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2020-08-14perf ftrace: Add support for trace option tracing_threshChangbin Du
This adds an option '--graph-opts thresh' to setup trace duration threshold for funcgraph tracer. $ sudo ./perf ftrace -G '*' --graph-opts thresh=100 3) ! 184.060 us | } /* schedule */ 3) ! 185.600 us | } /* exit_to_usermode_loop */ 2) ! 225.989 us | } /* schedule_idle */ 2) # 4140.051 us | } /* do_idle */ Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-14-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option 'verbose' to show more info for graph tracerChangbin Du
Sometimes we want ftrace display more and longer information about the trace. $ sudo perf ftrace -G '*' 2) 0.979 us | mutex_unlock(); 2) 1.540 us | __fsnotify_parent(); 2) 0.433 us | fsnotify(); $ sudo perf ftrace -G '*' --graph-opts verbose 14160.770883 | 0) <...>-47814 | .... | 1.289 us | mutex_unlock(); 14160.770886 | 0) <...>-47814 | .... | 1.624 us | __fsnotify_parent(); 14160.770887 | 0) <...>-47814 | .... | 0.636 us | fsnotify(); 14160.770888 | 0) <...>-47814 | .... | 0.328 us | __sb_end_write(); 14160.770888 | 0) <...>-47814 | d... | 0.430 us | fpregs_assert_state_consistent(); 14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() { 14160.770889 | 0) <...>-47814 | .... | | __x64_sys_close() { Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-13-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for tracing option 'irq-info'Changbin Du
This adds support to display irq context info for function tracer. To do this, just specify a '--func-opts irq-info' option. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-12-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for trace option funcgraph-irqsChangbin Du
This adds an option '--graph-opts noirqs' to filter out functions executed in irq context. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-11-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for trace option sleep-timeChangbin Du
This adds an option '--graph-opts nosleep-time' which allow us only to measure on-CPU time. This option is function_graph tracer only. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-10-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for tracing option 'func_stack_trace'Changbin Du
This adds support to display call trace for function tracer. To do this, just specify a '--func-opts call-graph' option. Example: $ sudo perf ftrace -T vfs_read --func-opts call-graph iio-sensor-prox-855 [003] 6168.369657: vfs_read <-ksys_read iio-sensor-prox-855 [003] 6168.369677: <stack trace> => vfs_read => ksys_read => __x64_sys_read => do_syscall_64 => entry_SYSCALL_64_after_hwframe ... Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-9-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf tools: Add general function to parse sublevel optionsChangbin Du
This factors out a general function perf_parse_sublevel_options() to parse sublevel options. The 'sublevel' options is something like the '--debug' options which allow more sublevel options. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-8-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option '--inherit' to trace children processesChangbin Du
This adds an option '--inherit' to allow us trace children processes spawned by our target. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-7-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Show trace column headerChangbin Du
This makes 'perf ftrace' display column header before printing trace. $ sudo perf ftrace # tracer: function # # entries-in-buffer/entries-written: 0/0 #P:8 # # TASK-PID CPU# TIMESTAMP FUNCTION # | | | | | <...>-9246 [006] 10726.262760: mutex_unlock <-rb_simple_write <...>-9246 [006] 10726.262764: __fsnotify_parent <-vfs_write <...>-9246 [006] 10726.262765: fsnotify <-vfs_write <...>-9246 [006] 10726.262766: __sb_end_write <-vfs_write <...>-9246 [006] 10726.262767: fpregs_assert_state_consistent <-do_syscall_64 Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-6-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option '-m/--buffer-size' to set per-cpu buffer sizeChangbin Du
