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From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Xen-devel <xen-devel@lists.xenproject.org>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
	"Jan Beulich" <JBeulich@suse.com>,
	"Roger Pau Monné" <roger.pau@citrix.com>, "Wei Liu" <wl@xen.org>
Subject: [PATCH 1/5] x86/traps: Collect PERFC_exceptions stats for IST vectors too
Date: Fri, 19 Nov 2021 18:21:02 +0000	[thread overview]
Message-ID: <20211119182106.14868-2-andrew.cooper3@citrix.com> (raw)
In-Reply-To: <20211119182106.14868-1-andrew.cooper3@citrix.com>

This causes NMIs, #DB and #MC to be counted, rather than being reported as 0.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Wei Liu <wl@xen.org>
---
 xen/arch/x86/x86_64/entry.S | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/xen/arch/x86/x86_64/entry.S b/xen/arch/x86/x86_64/entry.S
index d5998acf8806..3caa5654768d 100644
--- a/xen/arch/x86/x86_64/entry.S
+++ b/xen/arch/x86/x86_64/entry.S
@@ -1005,6 +1005,13 @@ handle_ist_exception:
 #endif
         movq  %rsp,%rdi
         movzbl UREGS_entry_vector(%rsp),%eax
+
+#ifdef CONFIG_PERF_COUNTERS
+        lea   per_cpu__perfcounters(%rip), %rcx
+        add   STACK_CPUINFO_FIELD(per_cpu_offset)(%r14), %rcx
+        incl  ASM_PERFC_exceptions * 4(%rcx, %rax, 4)
+#endif
+
         leaq  exception_table(%rip),%rdx
         mov   (%rdx, %rax, 8), %rdx
         INDIRECT_CALL %rdx
-- 
2.11.0



  reply	other threads:[~2021-11-19 18:21 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-19 18:21 [PATCH 0/5] x86/traps: Drop exception_table[] Andrew Cooper
2021-11-19 18:21 ` Andrew Cooper [this message]
2021-11-22  8:50   ` [PATCH 1/5] x86/traps: Collect PERFC_exceptions stats for IST vectors too Jan Beulich
2021-11-19 18:21 ` [PATCH 2/5] x86/traps: Drop dummy_nmi_callback() Andrew Cooper
2021-11-22  8:51   ` Jan Beulich
2021-11-19 18:21 ` [PATCH 3/5] x86/crash: Drop manual hooking of exception_table[] Andrew Cooper
2021-11-22  8:57   ` Jan Beulich
2021-11-22 13:48     ` Andrew Cooper
2021-11-22 14:51       ` Jan Beulich
2021-11-19 18:21 ` [PATCH 4/5] x86/traps: Drop exception_table[] and use if/else dispatching Andrew Cooper
2021-11-22  9:04   ` Jan Beulich
2021-11-22 16:16     ` Andrew Cooper
2021-11-22 16:28       ` Jan Beulich
2021-11-23  9:05   ` Jan Beulich
2021-11-19 18:21 ` [PATCH 5/5] x86/traps: Clean up diagnostics Andrew Cooper
2021-11-22  9:08   ` Jan Beulich
2021-11-22 16:26     ` Andrew Cooper
2021-11-22 16:34       ` Jan Beulich

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