[PATCH 21/24] task diag: Add support for TGID attribute
flat view
STALE3975d
From: Andrey Vagin <hidden>
Date: 2015-07-06 08:51:35
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: David Ahern <redacted>
Add TGID attribute and put in every message. This is need for perf for
example when processing messages with maps.
Signed-off-by: David Ahern <redacted>
Signed-off-by: Andrey Vagin <redacted>
---
include/uapi/linux/task_diag.h | 1 +
kernel/taskdiag.c | 8 +++++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/task_diag.h b/include/uapi/linux/task_diag.h
index 19c9579..935502b 100644
--- a/include/uapi/linux/task_diag.h
+++ b/include/uapi/linux/task_diag.h@@ -15,6 +15,7 @@ enum { /* other attributes */ TASK_DIAG_PID = 64, /* u32 */ + TASK_DIAG_TGID, /* u32 */ __TASK_DIAG_ATTR_MAX #define TASK_DIAG_ATTR_MAX (__TASK_DIAG_ATTR_MAX - 1)
diff --git a/kernel/taskdiag.c b/kernel/taskdiag.c
index 6549df3..ccba538 100644
--- a/kernel/taskdiag.c
+++ b/kernel/taskdiag.c@@ -13,6 +13,7 @@ static size_t taskdiag_packet_size(u64 show_flags, int n_vma) size_t size; size = nla_total_size(sizeof(u32)); /* PID */ + + nla_total_size(sizeof(u32)); /* TGID */ if (show_flags & TASK_DIAG_SHOW_BASE) size += nla_total_size(sizeof(struct task_diag_base));
@@ -451,7 +452,7 @@ static int task_diag_fill(struct task_struct *tsk, struct sk_buff *skb, int err = 0, i = 0, n = 0; bool progress = false; int flags = 0; - u32 pid; + u32 pid, tgid; if (cb) { n = cb->args[2];
@@ -468,6 +469,11 @@ static int task_diag_fill(struct task_struct *tsk, struct sk_buff *skb, if (err) goto err; + tgid = task_tgid_vnr(tsk); + err = nla_put_u32(skb, TASK_DIAG_TGID, tgid); + if (err) + goto err; + if (show_flags & TASK_DIAG_SHOW_BASE) { if (i >= n) err = fill_task_base(tsk, skb);
--
2.1.0