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2019-01-09drm/amd/powerplay: avoid possible buffer overflowEvan Quan1-0/+14
Make sure the clock level enforced is within the allowed ranges. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Likun Gao <Likun.Gao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-09drm/amd/powerplay: create pp_od_clk_voltage device file under OD supportEvan Quan1-8/+14
Since pp_od_clk_voltage device file is for OD related sysfs operations. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-09drm/amd/powerplay: update OD support flag for SKU with no OD capabilitiesEvan Quan1-0/+3
For those ASICs with no overdrive capabilities, the OD support flag will be reset. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-01-08fork: record start_time lateDavid Herrmann1-2/+11
This changes the fork(2) syscall to record the process start_time after initializing the basic task structure but still before making the new process visible to user-space. Technically, we could record the start_time anytime during fork(2). But this might lead to scenarios where a start_time is recorded long before a process becomes visible to user-space. For instance, with userfaultfd(2) and TLS, user-space can delay the execution of fork(2) for an indefinite amount of time (and will, if this causes network access, or similar). By recording the start_time late, it much closer reflects the point in time where the process becomes live and can be observed by other processes. Lastly, this makes it much harder for user-space to predict and control the start_time they get assigned. Previously, user-space could fork a process and stall it in copy_thread_tls() before its pid is allocated, but after its start_time is recorded. This can be misused to later-on cycle through PIDs and resume the stalled fork(2) yielding a process that has the same pid and start_time as a process that existed before. This can be used to circumvent security systems that identify processes by their pid+start_time combination. Even though user-space was always aware that start_time recording is flaky (but several projects are known to still rely on start_time-based identification), changing the start_time to be recorded late will help mitigate existing attacks and make it much harder for user-space to control the start_time a process gets assigned. Reported-by: Jann Horn <jannh@google.com> Signed-off-by: Tom Gundersen <teg@jklm.no> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-08tools include uapi: Sync linux/vhost.h with the kernel sourcesArnaldo Carvalho de Melo1-111/+2
To get the changes in: 4b86713236e4 ("vhost: split structs into a separate header file") Silencing this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/vhost.h' differs from latest version at 'include/uapi/linux/vhost.h' diff -u tools/include/uapi/linux/vhost.h include/uapi/linux/vhost.h Those didn't touch things used in tools, i.e. the following continues working: $ tools/perf/trace/beauty/vhost_virtio_ioctl.sh static const char *vhost_virtio_ioctl_cmds[] = { [0x00] = "SET_FEATURES", [0x01] = "SET_OWNER", [0x02] = "RESET_OWNER", [0x03] = "SET_MEM_TABLE", [0x04] = "SET_LOG_BASE", [0x07] = "SET_LOG_FD", [0x10] = "SET_VRING_NUM", [0x11] = "SET_VRING_ADDR", [0x12] = "SET_VRING_BASE", [0x13] = "SET_VRING_ENDIAN", [0x14] = "GET_VRING_ENDIAN", [0x20] = "SET_VRING_KICK", [0x21] = "SET_VRING_CALL", [0x22] = "SET_VRING_ERR", [0x23] = "SET_VRING_BUSYLOOP_TIMEOUT", [0x24] = "GET_VRING_BUSYLOOP_TIMEOUT", [0x25] = "SET_BACKEND_FEATURES", [0x30] = "NET_SET_BACKEND", [0x40] = "SCSI_SET_ENDPOINT", [0x41] = "SCSI_CLEAR_ENDPOINT", [0x42] = "SCSI_GET_ABI_VERSION", [0x43] = "SCSI_SET_EVENTS_MISSED", [0x44] = "SCSI_GET_EVENTS_MISSED", [0x60] = "VSOCK_SET_GUEST_CID", [0x61] = "VSOCK_SET_RUNNING", }; static const char *vhost_virtio_ioctl_read_cmds[] = { [0x00] = "GET_FEATURES", [0x12] = "GET_VRING_BASE", [0x26] = "GET_BACKEND_FEATURES", }; $ At some point in the eBPFication of perf, using something like: # perf trace -e ioctl(cmd=VHOST_VRING*) Will setup a BPF filter right at the raw_syscalls:sys_enter tracepoint, i.e. filtering at the origin. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-g28usrt7l59lwq3wuh8vzbig@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools include uapi: Sync linux/fs.h copy with the kernel sourcesArnaldo Carvalho de Melo1-52/+8
