Jan Kara c3dbe541ef blktrace: Avoid sparse warnings when assigning q->blk_trace ... Mostly for historical reasons, q->blk_trace is assigned through xchg() and cmpxchg() atomic operations. Although this is correct, sparse complains about this because it violates rcu annotations since commit c780e86dd4 ("blktrace: Protect q->blk_trace with RCU") which started to use rcu for accessing q->blk_trace. Furthermore there's no real need for atomic operations anymore since all changes to q->blk_trace happen under q->blk_trace_mutex and since it also makes more sense to check if q->blk_trace is set with the mutex held earlier. So let's just replace xchg() with rcu_replace_pointer() and cmpxchg() with explicit check and rcu_assign_pointer(). This makes the code more efficient and sparse happy. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2020-06-17 09:07:11 -06:00
..
blktrace.c	blktrace: Avoid sparse warnings when assigning q->blk_trace	2020-06-17 09:07:11 -06:00
bpf_trace.c	maccess: always use strict semantics for probe_kernel_read	2020-06-09 09:39:15 -07:00
fgraph.c
ftrace_internal.h	x86/ftrace: Have ftrace trampolines turn read-only at the end of system boot up	2020-05-12 18:24:34 -04:00
ftrace.c	Tracing updates for 5.8:	2020-06-09 10:06:18 -07:00
Kconfig	Tracing updates for 5.8:	2020-06-09 10:06:18 -07:00
kprobe_event_gen_test.c
Makefile	Rebase locking/kcsan to locking/urgent	2020-06-11 20:02:46 +02:00
power-traces.c
preemptirq_delay_test.c	tracing: Wait for preempt irq delay thread to execute	2020-05-11 17:00:34 -04:00
ring_buffer_benchmark.c
ring_buffer.c	ring-buffer: Remove all BUG() calls	2020-05-14 08:51:02 -04:00
rpm-traces.c
synth_event_gen_test.c
trace_benchmark.c
trace_benchmark.h
trace_boot.c	tracing/boottime: Fix kprobe event API usage	2020-05-06 09:04:11 -04:00
trace_branch.c
trace_clock.c
trace_dynevent.c
trace_dynevent.h
trace_entries.h
trace_event_perf.c
trace_events_filter_test.h
trace_events_filter.c
trace_events_hist.c	tracing: Move synthetic events to a separate file	2020-06-01 08:23:22 -04:00
trace_events_inject.c
trace_events_synth.c	tracing: Move synthetic events to a separate file	2020-06-01 08:23:22 -04:00
trace_events_trigger.c
trace_events.c	tracing: Add hist_debug trace event files for histogram debugging	2020-06-01 08:22:30 -04:00
trace_export.c
trace_functions_graph.c
trace_functions.c
trace_hwlat.c
trace_irqsoff.c
trace_kdb.c
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-06-13 16:27:13 -07:00
trace_mmiotrace.c
trace_nop.c
trace_output.c	mmap locking API: use coccinelle to convert mmap_sem rwsem call sites	2020-06-09 09:39:14 -07:00
trace_output.h
trace_preemptirq.c	x86/entry: Rename trace_hardirqs_off_prepare()	2020-06-11 15:15:24 +02:00
trace_printk.c
trace_probe_tmpl.h
trace_probe.c	tracing/probe: reverse arguments to list_add	2020-05-19 21:10:50 -04:00
trace_probe.h
trace_sched_switch.c
trace_sched_wakeup.c
trace_selftest_dynamic.c
trace_selftest.c
trace_seq.c
trace_stack.c	trace: fix an incorrect __user annotation on stack_trace_sysctl	2020-06-08 10:13:56 -04:00
trace_stat.c
trace_stat.h
trace_synth.h	tracing: Move synthetic events to a separate file	2020-06-01 08:23:22 -04:00
trace_syscalls.c
trace_uprobe.c	tracing/probe: Fix bpf_task_fd_query() for kprobes and uprobes	2020-06-09 11:10:12 -07:00
trace.c	Tracing updates for 5.8:	2020-06-09 10:06:18 -07:00
trace.h	tracing: Add hist_debug trace event files for histogram debugging	2020-06-01 08:22:30 -04:00
tracing_map.c	tracing: Convert local functions in tracing_map.c to static	2020-04-22 22:07:26 -04:00
tracing_map.h