4DtoqoDlw/lbqFJuYo4vvbx1 pxtjyirD/PX/wjslQFWUOuU0hMfAodera+JupZ5BZWfcG8FltA4DQfDsm/U9RjK/ 7gGNnr8Xk2/tp6+4AVV+HU2iTgRvq+mXCL72zSy2Y4r7ElBAANDfk4n+Zn/PWisn U9wwV8Ue7tVB15BRpRsg77NzBidiCFEe/6flWYiX2y24ke71gwDJBGUy8hMdKt6t 4Cq8atsU0MvDAzfYMsK9JjskJp4UFq6wb1tXbbuADM4TDhnzlK6s6h3vM+pFlh/f my7fDH8/2qsCWhBDM4pmsJskVp+I1GOk/80RjTQISwx7iHktJWvxNYTaisK2fvD5 Qs1IUWfNFbDX0Lr0QpN6j6X4rZkghR4R6XoFkd4nkicwi+UHVn3oK9GSqv24QJn9 7+Ev3dfRTUYLd6mC4Q== =DpIK -----END PGP SIGNATURE----- Merge tag 'loongarch-kvm-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD LoongArch KVM changes for v6.11 1. Add ParaVirt steal time support. 2. Add some VM migration enhancement. 3. Add perf kvm-stat support for loongarch. |
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Guilherme Amadio
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1d302f626c |
perf build: Conditionally add feature check flags for libtrace{event,fs}
This avoids reported warnings when the packages are not installed.
[namhyung]: Removed the dummy assignment and unnecessary ifeq checks.
Fixes:
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Bibo Mao
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492ac37fa3 |
perf kvm: Add kvm-stat for loongarch64
Add support for 'perf kvm stat' on loongarch64 platform, now only kvm
exit event is supported.
Here is example output about "perf kvm --host stat report" command
Event name Samples Sample% Time (ns) Time% Mean Time (ns)
Mem Store 83969 51.00% 625697070 8.00% 7451
Mem Read 37641 22.00% 112485730 1.00% 2988
Interrupt 15542 9.00% 20620190 0.00% 1326
IOCSR 15207 9.00% 94296190 1.00% 6200
Hypercall 4873 2.00% 12265280 0.00% 2516
Idle 3713 2.00% 6322055860 87.00% 1702681
FPU 1819 1.00% 2750300 0.00% 1511
Inst Fetch 502 0.00% 1341740 0.00% 2672
Mem Modify 324 0.00% 602240 0.00% 1858
CPUCFG 55 0.00% 77610 0.00% 1411
CSR 12 0.00% 19690 0.00% 1640
LASX 3 0.00% 4870 0.00% 1623
LSX 2 0.00% 2100 0.00% 1050
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Nicolas Schier
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608c3b1e61 |
perf install: Don't propagate subdir to Documentation submake
Explicitly reset 'subdir' variable when descending to
tools/perf/Documentation. Similar to commit
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Xu Yang
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3710578d2d |
perf vendor events arm64:: Add i.MX95 DDR Performance Monitor metrics
Add JSON metrics for i.MX95 DDR Performance Monitor. Reviewed-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Ian Rogers <irogers@google.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Cc: festevam@gmail.com Cc: conor+dt@kernel.org Cc: robh+dt@kernel.org Cc: shawnguo@kernel.org Cc: will@kernel.org Cc: krzysztof.kozlowski+dt@linaro.org Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: imx@lists.linux.dev Cc: kernel@pengutronix.de Cc: s.hauer@pengutronix.de Cc: devicetree@vger.kernel.org Link: https://lore.kernel.org/r/20240529080358.703784-8-xu.yang_2@nxp.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Xu Yang
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2697b79a46 |
perf vendor events arm64:: Add i.MX93 DDR Performance Monitor metrics
Add JSON metrics for i.MX93 DDR Performance Monitor. Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Cc: festevam@gmail.com Cc: conor+dt@kernel.org Cc: robh+dt@kernel.org Cc: shawnguo@kernel.org Cc: will@kernel.org Cc: krzysztof.kozlowski+dt@linaro.org Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: imx@lists.linux.dev Cc: john.g.garry@oracle.com Cc: kernel@pengutronix.de Cc: s.hauer@pengutronix.de Cc: devicetree@vger.kernel.org Link: https://lore.kernel.org/r/20240529080358.703784-7-xu.yang_2@nxp.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Ian Rogers
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1059fb5291 |
perf dsos: When adding a dso into sorted dsos maintain the sort order
dsos__add would add at the end of the dso array possibly requiring a
later find to re-sort the array. Patterns of find then add were
becoming O(n*log n) due to the sorts. Change the add routine to be
O(n) rather than O(1) but to maintain the sorted-ness of the dsos
array so that later finds don't need the O(n*log n) sort.