To get the changes in: e262e32d6bde ("vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled") That made the mount flags string table generator to switch to using mount.h instead. This silences the following perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Howells <dhowells@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-mosz81pa6iwxko4p2owbm3ss@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08perf beauty: Switch from using uapi/linux/fs.h to uapi/linux/mount.hArnaldo Carvalho de Melo1-2/+2
As now we'll update our fs.h copy and what tools/perf/trace/beauty/mount_flags.sh needs just got moved to mount.h, use that instead. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Howells <dhowells@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-ls19h376xukeouxrw9dswkcn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools include uapi: Grab a copy of linux/mount.hArnaldo Carvalho de Melo2-0/+59
We were using a copy of uapi/linux/fs.h to create the mount syscall 'flags' string table to use in 'perf trace', to convert from the number obtained via the raw_syscalls:sys_enter into a string, using tools/perf/trace/beauty/mount_flags.sh, but in e262e32d6bde ("vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled") those defines got moved to linux/mount.h, so grab a copy of mount.h too. Keep the uapi/linux/fs.h as we'll use it for the SEEK_ constants. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Howells <dhowells@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-i2ricmpwpdrpukfq3298jr1z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08vfio/type1: Fix unmap overflow off-by-oneAlex Williamson1-1/+1
The below referenced commit adds a test for integer overflow, but in doing so prevents the unmap ioctl from ever including the last page of the address space. Subtract one to compare to the last address of the unmap to avoid the overflow and wrap-around. Fixes: 71a7d3d78e3c ("vfio/type1: silence integer overflow warning") Link: https://bugzilla.redhat.com/show_bug.cgi?id=1662291 Cc: stable@vger.kernel.org # v4.15+ Reported-by: Pei Zhang <pezhang@redhat.com> Debugged-by: Peter Xu <peterx@redhat.com> Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Peter Xu <peterx@redhat.com> Tested-by: Peter Xu <peterx@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2019-01-08perf top: Lift restriction on using callchains without "sym" in --sortArnaldo Carvalho de Melo1-6/+1
This restriction is not present in 'perf report' and since 'perf top' uses the same hists browser, remove it from it as well. With this we create per event buckets with callchain trees, so that # perf top --sort dso -g --no-children Bucketizes samples by DSO and below it shows the callchains leading to functions in this DSO. Try also: # perf top -e sched:*switch -g --no-children To see the callchains leading to sched switches, pressing 'E' to expand all one can quickly see the most common scheduler switches and what leads to them, for instance, calls to IO, futexes, etc. Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: https://lkml.kernel.org/r/20190107140854.GA28965@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools lib traceevent: Remove tep_data_event_from_type() APITzvetomir Stoyanov2-13/+0
In order to make libtraceevent into a proper library, its API should be straightforward. After discussion with Steven Rostedt, we decided to remove the tep_data_event_from_type() API and to replace it with tep_find_event(), as it does the same. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181201040852.913841066@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools lib traceevent: Rename tep_is_file_bigendian() to tep_file_bigendian()Tzvetomir Stoyanov3-4/+4
In order to make libtraceevent into a proper library, its API should be straightforward. After a discussion with Steven Rostedt, we decided to rename a few APIs, to have more intuitive names. This patch renames tep_is_file_bigendian() to tep_file_bigendian(). Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181201040852.767549746@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools lib traceevent: Changed return logic of tep_register_event_handler() APITzvetomir Stoyanov2-2/+13
In order to make libtraceevent into a proper library, its API should be straightforward. The tep_register_event_handler() functions returns -1 in case it successfully registers the new event handler. Such return code is used by the other library APIs in case of an error. To unify the return logic of tep_register_event_handler() with the other APIs, this patch introduces enum tep_reg_handler, which is used by this function as return value, to handle all possible successful return cases. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181201040852.628034497@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools lib traceevent: Changed return logic of trace_seq_printf() and ↵Tzvetomir Stoyanov1-5/+12
