mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
4397bd2f90
When perf exits with some error it shows the error message with ui__error() or ui__warning() and then calls ui__exit() during exit_browser(). On TUI, it then shows a window titled "Fatal Error" to inform user a last message which might be related with this condition. However it sometimes contains no message and just annoyes users. The usual case for this is running perf top as normal user. (And /proc/sys/kernel/perf_event_paranoid being 1). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1421736050-5283-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
175 lines
3.0 KiB
C
175 lines
3.0 KiB
C
#include <signal.h>
|
|
#include <stdbool.h>
|
|
#ifdef HAVE_BACKTRACE_SUPPORT
|
|
#include <execinfo.h>
|
|
#endif
|
|
|
|
#include "../../util/cache.h"
|
|
#include "../../util/debug.h"
|
|
#include "../browser.h"
|
|
#include "../helpline.h"
|
|
#include "../ui.h"
|
|
#include "../util.h"
|
|
#include "../libslang.h"
|
|
#include "../keysyms.h"
|
|
#include "tui.h"
|
|
|
|
static volatile int ui__need_resize;
|
|
|
|
extern struct perf_error_ops perf_tui_eops;
|
|
extern bool tui_helpline__set;
|
|
|
|
extern void hist_browser__init_hpp(void);
|
|
|
|
void ui__refresh_dimensions(bool force)
|
|
{
|
|
if (force || ui__need_resize) {
|
|
ui__need_resize = 0;
|
|
pthread_mutex_lock(&ui__lock);
|
|
SLtt_get_screen_size();
|
|
SLsmg_reinit_smg();
|
|
pthread_mutex_unlock(&ui__lock);
|
|
}
|
|
}
|
|
|
|
static void ui__sigwinch(int sig __maybe_unused)
|
|
{
|
|
ui__need_resize = 1;
|
|
}
|
|
|
|
static void ui__setup_sigwinch(void)
|
|
{
|
|
static bool done;
|
|
|
|
if (done)
|
|
return;
|
|
|
|
done = true;
|
|
pthread__unblock_sigwinch();
|
|
signal(SIGWINCH, ui__sigwinch);
|
|
}
|
|
|
|
int ui__getch(int delay_secs)
|
|
{
|
|
struct timeval timeout, *ptimeout = delay_secs ? &timeout : NULL;
|
|
fd_set read_set;
|
|
int err, key;
|
|
|
|
ui__setup_sigwinch();
|
|
|
|
FD_ZERO(&read_set);
|
|
FD_SET(0, &read_set);
|
|
|
|
if (delay_secs) {
|
|
timeout.tv_sec = delay_secs;
|
|
timeout.tv_usec = 0;
|
|
}
|
|
|
|
err = select(1, &read_set, NULL, NULL, ptimeout);
|
|
|
|
if (err == 0)
|
|
return K_TIMER;
|
|
|
|
if (err == -1) {
|
|
if (errno == EINTR)
|
|
return K_RESIZE;
|
|
return K_ERROR;
|
|
}
|
|
|
|
key = SLang_getkey();
|
|
if (key != K_ESC)
|
|
return key;
|
|
|
|
FD_ZERO(&read_set);
|
|
FD_SET(0, &read_set);
|
|
timeout.tv_sec = 0;
|
|
timeout.tv_usec = 20;
|
|
err = select(1, &read_set, NULL, NULL, &timeout);
|
|
if (err == 0)
|
|
return K_ESC;
|
|
|
|
SLang_ungetkey(key);
|
|
return SLkp_getkey();
|
|
}
|
|
|
|
#ifdef HAVE_BACKTRACE_SUPPORT
|
|
static void ui__signal_backtrace(int sig)
|
|
{
|
|
void *stackdump[32];
|
|
size_t size;
|
|
|
|
ui__exit(false);
|
|
psignal(sig, "perf");
|
|
|
|
printf("-------- backtrace --------\n");
|
|
size = backtrace(stackdump, ARRAY_SIZE(stackdump));
|
|
backtrace_symbols_fd(stackdump, size, STDOUT_FILENO);
|
|
|
|
exit(0);
|
|
}
|
|
#else
|
|
# define ui__signal_backtrace ui__signal
|
|
#endif
|
|
|
|
static void ui__signal(int sig)
|
|
{
|
|
ui__exit(false);
|
|
psignal(sig, "perf");
|
|
exit(0);
|
|
}
|
|
|
|
int ui__init(void)
|
|
{
|
|
int err;
|
|
|
|
SLutf8_enable(-1);
|
|
SLtt_get_terminfo();
|
|
SLtt_get_screen_size();
|
|
|
|
err = SLsmg_init_smg();
|
|
if (err < 0)
|
|
goto out;
|
|
err = SLang_init_tty(0, 0, 0);
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
err = SLkp_init();
|
|
if (err < 0) {
|
|
pr_err("TUI initialization failed.\n");
|
|
goto out;
|
|
}
|
|
|
|
SLkp_define_keysym((char *)"^(kB)", SL_KEY_UNTAB);
|
|
|
|
ui_helpline__init();
|
|
ui_browser__init();
|
|
tui_progress__init();
|
|
|
|
signal(SIGSEGV, ui__signal_backtrace);
|
|
signal(SIGFPE, ui__signal_backtrace);
|
|
signal(SIGINT, ui__signal);
|
|
signal(SIGQUIT, ui__signal);
|
|
signal(SIGTERM, ui__signal);
|
|
|
|
perf_error__register(&perf_tui_eops);
|
|
|
|
hist_browser__init_hpp();
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
void ui__exit(bool wait_for_ok)
|
|
{
|
|
if (wait_for_ok && tui_helpline__set)
|
|
ui__question_window("Fatal Error",
|
|
ui_helpline__last_msg,
|
|
"Press any key...", 0);
|
|
|
|
SLtt_set_cursor_visibility(1);
|
|
SLsmg_refresh();
|
|
SLsmg_reset_smg();
|
|
SLang_reset_tty();
|
|
|
|
perf_error__unregister(&perf_tui_eops);
|
|
}
|