Linus Torvalds
ce9f411be7
Stop the ad-hoc games with -Wno-maybe-initialized ...
commit 78a5255ffb6a1af189a83e493d916ba1c54d8c75 upstream.
We have some rather random rules about when we accept the
"maybe-initialized" warnings, and when we don't.
For example, we consider it unreliable for gcc versions < 4.9, but also
if -O3 is enabled, or if optimizing for size. And then various kernel
config options disabled it, because they know that they trigger that
warning by confusing gcc sufficiently (ie PROFILE_ALL_BRANCHES).
And now gcc-10 seems to be introducing a lot of those warnings too, so
it falls under the same heading as 4.9 did.
At the same time, we have a very straightforward way to _enable_ that
warning when wanted: use "W=2" to enable more warnings.
So stop playing these ad-hoc games, and just disable that warning by
default, with the known and straight-forward "if you want to work on the
extra compiler warnings, use W=123".
Would it be great to have code that is always so obvious that it never
confuses the compiler whether a variable is used initialized or not?
Yes, it would. In a perfect world, the compilers would be smarter, and
our source code would be simpler.
That's currently not the world we live in, though.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-20 08:15:37 +02:00
blktrace: fix dereference after null check
2020-05-20 08:15:31 +02:00
bpf: fix check of allowed specifiers in bpf_trace_printk
2018-12-17 09:38:33 +01:00
ftrace: fpid_next() should increase position index
2020-02-28 15:42:40 +01:00
Stop the ad-hoc games with -Wno-maybe-initialized
2020-05-20 08:15:37 +02:00
Disable the __builtin_return_address() warning globally after all
2016-10-12 10:23:41 -07:00
cpufreq: schedutil: New governor based on scheduler utilization data
2016-04-02 01:09:12 +02:00
trace: Fix preempt_enable_no_resched() abuse
2019-05-02 09:32:00 +02:00
ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark
2015-11-03 16:19:02 -05:00
tracing: Add a vmalloc_sync_mappings() for safe measure
2020-05-20 08:15:27 +02:00
tracing: Silence GCC 9 array bounds warning
2019-07-10 09:55:28 +02:00
tracing: Only benchmark the time tracepoints take if tracing is on
2015-11-02 13:34:58 -05:00
tracing: Remove {start,stop}_branch_trace
2015-10-21 10:10:09 -04:00
tracing: Export tracing clock functions
2015-05-12 15:56:57 -04:00
tracing: Add NMI tracing in hwlat detector
2016-09-02 12:47:55 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2016-05-17 16:26:30 -07:00
tracing: Fix partial reading of trace event's id file
2019-05-25 18:26:49 +02:00
tracing: Fix regex_match_front() to not over compare the test string
2018-05-16 10:08:43 +02:00
tracing: Use strncpy instead of memcpy for string keys in hist triggers
2019-03-23 13:19:45 +01:00
tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation
2020-04-24 07:59:06 +02:00
tracing: ftrace_event_is_function() can return boolean
2015-11-02 14:28:05 -05:00
ftrace: Have set_ftrace_pid use the bitmap like events do
2016-06-20 09:54:19 -04:00
tracing: Fix missing return symbol in function_graph output
2018-07-11 16:26:43 +02:00
tracing/hwlat: Don't ignore outer-loop duration when calculating max_latency
2019-10-17 13:42:46 -07:00
tracing: Remove redundant reset per-CPU buff in irqsoff tracer
2016-03-18 16:39:11 -04:00
tracing: Silence GCC 9 array bounds warning
2019-07-10 09:55:28 +02:00
tracing: Quiet gcc warning about maybe unused link variable
2018-08-03 07:55:12 +02:00
tracing: Expose CPU physical addresses (resource values) for PCI devices
2016-06-20 09:54:22 -04:00
tracing: Fix typoes in code comment and printk in trace_nop.c
2016-03-08 11:23:57 -05:00
tracing: Add NMI tracing in hwlat detector
2016-09-02 12:47:55 -04:00
tracing: Turn seq_print_user_ip() into a static function
2015-09-28 10:16:12 -04:00
tracing: Handle NULL formats in hold_module_trace_bprintk_format()
2016-06-20 09:46:12 -04:00
tracing: probeevent: Fix to support minus offset from symbol
2018-03-28 18:39:23 +02:00
tracing: probeevent: Fix to support minus offset from symbol
2018-03-28 18:39:23 +02:00
sched/core: Fix trace_sched_switch()
2015-10-06 17:08:15 +02:00
kernel/trace: Fix do not unregister tracepoints when register sched_migrate_task fail
2020-01-14 20:04:26 +01:00
ftrace: Fix selftest goto location on error
2017-09-27 14:39:23 +02:00
tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined
2020-01-14 20:04:26 +01:00
tracing: Fix very unlikely race of registering two stat tracers
2020-02-28 15:42:21 +01:00
tracing/syscalls: fix multiline in error message text
2016-09-29 10:25:23 +02:00
tracing/uprobes: Fix output for multiple string arguments
2019-02-20 10:18:32 +01:00
tracing: Have the histogram compare functions convert to u64 first
2020-01-12 11:24:14 +01:00
tracing: Update some tracing_map constants and comments
2016-04-19 12:16:06 -04:00
ce9f411be7