trace_seq_vprintf() APIs In order to make libtraceevent into a proper library, its API should be straightforward. The trace_seq_printf() and trace_seq_vprintf() APIs have inconsistent returned values with the other trace_seq_* APIs. This path changes the return logic of trace_seq_printf() and trace_seq_vprintf() to return the number of printed characters, as the other trace_seq_* related APIs. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181201040852.485792891@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools lib traceevent: Rename struct cmdline to struct tep_cmdlineTzvetomir Stoyanov3-24/+24
In order to make libtraceevent a proper library, variables, data structures and functions should have a unique prefix to prevent name space conflicts. That prefix will be "tep_". This patch renames 'struct cmdline' to 'struct tep_cmdline'. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181201040852.358871851@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools lib traceevent: Initialize host_bigendian at tep_handle allocationTzvetomir Stoyanov1-1/+3
This patch initializes the host_bigendian member of the tep_handle structure with the byte order of the current host, when this handler is created - in tep_alloc() API. We need this in order to remove the tep_set_host_bigendian() API. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181201040852.216292134@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08tools lib traceevent: Introduce new libtracevent API: tep_override_comm()Tzvetomir Stoyanov2-15/+55
This patch adds a new API of tracevent library: tep_override_comm() It registers a pid / command mapping. If a mapping with the same pid already exists, the entry is updated with the new command. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154648.038915912@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08perf tests: Add a test for the ARM 32-bit [vectors] pageFlorian Fainelli4-0/+34
perf on ARM requires CONFIG_KUSER_HELPERS to be turned on to allow some independance with respect to the ARM CPU being used. Add a test which tries to locate the [vectors] page, created when CONFIG_KUSER_HELPERS is turned on to help asses the system's health. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Healy <cphealy@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: http://lkml.kernel.org/r/20181221034337.26663-3-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08perf tools: Make find_vdso_map() more modularFlorian Fainelli4-12/+11
In preparation for checking that the vectors page on the ARM architecture, refactor the find_vdso_map() function to accept finding an arbitrary string and create a dedicated helper function for that under util/find-map.c and update the filename to find-map.c and all references to it: perf-read-vdso.c and util/vdso.c. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Healy <cphealy@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: http://lkml.kernel.org/r/20181221034337.26663-2-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08perf trace: Fix alignment for [continued] linesArnaldo Carvalho de Melo1-2/+3
We were not taking into account the "... [continued]" printed characters, fix it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-qt20y0acmf8k0bzisce8kw95@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08perf trace: Fix ')' placement in "interrupted" syscall linesArnaldo Carvalho de Melo1-2/+8
When we get the sys_enter for a syscall we check if the last one is still waiting for its matching sys_exit, if so we print this: 468.753 ( ): firefox/32382 poll(ufds: 0x7f3988d3dd00, nfds: 7, timeout_msecs: 4294967295) ... 449.575 ( 0.004 ms): Softwar~cThrea/32434 futex(uaddr: 0x7f39a18a9b70, op: WAKE|PRIVATE_FLAG, val: 1) = 0 At some point we'll get that poll sys_exit event and will print a "[continued]" line. While making the sizing of the alignment after the syscall arg list and its result configurable, so that we can mimic strace, which uses a smaller alingment by default, a bug was introduced where the closing parens appeared before the syscall name and its arg list, fix it. Fixes: 4b8a240ed5e0 ("perf trace: Add alignment spaces after the closing parens") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-oi45i54s59h1w1kmgpzrfuum@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-08irqchip/csky: fixup handle_irq_perbit break irqGuo Ren1-35/+42
