Eric Lee / smarc-ti-linux-kernel

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Commit b10d22d6e8f76b9e94871aebe0fc62aab2748200

Authored by Anton Vorontsov
Committed by Jason Wessel
1 parent 07cd27bbd4
Exists in master and in 20 other branches dlt-processor-sdk-linux-03.00.00.04, newt-ti-linux-3.12.y, processor-sdk-linux-01.00.00, processor-sdk-linux-02.00.01, smarc-ti-linux-3.12.10, smarc-ti-linux-3.12.y, smarc-ti-linux-3.14.y, smarc-ti-linux-3.15.y, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04, ti-linux-3.12.y, ti-linux-3.14.y, ti-linux-3.15.y, ti-lsk-linux-4.1.y

kernel/debug: Make use of KGDB_REASON_NMI 

Currently kernel never set KGDB_REASON_NMI. We do now, when we enter
KGDB/KDB from an NMI.

This is not to be confused with kgdb_nmicallback(), NMI callback is
an entry for the slave CPUs during CPUs roundup, but REASON_NMI is the
entry for the master CPU.

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

Showing 1 changed file with 4 additions and 0 deletions Side-by-side Diff

kernel/debug/kdb/kdb_debugger.c
Diff comments   View file @ b10d22d
... ... @@ -12,6 +12,7 @@
12 12 #include <linux/kdb.h>
13 13 #include <linux/kdebug.h>
14 14 #include <linux/export.h>
  15 +#include <linux/hardirq.h>
15 16 #include "kdb_private.h"
16 17 #include "../debug_core.h"
17 18  
... ... @@ -51,6 +52,9 @@
51 52 ks->pass_exception = 0;
52 53 if (atomic_read(&kgdb_setting_breakpoint))
53 54 reason = KDB_REASON_KEYBOARD;
  55 +
  56 + if (in_nmi())
  57 + reason = KDB_REASON_NMI;
54 58  
55 59 for (i = 0, bp = kdb_breakpoints; i < KDB_MAXBPT; i++, bp++) {
56 60 if ((bp->bp_enabled) && (bp->bp_addr == addr)) {