linux/tools/perf/trace, branch v5.5

perf beauty: Add CLEAR_SIGHAND support for clone's flags arg

2019-12-02T18:19:52Z

Add support for the recently added CLONE_CLEAR_SIGHAND flag. This takes advantage of the copy of the uapi/linux/sched.h we have in tools/include, which allows us to build tools/perf in older systems and have the binary support printing that flag whenever that system gets its kernel updated to one where this feature is present. Cc: Adrian Hunter Cc: Adrian Reber Cc: Christian Brauner Cc: Jiri Olsa Cc: Namhyung Kim

perf trace: Wire up strarray__strtoul_flags()

2019-10-19T18:35:02Z

Now anything that uses STRARRAY_FLAGS, like the 'fsmount' syscall will support mapping or-ed strings back to a value that can be used in a filter. In some cases, where STRARRAY_FLAGS isn't used but instead the scnprintf is a special one because of specific needs, like for mmap, then one has to set the ->pars to the strarray. See the next cset. Cc: Adrian Hunter Cc: Andi Kleen Cc: Brendan Gregg Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-r2lpqo7dfsrhi4ll0npsb3u7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libbeauty: Introduce strarray__strtoul_flags()

2019-10-19T18:35:02Z

Counterpart of strarray__scnprintf_flags(), i.e. from a expression like: # perf trace -e syscalls:sys_enter_mmap --filter="flags==PRIVATE|FIXED|DENYWRITE" I.e. that "flags==PRIVATE|FIXED|DENYWRITE", turn that into # perf trace -e syscalls:sys_enter_mmap --filter=0x812 Cc: Adrian Hunter Cc: Andi Kleen Cc: Brendan Gregg Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-8xst3zrqqogax7fmfzwymvbl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libbeauty: Make the mmap_flags strarray visible outside of its beautifier

2019-10-19T18:35:02Z

So that we can later use it with the strarray__strtoul_flags() routine that will be soon introduced. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-vldj3ch8su6i20to5eq31e8x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libbeauty: Introduce syscall_arg__strtoul_strarrays()

2019-10-19T18:35:01Z

To allow going from string to integer for 'struct strarrays'. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-b1ia3xzcy72hv0u4m168fcd0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libbeauty: Introduce syscall_arg__strtoul_strarray()

2019-10-18T15:07:46Z

To go from strarrays strings to its indexes. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-wta0qvo207z27huib2c4ijxq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty: Add the glue for the autogenerated x86 IRQ vector array

2019-10-15T19:13:27Z

We need to wrap this autogenerated string array with the strarray__scnprintf() formatter and the strarray__strotul() lookup method, do it. Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-bx2cjcyv6aerhyy3gvu3uwcy@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libbeauty: Add a strarray__scnprintf_suffix() method

2019-10-15T19:01:42Z

In some cases, like with x86 IRQ vectors, the common part in names is at the end, so a suffix, add a scnprintf function for that. Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-agxbj6es2ke3rehwt4gkdw23@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libbeauty: Add a generator for x86's IRQ vectors -> strings

2019-10-15T18:42:44Z

We'll wire this up with the 'vector' arg in irq_vectors:*, etc: Just run it straight away and check what it produces: $ tools/perf/trace/beauty/tracepoints/x86_irq_vectors.sh static const char *x86_irq_vectors[] = { [0x02] = "NMI", [0x12] = "MCE", [0x20] = "IRQ_MOVE_CLEANUP", [0x80] = "IA32_SYSCALL", [0xec] = "LOCAL_TIMER", [0xed] = "HYPERV_STIMER0", [0xee] = "HYPERV_REENLIGHTENMENT", [0xef] = "MANAGED_IRQ_SHUTDOWN", [0xf0] = "POSTED_INTR_NESTED", [0xf1] = "POSTED_INTR_WAKEUP", [0xf2] = "POSTED_INTR", [0xf3] = "HYPERVISOR_CALLBACK", [0xf4] = "DEFERRED_ERROR", [0xf6] = "IRQ_WORK", [0xf7] = "X86_PLATFORM_IPI", [0xf8] = "REBOOT", [0xf9] = "THRESHOLD_APIC", [0xfa] = "THERMAL_APIC", [0xfb] = "CALL_FUNCTION_SINGLE", [0xfc] = "CALL_FUNCTION", [0xfd] = "RESCHEDULE", [0xfe] = "ERROR_APIC", [0xff] = "SPURIOUS_APIC", }; $ Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-cpl1pa7kkwn0llufi5qw4li8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace: Support tracepoint dynamic char arrays

2019-10-15T16:03:58Z

Things like: # grep __data_loc /sys/kernel/debug/tracing/events/sched/sched_process_exec/format field:__data_loc char[] filename; offset:8; size:4; signed:1; # That, at that offset (8) and with that size(8) have an integer that contains the real length and offset for the contents of that array. Now this works: # perf trace --max-events 1 -e sched:*exec -a 0.000 sed/19441 sched:sched_process_exec(filename: "/usr/bin/sync", pid: 19441 (sync), old_pid: 19441 (sync)) # As when using the libtraceevent based beautifier: # perf trace --libtraceevent --max-events 1 -e sched:*exec -a 0.000 sync/19463 sched:sched_process_exec(filename=/usr/bin/sync pid=19463 old_pid=19463) # I.e. that 'filename' is implemented as a dynamic char array. Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-950p0m842fe6n7sxsdwqj5i2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo