AcoSail/kernel_optimize_test
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6ee40511cb
kernel_optimize_test/kernel/trace
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Yuming Han 6ee40511cb tracing: use kvcalloc for tgid_map array allocation 
Fail to allocate memory for tgid_map, because it requires order-6 page.
detail as:

c3 sh: page allocation failure: order:6,
   mode:0x140c0c0(GFP_KERNEL), nodemask=(null)
c3 sh cpuset=/ mems_allowed=0
c3 CPU: 3 PID: 5632 Comm: sh Tainted: G        W  O    4.14.133+ #10
c3 Hardware name: Generic DT based system
c3 Backtrace:
c3 [<c010bdbc>] (dump_backtrace) from [<c010c08c>](show_stack+0x18/0x1c)
c3 [<c010c074>] (show_stack) from [<c0993c54>](dump_stack+0x84/0xa4)
c3 [<c0993bd0>] (dump_stack) from [<c0229858>](warn_alloc+0xc4/0x19c)
c3 [<c0229798>] (warn_alloc) from [<c022a6e4>](__alloc_pages_nodemask+0xd18/0xf28)
c3 [<c02299cc>] (__alloc_pages_nodemask) from [<c0248344>](kmalloc_order+0x20/0x38)
c3 [<c0248324>] (kmalloc_order) from [<c0248380>](kmalloc_order_trace+0x24/0x108)
c3 [<c024835c>] (kmalloc_order_trace) from [<c01e6078>](set_tracer_flag+0xb0/0x158)
c3 [<c01e5fc8>] (set_tracer_flag) from [<c01e6404>](trace_options_core_write+0x7c/0xcc)
c3 [<c01e6388>] (trace_options_core_write) from [<c0278b1c>](__vfs_write+0x40/0x14c)
c3 [<c0278adc>] (__vfs_write) from [<c0278e10>](vfs_write+0xc4/0x198)
c3 [<c0278d4c>] (vfs_write) from [<c027906c>](SyS_write+0x6c/0xd0)
c3 [<c0279000>] (SyS_write) from [<c01079a0>](ret_fast_syscall+0x0/0x54)

Switch to use kvcalloc to avoid unexpected allocation failures.

Link: http://lkml.kernel.org/r/1571888070-24425-1-git-send-email-chunyan.zhang@unisoc.com

Signed-off-by: Yuming Han <yuming.han@unisoc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2019-11-14 13:15:11 -05:00
..
blktrace.c blktrace: no need to check return value of debugfs_create functions 2019-06-03 15:39:39 +02:00
bpf_trace.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-28 17:47:33 -07:00
fgraph.c fgraph: Fix function type mismatches of ftrace_graph_return using ftrace_stub 2019-11-14 13:13:43 -05:00
ftrace_internal.h treewide: Rename rcu_dereference_raw_notrace() to _check() 2019-08-01 14:16:21 -07:00
ftrace.c tracing: Use generic type for comparator function 2019-11-14 13:15:11 -05:00
Kconfig preemptirq_delay_test: Add the burst feature and a sysfs trigger 2019-11-13 09:37:28 -05:00
Makefile tracing: Add unified dynamic event framework 2018-12-08 20:54:09 -05:00
power-traces.c
preemptirq_delay_test.c preemptirq_delay_test: Add the burst feature and a sysfs trigger 2019-11-13 09:37:28 -05:00
ring_buffer_benchmark.c tracing: Use CONFIG_PREEMPTION 2019-07-31 19:03:35 +02:00
ring_buffer.c ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS 2019-05-28 09:36:19 -04:00
rpm-traces.c
trace_benchmark.c rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs() 2018-05-15 10:27:29 -07:00
trace_benchmark.h tracing: Fix SPDX format headers to use C++ style comments 2018-08-16 19:08:06 -04:00
trace_branch.c tracing: Use generic type for comparator function 2019-11-14 13:15:11 -05:00
trace_clock.c tracing: Add SPDX License format tags to tracing files 2018-08-16 19:08:06 -04:00
trace_dynevent.c tracing: Add tracing_check_open_get_tr() 2019-10-12 20:44:07 -04:00
trace_dynevent.h tracing/dynevent: Pass extra arguments to match operation 2019-08-31 12:19:38 -04:00
trace_entries.h tracing: Change the function format to display function names by perf 2019-02-11 14:53:43 -05:00
trace_event_perf.c tracing: Fix race in perf_trace_buf initialization 2019-10-21 19:38:28 -04:00
trace_events_filter_test.h tracing: Fix SPDX format headers to use C++ style comments 2018-08-16 19:08:06 -04:00
trace_events_filter.c tracing: Have error path in predicate_parse() free its allocated memory 2019-09-28 17:13:39 -04:00
trace_events_hist.c tracing: Fix "gfp_t" format for synthetic events 2019-10-18 14:42:53 -04:00
trace_events_trigger.c tracing: Add locked_down checks to the open calls of files created for tracefs 2019-10-12 20:48:06 -04:00
trace_events.c tracing: Adding NULL checks for trace_array descriptor pointer 2019-11-13 09:37:29 -05:00
trace_export.c tracing: Make internal ftrace events static 2019-11-13 09:37:29 -05:00
trace_functions_graph.c fgraph: Remove redundant ftrace_graph_notrace_addr() test 2019-07-30 21:50:03 -04:00
trace_functions.c tracing: Update stack trace skipping for ORC unwinder 2018-01-23 15:57:00 -05:00
trace_hwlat.c tracing/hwlat: Fix a few trivial nits 2019-11-14 13:15:11 -05:00
trace_irqsoff.c The biggest change for this release is in the histogram code. 2019-03-11 17:01:32 -07:00
trace_kdb.c tracing: Silence GCC 9 array bounds warning 2019-05-25 23:04:30 -04:00
trace_kprobe_selftest.c selftest/ftrace: Move kprobe selftest function to separate compile unit 2018-07-30 18:41:04 -04:00
trace_kprobe_selftest.h tracing: Fix SPDX format headers to use C++ style comments 2018-08-16 19:08:06 -04:00
trace_kprobe.c tracing: Add locked_down checks to the open calls of files created for tracefs 2019-10-12 20:48:06 -04:00
trace_mmiotrace.c
trace_nop.c
trace_output.c tracing: Be more clever when dumping hex in __print_hex() 2019-09-17 11:21:28 -04:00
trace_output.h tracing: Fix SPDX format headers to use C++ style comments 2018-08-16 19:08:06 -04:00
trace_preemptirq.c kprobes: Prohibit probing on hardirq tracers 2019-02-13 08:16:40 +01:00
trace_printk.c tracing: Add locked_down checks to the open calls of files created for tracefs 2019-10-12 20:48:06 -04:00
trace_probe_tmpl.h tracing/probe: Support user-space dereference 2019-05-25 23:04:42 -04:00
trace_probe.c tracing/probe: Fix to check the difference of nr_args before adding probe 2019-09-28 17:07:53 -04:00
trace_probe.h tracing/probe: Reject exactly same probe event 2019-09-19 11:09:16 -04:00
trace_sched_switch.c
trace_sched_wakeup.c sched/core: Convert get_task_struct() to return the task 2019-07-25 15:51:54 +02:00
trace_selftest_dynamic.c ftrace: Mark function tracer test functions noinline/noclone 2018-01-23 15:57:29 -05:00
trace_selftest.c function_graph: Have selftest also emulate tr->reset() as it did with tr->init() 2019-04-21 19:46:56 -04:00
trace_seq.c tracing: Add SPDX License format tags to tracing files 2018-08-16 19:08:06 -04:00
trace_stack.c tracing: Add locked_down checks to the open calls of files created for tracefs 2019-10-12 20:48:06 -04:00
trace_stat.c tracing: Use generic type for comparator function 2019-11-14 13:15:11 -05:00
trace_stat.h tracing: Use generic type for comparator function 2019-11-14 13:15:11 -05:00
trace_syscalls.c syscalls: Remove start and number from syscall_get_arguments() args 2019-04-05 09:26:43 -04:00
trace_uprobe.c tracing: Add locked_down checks to the open calls of files created for tracefs 2019-10-12 20:48:06 -04:00
trace.c tracing: use kvcalloc for tgid_map array allocation 2019-11-14 13:15:11 -05:00
trace.h tracing: Declare newly exported APIs in include/linux/trace.h 2019-11-13 09:37:29 -05:00
tracing_map.c tracing: Add SPDX License format tags to tracing files 2018-08-16 19:08:06 -04:00
tracing_map.h tracing: Fix SPDX format headers to use C++ style comments 2018-08-16 19:08:06 -04:00