This adds an option '-m/--buffer-size' to allow us set the size of per-cpu tracing buffer. Committer testing: Before running with this option: # find /sys/kernel/tracing/ -name buffer_size_kb | xargs cat 1408 1408 1408 1408 1408 1408 1408 1408 1408 # Then, run: # perf ftrace -m 2048K | head -10 2) | mutex_unlock() { 2) ==========> | 2) | smp_irq_work_interrupt() { 2) | irq_enter() { 2) 0.121 us | rcu_irq_enter(); 2) 0.128 us | irqtime_account_irq(); 2) 0.719 us | } 2) | __wake_up() { 2) | __wake_up_common_lock() { 2) 0.105 us | _raw_spin_lock_irqsave(); # Now look at those tracefs knobs: # find /sys/kernel/tracing/ -name buffer_size_kb | xargs cat 2048 2048 2048 2048 2048 2048 2048 2048 2048 # This should be similar to the -m option in the other perf tools, such as 'perf record', 'perf trace', etc. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-5-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Factor out function write_tracing_file_int()Changbin Du
We will reuse this function later. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-4-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option '-F/--funcs' to list available functionsChangbin Du
This adds an option '-F/--funcs' to list all available functions to trace, which is read from tracing file 'available_filter_functions'. $ sudo ./perf ftrace -F | head trace_initcall_finish_cb initcall_blacklisted do_one_initcall do_one_initcall trace_initcall_start_cb run_init_process try_to_run_init_process match_dev_by_label match_dev_by_uuid rootfs_init_fs_context $ Committer notes: This is the same command line option and for the same purpose as in 'perf probe'. Signed-off-by: Changbin Du <changbin.du@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-3-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Select function/function_graph tracer automaticallyChangbin Du
The '-g/-G' options have already implied function_graph tracer should be used instead of function tracer. So we don't need extra option '--tracer' in this case. This patch changes the behavior as below: - If '-g' or '-G' option is on, then function_graph tracer is used. - If '-T' or '-N' option is on, then function tracer is used. - The function_graph has priority over function tracer. - The option '--tracer' only take effect if neither -g/-G nor -T/-N is specified. Here are some examples. This will start tracing all functions using default tracer: $ sudo perf ftrace This will trace all functions using function graph tracer: $ sudo perf ftrace -G '*' This will trace function vfs_read using function graph tracer: $ sudo perf ftrace -G vfs_read This will trace function vfs_read using function tracer: $ sudo perf ftrace -T vfs_read Committer notes: Using '-h -G' will tell what that option is about, so to further clarify the above examples: # perf ftrace -h -G -G, --graph-funcs <func> Set graph filter on given functions # perf ftrace -h -g -g, --nograph-funcs <func> Set nograph filter on given functions # perf ftrace -h -T -T, --trace-funcs <func> trace given functions only # perf ftrace -h -N -N, --notrace-funcs <func> do not trace given functions # Signed-off-by: Changbin Du <changbin.du@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-2-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14sched/debug: Fix the alignment of the show-state debug outputLibing Zhou
Current sysrq(t) output task fields name are not aligned with actual task fields value, e.g.: kernel: sysrq: Show State kernel: task PC stack pid father kernel: systemd S12456 1 0 0x00000000 kernel: Call Trace: kernel: ? __schedule+0x240/0x740 To make it more readable, print fields name together with task fields value in the same line, with fixed width: kernel: sysrq: Show State kernel: task:systemd state:S stack:12920 pid: 1 ppid: 0 flags:0x00000000 kernel: Call Trace: kernel: __schedule+0x282/0x620 Signed-off-by: Libing Zhou <libing.zhou@nokia-sbell.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20200814030236.37835-1-libing.zhou@nokia-sbell.com
2020-08-14perf/x86/rapl: Add support for Intel SPR platformZhang Rui
Intel SPR platform uses fixed 16 bit energy unit for DRAM RAPL domain, and fixed 0 bit energy unit for Psys RAPL domain. After this, on SPR platform the energy counters appear in perf list. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Len Brown <len.brown@intel.com> Link: https://lore.kernel.org/r/20200811153149.12242-4-rui.zhang@intel.com
2020-08-14perf/x86/rapl: Support multiple RAPL unit quirksZhang Rui
There will be more platforms with different fixed energy units. Enhance the code to support different RAPL unit quirks for different platforms. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Link: https://lore.kernel.org/r/20200811153149.12242-3-rui.zhang@intel.com
2020-08-14perf/x86/rapl: Fix missing psys sysfs attributesZhang Rui
This fixes a problem introduced by commit: 5fb5273a905c ("perf/x86/rapl: Use new MSR detection interface") that perf event sysfs attributes for psys RAPL domain are missing. Fixes: 5fb5273a905c ("perf/x86/rapl: Use new MSR detection interface") Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/r/20200811153149.12242-2-rui.zhang@intel.com
