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2020-03-04perf annotate: Get rid of annotation->nr_jumpsRavi Bangoria
The 'nr_jumps' field in 'struct annotation' is not used since it's inception in commit 2402e4a936a0 ("perf annotate browser: Show 'jumpy' functions"). Get rid of it. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20200204045233.474937-7-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-04perf llvm: Add debug hint message about missing kernel-devel packageArnaldo Carvalho de Melo
To help in debugging, add this extra message: detect_kbuild_dir: Couldn't find "/lib/modules/5.4.20-200.fc31.x86_64/build/include/generated/autoconf.h", missing kernel-devel package?. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-04perf stat: Show percore counts in per CPU outputJin Yao
We have supported the event modifier "percore" which sums up the event counts for all hardware threads in a core and show the counts per core. For example, # perf stat -e cpu/event=cpu-cycles,percore/ -a -A -- sleep 1 Performance counter stats for 'system wide': S0-D0-C0 395,072 cpu/event=cpu-cycles,percore/ S0-D0-C1 851,248 cpu/event=cpu-cycles,percore/ S0-D0-C2 954,226 cpu/event=cpu-cycles,percore/ S0-D0-C3 1,233,659 cpu/event=cpu-cycles,percore/ This patch provides a new option "--percore-show-thread". It is used with event modifier "percore" together to sum up the event counts for all hardware threads in a core but show the counts per hardware thread. This is essentially a replacement for the any bit (which is gone in Icelake). Per core counts are useful for some formulas, e.g. CoreIPC. The original percore version was inconvenient to post process. This variant matches the output of the any bit. With this patch, for example, # perf stat -e cpu/event=cpu-cycles,percore/ -a -A --percore-show-thread -- sleep 1 Performance counter stats for 'system wide': CPU0 2,453,061 cpu/event=cpu-cycles,percore/ CPU1 1,823,921 cpu/event=cpu-cycles,percore/ CPU2 1,383,166 cpu/event=cpu-cycles,percore/ CPU3 1,102,652 cpu/event=cpu-cycles,percore/ CPU4 2,453,061 cpu/event=cpu-cycles,percore/ CPU5 1,823,921 cpu/event=cpu-cycles,percore/ CPU6 1,383,166 cpu/event=cpu-cycles,percore/ CPU7 1,102,652 cpu/event=cpu-cycles,percore/ We can see counts are duplicated in CPU pairs (CPU0/CPU4, CPU1/CPU5, CPU2/CPU6, CPU3/CPU7). The interval mode also works. For example, # perf stat -e cpu/event=cpu-cycles,percore/ -a -A --percore-show-thread -I 1000 # time CPU counts unit events 1.000425421 CPU0 925,032 cpu/event=cpu-cycles,percore/ 1.000425421 CPU1 430,202 cpu/event=cpu-cycles,percore/ 1.000425421 CPU2 436,843 cpu/event=cpu-cycles,percore/ 1.000425421 CPU3 1,192,504 cpu/event=cpu-cycles,percore/ 1.000425421 CPU4 925,032 cpu/event=cpu-cycles,percore/ 1.000425421 CPU5 430,202 cpu/event=cpu-cycles,percore/ 1.000425421 CPU6 436,843 cpu/event=cpu-cycles,percore/ 1.000425421 CPU7 1,192,504 cpu/event=cpu-cycles,percore/ If we offline CPU5, the result is: # perf stat -e cpu/event=cpu-cycles,percore/ -a -A --percore-show-thread -- sleep 1 Performance counter stats for 'system wide': CPU0 2,752,148 cpu/event=cpu-cycles,percore/ CPU1 1,009,312 cpu/event=cpu-cycles,percore/ CPU2 2,784,072 cpu/event=cpu-cycles,percore/ CPU3 2,427,922 cpu/event=cpu-cycles,percore/ CPU4 2,752,148 cpu/event=cpu-cycles,percore/ CPU6 2,784,072 cpu/event=cpu-cycles,percore/ CPU7 2,427,922 cpu/event=cpu-cycles,percore/ 1.001416041 seconds time elapsed v4: --- Ravi Bangoria reports an issue in v3. Once we offline a CPU, the output is not correct. The issue is we should use the cpu idx in print_percore_thread rather than using the cpu value. v3: --- 1. Fix the interval mode output error 2. Use cpu value (not cpu index) in config->aggr_get_id(). 3. Refine the code according to Jiri's comments. v2: --- Add the explanation in change log. This is essentially a replacement for the any bit. No code change. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200214080452.26402-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-04tools lib api fs: Move cgroupsfs_find_mountpoint()Namhyung Kim
Move it from tools/perf/util/cgroup.c as it can be used by other places. Note that cgroup filesystem is different from others since it's usually mounted separately (in v1) for each subsystem. I just copied the code with a little modification to pass a name of subsystem. Suggested-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200127100031.1368732-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-04perf diff: Fix undefined string comparison spotted by clang's -Wstring-compareNick Desaulniers
clang warns: util/block-info.c:298:18: error: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Werror,-Wstring-compare] if ((start_line != SRCLINE_UNKNOWN) && (end_line != SRCLINE_UNKNOWN)) { ^ ~~~~~~~~~~~~~~~ util/block-info.c:298:51: error: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Werror,-Wstring-compare] if ((start_line != SRCLINE_UNKNOWN) && (end_line != SRCLINE_UNKNOWN)) { ^ ~~~~~~~~~~~~~~~ util/block-info.c:298:18: error: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Werror,-Wstring-compare] if ((start_line != SRCLINE_UNKNOWN) && (end_line != SRCLINE_UNKNOWN)) { ^ ~~~~~~~~~~~~~~~ util/block-info.c:298:51: error: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Werror,-Wstring-compare] if ((start_line != SRCLINE_UNKNOWN) && (end_line != SRCLINE_UNKNOWN)) { ^ ~~~~~~~~~~~~~~~ util/map.c:434:15: error: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Werror,-Wstring-compare] if (srcline != SRCLINE_UNKNOWN) ^ ~~~~~~~~~~~~~~~ Reviewer Notes: Looks good to me. Some more context: https://clang.llvm.org/docs/DiagnosticsReference.html#wstring-compare The spec says: J.1 Unspecified behavior The following are unspecified: .. Whether two string literals result in distinct arrays (6.4.5). Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Keeping <john@metanate.