[v1] Logging cleanup and per-thread logfiles

[PULL for-7.1 05/36] util/log: Move qemu_log_lock, qemu_log_unlock out of line

Richard Henderson posted 36 patches 3 years, 10 months ago

Diff against v1 v2 v3
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Maintainers: Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, Warner Losh <imp@bsdimp.com>, Kyle Evans <kevans@freebsd.org>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <f4bug@amsat.org>, Yanan Wang <wangyanan55@huawei.com>, Pavel Pisa <pisa@cmp.felk.cvut.cz>, Vikram Garhwal <fnu.vikram@xilinx.com>, Jason Wang <jasowang@redhat.com>, Stefano Stabellini <sstabellini@kernel.org>, Anthony Perard <anthony.perard@citrix.com>, Paul Durrant <paul@xen.org>, Stefan Weil <sw@weilnetz.de>, Laurent Vivier <laurent@vivier.eu>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Markus Armbruster <armbru@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, Eric Blake <eblake@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>, Fam Zheng <fam@euphon.net>, Peter Maydell <peter.maydell@linaro.org>, Michael Rolnik <mrolnik@gmail.com>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Taylor Simpson <tsimpson@quicinc.com>, Aurelien Jarno <aurelien@aurel32.net>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, Chris Wulff <crwulff@gmail.com>, Marek Vasut <marex@denx.de>, Stafford Horne <shorne@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, Daniel Henrique Barboza <danielhb413@gmail.com>, David Gibson <david@gibson.dropbear.id.au>, Greg Kurz <groug@kaod.org>, Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Yoshinori Sato <ysato@users.sourceforge.jp>, David Hildenbrand <david@redhat.com>, Cornelia Huck <cohuck@redhat.com>, Thomas Huth <thuth@redhat.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Artyom Tarasenko <atar4qemu@gmail.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Max Filippov <jcmvbkbc@gmail.com>

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[PULL for-7.1 05/36] util/log: Move qemu_log_lock, qemu_log_unlock out of line

Posted by Richard Henderson 3 years, 10 months ago

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 include/qemu/log.h | 28 +++-------------------------
 util/log.c         | 23 +++++++++++++++++++++++
 2 files changed, 26 insertions(+), 25 deletions(-)

diff --git a/include/qemu/log.h b/include/qemu/log.h
index 64f28785ae..10e284291c 100644
--- a/include/qemu/log.h
+++ b/include/qemu/log.h
@@ -65,32 +65,10 @@ static inline bool qemu_log_separate(void)
 /* LOG_STRACE is used for user-mode strace logging. */
 #define LOG_STRACE         (1 << 19)
 
-/* Lock output for a series of related logs.  Since this is not needed
- * for a single qemu_log / qemu_log_mask / qemu_log_mask_and_addr, we
- * assume that qemu_loglevel_mask has already been tested, and that
- * qemu_loglevel is never set when qemu_logfile is unset.
- */
+/* Lock/unlock output. */
 
-static inline FILE *qemu_log_lock(void)
-{
-    QemuLogFile *logfile;
-    rcu_read_lock();
-    logfile = qatomic_rcu_read(&qemu_logfile);
-    if (logfile) {
-        qemu_flockfile(logfile->fd);
-        return logfile->fd;
-    } else {
-        return NULL;
-    }
-}
-
-static inline void qemu_log_unlock(FILE *fd)
-{
-    if (fd) {
-        qemu_funlockfile(fd);
-    }
-    rcu_read_unlock();
-}
+FILE *qemu_log_lock(void);
+void qemu_log_unlock(FILE *fd);
 
 /* Logging functions: */
 
diff --git a/util/log.c b/util/log.c
index 00773ab717..248db6211e 100644
--- a/util/log.c
+++ b/util/log.c
@@ -34,6 +34,29 @@ int qemu_loglevel;
 static int log_append = 0;
 static GArray *debug_regions;
 
+/* Lock/unlock output. */
+
+FILE *qemu_log_lock(void)
+{
+    QemuLogFile *logfile;
+    rcu_read_lock();
+    logfile = qatomic_rcu_read(&qemu_logfile);
+    if (logfile) {
+        qemu_flockfile(logfile->fd);
+        return logfile->fd;
+    } else {
+        return NULL;
+    }
+}
+
+void qemu_log_unlock(FILE *fd)
+{
+    if (fd) {
+        qemu_funlockfile(fd);
+    }
+    rcu_read_unlock();
+}
+
 /* Return the number of characters emitted.  */
 int qemu_log(const char *fmt, ...)
 {
-- 
2.25.1

Re: [PULL for-7.1 05/36] util/log: Move qemu_log_lock, qemu_log_unlock out of line

Posted by Philippe Mathieu-Daudé 3 years, 10 months ago

On 20/3/22 18:11, Richard Henderson wrote:
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   include/qemu/log.h | 28 +++-------------------------
>   util/log.c         | 23 +++++++++++++++++++++++
>   2 files changed, 26 insertions(+), 25 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Re: [PULL for-7.1 05/36] util/log: Move qemu_log_lock, qemu_log_unlock out of line

Posted by Alex Bennée 3 years, 10 months ago

Richard Henderson <richard.henderson@linaro.org> writes:

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée