From f670a562af4bd6ef9adee7654cf5129f14a277a8 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Fri, 12 Jun 2020 10:54:40 +0200 Subject: [PATCH] hw/tpm: Make TRACE_TPM_UTIL_SHOW_BUFFER check local to tpm_util.c MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The trace_event_get_state_backends() call is useful to avoid making extensive calls (usually preparing arguments passed to the tracing framework. In this case, the extensive work is done in tpm_util_show_buffer(), and the arguments used to call it don't involve extra processing. Simplify by moving the TRACE_TPM_UTIL_SHOW_BUFFER check to tpm_util_show_buffer. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Stefan Berger Message-id: 20200612085444.8362-9-philmd@redhat.com Signed-off-by: Stefan Berger --- hw/tpm/tpm_tis_common.c | 8 ++------ hw/tpm/tpm_util.c | 3 +++ 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/hw/tpm/tpm_tis_common.c b/hw/tpm/tpm_tis_common.c index 94704870f6..1779b4fc1e 100644 --- a/hw/tpm/tpm_tis_common.c +++ b/hw/tpm/tpm_tis_common.c @@ -78,9 +78,7 @@ static void tpm_tis_sts_set(TPMLocality *l, uint32_t flags) */ static void tpm_tis_tpm_send(TPMState *s, uint8_t locty) { - if (trace_event_get_state_backends(TRACE_TPM_UTIL_SHOW_BUFFER)) { - tpm_util_show_buffer(s->buffer, s->be_buffer_size, "To TPM"); - } + tpm_util_show_buffer(s->buffer, s->be_buffer_size, "To TPM"); /* * rw_offset serves as length indicator for length of data; @@ -246,9 +244,7 @@ void tpm_tis_request_completed(TPMState *s, int ret) s->loc[locty].state = TPM_TIS_STATE_COMPLETION; s->rw_offset = 0; - if (trace_event_get_state_backends(TRACE_TPM_UTIL_SHOW_BUFFER)) { - tpm_util_show_buffer(s->buffer, s->be_buffer_size, "From TPM"); - } + tpm_util_show_buffer(s->buffer, s->be_buffer_size, "From TPM"); if (TPM_TIS_IS_VALID_LOCTY(s->next_locty)) { tpm_tis_abort(s); diff --git a/hw/tpm/tpm_util.c b/hw/tpm/tpm_util.c index c0a0f3d71f..12f19465c5 100644 --- a/hw/tpm/tpm_util.c +++ b/hw/tpm/tpm_util.c @@ -357,6 +357,9 @@ void tpm_util_show_buffer(const unsigned char *buffer, size_t len, i; char *line_buffer, *p; + if (!trace_event_get_state_backends(TRACE_TPM_UTIL_SHOW_BUFFER)) { + return; + } len = MIN(tpm_cmd_get_size(buffer), buffer_size); /* -- 2.30.2