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: clang-built-linux@googlegroups.com Link: https://github.com/ClangBuiltLinux/linux/issues/900 Link: http://lore.kernel.org/lkml/20200223193456.25291-1-nick.desaulniers@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-04Merge tag 'perf-urgent-for-mingo-5.6-20200303' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: perf symbols: Arnaldo Carvalho de Melo: - Don't try to find a vmlinux file when looking for kernel modules, fixing symbol resolution in systems with compressed kernel modules. perf env: Arnaldo Carvalho de Melo: - Do not return pointers to local variables, fixing valid warning from gcc 10 for corner case that stops the build due to -Werror. perf tests: Arnaldo Carvalho de Melo: - Make global variable static in the bp_account entry to fix build with gcc 10. perf parse-events: Arnaldo Carvalho de Melo: - Use asprintf() instead of strncpy() to read tracepoint files, addressing compiler warning that stops the build as we use -Werror. perf bench: Arnaldo Carvalho de Melo: - Share some global variables to fix build with gcc 10. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-03-03perf symbols: Don't try to find a vmlinux file when looking for kernel modulesArnaldo Carvalho de Melo
The dso->kernel value is now set to everything that is in machine->kmaps, but that was being used to decide if vmlinux lookup is needed, which ended up making that lookup be made for kernel modules, that now have dso->kernel set, leading to these kinds of warnings when running on a machine with compressed kernel modules, like fedora:31: [root@five ~]# perf record -F 10000 -a sleep 2 [ perf record: Woken up 1 times to write data ] lzma: fopen failed on vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /usr/lib/debug/boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /lib/modules/5.5.5-200.fc31.x86_64/build/vmlinux: 'No such file or directory' lzma: fopen failed on vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /usr/lib/debug/boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /lib/modules/5.5.5-200.fc31.x86_64/build/vmlinux: 'No such file or directory' lzma: fopen failed on vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /usr/lib/debug/boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /lib/modules/5.5.5-200.fc31.x86_64/build/vmlinux: 'No such file or directory' lzma: fopen failed on vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /usr/lib/debug/boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /lib/modules/5.5.5-200.fc31.x86_64/build/vmlinux: 'No such file or directory' lzma: fopen failed on vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux: 'No such file or directory' lzma: fopen failed on /boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /usr/lib/debug/boot/vmlinux-5.5.5-200.fc31.x86_64: 'No such file or directory' lzma: fopen failed on /lib/modules/5.5.5-200.fc31.x86_64/build/vmlinux: 'No such file or directory' [ perf record: Captured and wrote 1.024 MB perf.data (1366 samples) ] [root@five ~]# This happens when collecting the buildid, when we find samples for kernel modules, fix it by checking if the looked up DSO is a kernel module by other means. Fixes: 02213cec64bb ("perf maps: Mark module DSOs with kernel type") Tested-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lore.kernel.org/lkml/20200302191007.GD10335@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-03perf bench: Share some global variables to fix build with gcc 10Arnaldo Carvalho de Melo
Noticed with gcc 10 (fedora rawhide) that those variables were not being declared as static, so end up with: ld: /tmp/build/perf/bench/epoll-wait.o:/git/perf/tools/perf/bench/epoll-wait.c:93: multiple definition of `end'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here ld: /tmp/build/perf/bench/epoll-wait.o:/git/perf/tools/perf/bench/epoll-wait.c:93: multiple definition of `start'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here ld: /tmp/build/perf/bench/epoll-wait.o:/git/perf/tools/perf/bench/epoll-wait.c:93: multiple definition of `runtime'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here ld: /tmp/build/perf/bench/epoll-ctl.o:/git/perf/tools/perf/bench/epoll-ctl.c:38: multiple definition of `end'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here ld: /tmp/build/perf/bench/epoll-ctl.o:/git/perf/tools/perf/bench/epoll-ctl.c:38: multiple definition of `start'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here ld: /tmp/build/perf/bench/epoll-ctl.o:/git/perf/tools/perf/bench/epoll-ctl.c:38: multiple definition of `runtime'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here make[4]: *** [/git/perf/tools/build/Makefile.build:145: /tmp/build/perf/bench/perf-in.o] Error 1 Prefix those with bench__ and add them to bench/bench.h, so that we can share those on the tools needing to access those variables from signal handlers. Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200303155811.GD13702@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-02perf parse-events: Use asprintf() instead of strncpy() to read tracepoint filesArnaldo Carvalho de Melo
