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Re: [PATCH v3 02/13] xen/spinlock: reduce lock profile ifdefs


  • To: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Juergen Gross <jgross@xxxxxxxx>
  • Date: Tue, 28 Nov 2023 14:07:55 +0100
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  • Cc: javi.merino@xxxxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
  • Delivery-date: Tue, 28 Nov 2023 13:08:06 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 24.11.23 18:59, Alejandro Vallejo wrote:
Hi,

On 20/11/2023 11:38, Juergen Gross wrote:> With some small adjustments to the LOCK_PROFILE_* macros some #ifdefs
can be dropped from spinlock.c.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
V2:
- new patch
V3:
- add variable name to macros parameter (Jan Beulich)
---
  xen/common/spinlock.c | 49 +++++++++++++++++++------------------------
  1 file changed, 21 insertions(+), 28 deletions(-)

diff --git a/xen/common/spinlock.c b/xen/common/spinlock.c
index d7194e518c..ce18fbdd8a 100644
--- a/xen/common/spinlock.c
+++ b/xen/common/spinlock.c
@@ -267,25 +267,28 @@ void spin_debug_disable(void)
          lock->profile->time_hold += NOW() - lock->profile->time_locked;      \
          lock->profile->lock_cnt++;                                           \
      }
-#define LOCK_PROFILE_VAR    s_time_t block = 0
-#define LOCK_PROFILE_BLOCK  block = block ? : NOW();
-#define LOCK_PROFILE_GOT                                                     \
+#define LOCK_PROFILE_VAR(var, val)    s_time_t var = (val)
+#define LOCK_PROFILE_BLOCK(var     )  var = var ? : NOW()
nit: spaces before the closing parenthesis

Yeah, seen that later.


Juergen

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