The handle_irq_perbit function loop every bit in hwirq local variable. handle_irq_perbit(hwirq) { for_everyt_bit_in(hwirq) { handle_domain_irq() ->irq_exit() ->invoke_softirq() ->__do_softirq() ->local_irq_enable() // Here will cause new interrupt. } } When new interrupt coming at local_irq_enable, it will finish another interrupt handler and pull down the interrupt source. But hwirq is the local variable for handle_irq_perbit(), it can't get new interrupt controller pending reg status. So we need update hwirq with pending reg in every loop. Also change write_relax to writel could prevent stw from fast retire. When local_irq is enabled, intc regs is really set-in. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Lu Baoquan <lu.baoquan@intellif.com>
2019-01-08csky: fixup compile error with pte_allocGuo Ren1-25/+18
Commit: 4cf58924951e remove the address argument of pte_alloc without modify csky related code. linux-5.0-rc1 compile failed with csky. Remove the unnecessary address testing in pte_alloc(). Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-08vfio/pci: set TRACE_INCLUDE_PATH to fix the build errorMasahiro Yamada1-1/+1
drivers/vfio/pci/vfio_pci_nvlink2.c cannot be compiled for in-tree building. CC drivers/vfio/pci/vfio_pci_nvlink2.o In file included from drivers/vfio/pci/trace.h:102, from drivers/vfio/pci/vfio_pci_nvlink2.c:29: ./include/trace/define_trace.h:89:42: fatal error: ./trace.h: No such file or directory #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) ^ compilation terminated. make[1]: *** [scripts/Makefile.build;277: drivers/vfio/pci/vfio_pci_nvlink2.o] Error 1 To fix the build error, let's tell include/trace/define_trace.h the location of drivers/vfio/pci/trace.h Fixes: 7f92891778df ("vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver") Reported-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2019-01-08csky: fixup CACHEV1 store instruction fast retireGuo Ren1-0/+25
For I/O access, 810/807 store instruction fast retire will cause wrong primitive. For example: stw (clear interrupt source) stw (unmask interrupt controller) enable interrupt stw is fast retire instruction. When PC is run at enable interrupt stage, the clear interrupt source hasn't finished. It will cause another wrong irq-enter. So use mb() to prevent above. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Lu Baoquan <lu.baoquan@intellif.com>
2019-01-08Merge tag 'perf-core-for-mingo-4.21-20190104' of ↵Ingo Molnar17-28/+89
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: perf annotate: Ivan Krylov: - Pass filename to objdump via execl, fixing usage with filenames with special characters. perf report: Jin Yao: Fix wrong iteration count in --branch-history perf stat: Jin Yao: - Fix endless wait for child process perf test: Arnaldo Carvalho de Melo: - Use a fallback to get the pathname in vfs_getname in tools build: Jiri Olsa: - Allow overriding CFLAGS assignments. Misc: Arnaldo Carvalho de Melo: - Syncronize UAPI headers Mattias Jacobsson: - Remove redundant va_end() in strbuf_addv() Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-01-08PCI: amlogic: Fix build failure due to missing gpio headerCorentin Labbe1-0/+1
Building the driver when GPIOLIB=n is not selected is causing the following compilation failure: drivers/pci/controller/dwc/pci-meson.c: In function 'meson_pcie_assert_reset': drivers/pci/controller/dwc/pci-meson.c:290:2: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration] gpiod_set_value_cansleep(mp->reset_gpio, 0); ^~~~~~~~~~~~~~~~~~~~~~~~ gpio_set_value_cansleep drivers/pci/controller/dwc/pci-meson.c: In function 'meson_pcie_probe': drivers/pci/controller/dwc/pci-meson.c:540:19: error: implicit declaration of function 'devm_gpiod_get'; did you mean 'devm_gpio_free'? [-Werror=implicit-function-declaration] mp->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); ^~~~~~~~~~~~~~ devm_gpio_free drivers/pci/controller/dwc/pci-meson.c:540:48: error: 'GPIOD_OUT_LOW' undeclared (first use in this function); did you mean 'GPIOF_INIT_LOW'? mp->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); ^~~~~~~~~~~~~ GPIOF_INIT_LOW Add the missing linux/gpio/consumer.h header to fix it. Fixes: 9c0ef6d34fdb ("PCI: amlogic: Add the Amlogic Meson PCIe controller driver") Signed-off-by: Corentin Labbe <clabbe@baylibre.com> [lorenzo.pieralisi@arm.com: commit log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-01-08dma-mapping: remove dma_zalloc_coherent()Luis Chamberlain3-23/+5