Make the code more compact by using asprintf() instead of malloc()+strncpy() which also uses less memory and avoids these warnings with gcc 10: CC /tmp/build/perf/util/cloexec.o In file included from /usr/include/string.h:495, from util/parse-events.h:12, from util/parse-events.c:18: In function ‘strncpy’, inlined from ‘tracepoint_id_to_path’ at util/parse-events.c:271:5: /usr/include/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ offset [275, 511] from the object at ‘sys_dirent’ is out of the bounds of referenced subobject ‘d_name’ with type ‘char[256]’ at offset 19 [-Werror=array-bounds] 106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /usr/include/dirent.h:61, from util/parse-events.c:5: util/parse-events.c: In function ‘tracepoint_id_to_path’: /usr/include/bits/dirent.h:33:10: note: subobject ‘d_name’ declared here 33 | char d_name[256]; /* We must not include limits.h! */ | ^~~~~~ In file included from /usr/include/string.h:495, from util/parse-events.h:12, from util/parse-events.c:18: In function ‘strncpy’, inlined from ‘tracepoint_id_to_path’ at util/parse-events.c:273:5: /usr/include/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ offset [275, 511] from the object at ‘evt_dirent’ is out of the bounds of referenced subobject ‘d_name’ with type ‘char[256]’ at offset 19 [-Werror=array-bounds] 106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /usr/include/dirent.h:61, from util/parse-events.c:5: util/parse-events.c: In function ‘tracepoint_id_to_path’: /usr/include/bits/dirent.h:33:10: note: subobject ‘d_name’ declared here 33 | char d_name[256]; /* We must not include limits.h! */ | ^~~~~~ CC /tmp/build/perf/util/call-path.o Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200302145535.GA28183@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-02perf env: Do not return pointers to local variablesArnaldo Carvalho de Melo
It is possible to return a pointer to a local variable when looking up the architecture name for the running system and no normalization is done on that value, i.e. we may end up returning the uts.machine local variable. While this doesn't happen on most arches, as normalization takes place, lets fix this by making that a static variable and optimize it a bit by not always running uname(), only the first time. Noticed in fedora rawhide running with: [perfbuilder@a5ff49d6e6e4 ~]$ gcc --version gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8) Reported-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-02perf tests bp_account: Make global variable staticArnaldo Carvalho de Melo
To fix the build with newer gccs, that without this patch exit with: LD /tmp/build/perf/tests/perf-in.o ld: /tmp/build/perf/tests/bp_account.o:/git/perf/tools/perf/tests/bp_account.c:22: multiple definition of `the_var'; /tmp/build/perf/tests/bp_signal.o:/git/perf/tools/perf/tests/bp_signal.c:38: first defined here make[4]: *** [/git/perf/tools/build/Makefile.build:145: /tmp/build/perf/tests/perf-in.o] Error 1 First noticed in fedora:rawhide/32 with: [perfbuilder@a5ff49d6e6e4 ~]$ gcc --version gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8) Reported-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-02Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "No kernel side changes, all tooling fixes plus two tooling cleanups that were committed late in the merge window alongside the perf annotate fixes, delayed by Arnaldo's European trip" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) perf annotate: Fix segfault with source toggle perf annotate: Align struct annotate_args perf annotate: Simplify disasm_line allocation and freeing code perf annotate: Remove privsize from symbol__annotate() args perf probe: Check return value of strlist__add() for -ENOMEM perf config: Document missing config options perf annotate: Fix perf config option description perf annotate: Prefer cmdline option over default config perf annotate: Make perf config effective perf config: Introduce perf_config_u8() perf annotate: Fix --show-nr-samples for tui/stdio2 perf annotate: Fix --show-total-period for tui/stdio2 perf annotate/tui: Re-render title bar after switching back from script browser tools headers UAPI: Update tools's copy of kvm.h headers tools arch x86: Sync the msr-index.h copy with the kernel sources perf arch powerpc: Sync powerpc syscall.tbl with the kernel sources perf auxtrace: Add auxtrace_record__read_finish() perf arm-spe: Fix endless record after being terminated perf cs-etm: Fix endless record after being terminated perf intel-bts: Fix endless record after being terminated ...
2020-02-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix leak in nl80211 AP start where we leak the ACL memory, from Johannes Berg. 2) Fix double mutex unlock in mac80211, from Andrei Otcheretianski. 3) Fix RCU stall in ipset, from Jozsef Kadlecsik. 4) Fix devlink locking in devlink_dpipe_table_register, from Madhuparna Bhowmik. 5) Fix race causing TX hang in ll_temac, from Esben Haabendal. 6) Stale eth hdr pointer in br_dev_xmit(), from Nikolay Aleksandrov. 7) Fix TX hash calculation bounds checking wrt. tc rules, from Amritha Nambiar. 8) Size netlink responses properly in schedule action code to take into consideration TCA_ACT_FLAGS. From Jiri Pirko. 9) Fix firmware paths for mscc PHY driver, from Antoine Tenart. 10) Don't register stmmac notifier multiple times, from Aaro Koskinen. 11) Various rmnet bug fixes, from Taehee Yoo. 12) Fix vsock deadlock in vsock transport release, from Stefano Garzarella. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (61 commits) net: dsa: mv88e6xxx: Fix masking of egress port mlxsw: pci: Wait longer before accessing the device after reset sfc: fix timestamp reconstruction at 16-bit rollover points vsock: fix potential deadlock in transport->release() unix: It's CONFIG_PROC_FS not CONFIG_PROCFS net: rmnet: fix packet forwarding in rmnet bridge mode net: rmnet: fix bridge mode bugs net: rmnet: use upper/lower device infrastructure net: rmnet: do not allow to change mux id if mux id is duplicated net: rmnet: remove rcu_read_lock in rmnet_force_unassociate_device() net: rmnet: fix suspicious RCU usage net: rmnet: fix NULL pointer dereference in rmnet_changelink() net: rmnet: fix NULL pointer dereference in rmnet_newlink() net: phy: marvell: don't interpret PHY status unless resolved mlx5: register lag notifier for init network namespace only unix: define and set show_fdinfo only if procfs is enabled hinic: fix a bug of rss configuration hinic: fix a bug of setting hw_ioctxt hinic: fix a irq affinity bug net/smc: check for valid ib_client_data ...
