linux/tools/perf/trace, branch v5.9

perf trace beauty: Use the autogenerated protocol family table

2020-08-12T11:43:51Z

That helps us not to lose new protocol families when they are introduced, replacing that hardcoded, dated family->string table. To recap what this allows us to do: # perf trace -e syscalls:sys_enter_socket/max-stack=10/ --filter=family==INET --max-events=1 0.000 fetchmail/41097 syscalls:sys_enter_socket(family: INET, type: DGRAM|CLOEXEC|NONBLOCK, protocol: IP) __GI___socket (inlined) reopen (/usr/lib64/libresolv-2.31.so) send_dg (/usr/lib64/libresolv-2.31.so) __res_context_send (/usr/lib64/libresolv-2.31.so) __GI___res_context_query (inlined) __GI___res_context_search (inlined) _nss_dns_gethostbyname4_r (/usr/lib64/libnss_dns-2.31.so) gaih_inet.constprop.0 (/usr/lib64/libc-2.31.so) __GI_getaddrinfo (inlined) [0x15cb2] (/usr/bin/fetchmail) # More work is still needed to allow for the more natura strace-like syscall name usage instead of the trace event name: # perf trace -e socket/max-stack=10,family==INET/ --max-events=1 I.e. to allow for modifiers to follow the syscall name and for logical expressions to be accepted as filters to use with that syscall, be it as trace event filters or BPF based ones. Using -v we can see how the trace event filter is built: # perf trace -v -e syscalls:sys_enter_socket/call-graph=dwarf/ --filter=family==INET --max-events=2 New filter for syscalls:sys_enter_socket: (family==0x2) && (common_pid != 41384 && common_pid != 2836) $ tools/perf/trace/beauty/socket.sh | grep -w 2 [2] = "INET", $ Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty: Add script to autogenerate socket families table

2020-08-12T11:38:36Z

To use with 'perf trace', to convert the protocol families to strings, e.g: $ tools/perf/trace/beauty/socket.sh static const char *socket_families[] = { [0] = "UNSPEC", [1] = "LOCAL", [2] = "INET", [3] = "AX25", [4] = "IPX", [5] = "APPLETALK", [6] = "NETROM", [7] = "BRIDGE", [8] = "ATMPVC", [9] = "X25", [10] = "INET6", [11] = "ROSE", [12] = "DECnet", [13] = "NETBEUI", [14] = "SECURITY", [15] = "KEY", [16] = "NETLINK", [17] = "PACKET", [18] = "ASH", [19] = "ECONET", [20] = "ATMSVC", [21] = "RDS", [22] = "SNA", [23] = "IRDA", [24] = "PPPOX", [25] = "WANPIPE", [26] = "LLC", [27] = "IB", [28] = "MPLS", [29] = "CAN", [30] = "TIPC", [31] = "BLUETOOTH", [32] = "IUCV", [33] = "RXRPC", [34] = "ISDN", [35] = "PHONET", [36] = "IEEE802154", [37] = "CAIF", [38] = "ALG", [39] = "NFC", [40] = "VSOCK", [41] = "KCM", [42] = "QIPCRTR", [43] = "SMC", [44] = "XDP", }; $ This uses a copy of include/linux/socket.h that is kept in a directory to be used just for these table generation scripts and for checking if the kernel has a new file that maybe gets something new for these tables. This allows us to: - Avoid accessing files outside tools/, in the kernel sources, that may be changed in unexpected ways and thus break these scripts. - Notice when those files change and thus check if the changes don't break those scripts, update them to automatically get the new definitions, a new socket family, for instance. - Not add then to the tools/include/ where it may end up used while building the tools and end up requiring dragging yet more stuff from the kernel or plain break the build in some of the myriad environments where perf may be built. This will replace the previous static array in tools/perf/ that was dated and was already missing the AF_KCM, AF_QIPCRTR, AF_SMC and AF_XDP families. The next cset will wire this up to the perf build process. At some point this must be made into a library to be used in places such as libtraceevent, bpftrace, etc. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Steven Rostedt Signed-off-by: Arnaldo Carvalho de Melo

perf beauty: Add support to STATX_MNT_ID in the 'statx' syscall 'mask' argument

2020-06-09T15:40:03Z

Introduced in: fa2fcf4f1df1 ("statx: add mount ID") Cc: Adrian Hunter Cc: Jiri Olsa Cc: Miklos Szeredi Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf beauty: Allow the CC used in the arch errno names script to acccept CFLAGS

2020-05-28T13:03:26Z

Allow the CC compiler to accept a CFLAGS environment variable. This doesn't change the code generated but makes it easier to integrate running the shell script in build systems like bazel. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexios Zavras Cc: Andi Kleen Cc: Greg Kroah-Hartman Cc: Igor Lubashev Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Nick Desaulniers Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Wei Li Link: http://lore.kernel.org/lkml/20200306071110.130202-4-irogers@google.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo

perf trace: Fix the selection for architectures to generate the errno name tables

2020-05-28T13:03:26Z

Make the architecture test directory agree with the code comment. Committer notes: This was split from a larger patch. The code was assuming the developer always worked from tools/perf/, so make sure we do the test -d having $toolsdir/perf/arch/$arch, to match the intent expressed in the comment, just above that loop. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexios Zavras Cc: Andi Kleen Cc: Greg Kroah-Hartman Cc: Igor Lubashev Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Nick Desaulniers Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Wei Li Link: http://lore.kernel.org/lkml/20200306071110.130202-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/mman.h with the kernel

2020-04-14T12:04:53Z

To get the changes in: e346b3813067 ("mm/mremap: add MREMAP_DONTUNMAP to mremap()") Add that to 'perf trace's mremap 'flags' decoder. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/mman.h' differs from latest version at 'include/uapi/linux/mman.h' diff -u tools/include/uapi/linux/mman.h include/uapi/linux/mman.h Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Brian Geffon Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync sched.h with the kernel

2020-04-14T12:01:08Z

To get the changes in: ef2c41cf38a7 ("clone3: allow spawning processes into cgroups") Add that to 'perf trace's clone 'flags' decoder. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/sched.h' differs from latest version at 'include/uapi/linux/sched.h' diff -u tools/include/uapi/linux/sched.h include/uapi/linux/sched.h Cc: Adrian Hunter Cc: Christian Brauner Cc: Jiri Olsa Cc: Namhyung Kim Cc: Tejun Heo Signed-off-by: Arnaldo Carvalho de Melo

perf beauty prctl: Export the 'options' strarray

2020-02-11T19:41:50Z

So that we can use it with strtoul, allowing string to number conversions in filter expressions. Cc: Adrian Hunter Cc: Christian Brauner Cc: Jiri Olsa Cc: Mike Christie Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf beauty sockaddr: Fix augmented syscall format warning

2020-01-14T15:42:26Z

The sockaddr related examples given in `tools/perf/examples/bpf/augmented_syscalls.c` almost always use `long`s to represent most of their fields. However, `size_t syscall_arg__scnprintf_sockaddr(..)` has a `scnprintf` call that uses `"%#x"` as format string. This throws a warning (whenever the syscall argument is `unsigned long`). Added `l` identifier to indicate that the `arg->value` is an unsigned long. Not sure about the complications of this with x86 though. Signed-off-by: Cengiz Can Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20200113174438.102975-1-cengiz@kernel.wtf Signed-off-by: Arnaldo Carvalho de Melo

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