dma_zalloc_coherent() is no longer needed as it has no users because dma_alloc_coherent() already zeroes out memory for us. The Coccinelle grammar rule that used to check for dma_alloc_coherent() + memset() is modified so that it just tells the user that the memset is not needed anymore. Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-01-08cross-tree: phase out dma_zalloc_coherent() on headersLuis Chamberlain3-3/+3
The last few stragglers coccinelle doesn't pick up are on driver specific header files. Phase those out as well as dma_alloc_coherent() zeroes out the memory as well now too. Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-01-08cross-tree: phase out dma_zalloc_coherent()Luis Chamberlain173-949/+915
We already need to zero out memory for dma_alloc_coherent(), as such using dma_zalloc_coherent() is superflous. Phase it out. This change was generated with the following Coccinelle SmPL patch: @ replace_dma_zalloc_coherent @ expression dev, size, data, handle, flags; @@ -dma_zalloc_coherent(dev, size, handle, flags) +dma_alloc_coherent(dev, size, handle, flags) Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> [hch: re-ran the script on the latest tree] Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-01-08csky: fixup relocation error with 807 & 860Guo Ren1-16/+22
810 doesn't support jsri instruction and csky-as will leave jsri + nop for relocation. Module-probe need replace them with lrw + jsr. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Hui Kai <huikai@acoinfo.com>
2019-01-08mtd: rawnand: qcom: fix memory corruption that causes panicChristian Lamparter1-10/+10
This patch fixes a memory corruption that occurred in the qcom-nandc driver since it was converted to nand_scan(). On boot, an affected device will panic from a NPE at a weird place: | Unable to handle kernel NULL pointer dereference at virtual address 0 | pgd = (ptrval) | [00000000] *pgd=00000000 | Internal error: Oops: 80000005 [#1] SMP ARM | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.9 #0 | Hardware name: Generic DT based system | PC is at (null) | LR is at nand_block_isbad+0x90/0xa4 | pc : [<00000000>] lr : [<c0592240>] psr: 80000013 | sp : cf839d40 ip : 00000000 fp : cfae9e20 | r10: cf815810 r9 : 00000000 r8 : 00000000 | r7 : 00000000 r6 : 00000000 r5 : 00000001 r4 : cf815810 | r3 : 00000000 r2 : cfae9810 r1 : ffffffff r0 : cf815810 | Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none | Control: 10c5387d Table: 8020406a DAC: 00000051 | Process swapper/0 (pid: 1, stack limit = 0x(ptrval)) | [<c0592240>] (nand_block_isbad) from [<c0580a94>] | [<c0580a94>] (allocate_partition) from [<c05811e4>] | [<c05811e4>] (add_mtd_partitions) from [<c0581164>] | [<c0581164>] (parse_mtd_partitions) from [<c057def4>] | [<c057def4>] (mtd_device_parse_register) from [<c059d274>] | [<c059d274>] (qcom_nandc_probe) from [<c0567f00>] The problem is that the nand_scan()'s qcom_nand_attach_chip callback is updating the nandc->max_cwperpage from 1 to 4. This causes the sg_init_table of clear_bam_transaction() in the driver's qcom_nandc_block_bad() to memset much more than what was initially allocated by alloc_bam_transaction(). This patch restores the old behavior by reallocating the shared bam transaction alloc_bam_transaction() after the chip was identified, but before mtd_device_parse_register() (which is an alias for mtd_device_register() - see panic) gets called. This fixes the corruption and the driver is working again. Cc: stable@vger.kernel.org Fixes: 6a3cec64f18c ("mtd: rawnand: qcom: convert driver to nand_scan()") Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
2019-01-08cpufreq: check if policy is inactive early in __cpufreq_get()Sudeep Holla1-8/+4
cpuinfo_cur_freq gets current CPU frequency as detected by hardware while scaling_cur_freq last known CPU frequency. Some platforms may not allow checking the CPU frequency of an offline CPU or the associated resources may have been released via cpufreq_exit when the CPU gets offlined, in which case the policy would have been invalidated already. If we attempt to get current frequency from the hardware, it may result in hang or crash. For example on Juno, I see: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000188 [0000000000000188] pgd=0000000000000000 Internal error: Oops: 96000004 [#1] PREEMPT SMP Modules linked in: CPU: 5 PID: 4202 Comm: cat Not tainted 4.20.0-08251-ga0f2c0318a15-dirty #87 Hardware name: ARM LTD ARM Juno Development Platform/ARM Juno Development Platform pstate: 40000005 (nZcv daif -PAN -UAO) pc : scmi_cpufreq_get_rate+0x34/0xb0 lr : scmi_cpufreq_get_rate+0x34/0xb0 Call trace: scmi_cpufreq_get_rate+0x34/0xb0 __cpufreq_get+0x34/0xc0 show_cpuinfo_cur_freq+0x24/0x78 show+0x40/0x60 sysfs_kf_seq_show+0xc0/0x148 kernfs_seq_show+0x44/0x50 seq_read+0xd4/0x480 kernfs_fop_read+0x15c/0x208 __vfs_read+0x60/0x188 vfs_read+0x94/0x150 ksys_read+0x6c/0xd8 __arm64_sys_read+0x24/0x30 el0_svc_common+0x78/0x100 el0_svc_handler+0x38/0x78 el0_svc+0x8/0xc ---[ end trace 3d1024e58f77f6b2 ]--- So fix the issue by checking if the policy is invalid early in __cpufreq_get before attempting to get the current frequency. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-01-08ALSA: cs46xx: Potential NULL dereference in probeDan Carpenter1-0/+3
