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Tracing: Fixes for 5.12

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Two fixes:
 
  - Fix an unsafe printf string usage in a kmem trace event
  - Fix spelling in output from the latency-collector tool
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Merge tag 'trace-v5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Two fixes:

   - Fix an unsafe printf string usage in a kmem trace event

   - Fix spelling in output from the latency-collector tool"

* tag 'trace-v5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/tools: fix a couple of spelling mistakes
  mm, tracing: Fix kmem_cache_free trace event to not print stale pointers
This commit is contained in:
Linus Torvalds 2021-02-26 10:14:18 -08:00
commit 8b1e2c50bc
2 changed files with 6 additions and 6 deletions
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6
include/trace/events/kmem.h
View File

@ -144,17 +144,17 @@ TRACE_EVENT(kmem_cache_free,
TP_STRUCT__entry(
__field( unsigned long, call_site )
__field( const void *, ptr )
__field( const char *, name )
__string( name, name )
),
TP_fast_assign(
__entry->call_site = call_site;
__entry->ptr = ptr;
__entry->name = name;
__assign_str(name, name);
),
TP_printk("call_site=%pS ptr=%p name=%s",
(void *)__entry->call_site, __entry->ptr, __entry->name)
(void *)__entry->call_site, __entry->ptr, __get_str(name))
);
TRACE_EVENT(mm_page_free,

6
tools/tracing/latency/latency-collector.c
View File

@ -1650,7 +1650,7 @@ static void start_printthread(void)
if (ufd < 0 ||
read(ufd, seed, sizeof(*seed)) != sizeof(*seed)) {
printf(
"Warning! Using trivial random nummer seed, since %s not available\n",
"Warning! Using trivial random number seed, since %s not available\n",
DEV_URANDOM);
fflush(stdout);
*seed = i;
@ -1711,8 +1711,8 @@ static void show_usage(void)
"\t\t\tbeginning, end, and backtrace.\n\n"
"-g, --graph\t\tEnable the display-graph option in trace_option. This\n"
"\t\t\toption causes ftrace to show the functionph of how\n"
"\t\t\tfunctions are calling other functions.\n\n"
"\t\t\toption causes ftrace to show the graph of how functions\n"
"\t\t\tare calling other functions.\n\n"
"-c, --policy POL\tRun the program with scheduling policy POL. POL can be\n"
"\t\t\tother, batch, idle, rr or fifo. The default is rr. When\n"