2020-02-27perf annotate: Fix segfault with source toggleRavi Bangoria
While rendering annotate browser from perf report tui, we keep track of total number of lines(asm + source) in annotation->nr_entries and total number of asm lines in annotation->nr_asm_entries. But we don't reset them before starting. Thus if user annotates same function multiple times, we restart incrementing these fields with old values. This causes a segfault when user tries to toggle source code after annotating same function multiple times. Fix it. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20200204045233.474937-5-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Align struct annotate_argsRavi Bangoria
Align fields of struct annotate_args. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20200204045233.474937-4-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Simplify disasm_line allocation and freeing codeRavi Bangoria
We are allocating disasm_line object in annotation_line__new() instead of disasm_line__new(). Similarly annotation_line__delete() is actually freeing disasm_line object as well. This complexity is because of privsize. But we don't need privsize anymore so get rid of privsize and simplify disasm_line allocation and freeing code. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20200204045233.474937-3-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Remove privsize from symbol__annotate() argsRavi Bangoria
privsize is passed as 0 from all the symbol__annotate() callers. Remove it from argument list. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20200204045233.474937-2-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf probe: Check return value of strlist__add() for -ENOMEMHe Zhe
strlist__add() may fail with -ENOMEM. Check it and give debugging hint in advance. Signed-off-by: He Zhe <zhe.he@windriver.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lore.kernel.org/lkml/1582727404-180095-1-git-send-email-zhe.he@windriver.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf config: Document missing config optionsRavi Bangoria
While documenting annotate.show_nr_samples config option, I found many other config options missing in perf-config documentation. Add them. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-9-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Fix perf config option descriptionRavi Bangoria
perf config annotate options says it works only with TUI, which is wrong. Most of the TUI options are applicable to stdio2 as well. So remove that generic line and add individual line with each option stating which browsers supports that option. Also, annotate.show_nr_samples config is missing in Documentation. Describe it. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-8-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Prefer cmdline option over default configRavi Bangoria
For all the perf-config options that can also be set from command line option, the preference is given to command line version in case of any conflict. But that's opposite in case of perf annotate. i.e. the more preference is given to default option rather than command line option. Fix it. Before: $ ./perf config annotate.show_nr_samples=false $ ./perf annotate shash --show-nr-samples Percent│ │24: mov -0xc(%rbp),%eax 49.19 │ imul $0x1003f,%eax,%ecx │ mov -0x18(%rbp),%rax After: Samples│ │24: mov -0xc(%rbp),%eax 1 │ imul $0x1003f,%eax,%ecx │ mov -0x18(%rbp),%rax Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-7-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Make perf config effectiveRavi Bangoria
perf default config set by user in [annotate] section is totally ignored by annotate code. Fix it. Before: $ ./perf config annotate.hide_src_code=true annotate.show_nr_jumps=true annotate.show_nr_samples=true $ ./perf annotate shash │ unsigned h = 0; │ movl $0x0,-0xc(%rbp) │ while (*s) │ ↓ jmp 44 │ h = 65599 * h + *s++; 11.33 │24: mov -0xc(%rbp),%eax 43.50 │ imul $0x1003f,%eax,%ecx │ mov -0x18(%rbp),%rax After: │ movl $0x0,-0xc(%rbp) │ ↓ jmp 44 1 │1 24: mov -0xc(%rbp),%eax 4 │ imul $0x1003f,%eax,%ecx │ mov -0x18(%rbp),%rax Note that we have removed show_nr_samples and show_total_period from annotation_options because they are not used. Instead of them we use symbol_conf.show_nr_samples and symbol_conf.show_total_period. Committer testing: Using 'perf annotate --stdio2' to use the TUI rendering but emitting the output to stdio: # perf config # # perf config annotate.hide_src_code=true # perf config annotate.hide_src_code=true # # perf config annotate.show_nr_jumps=true # perf config annotate.show_nr_samples=true # perf config annotate.hide_src_code=true annotate.show_nr_jumps=true annotate.show_nr_samples=true # # Before: # perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized Samples: 1 of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period] ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0 Percent 00000000000609f0 <ObjectInstance::weak_pointer_was_finalized()@@Base>: endbr64 cmpq $0x0,0x20(%rdi) ↓ je 10 xor %eax,%eax ← retq xchg %ax,%ax 100.00 10: push %rbp cmpq $0x0,0x18(%rdi) mov %rdi,%rbp ↓ jne 20 1b: xor %eax,%eax pop %rbp ← retq nop 20: lea 0x18(%rdi),%rdi → callq JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject* cmpq $0x0,0x18(%rbp) ↑ jne 1b mov %rbp,%rdi → callq ObjectBase::jsobj_addr() const@plt mov $0x1,%eax pop %rbp ← retq # After: # perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized 2> /dev/null Samples: 1 of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period] ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0 Samples endbr64 cmpq $0x0,0x20(%rdi) ↓ je 10 xor %eax,%eax ← retq xchg %ax,%ax 1 1 10: push %rbp cmpq $0x0,0x18(%rdi) mov %rdi,%rbp ↓ jne 20 1 1b: xor %eax,%eax pop %rbp ← retq nop 1 20: lea 0x18(%rdi),%rdi → callq JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject* cmpq $0x0,0x18(%rbp) ↑ jne 1b mov %rbp,%rdi → callq