The "chip->dsp_spos_instance" can be NULL on some of the ealier error paths in snd_cs46xx_create(). Reported-by: "Yavuz, Tuba" <tuba@ece.ufl.edu> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-01-08samples/seccomp: Fix 32-bit buildTycho Andersen1-0/+1
Both the .o and the actual executable need to be built with -m32 in order to link correctly. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Tycho Andersen <tycho@tycho.ws> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Borislav Petkov <bp@alien8.de> Cc: James Morris <jmorris@namei.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: fec7b6690541 ("samples: add an example of seccomp user trap") Link: http://lkml.kernel.org/r/20190107231631.1849-1-tycho@tycho.ws Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-01-08ceph: use vmf_error() in ceph_filemap_fault()Souptick Joarder1-4/+1
This code is converted to use vmf_error(). Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2019-01-08libceph: allow setting abort_on_full for rbdDongsheng Yang6-9/+19
Introduce a new option abort_on_full, default to false. Then we can get -ENOSPC when the pool is full, or reaches quota. [ Don't show abort_on_full in /proc/mounts. ] Signed-off-by: Dongsheng Yang <dongsheng.yang@easystack.cn> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2019-01-07ACPI/IORT: Fix build when CONFIG_IOMMU_API=nQian Cai1-1/+1
Commit 8097e53eaba2 ("ACPI/IORT: Use helper functions to access dev->iommu_fwspec") changed by mistake the iort_fwspec_iommu_ops() stub definition (compiled in when CONFIG_IOMMU_API=n), that caused the following compilation failure: drivers/acpi/arm64/iort.c:880:1: error: expected identifier or '(' before '{' token { return NULL; } ^ drivers/acpi/arm64/iort.c:879:39: warning: 'iort_fwspec_iommu_ops' used but never defined static inline const struct iommu_ops *iort_fwspec_iommu_ops(struct device *dev); ^~~~~~~~~~~~~~~~~~~~~ Fix it. Fixes: 8097e53eaba2 ("ACPI/IORT: Use helper functions to access dev->iommu_fwspec") Signed-off-by: Qian Cai <cai@lca.pw> [lorenzo.pieralisi@arm.com: updated tags and log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Hanjun Guo <hanjun.guo@linaro.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Joerg Roedel <jroedel@suse.de> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-01-07Fix a handful of audit-related issuePalmer Dabbelt8-3/+37
This is sort of a mix between a new feature and a bug fix. I've managed to screw up merging this patch set a handful of times but I think it's OK this time around. The main new feature here is audit support for RISC-V, with some fixes to audit-related bugs that cropped up along the way: * The addition of NR_syscalls into unistd.h, which is necessary for CONFIG_FTRACE_SYSCALLS. * The definition of CREATE_TRACE_POINTS so __tracepoint_sys_{enter,exit} get defined. * A fix for trace_sys_exit() so we can enable CONFIG_HAVE_SYSCALL_TRACEPOINTS.
2019-01-07riscv: add HAVE_SYSCALL_TRACEPOINTS to KconfigDavid Abdurachmanov1-0/+1
I looked into Documentation/trace/ftrace-design.rst and, I think, we check all the boxes needed for HAVE_SYSCALL_TRACEPOINTS. Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07riscv: fix trace_sys_exit hookDavid Abdurachmanov1-1/+1
Fix compilation error. Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07riscv: define CREATE_TRACE_POINTS in ptrace.cDavid Abdurachmanov1-0/+2