Fixes:
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Ian Rogers
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feaaa8be0b |
perf comm str: Avoid sort during insert
The array is sorted, so just move the elements and insert in order.
Fixes:
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Abhishek Dubey
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2eae307ec5 |
perf report: Calling available function for stats printing
For printing dump_trace, just use existing stats_print() function. Signed-off-by: Abhishek Dubey <adubey@linux.ibm.com> Link: https://lore.kernel.org/r/20240628183224.452055-1-adubey@linux.ibm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Adrian Hunter
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b40934ae32 |
perf intel-pt: Fix exclude_guest setting
In the past, the exclude_guest setting has had no effect on Intel PT
tracing, but that may not be the case in the future.
Set the flag correctly based upon whether KVM is using Intel PT
"Host/Guest" mode, which is determined by the kvm_intel module
parameter pt_mode:
pt_mode=0 System-wide mode : host and guest output to host buffer
pt_mode=1 Host/Guest mode : host/guest output to host/guest
buffers respectively
Fixes:
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Adrian Hunter
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36b4cd990a |
perf intel-pt: Fix aux_watermark calculation for 64-bit size
aux_watermark is a u32. For a 64-bit size, cap the aux_watermark
calculation at UINT_MAX instead of truncating it to 32-bits.
Fixes:
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Namhyung Kim
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74ad3cb08b |
Merge remote-tracking branch 'perf-tools' into perf-tools-next
Merge fixes and updates in v6.10 into perf-tools-next to resolve changes in synthesizing the LOST_SAMPLES records and build fixes. Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Madadi Vineeth Reddy
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a7cacaa088 |
perf sched replay: Fix -r/--repeat command line option for infinity
Currently, the -r/--repeat option accepts values from 0 and complains for -1. The help section specifies: -r, --repeat <n> repeat the workload replay N times (-1: infinite) The -r -1 option raises an error because replay_repeat is defined as an unsigned int. In the current implementation, the workload is repeated n times when -r <n> is used, except when n is 0. When -r is set to 0, the workload is also repeated once. This happens because when -r=0, the run_one_test function is not called. (Note that mutex unlocking, which is essential for child threads spawned to emulate the workload, happens in run_one_test.) However, mutex unlocking is still performed in the destroy_tasks function. Thus, -r=0 results in the workload running once coincidentally. To clarify and maintain the existing logic for -r >= 1 (which runs the workload the specified number of times) and to fix the issue with infinite runs, make -r=0 perform an infinite run. Reviewed-by: James Clark <james.clark@arm.com> Signed-off-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Link: https://lore.kernel.org/r/20240628071821.15264-1-vineethr@linux.ibm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Yang Li
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5484fd2767 |
perf: pmus: Remove unneeded semicolon
./tools/perf/util/pmu.c:1776:49-50: Unneeded semicolon Reported-by: Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9443 Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/r/20240628053049.44521-1-yang.lee@linux.alibaba.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Namhyung Kim
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b195701e9f |
perf stat: Use field separator in the metric header
It didn't use the passed field separator (using -x option) when it prints the metric headers and always put "," between the fields. Before: $ sudo ./perf stat -a -x : --per-core -M tma_core_bound --metric-only true core,cpus,% tma_core_bound: <<<--- here: "core,cpus," but ":" expected S0-D0-C0:2:10.5: S0-D0-C1:2:14.8: S0-D0-C2:2:9.9: S0-D0-C3:2:13.2: After: $ sudo ./perf stat -a -x : --per-core -M tma_core_bound --metric-only true core:cpus:% tma_core_bound: S0-D0-C0:2:10.5: S0-D0-C1:2:15.0: S0-D0-C2:2:16.5: S0-D0-C3:2:12.5: Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/r/20240628000604.1296808-2-namhyung@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
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Namhyung Kim
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caa463bb79 |
perf stat: Fix a segfault with --per-cluster --metric-only
The new --per-cluster option was added recently but it forgot to update
the aggr_header fields which are used for --metric-only option. And it
resulted in a segfault due to NULL string in fputs().
Fixes:
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