ObjectBase::jsobj_addr() const@plt mov $0x1,%eax pop %rbp ← retq # # perf config annotate.show_nr_jumps annotate.show_nr_jumps=true # perf config annotate.show_nr_jumps=false # perf config annotate.show_nr_jumps annotate.show_nr_jumps=false # # perf annotate --stdio2 ObjectInstance::weak_pointer_was_finalized 2> /dev/null Samples: 1 of event 'cycles', 4000 Hz, Event count (approx.): 830873, [percent: local period] ObjectInstance::weak_pointer_was_finalized() /usr/lib64/libgjs.so.0.0.0 Samples endbr64 cmpq $0x0,0x20(%rdi) ↓ je 10 xor %eax,%eax ← retq xchg %ax,%ax 1 10: push %rbp cmpq $0x0,0x18(%rdi) mov %rdi,%rbp ↓ jne 20 1b: xor %eax,%eax pop %rbp ← retq nop 20: lea 0x18(%rdi),%rdi → callq JS_UpdateWeakPointerAfterGC(JS::Heap<JSObject* cmpq $0x0,0x18(%rbp) ↑ jne 1b mov %rbp,%rdi → callq ObjectBase::jsobj_addr() const@plt mov $0x1,%eax pop %rbp ← retq # Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-6-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf config: Introduce perf_config_u8()Ravi Bangoria
Introduce perf_config_u8() utility function to convert char * input into u8 destination. We will utilize it in followup patch. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-5-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Fix --show-nr-samples for tui/stdio2Ravi Bangoria
perf annotate --show-nr-samples does not really show number of samples. The reason is we have two separate variables for the same purpose. One is in symbol_conf.show_nr_samples and another is annotation_options.show_nr_samples. We save command line option in symbol_conf.show_nr_samples but uses annotation_option.show_nr_samples while rendering tui/stdio2 browser. Though, we copy symbol_conf.show_nr_samples to annotation__default_options.show_nr_samples but that is not really effective as we don't use annotation__default_options once we copy default options to dynamic variable annotate.opts in cmd_annotate(). Instead of all these complication, keep only one variable and use it all over. symbol_conf.show_nr_samples is used by perf report/top as well. So let's kill annotation_options.show_nr_samples. On a side note, I've kept annotation_options.show_nr_samples definition because it's still used by perf-config code. Follow up patch to fix perf-config for annotate will remove annotation_options.show_nr_samples. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-4-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate: Fix --show-total-period for tui/stdio2Ravi Bangoria
perf annotate --show-total-period does not really show total period. The reason is we have two separate variables for the same purpose. One is in symbol_conf.show_total_period and another is annotation_options.show_total_period. We save command line option in symbol_conf.show_total_period but uses annotation_option.show_total_period while rendering tui/stdio2 browser. Though, we copy symbol_conf.show_total_period to annotation__default_options.show_total_period but that is not really effective as we don't use annotation__default_options once we copy default options to dynamic variable annotate.opts in cmd_annotate(). Instead of all these complication, keep only one variable and use it all over. symbol_conf.show_total_period is used by perf report/top as well. So let's kill annotation_options.show_total_period. On a side note, I've kept annotation_options.show_total_period definition because it's still used by perf-config code. Follow up patch to fix perf-config for annotate will remove annotation_options.show_total_period. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-3-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27perf annotate/tui: Re-render title bar after switching back from script browserRavi Bangoria
The 'perf annotate' TUI browser provides a 'r' hot key to switch to a script browser. But the annotate browser title bar becomes hidden while switching back from script browser. Fix it. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Changbin Du <changbin.du@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yisheng Xie <xieyisheng1@huawei.com> Link: http://lore.kernel.org/lkml/20200213064306.160480-2-ravi.bangoria@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27tools headers UAPI: Update tools's copy of kvm.h headersArnaldo Carvalho de Melo
Picking the changes from: 5ef8acbdd687 ("KVM: nVMX: Emulate MTF when performing instruction emulation") Silencing this perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h' diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h No change in tooling ensues, just the x86 kvm tooling gets rebuilt as those headers are included in its build: $ cp arch/x86/include/uapi/asm/kvm.h tools/arch/x86/include/uapi/asm/kvm.h $ make -C tools/perf make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j12' parallel build Auto-detecting system features: ... dwarf: [ on ] <SNIP> ... disassembler-four-args: [ on ] DESCEND plugins CC /tmp/build/perf/arch/x86/util/kvm-stat.o <SNIP> LD /tmp/build/perf/arch/x86/util/perf-in.o LD /tmp/build/perf/arch/x86/perf-in.o LD /tmp/build/perf/arch/perf-in.o LD /tmp/build/perf/perf-in.o LINK /tmp/build/perf/perf <SNIP> $ As it doesn't seem to be used there: $ grep STATE tools/perf/arch/x86/util/kvm-stat.c $ And the 'perf trace' beautifier table generator isn't interested in these things: $ grep regex= tools/perf/trace/beauty/kvm_ioctl.sh regex='^#[[:space:]]*define[[:space:]]+KVM_(\w+)[[:space:]]+_IO[RW]*\([[:space:]]*KVMIO[[:space:]]*,[[:space:]]*(0x[[:xdigit:]]+).*' $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Oliver Upton <oupton@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27tools arch x86: Sync the msr-index.h copy with the kernel sourcesArnaldo Carvalho de Melo
