#include "util.h" #include "../debug.h" /* * Default error logging functions */ static int perf_stdio__error(const char *format, va_list args) { fprintf(stderr, "Error:\n"); vfprintf(stderr, format, args); return 0; } static int perf_stdio__warning(const char *format, va_list args) { fprintf(stderr, "Warning:\n"); vfprintf(stderr, format, args); return 0; } static struct perf_error_ops default_eops = { .error = perf_stdio__error, .warning = perf_stdio__warning, }; static struct perf_error_ops *perf_eops = &default_eops; int ui__error(const char *format, ...) { int ret; va_list args; va_start(args, format); ret = perf_eops->error(format, args); va_end(args); return ret; } int ui__warning(const char *format, ...) { int ret; va_list args; va_start(args, format); ret = perf_eops->warning(format, args); va_end(args); return ret; } /** * perf_error__register - Register error logging functions * @eops: The pointer to error logging function struct * * Register UI-specific error logging functions. Before calling this, * other logging functions should be unregistered, if any. */ int perf_error__register(struct perf_error_ops *eops) { if (perf_eops != &default_eops) return -1; perf_eops = eops; return 0; } /** * perf_error__unregister - Unregister error logging functions * @eops: The pointer to error logging function struct * * Unregister already registered error logging functions. */ int perf_error__unregister(struct perf_error_ops *eops) { if (perf_eops != eops) return -1; perf_eops = &default_eops; return 0; } x/net-next.git/refs/?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>refslogtreecommitdiff
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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-30 19:27:10 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-31 09:13:49 -0500
commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch)
tree370efda701f03cccf21e02bb1fdd3b852547d75c /net/strparser/Kconfig
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'net/strparser/Kconfig')