diff options
Diffstat (limited to 'poky/meta/recipes-devtools/qemu/qemu/0015-cpus.c-Add-error-messages-when-qemi_cpu_kick_thread-.patch')
| -rw-r--r-- | poky/meta/recipes-devtools/qemu/qemu/0015-cpus.c-Add-error-messages-when-qemi_cpu_kick_thread-.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/qemu/qemu/0015-cpus.c-Add-error-messages-when-qemi_cpu_kick_thread-.patch b/poky/meta/recipes-devtools/qemu/qemu/0015-cpus.c-Add-error-messages-when-qemi_cpu_kick_thread-.patch new file mode 100644 index 000000000..a5621caa9 --- /dev/null +++ b/poky/meta/recipes-devtools/qemu/qemu/0015-cpus.c-Add-error-messages-when-qemi_cpu_kick_thread-.patch @@ -0,0 +1,73 @@ +From db914e0f93a32b6731a636517002ecadc207718b Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?An=C3=ADbal=20Lim=C3=B3n?= <anibal.limon@linux.intel.com> +Date: Wed, 12 Aug 2015 15:11:30 -0500 +Subject: [PATCH] cpus.c: Add error messages when qemi_cpu_kick_thread fails. +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Add custom_debug.h with function for print backtrace information. +When pthread_kill fails in qemu_cpu_kick_thread display backtrace and +current cpu information. + +Upstream-Status: Inappropriate +Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com> +--- + cpus.c | 5 +++++ + custom_debug.h | 24 ++++++++++++++++++++++++ + 2 files changed, 29 insertions(+) + create mode 100644 custom_debug.h + +diff --git a/cpus.c b/cpus.c +index 114c29b..c3dd2e0 100644 +--- a/cpus.c ++++ b/cpus.c +@@ -1510,6 +1510,8 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) + return NULL; + } + ++#include "custom_debug.h" ++ + static void qemu_cpu_kick_thread(CPUState *cpu) + { + #ifndef _WIN32 +@@ -1522,6 +1524,9 @@ static void qemu_cpu_kick_thread(CPUState *cpu) + err = pthread_kill(cpu->thread->thread, SIG_IPI); + if (err) { + fprintf(stderr, "qemu:%s: %s", __func__, strerror(err)); ++ fprintf(stderr, "CPU #%d:\n", cpu->cpu_index); ++ cpu_dump_state(cpu, stderr, fprintf, 0); ++ backtrace_print(); + exit(1); + } + #else /* _WIN32 */ +diff --git a/custom_debug.h b/custom_debug.h +new file mode 100644 +index 0000000..f029e45 +--- /dev/null ++++ b/custom_debug.h +@@ -0,0 +1,24 @@ ++#include <execinfo.h> ++#include <stdio.h> ++#define BACKTRACE_MAX 128 ++static void backtrace_print(void) ++{ ++ int nfuncs = 0; ++ void *buf[BACKTRACE_MAX]; ++ char **symbols; ++ int i; ++ ++ nfuncs = backtrace(buf, BACKTRACE_MAX); ++ ++ symbols = backtrace_symbols(buf, nfuncs); ++ if (symbols == NULL) { ++ fprintf(stderr, "backtrace_print failed to get symbols"); ++ return; ++ } ++ ++ fprintf(stderr, "Backtrace ...\n"); ++ for (i = 0; i < nfuncs; i++) ++ fprintf(stderr, "%s\n", symbols[i]); ++ ++ free(symbols); ++} |