2020-08-14kconfig: qconf: move setOptionMode() to ConfigList from ConfigViewMasahiro Yamada
ConfigView::setOptionMode() only gets access to the 'list' member. Move it to the more relevant ConfigList class. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: do not limit the pop-up menu to the first rowMasahiro Yamada
If you right-click the first row in the option tree, the pop-up menu shows up, but if you right-click the second row or below, the event is ignored due to the following check: if (e->y() <= header()->geometry().bottom()) { Perhaps, the intention was to show the pop-menu only when the tree header was right-clicked, but this handler is not called in that case. Since the origin of e->y() starts from the bottom of the header, this check is odd. Going forward, you can right-click anywhere in the tree to get the pop-up menu. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: refactor icon setupsMasahiro Yamada
These icon data are used by ConfigItem, but stored in each instance of ConfigView. There is no point to keep the same data in each of 3 instances, "menu", "config", and "search". Move the icon data to the more relevant ConfigItem class, and make them static members. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove unused voidPix, menuInvPixMasahiro Yamada
These are initialized, but not used by anyone. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove ConfigItem::text/setTextMasahiro Yamada
Use QTreeWidgetItem::text/setText directly Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove ConfigList::addColumn/removeColumnMasahiro Yamada
Use QTreeView::showColumn/hideColumn directly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove ConfigItem::pixmap/setPixmapMasahiro Yamada
Use QTreeWidgetItem::icon/setIcon directly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: drop more localization codeMasahiro Yamada
This is a remnant of commit 694c49a7c01c ("kconfig: drop localization support"). Get it back to the code prior to commit 3b9fa0931dd8 ("[PATCH] Kconfig i18n support"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove 'parent' from ConfigList::updateMenuList()Masahiro Yamada
All the call-sites of this function pass 'this' to the first argument. So, 'parent' is always the 'this' pointer. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove unused argument from ConfigView::updateList()Masahiro Yamada
Now that ConfigList::updateList() takes no argument, the 'item' argument ConfigView::updateList() is no longer used. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove unused argument from ConfigList::updateList()Masahiro Yamada
This function allocates 'item' before using it, so the argument 'item' is always shadowed. Remove the meaningless argument. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: omit parent to QHBoxLayout()Masahiro Yamada
Instead of passing 0 (i.e. nullptr), leave it empty. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove name from ConfigSearchWindow constructorMasahiro Yamada
This constructor is only called with "search" as the second argument. Hard-code the name in the constructor, and drop it from the function argument. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove unused ConfigList::listView()Masahiro Yamada
I do not know how this function can be useful. In fact, it is unsed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: overload addToolBar() to create and insert toolbarMasahiro Yamada
Use the overloaded function, addToolBar(const QString &title) to create a QToolBar object, setting its window title, and inserts it into the toolbar area. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove toolBar from ConfigMainWindow membersMasahiro Yamada
This pointer is only used in the ConfigMainWindow constructor. Drop it from the private members. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: use 'menu' variable for (QMenu *)Masahiro Yamada
The variable 'config' for the file menu is inconsistent. You do not need to use different variables. Use 'menu' for every menu. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: do not use 'menu' variable for (QMenuBar *)Masahiro Yamada
I think it is a bit confusing to use 'menu' to hold a QMenuBar pointer. I want to use 'menu' for a QMenu pointer. You do not need to use a local variable here. Use menuBar() directly. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: remove ->addSeparator() to menuBarMasahiro Yamada
