diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-01-12 16:20:13 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-01-16 10:14:12 -1000 |
| commit | 5584e2dbe8c9c95ceb178786fb88e5edf625e1b6 (patch) | |
| tree | 6b117636e203be8e4246aa30704d784243e4deee /softmmu | |
| parent | 7c10cb38ccb86a0e56fff32bb348aa4b34e17e10 (diff) | |
tcg: add perfmap and jitdump
Add ability to dump /tmp/perf-<pid>.map and jit-<pid>.dump.
The first one allows the perf tool to map samples to each individual
translation block. The second one adds the ability to resolve symbol
names, line numbers and inspect JITed code.
Example of use:
perf record qemu-x86_64 -perfmap ./a.out
perf report
or
perf record -k 1 qemu-x86_64 -jitdump ./a.out
DEBUGINFOD_URLS= perf inject -j -i perf.data -o perf.data.jitted
perf report -i perf.data.jitted
Co-developed-by: Vanderson M. do Rosario <vandersonmr2@gmail.com>
Co-developed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230112152013.125680-4-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'softmmu')
| -rw-r--r-- | softmmu/vl.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/softmmu/vl.c b/softmmu/vl.c index 9bd0e52d01..9177d95d4e 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -96,6 +96,9 @@ #include "fsdev/qemu-fsdev.h" #endif #include "sysemu/qtest.h" +#ifdef CONFIG_TCG +#include "accel/tcg/perf.h" +#endif #include "disas/disas.h" @@ -2926,6 +2929,14 @@ void qemu_init(int argc, char **argv) case QEMU_OPTION_DFILTER: qemu_set_dfilter_ranges(optarg, &error_fatal); break; +#if defined(CONFIG_TCG) && defined(CONFIG_LINUX) + case QEMU_OPTION_perfmap: + perf_enable_perfmap(); + break; + case QEMU_OPTION_jitdump: + perf_enable_jitdump(); + break; +#endif case QEMU_OPTION_seed: qemu_guest_random_seed_main(optarg, &error_fatal); break; |