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* treewide: remove meaningless assignments in MakefilesMasahiro Yamada2024-02-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In Makefiles, $(error ), $(warning ), and $(info ) expand to the empty string, as explained in the GNU Make manual [1]: "The result of the expansion of this function is the empty string." Therefore, they are no-op except for logging purposes. $(shell ...) expands to the output of the command. It expands to the empty string when the command does not print anything to stdout. Hence, $(shell mkdir ...) is no-op except for creating the directory. Remove meaningless assignments. [1]: https://www.gnu.org/software/make/manual/make.html#Make-Control-Functions Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20240221134201.2656908-1-masahiroy@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org
* perf s390: Move syscall.tbl check into check-headers.shTiezhu Yang2020-12-241-4/+0
| | | | | | | | | | | | | | | | | It is better to check syscall.tbl for s390 in check-headers.sh, it is similar with commit c9b51a017065 ("perf tools: Move syscall_64.tbl check into check-headers.sh"). Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Xuefeng Li <lixuefeng@loongson.cn> Link: http://lore.kernel.org/lkml/1608278364-6733-3-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf jvmti: Include JVMTI support for s390Thomas Richter2019-09-251-0/+1
| | | | | | | | | | | Enable JVMTI support for s390 perf tool chain. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Link: http://lore.kernel.org/lkml/20190909114116.50469-3-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner2019-05-211-0/+1
| | | | | | | | | | | | | | Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* perf s390: Rework system call table creation by using syscall.tblHendrik Brueckner2018-02-151-3/+7
| | | | | | | | | | | | | | | Recently, s390 uses a syscall.tbl input file to generate its system call table and unistd uapi header files. Hence, update mksyscalltbl to use it as input to create the system table for perf. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: linux-s390@vger.kernel.org LPU-Reference: 1518090470-2899-4-git-send-email-brueckner@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-bdyhllhsq1zgxv2qx4m377y6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf s390: Generate system call table from asm/unistd.hHendrik Brueckner2017-12-271-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This should speed up accessing new system calls introduced with the kernel rather than waiting for libaudit updates to include them. Committer testing: $ rm -rf /tmp/build/perf $ mkdir /tmp/build/perf $ make srctree=/home/acme/git/perf -C tools/perf/arch/s390 OUTPUT=/tmp/build/perf/ archheaders make: Entering directory '/home/acme/git/perf/tools/perf/arch/s390' /bin/sh '/home/acme/git/perf/tools/perf/arch/s390/entry/syscalls//mksyscalltbl' 'cc' /home/acme/git/perf/tools/arch/s390/include/uapi/asm/unistd.h > /tmp/build/perf/arch/s390/include/generated/asm/syscalls_64.c make: Leaving directory '/home/acme/git/perf/tools/perf/arch/s390' $ head -5 /tmp/build/perf/arch/s390/include/generated/asm/syscalls_64.c static const char *syscalltbl_s390_64[] = { [1] = "exit", [2] = "fork", [3] = "read", [4] = "write", $ tail -5 /tmp/build/perf/arch/s390/include/generated/asm/syscalls_64.c [378] = "s390_guarded_storage", [379] = "statx", [380] = "s390_sthyi", }; #define SYSCALLTBL_S390_64_MAX_ID 380 $ Now to plug this into 'perf trace' proper. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: linux-s390@vger.kernel.org LPU-Reference: 1512635281-20733-2-git-send-email-brueckner@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-h5km60rdg3rqxvsys85q50l3@git.kernel.org [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf s390: add regs_query_register_offset()Hendrik Brueckner2017-12-051-0/+1
| | | | | | | | | | | | | | | | | | | The regs_query_register_offset() helper function converts register name like "%r0" to an offset of a register in user_pt_regs It is required by the BPF prologue generator. The user_pt_regs structure was recently added to "asm/ptrace.h". Hence, update tools/perf/check-headers.sh to keep the header file in sync with kernel changes. Suggested-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-and-tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
* perf build: Add arch s390 objects buildingJiri Olsa2015-02-121-3/+0
| | | | | | | | | | | | | | | | | | | | Move the s390 arch objects building under build framework to be included in the libperf build object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by: Will Deacon <will.deacon@arm.com> Cc: Alexis Berlemont <alexis.berlemont@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-8f5tlfwegkirhir2ffz8nw3i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf kvm: Add stat support on s390Alexander Yarygin2014-07-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | On s390, the vmexit event has a tree-like structure: between exit_event_begin and exit_event_end several other events may happen and with each of them refining the previous ones. This patch adds a decoder for such events to the generic code and also the files <asm/kvm_perf.h> and kvm-stat.c for s390. Commands 'perf kvm stat record', 'report' and 'live' are supported. Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1404397747-20939-5-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Allow to use cpuinfo on s390Alexander Yarygin2014-07-071-0/+1
| | | | | | | | | | | | | | | | | This patch defines CPUINFO_PROC for s390 and implements get_cpuid(). Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/87ioneo7qh.wl%yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* [S390] perf: add DWARF register lookup for s390Heiko Carstens2011-01-051-0/+4
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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