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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 <[email protected]>
Reviewed-by: Arnaldo Carvalho de Melo <[email protected]>
Reviewed-by: Ian Rogers <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
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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 <[email protected]>
Reviewed-by: Naveen N. Rao <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Xuefeng Li <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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Enable JVMTI support for s390 perf tool chain.
Signed-off-by: Thomas Richter <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Hendrik Brueckner <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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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 <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: Thomas Richter <[email protected]>
Cc: [email protected]
LPU-Reference: [email protected]
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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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 <[email protected]>
Reviewed-by: Thomas Richter <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: [email protected]
LPU-Reference: [email protected]
Link: https://lkml.kernel.org/n/[email protected]
[ split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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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 <[email protected]>
Signed-off-by: Hendrik Brueckner <[email protected]>
Reviewed-and-tested-by: Thomas Richter <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Heiko Carstens <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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Move the s390 arch objects building under build framework to be included
in the libperf build object.
Signed-off-by: Jiri Olsa <[email protected]>
Tested-by: Sukadev Bhattiprolu <[email protected]>
Tested-by: Will Deacon <[email protected]>
Cc: Alexis Berlemont <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Corey Ashford <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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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 <[email protected]>
Signed-off-by: Alexander Yarygin <[email protected]>
Acked-by: Christian Borntraeger <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: Cornelia Huck <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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This patch defines CPUINFO_PROC for s390 and implements get_cpuid().
Reviewed-by: Cornelia Huck <[email protected]>
Reviewed-by: David Ahern <[email protected]>
Signed-off-by: Alexander Yarygin <[email protected]>
Acked-by: Christian Borntraeger <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: Cornelia Huck <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/87ioneo7qh.wl%[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
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