To pick up the changes from these csets: 21b5ee59ef18 ("x86/cpu/amd: Enable the fixed Instructions Retired counter IRPERF") $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h $ git diff diff --git a/tools/arch/x86/include/asm/msr-index.h b/tools/arch/x86/include/asm/msr-index.h index ebe1685e92dd..d5e517d1c3dd 100644 --- a/tools/arch/x86/include/asm/msr-index.h +++ b/tools/arch/x86/include/asm/msr-index.h @@ -512,6 +512,8 @@ #define MSR_K7_HWCR 0xc0010015 #define MSR_K7_HWCR_SMMLOCK_BIT 0 #define MSR_K7_HWCR_SMMLOCK BIT_ULL(MSR_K7_HWCR_SMMLOCK_BIT) +#define MSR_K7_HWCR_IRPERF_EN_BIT 30 +#define MSR_K7_HWCR_IRPERF_EN BIT_ULL(MSR_K7_HWCR_IRPERF_EN_BIT) #define MSR_K7_FID_VID_CTL 0xc0010041 #define MSR_K7_FID_VID_STATUS 0xc0010042 $ That don't result in any change in tooling: $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after $ diff -u before after $ To silence this perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h' diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-26Merge tag 'trace-v5.6-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing and bootconfig updates: "Fixes and changes to bootconfig before it goes live in a release. Change in API of bootconfig (before it comes live in a release): - Have a magic value "BOOTCONFIG" in initrd to know a bootconfig exists - Set CONFIG_BOOT_CONFIG to 'n' by default - Show error if "bootconfig" on cmdline but not compiled in - Prevent redefining the same value - Have a way to append values - Added a SELECT BLK_DEV_INITRD to fix a build failure Synthetic event fixes: - Switch to raw_smp_processor_id() for recording CPU value in preempt section. (No care for what the value actually is) - Fix samples always recording u64 values - Fix endianess - Check number of values matches number of fields - Fix a printing bug Fix of trace_printk() breaking postponed start up tests Make a function static that is only used in a single file" * tag 'trace-v5.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: bootconfig: Fix CONFIG_BOOTTIME_TRACING dependency issue bootconfig: Add append value operator support bootconfig: Prohibit re-defining value on same key bootconfig: Print array as multiple commands for legacy command line bootconfig: Reject subkey and value on same parent key tools/bootconfig: Remove unneeded error message silencer bootconfig: Add bootconfig magic word for indicating bootconfig explicitly bootconfig: Set CONFIG_BOOT_CONFIG=n by default tracing: Clear trace_state when starting trace bootconfig: Mark boot_config_checksum() static tracing: Disable trace_printk() on post poned tests tracing: Have synthetic event test use raw_smp_processor_id() tracing: Fix number printing bug in print_synth_event() tracing: Check that number of vals matches number of synth event fields tracing: Make synth_event trace functions endian-correct tracing: Make sure synth_event_trace() example always uses u64
2020-02-26Merge tag 'linux-kselftest-kunit-5.6-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kunit fixes from Shuah Khan: "This Kselftest kunit update consists of fixes to documentation and the run-time tool from Brendan Higgins and Heidi Fahim" * tag 'linux-kselftest-kunit-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: run kunit_tool from any directory kunit: test: Improve error messages for kunit_tool when kunitconfig is invalid Documentation: kunit: fixed sphinx error in code block
2020-02-26Merge tag 'linux-kselftest-5.6-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fixes from Shuah Khan: - fixes to TIMEOUT failures and out-of-tree compilation compilation errors from Michael Ellerman. - declutter git status fix from Christophe Leroy * tag 'linux-kselftest-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/rseq: Fix out-of-tree compilation selftests: Install settings files to fix TIMEOUT failures selftest/lkdtm: Don't pollute 'git status'
2020-02-26Merge tag 'perf-urgent-for-mingo-5.6-20200220' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: auxtrace: Adrian Hunter: - Fix endless record after being terminated on arm-spe. Wei Li: - Fix endless record after being terminated on Intel PT and BTS and on ARM's cs-etm. perf test: Thomas Richter - Fix test trace+probe_vfs_getname.sh on s390 PowerPC: Arnaldo Carvalho de Melo: - Sync powerpc syscall.tbl with the kernel sources. BPF: Arnaldo Carvalho de Melo: - Remove extraneous bpf/ subdir from bpf.h headers used to build bpf events. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-02-26selftests: nft_concat_range: Add test for reported add/flush/add issueStefano Brivio
Add a specific test for the crash reported by Phil Sutter and addressed in the previous patch. The test cases that, in my intention, should have covered these cases, that is, the ones from the 'concurrency' section, don't run these sequences tightly enough and spectacularly failed to catch this. While at it, define a convenient way to add these kind of tests, by adding a "reported issues" test section. It's more convenient, for this particular test, to execute the set setup in its own function. However, future test cases like this one might need to call setup functions, and will typically need no tools other than nft, so allow for this in check_tools(). The original form of the reproducer used here was provided by Phil. Reported-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-02-25selftests: nft_concat_range: Move option for 'list ruleset' before commandStefano Brivio
Before nftables commit fb9cea50e8b3 ("main: enforce options before commands"), 'nft list ruleset -a' happened to work, but it's wrong and won't work anymore. Replace it by 'nft -a list ruleset'. Reported-by: Chen Yi <yiche@redhat.com> Fixes: 611973c1e06f ("selftests: netfilter: Introduce tests for sets with range concatenation") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-02-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds
Pull networking fixes from David Miller: 1) Limit xt_hashlimit hash table size to avoid OOM or hung tasks, from Cong Wang. 2) Fix deadlock in xsk by publishing global consumer pointers when NAPI is finished, from Magnus Karlsson. 3) Set table field properly to RT_TABLE_COMPAT when necessary, from Jethro Beekman. 4) NLA_STRING attributes are not necessary NULL terminated, deal wiht that in IFLA_ALT_IFNAME. From Eric Dumazet. 5) Fix checksum handling in atlantic driver, from Dmitry Bezrukov. 6) Handle mtu==0 devices properly in wireguard, from Jason A. Donenfeld. 7) Fix several lockdep warnings in bonding, from Taehee Yoo. 8) Fix cls_flower port blocking, from Jason Baron. 9) Sanitize internal map names in libbpf, from Toke Høiland-Jørgensen. 10) Fix RDMA race in qede driver, from Michal Kalderon. 11) Fix several false lockdep warnings by adding conditions to list_for_each_entry_rcu(), from Madhuparna Bhowmik. 12) Fix sleep in atomic in mlx5 driver, from Huy Nguyen. 13) Fix potential deadlock in bpf_map_do_batch(), from Yonghong Song. 14) Hey, variables declared in switch statement before any case statements are not initialized. I learn something every day. Get rids of this stuff in several parts of the networking, from Kees Cook. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (99 commits) bnxt_en: Issue PCIe FLR in kdump kernel to cleanup pending DMAs. bnxt_en: Improve device shutdown method. net: netlink: cap max groups which will be considered in netlink_bind() net: thunderx: workaround BGX TX Underflow issue ionic: fix fw_status read net: disable BRIDGE_NETFILTER by default net: macb: Properly handle phylink on at91rm9200 s390/qeth: fix off-by-one in RX copybreak check s390/qeth: don't warn for napi with 0 budget s390/qeth: vnicc Fix EOPNOTSUPP precedence openvswitch: Distribute switch variables for initialization net: ip6_gre: Distribute switch variables for initialization net: core: Distribute switch variables for initialization udp: rehash on disconnect net/tls: Fix to avoid gettig invalid tls record bpf: Fix a potential deadlock with bpf_map_do_batch bpf: Do not grab the bucket spinlock by default on htab batch ops ice: Wait for VF to be reset/ready before configuration ice: Don't tell the OS that link is going down ice: Don't reject odd values of usecs set by user ...
2020-02-21selftests/vm: add missed tests in run_vmtestsSeongJae Park
The commits introducing 'mlock-random-test'[1], 'map_fiex_noreplace'[2], and 'thuge-gen'[3] have not added those in the 'run_vmtests' script and thus the 'run_tests' command of kselftests doesn't run those. This commit adds those in the script. 'gup_benchmark' and 'transhuge-stress' are also not included in the 'run_vmtests', but this commit does not add those because those are for performance measurement rather than pass/fail tests. [1] commit 26b4224d9961 ("selftests: expanding more mlock selftest") [2] commit 91cbacc34512 ("tools/testing/selftests/vm/map_fixed_noreplace.c: add test for MAP_FIXED_NOREPLACE") [3] commit fcc1f2d5dd34 ("selftests: add a test program for variable huge page sizes in mmap/shmget") Link: http://lkml.kernel.org/r/20200206085144.29126-1-sj38.park@gmail.com Signed-off-by: SeongJae Park <sjpark@amazon.de> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-02-21bootconfig: Add append value operator supportMasami Hiramatsu
Add append value operator "+=" support to bootconfig syntax. With this operator, user can add new value to the key as an entry of array instead of overwriting. For example, foo = bar ... foo += baz Then the key "foo" has "bar" and "baz" values as an array. Link: http://lkml.kernel.org/r/158227283195.12842.8310503105963275584.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-02-21bootconfig: Prohibit re-defining value on same keyMasami Hiramatsu
Currently, bootconfig adds a new value on the existing key to the tail of an array. But this looks a bit confusing because an admin can easily rewrite the original value in the same config file. This rejects the following value re-definition. key = value1 ... key = value2 You should rewrite value1 to value2 in this case. Link: http://lkml.kernel.org/r/158227282199.12842.10110929876059658601.stgit@devnote2 Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> [ Fixed spelling of arraies to arrays ] Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-02-20bootconfig: Reject subkey and value on same parent keyMasami Hiramatsu
Reject if a value node is mixed with subkey node on same parent key node. A value node can not co-exist with subkey node under some key node, e.g. key = value key.subkey = another-value This is not be allowed because bootconfig API is not designed to handle such case. Link: http://lkml.kernel.org/r/158220115232.26565.7792340045009731803.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-02-20tools/bootconfig: Remove unneeded error message silencerMasami Hiramatsu
Remove error message silent knob, we don't need it anymore because we can check if there is a bootconfig by checking the magic word. If there is a magic word, but failed to load a bootconfig from initrd, there is a real problem. Link: http://lkml.kernel.org/r/158220113256.26565.14264598654427773104.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-02-20bootconfig: Add bootconfig magic word for indicating bootconfig explicitlyMasami Hiramatsu
Add bootconfig magic word to the end of bootconfig on initrd image for indicating explicitly the bootconfig is there. Also tools/bootconfig treats wrong size or wrong checksum or parse error as an error, because if there is a bootconfig magic word, there must be a bootconfig. The bootconfig magic word is "#BOOTCONFIG\n", 12 bytes word. Thus the block image of the initrd file with bootconfig is as follows. [Initrd][bootconfig][size][csum][#BOOTCONFIG\n] Link: http://lkml.kernel.org/r/158220112263.26565.3944814205960612841.stgit@devnote2 Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-02-20selftests/rseq: Fix out-of-tree compilationMichael Ellerman
