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kgdb patches for 7.1 

Only a very small update for kgdb this cycle: a single patch from Kexin Sun
 that fixes some outdated comments.
 
 Signed-off-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
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Merge tag 'kgdb-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux

Pull kgdb update from Daniel Thompson:
 "Only a very small update for kgdb this cycle: a single patch from
  Kexin Sun that fixes some outdated comments"

* tag 'kgdb-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
  kgdb: update outdated references to kgdb_wait()
master
Linus Torvalds 2026-04-22 14:26:58 -07:00
parent 87d03777eb 256e5254ef
commit 38ee6e1fb6
4 changed files with 11 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/x86/kernel/kgdb.c
View File

@ -407,10 +407,11 @@ static void kgdb_disable_hw_debug(struct pt_regs *regs)
* kgdb_roundup_cpus - Get other CPUs into a holding pattern
*
* On SMP systems, we need to get the attention of the other CPUs
* and get them be in a known state. This should do what is needed
* to get the other CPUs to call kgdb_wait(). Note that on some arches,
* the NMI approach is not used for rounding up all the CPUs. For example,
* in case of MIPS, smp_call_function() is used to roundup CPUs.
* and get them into a known state. This should do what is needed
* to get the other CPUs to call kgdb_handle_exception(). Note that
* on some arches, the NMI approach is not used for rounding up all
* the CPUs. For example, in case of MIPS, smp_call_function() is
* used to roundup CPUs.
*
* On non-SMP systems, this is not called.
*/

7
include/linux/kgdb.h
View File

@ -202,9 +202,10 @@ extern void kgdb_call_nmi_hook(void *ignored);
*
* On SMP systems, we need to get the attention of the other CPUs
* and get them into a known state. This should do what is needed
* to get the other CPUs to call kgdb_wait(). Note that on some arches,
* the NMI approach is not used for rounding up all the CPUs. Normally
* those architectures can just not implement this and get the default.
* to get the other CPUs to call kgdb_handle_exception(). Note that
* on some arches, the NMI approach is not used for rounding up all
* the CPUs. Normally those architectures can just not implement
* this and get the default.
*
* On non-SMP systems, this is not called.
*/

2
kernel/debug/debug_core.c
View File

@ -704,7 +704,7 @@ return_normal:
if (ks->send_ready)
atomic_set(ks->send_ready, 1);
/* Signal the other CPUs to enter kgdb_wait() */
/* Signal the other CPUs to enter the debug trap handler */
else if ((!kgdb_single_step) && kgdb_do_roundup)
kgdb_roundup_cpus();
#endif

2
kernel/debug/gdbstub.c
View File

@ -517,7 +517,7 @@ static void gdb_get_regs_helper(struct kgdb_state *ks)
/*
* All threads that don't have debuggerinfo should be
* in schedule() sleeping, since all other CPUs
* are in kgdb_wait, and thus have debuggerinfo.
* are in kgdb_cpu_enter(), and thus have debuggerinfo.
*/
if (local_debuggerinfo) {
pt_regs_to_gdb_regs(gdb_regs, local_debuggerinfo);