I do not understand the purpose of this ->addSeparator(). It does not make any difference. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: add 'static' to some file-local dataMasahiro Yamada
Fix some warnings from sparce like follows: warning: symbol '...' was not declared. Should it be static? Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: qconf: Fix mouse events in search viewMaxime Chretien
On menu properties mouse events didn't do anything in search view (listMode). As there are no menus in listMode we can add an exception in tests to always change the value on mouse events if we are in listMode. Signed-off-by: Maxime Chretien <maxime.chretien@bootlin.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: constify XPM dataMasahiro Yamada
Constify arrays as well as strings. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14Revert "checkpatch: kconfig: prefer 'help' over '---help---'"Masahiro Yamada
This reverts commit 84af7a6194e493fae312a2b7fa5a3b51f76d9282. The conversion is done. Cc: Ulf Magnusson <ulfalizer@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-14kconfig: remove '---help---' supportMasahiro Yamada
The conversion is done. No more user of '---help---'. Cc: Ulf Magnusson <ulfalizer@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds
Pull networking fixes from David Miller: "Some merge window fallout, some longer term fixes: 1) Handle headroom properly in lapbether and x25_asy drivers, from Xie He. 2) Fetch MAC address from correct r8152 device node, from Thierry Reding. 3) In the sw kTLS path we should allow MSG_CMSG_COMPAT in sendmsg, from Rouven Czerwinski. 4) Correct fdputs in socket layer, from Miaohe Lin. 5) Revert troublesome sockptr_t optimization, from Christoph Hellwig. 6) Fix TCP TFO key reading on big endian, from Jason Baron. 7) Missing CAP_NET_RAW check in nfc, from Qingyu Li. 8) Fix inet fastreuse optimization with tproxy sockets, from Tim Froidcoeur. 9) Fix 64-bit divide in new SFC driver, from Edward Cree. 10) Add a tracepoint for prandom_u32 so that we can more easily perform usage analysis. From Eric Dumazet. 11) Fix rwlock imbalance in AF_PACKET, from John Ogness" * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (49 commits) net: openvswitch: introduce common code for flushing flows af_packet: TPACKET_V3: fix fill status rwlock imbalance random32: add a tracepoint for prandom_u32() Revert "ipv4: tunnel: fix compilation on ARCH=um" net: accept an empty mask in /sys/class/net/*/queues/rx-*/rps_cpus net: ethernet: stmmac: Disable hardware multicast filter net: stmmac: dwmac1000: provide multicast filter fallback ipv4: tunnel: fix compilation on ARCH=um vsock: fix potential null pointer dereference in vsock_poll() sfc: fix ef100 design-param checking net: initialize fastreuse on inet_inherit_port net: refactor bind_bucket fastreuse into helper net: phy: marvell10g: fix null pointer dereference net: Fix potential memory leak in proto_register() net: qcom/emac: add missed clk_disable_unprepare in error path of emac_clks_phase1_init ionic_lif: Use devm_kcalloc() in ionic_qcq_alloc() net/nfc/rawsock.c: add CAP_NET_RAW check. hinic: fix strncpy output truncated compile warnings drivers/net/wan/x25_asy: Added needed_headroom and a skb->len check net/tls: Fix kmap usage ...
2020-08-13Merge branch 'i2c/for-5.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - bus recovery can now be given a pinctrl handle and the I2C core will do all the steps to switch to/from GPIO which can save quite some boilerplate code from drivers - "fallthrough" conversion - driver updates, mostly ID additions * 'i2c/for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (32 commits) i2c: iproc: fix race between client unreg and isr i2c: eg20t: use generic power management i2c: eg20t: Drop PCI wakeup calls from .suspend/.resume i2c: mediatek: Fix i2c_spec_values description i2c: mediatek: Add i2c compatible for MediaTek MT8192 dt-bindings: i2c: update bindings for MT8192 SoC i2c: mediatek: Add access to more than 8GB dram in i2c driver i2c: mediatek: Add apdma sync in i2c driver i2c: i801: Add support for Intel Tiger Lake PCH-H i2c: i801: Add support for Intel Emmitsburg PCH i2c: bcm2835: Replace HTTP links with HTTPS ones Documentation: i2c: dev: 'block process call' is supported i2c: at91: Move to generic GPIO bus recovery i2c: core: treat EPROBE_DEFER when acquiring SCL/SDA GPIOs i2c: core: add generic I2C GPIO recovery dt-bindings: i2c: add generic properties for GPIO bus recovery i2c: rcar: avoid race when unregistering slave i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c i2c: tegra: Fix runtime resume to re-init VI I2C i2c: tegra: Fix the error path in tegra_i2c_runtime_resume ...