Define CREATE_TRACE_POINTS in order to create functions and structures for the trace events. This is needed if HAVE_SYSCALL_TRACEPOINTS and CONFIG_FTRACE_SYSCALLS are enabled, otherwise we get linking errors: [..] MODPOST vmlinux.o kernel/trace/trace_syscalls.o: In function `.L0 ': trace_syscalls.c:(.text+0x1152): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x126c): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x1328): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x14aa): undefined reference to `__tracepoint_sys_enter' trace_syscalls.c:(.text+0x1684): undefined reference to `__tracepoint_sys_exit' trace_syscalls.c:(.text+0x17a0): undefined reference to `__tracepoint_sys_exit' trace_syscalls.c:(.text+0x185c): undefined reference to `__tracepoint_sys_exit' trace_syscalls.c:(.text+0x19de): undefined reference to `__tracepoint_sys_exit' arch/riscv/kernel/ptrace.o: In function `.L0 ': ptrace.c:(.text+0x4dc): undefined reference to `__tracepoint_sys_enter' ptrace.c:(.text+0x632): undefined reference to `__tracepoint_sys_exit' make: *** [Makefile:1036: vmlinux] Error 1 Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Fixes: b78002b395b4 ("riscv: add HAVE_SYSCALL_TRACEPOINTS to Kconfig") Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07riscv: define NR_syscalls in unistd.hDavid Abdurachmanov1-0/+2
This macro is used by kernel/trace/{trace.h,trace_syscalls.c} if we have CONFIG_FTRACE_SYSCALLS enabled. Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Fixes: b78002b395b4 ("riscv: add HAVE_SYSCALL_TRACEPOINTS to Kconfig") Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07riscv: audit: add audit hook in do_syscall_trace_enter/exit()David Abdurachmanov1-0/+5
This patch adds auditing functions on entry to and exit from every system call invocation. Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07riscv: add audit supportDavid Abdurachmanov6-2/+26
On RISC-V (riscv) audit is supported through generic lib/audit.c. The patch adds required arch specific definitions. Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07RISC-V: Support MODULE_SECTIONS mechanism on RV32Zong Li3-28/+32
This patch supports dynamic generate got and plt sections mechanism on rv32. It contains the modification as follows: - Always enable MODULE_SECTIONS (both rv64 and rv32) - Change the fixed size type. This patch had been tested by following modules: btrfs 6795991 0 - Live 0xa544b000 test_static_keys 17304 0 - Live 0xa28be000 zstd_compress 1198986 1 btrfs, Live 0xa2a25000 zstd_decompress 608112 1 btrfs, Live 0xa24e7000 lzo 8787 0 - Live 0xa2049000 xor 27461 1 btrfs, Live 0xa2041000 zram 78849 0 - Live 0xa2276000 netdevsim 55909 0 - Live 0xa202d000 tun 211534 0 - Live 0xa21b5000 fuse 566049 0 - Live 0xa25fb000 nfs_layout_flexfiles 192597 0 - Live 0xa229b000 ramoops 74895 0 - Live 0xa2019000 xfs 3973221 0 - Live 0xa507f000 libcrc32c 3053 2 btrfs,xfs, Live 0xa34af000 lzo_compress 17302 2 btrfs,lzo, Live 0xa347d000 lzo_decompress 7178 2 btrfs,lzo, Live 0xa3451000 raid6_pq 142086 1 btrfs, Live 0xa33a4000 reed_solomon 31022 1 ramoops, Live 0xa31eb000 test_bitmap 3734 0 - Live 0xa31af000 test_bpf 1588736 0 - Live 0xa2c11000 test_kmod 41161 0 - Live 0xa29f8000 test_module 1356 0 - Live 0xa299e000 test_printf 6024 0 [permanent], Live 0xa2971000 test_static_key_base 5797 1 test_static_keys, Live 0xa2931000 test_user_copy 4382 0 - Live 0xa28c9000 xxhash 70501 2 zstd_compress,zstd_decompress, Live 0xa2055000 Signed-off-by: Zong Li <zong@andestech.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07MAINTAINERS: SiFive drivers: add myself as a SiFive driver maintainerPaul Walmsley1-0/+1
I'll be helping Palmer review drivers for SiFive-specific IP blocks, so add myself to the MAINTAINERS file. Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-riscv@lists.infradead.org Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07MAINTAINERS: SiFive drivers: change the git tree to a SiFive git treePaul Walmsley1-1/+1
Update the git tree URL for drivers for SiFive-related IP blocks to point to a SiFive-managed URL. Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-riscv@lists.infradead.org Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07riscv: don't stop itself in smp_send_stopAndreas Schwab1-7/+36
Add IPI_CPU_STOP message and use it in smp_send_stop to stop other cpus, but not itself. Mark cpu offline on reception of IPI_CPU_STOP. Signed-off-by: Andreas Schwab <schwab@suse.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-01-07arch: riscv: support kernel command line forcing when no DTB passedPaul Walmsley1-1/+8
CONFIG_CMDLINE_FORCE doesn't work on RISC-V when no DTB is passed into the kernel. This is because the code that forces the kernel command line only runs if a valid DTB is present at boot. During debugging, it's useful to have the ability to force kernel command lines even when no DTB is present. This patch adds support for doing so. Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org (open list) Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-10-03 07:17:24 +0300