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| 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 /accel/tcg/translate-all.c | |
| parent | 7c10cb38ccb86a0e56fff32bb348aa4b34e17e10 (diff) | |
| download | qemu-5584e2dbe8c9c95ceb178786fb88e5edf625e1b6.zip qemu-5584e2dbe8c9c95ceb178786fb88e5edf625e1b6.tar.gz qemu-5584e2dbe8c9c95ceb178786fb88e5edf625e1b6.tar.bz2 | |
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 'accel/tcg/translate-all.c')
| -rw-r--r-- | accel/tcg/translate-all.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 51ac1f6..979f8e1 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -62,6 +62,7 @@ #include "tb-hash.h" #include "tb-context.h" #include "internal.h" +#include "perf.h" /* Make sure all possible CPU event bits fit in tb->trace_vcpu_dstate */ QEMU_BUILD_BUG_ON(CPU_TRACE_DSTATE_MAX_EVENTS > @@ -406,6 +407,12 @@ TranslationBlock *tb_gen_code(CPUState *cpu, } tb->tc.size = gen_code_size; + /* + * For TARGET_TB_PCREL, attribute all executions of the generated + * code to its first mapping. + */ + perf_report_code(pc, tb, tcg_splitwx_to_rx(gen_code_buf)); + #ifdef CONFIG_PROFILER qatomic_set(&prof->code_time, prof->code_time + profile_getclock() - ti); qatomic_set(&prof->code_in_len, prof->code_in_len + tb->size); |