2020-08-13SMB3: Fix mkdir when idsfromsid configured on mountSteve French
mkdir uses a compounded create operation which was not setting the security descriptor on create of a directory. Fix so mkdir now sets the mode and owner info properly when idsfromsid and modefromsid are configured on the mount. Signed-off-by: Steve French <stfrench@microsoft.com> CC: Stable <stable@vger.kernel.org> # v5.8 Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2020-08-13io_uring: internally retry short readsJens Axboe
We've had a few application cases of not handling short reads properly, and it is understandable as short reads aren't really expected if the application isn't doing non-blocking IO. Now that we retain the iov_iter over retries, we can implement internal retry pretty trivially. This ensures that we don't return a short read, even for buffered reads on page cache conflicts. Cleanup the deep nesting and hard to read nature of io_read() as well, it's much more straight forward now to read and understand. Added a few comments explaining the logic as well. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-13net: openvswitch: introduce common code for flushing flowsTonghao Zhang
To avoid some issues, for example RCU usage warning and double free, we should flush the flows under ovs_lock. This patch refactors table_instance_destroy and introduces table_instance_flow_flush which can be invoked by __dp_destroy or ovs_flow_tbl_flush. Fixes: 50b0e61b32ee ("net: openvswitch: fix possible memleak on destroy flow-table") Reported-by: Johan Knöös <jknoos@google.com> Reported-at: https://mail.openvswitch.org/pipermail/ovs-discuss/2020-August/050489.html Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-13af_packet: TPACKET_V3: fix fill status rwlock imbalanceJohn Ogness
After @blk_fill_in_prog_lock is acquired there is an early out vnet situation that can occur. In that case, the rwlock needs to be released. Also, since @blk_fill_in_prog_lock is only acquired when @tp_version is exactly TPACKET_V3, only release it on that exact condition as well. And finally, add sparse annotation so that it is clearer that prb_fill_curr_block() and prb_clear_blk_fill_status() are acquiring and releasing @blk_fill_in_prog_lock, respectively. sparse is still unable to understand the balance, but the warnings are now on a higher level that make more sense. Fixes: 632ca50f2cbd ("af_packet: TPACKET_V3: replace busy-wait loop") Signed-off-by: John Ogness <john.ogness@linutronix.de> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-13random32: add a tracepoint for prandom_u32()Eric Dumazet
There has been some heat around prandom_u32() lately, and some people were wondering if there was a simple way to determine how often it was used, before considering making it maybe 10 times more expensive. This tracepoint exports the generated pseudo random value. Tested: perf list | grep prandom_u32 random:prandom_u32 [Tracepoint event] perf record -a [-g] [-C1] -e random:prandom_u32 sleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 259.748 MB perf.data (924087 samples) ] perf report --nochildren ... 97.67% ksoftirqd/1 [kernel.vmlinux] [k] prandom_u32 | ---prandom_u32 prandom_u32 | |--48.86%--tcp_v4_syn_recv_sock | tcp_check_req | tcp_v4_rcv | ... --48.81%--tcp_conn_request tcp_v4_conn_request tcp_rcv_state_process ... perf script Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Willy Tarreau <w@1wt.eu> Cc: Sedat Dilek <sedat.dilek@gmail.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-13Merge tag 'docs-5.9-2' of git://git.lwn.net/linuxLinus Torvalds
Pull documentation fixes from Jonathan Corbet: "A handful of obvious fixes that wandered in during the merge window" * tag 'docs-5.9-2' of git://git.lwn.net/linux: Documentation/locking/locktypes: fix the typo doc/zh_CN: resolve undefined label warning in admin-guide index doc/zh_CN: fix title heading markup in admin-guide cpu-load docs: remove the 2.6 "Upgrading I2C Drivers" guide docs: Correct the release date of 5.2 stable mailmap: Update comments for with format and more detalis docs: cdrom: Fix a typo and rst markup Doc: admin-guide: use correct legends in kernel-parameters.txt Documentation/features: refresh RISC-V arch support files documentation: coccinelle: Improve command example for make C={1,2} Core-api: Documentation: Replace deprecated :c:func: Usage Dev-tools: Documentation: Replace deprecated :c:func: Usage Filesystems: Documentation: Replace deprecated :c:func: Usage docs: trace: fix a typo
2020-08-13io_uring: retain iov_iter state over io_read/io_write callsJens Axboe
Instead of maintaining (and setting/remembering) iov_iter size and segment counts, just put the iov_iter in the async part of the IO structure. This is mostly a preparation patch for doing appropriate internal retries for short reads, but it also cleans up the state handling nicely and simplifies it quite a bit. Signed-off-by: Jens Axboe <axboe@kernel.dk>
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