Currently if you build with O=... the rseq tests don't build: $ make O=$PWD/output -C tools/testing/selftests/ TARGETS=rseq make: Entering directory '/linux/tools/testing/selftests' ... make[1]: Entering directory '/linux/tools/testing/selftests/rseq' gcc -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ -shared -fPIC rseq.c -lpthread -o /linux/output/rseq/librseq.so gcc -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ basic_test.c -lpthread -lrseq -o /linux/output/rseq/basic_test /usr/bin/ld: cannot find -lrseq collect2: error: ld returned 1 exit status This is because the library search path points to the source directory, not the output. We can fix it by changing the library search path to $(OUTPUT). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-02-20selftests: Install settings files to fix TIMEOUT failuresMichael Ellerman
Commit 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") added a 45 second timeout for tests, and also added a way for tests to customise the timeout via a settings file. For example the ftrace tests take multiple minutes to run, so they were given longer in commit b43e78f65b1d ("tracing/selftests: Turn off timeout setting"). This works when the tests are run from the source tree. However if the tests are installed with "make -C tools/testing/selftests install", the settings files are not copied into the install directory. When the tests are then run from the install directory the longer timeouts are not applied and the tests timeout incorrectly. So add the settings files to TEST_FILES of the appropriate Makefiles to cause the settings files to be installed using the existing install logic. Fixes: 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-02-19Merge tag 'linux-kselftest-5.6-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fixes from Shuah Khan: "Fixes to build failures and other test bugs" * tag 'linux-kselftest-5.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: openat2: fix build error on newer glibc selftests: use LDLIBS for libraries instead of LDFLAGS selftests: fix too long argument selftests: allow detection of build failures Kernel selftests: tpm2: check for tpm support selftests/ftrace: Have pid filter test use instance flag selftests: fix spelling mistaked "chaigned" -> "chained"
2020-02-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf 2020-02-19 The following pull-request contains BPF updates for your *net* tree. We've added 10 non-merge commits during the last 10 day(s) which contain a total of 10 files changed, 93 insertions(+), 31 deletions(-). The main changes are: 1) batched bpf hashtab fixes from Brian and Yonghong. 2) various selftests and libbpf fixes. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-19kunit: run kunit_tool from any directoryHeidi Fahim
Implemented small fix so that the script changes work directories to the root of the linux kernel source tree from which kunit.py is run. This enables the user to run kunit from any working directory. Originally considered using os.path.join but this is more error prone as we would have to find all file path usages and modify them accordingly. Using os.chdir ensures that the entire script is run within /linux. Signed-off-by: Heidi Fahim <heidifahim@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-02-19kunit: test: Improve error messages for kunit_tool when kunitconfig is invalidHeidi Fahim
Previous error message for invalid kunitconfig was vague. Added to it so that it lists invalid fields and prompts for them to be removed. Added validate_config function returning whether or not this kconfig is valid. Signed-off-by: Heidi Fahim <heidifahim@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Tested-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-02-18perf arch powerpc: Sync powerpc syscall.tbl with the kernel sourcesArnaldo Carvalho de Melo
Copy over powerpc syscall.tbl to grab changes from the below commits fddb5d430ad9 ("open: introduce openat2(2) syscall") 9a2cef09c801 ("arch: wire up pidfd_getfd syscall") Now 'perf trace' on powerpc will be able to map from those syscall strings to the right syscall numbers, i.e. perf trace -e pidfd* Will include 'pidfd_getfd' as well as: perf trace open* Will cover all 'open' variants. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Reviewed-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Sargun Dhillon <sargun@sargun.me> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-18libbpf: Sanitise internal map names so they are not rejected by the kernelToke Høiland-Jørgensen
The kernel only accepts map names with alphanumeric characters, underscores and periods in their name. However, the auto-generated internal map names used by libbpf takes their prefix from the user-supplied BPF object name, which has no such restriction. This can lead to "Invalid argument" errors when trying to load a BPF program using global variables. Fix this by sanitising the map names, replacing any non-allowed characters with underscores. Fixes: d859900c4c56 ("bpf, libbpf: support global data/bss/rodata sections") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200217171701.215215-1-toke@redhat.com
2020-02-18bpf, uapi: Remove text about bpf_redirect_map() giving higher performanceToke Høiland-Jørgensen
The performance of bpf_redirect() is now roughly the same as that of bpf_redirect_map(). However, David Ahern pointed out that the header file has not been updated to reflect this, and still says that a significant performance increase is possible when using bpf_redirect_map(). Remove this text from the bpf_redirect_map() description, and reword the description in bpf_redirect() slightly. Also fix the 'Return' section of the bpf_redirect_map() documentation. Fixes: 1d233886dd90 ("xdp: Use bulking for non-map XDP_REDIRECT and consolidate code paths") Reported-by: David Ahern <dsahern@gmail.com> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20200218130334.29889-1-toke@redhat.com
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